10-K

Use these links to rapidly review the document
Table of Contents

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

FORM 10-K

ý	ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the fiscal year ended December 31, 2013
OR
o	TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the transition period from            to

Commission File No. 0-14719

SKYWEST, INC.

Incorporated under the Laws of Utah 87-0292166
(IRS Employer ID No.)

444 South River Road
St. George, Utah 84790
(435) 634-3000

Securities Registered Pursuant to Section 12(b) of the Act: None

Securities Registered Pursuant to Section 12(g) of the Act:
Common Stock, No Par Value

         Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes o    No ý

         Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act. Yes o    No ý

         Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ý    No o

         Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). Yes ý    No o

         Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained, to the best of registrant's knowledge, in the definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K. ý

         Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of "large accelerated filer," "accelerated filer" and "smaller reporting company" in Rule 12b-2 of the Exchange Act.

Large accelerated filer o Accelerated filer ý Non-accelerated filer o
(Do not check if a
smaller reporting company) Smaller reporting company o

         Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act). Yes o    No ý

         The aggregate market value of the registrant's common stock held by non-affiliates (based upon the closing sale price of the registrant's common stock on The Nasdaq National Market) on June 28, 2013 was approximately $682,092,110.

         As of February 3, 2014, there were 51,375,679 shares of the registrant's common stock outstanding.

Documents Incorporated by Reference

         Portions of the registrant's proxy statement to be used in connection with the Registrant's 2013 Annual Meeting of Shareholders are incorporated by reference into Part III of this Report as specified.

SKYWEST, INC.
ANNUAL REPORT ON FORM 10-K
TABLE OF CONTENTS

		Page No.
PART I
Cautionary Statement Concerning Forward Looking Statements			3
Item 1.	Business		3
Item 1A.	Risk Factors		18
Item 1B.	Unresolved Staff Comments		32
Item 2.	Properties		32
Item 3.	Legal Proceedings		35
Item 4.	Mine Safety Disclosures		36
PART II
Item 5.	Market for Registrant's Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities		37
Item 6.	Selected Financial Data		39
Item 7.	Management's Discussion and Analysis of Financial Condition and Results of Operations		40
Item 7A.	Quantitative and Qualitative Disclosures About Market Risk		60
Item 8.	Financial Statements and Supplementary Data		61
Item 9.	Changes in and Disagreements with Accountants on Accounting and Financial Disclosure		96
Item 9A.	Controls and Procedures		96
Item 9B.	Other Information		98
PART III
Item 10.	Directors, Executive Officers and Corporate Governance		98
Item 11.	Executive Compensation		98
Item 12.	Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters		98
Item 13.	Certain Relationships and Related Transactions		98
Item 14.	Principal Accountant Fees and Services		98
PART IV
Item 15.	Exhibits and Financial Statement Schedules		98
Signatures			104

2

PART I

Unless otherwise indicated in this Report, "SkyWest," "we," "us," "our" and similar terms refer to SkyWest, Inc. and "SkyWest Airlines" refers to our wholly-owned subsidiary, SkyWest Airlines, Inc.

Effective December 31, 2011, our subsidiary, ExpressJet Airlines, Inc. was merged into our subsidiary, Atlantic Southeast Airlines, Inc., with the surviving corporation named ExpressJet Airlines, Inc. (the "ExpressJet Combination"). In this Report, "Atlantic Southeast" refers to Atlantic Southeast Airlines, Inc. for periods prior to the ExpressJet Combination, "ExpressJet Delaware" refers to ExpressJet Airlines, Inc., a Delaware corporation, for periods prior to the ExpressJet Combination, and "ExpressJet" refers to ExpressJet Airlines, Inc., the Utah corporation resulting from the ExpressJet Combination, for periods subsequent to the ExpressJet Combination.

Cautionary Statement Concerning Forward-Looking Statements

        Certain of the statements contained in this Report should be considered "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995. These forward-looking statements may be identified by words such as "may," "will," "expect," "intend," "anticipate," "believe," "estimate," "plan," "project," "could," "should," "hope," "likely," and "continue" and similar terms used in connection with statements regarding our outlook, anticipated operations, the revenue environment, our contractual relationships, and our anticipated financial performance. These statements include, but are not limited to, statements about our future growth and development plans, including our future financial and operating results, our plans for SkyWest Airlines and ExpressJet, our objectives, expectations and intentions and other statements that are not historical facts. Readers should keep in mind that all forward-looking statements are based on our existing beliefs about present and future events outside of our control and on assumptions that may prove to be incorrect. If one or more risks identified in this Report materializes, or any other underlying assumption proves incorrect, our actual results will vary, and may vary materially, from those anticipated, estimated, projected, or intended. These risks and uncertainties include, but are not limited to, those described below in Item 1A. Risk Factors.

        There may be other factors that may affect matters discussed in forward-looking statements set forth in this Report, which factors may also cause actual results to differ materially from those discussed. We assume no obligation to publicly update any forward-looking statement to reflect actual results, changes in assumptions or changes in other factors affecting these statements other than as required by applicable law.

ITEM 1.    BUSINESS

General

        Through SkyWest Airlines and ExpressJet, we offer scheduled passenger service with approximately 4,000 daily departures to destinations in the United States, Canada, Mexico and the Caribbean. Substantially all of our flights are operated as Delta Connection, United Express, US Airways Express, American Eagle or Alaska under code-share arrangements with Delta Air Lines, Inc. ("Delta"), United Air Lines, Inc. ("United"), US Airways Group, Inc. ("US Airways"), American Airlines, Inc. ("American") or Alaska Airlines ("Alaska"), respectively. SkyWest Airlines and ExpressJet generally provide regional flying to our partners under long-term, fixed-fee code-share agreements. Among other features of our fixed-fee agreements, our partners generally reimburse us for specified direct operating expenses (including fuel expense, which is passed through to our partners), and pay us a fee for operating the aircraft.

        On December 31, 2011, Atlantic Southeast and ExpressJet Delaware completed the ExpressJet Combination. Since November 17, 2011, the operations formerly conducted by Atlantic Southeast and

3

ExpressJet Delaware have been conducted under a single operating certificate issued by the U.S. Federal Aviation Administration (the "FAA"). We currently anticipate that we will complete the integration of the labor groups of Atlantic Southeast and ExpressJet Delaware into ExpressJet during 2014 and 2015.

        SkyWest Airlines and ExpressJet have developed industry-leading reputations for providing quality regional airline service during their long operating histories. SkyWest Airlines has been flying since 1972 and ExpressJet (and its predecessors) since 1979. As of December 31, 2013, our consolidated fleet consisted of a total of 757 aircraft, of which 449 were assigned to United, 254 were assigned to Delta, 23 were assigned to American, 15 were assigned to US Airways, seven were assigned to Alaska, two were subleased to unaffiliated entities and seven were unassigned. We currently operate two types of regional jet aircraft: the Bombardier Aerospace ("Bombardier") regional jet, which comes in three different configurations: (the 50-seat Bombardier CRJ200 Regional Jet (the "CRJ200"), the 70-seat Bombardier CRJ700 Regional Jet (the "CRJ700") and the 70-90-seat Bombardier CRJ900 Regional Jet (the "CRJ900")), and the Embraer S.A. ("Embraer") regional jet, which we operate in two different configurations the 50-seat Embraer ERJ-145 regional jet (the "ERJ145") and the 37-seat Embraer ERJ-135 regional jet (the "ERJ135"). We also operate the 30-seat Embraer Brasilia EMB-120 turboprop (the "Brasilia turboprop").

        We were incorporated in Utah in 1972. Our principal executive offices are located at 444 South River Road, St. George, Utah 84790, and our primary telephone number is (435) 634-3000. We maintain an Internet web site at www.skywest.com. Our website provides a link to the web site of the SEC, through which our annual, quarterly and current reports, as well as amendments to those reports, are available. In addition, we provide electronic or paper copies of our SEC filings free of charge upon request.

Our Operating Platforms

SkyWest Airlines

        SkyWest Airlines provides regional jet and turboprop service to airports primarily located in the midwestern and western United States. SkyWest Airlines offered approximately 1,700 daily scheduled departures as of December 31, 2013, of which approximately 1,000 were United Express flights, 500 were Delta Connection flights, 90 were US Airways Express flights, 80 were American Eagle flights and 30 were Alaska-coded flights. SkyWest Airlines' operations are conducted principally from airports located in Chicago (O'Hare), Denver, Los Angeles, Houston, Minneapolis, Portland, Seattle, Phoenix, San Francisco and Salt Lake City. As of December 31, 2013, SkyWest Airlines operated a fleet of 334 aircraft consisting of the following:

	CRJ200		CRJ700		CRJ900		EMB120		Total
United		78		70		—		36		184
Delta		49		19		32		9		109
American		12		—		—		—		12
US Airways		11		—		4		—		15
Alaska		—		7		—		—		7
Unassigned		7		—		—		—		7
Total		157		96		36		45		334

        SkyWest Airlines conducts its United code-share operations under a United Express Agreement, pursuant to which SkyWest Airlines is paid primarily on a fee-per-completed block hour and departure basis, plus a margin based on performance incentives (the "SkyWest Airlines United Express Agreement"). SkyWest conducts its Delta Connection operations pursuant to the terms of an Amended and Restated Delta Connection Agreement, pursuant to which SkyWest Airlines is paid primarily on a

4

fee-per-completed block hour and departure basis, plus a payment based on block hours flown (the "SkyWest Airlines Delta Connection Agreement"). SkyWest Airlines conducts its US Airways and Alaska operations pursuant to the terms of code-share agreements with Alaska and US Airways, respectively, pursuant to which SkyWest Airlines is paid primarily on a fee-per-completed block hour and departure basis, plus a fixed margin per aircraft each month, and an incentive or penalty based on performance incentives. SkyWest Airlines is also a party to a code-share agreement with American (the "SkyWest Airlines American Agreement"), pursuant to which SkyWest Airlines operates as American Eagle on designated routes, and is paid primarily on a fee-per-completed block hour and departure basis, plus a fixed margin per aircraft each month and an incentive or penalty based on performance incentives.

ExpressJet

        ExpressJet provides regional jet service principally in the United States, primarily from airports located in Atlanta, Cleveland, Chicago (O'Hare), Denver, Houston, Detroit, Memphis, Newark, Minneapolis and Washington Dulles. ExpressJet offered more than 2,200 daily scheduled departures as of December 31, 2013, of which approximately 700 were Delta Connection flights, 1,400 were United Express flights and 100 were American Eagle flights. As of December 31, 2013, ExpressJet operated a fleet of 421 aircraft consisting of the following:

	CRJ200		ERJ145		ERJ135		CRJ700		CRJ900		Total
United		14		242		9		—		—		265
Delta		76		—		—		41		28		145
American		11		—		—		—		—		11
Total		101		242		9		41		28		421

        ExpressJet conducts Delta Connection operations pursuant to the terms of a Second Amended and Restated Delta Connection Agreement initially executed between Delta and Atlantic Southeast and to which ExpressJet is now a party (the "ExpressJet Delta Connection Agreement"). Under the ExpressJet Delta Connection Agreement, ExpressJet is paid primarily on a fee-per-completed block hour and departure basis, plus, if ExpressJet completes a certain minimum percentage of its Delta Connection flights, a specified margin on such costs. Additionally, the ExpressJet Delta Connection Agreement provides for incentive compensation upon satisfaction of certain performance goals. ExpressJet's United code-share operations are conducted under a Capacity Purchase Agreement initially executed by ExpressJet and Continental Airlines, Inc. ("Continental") and to which United became a party through its merger with Continental (the "United CPA") and two United Express Agreements between ExpressJet and United (collectively, the "ExpressJet United Express Agreements"). Under the ExpressJet United Express Agreements and the United CPA ExpressJet is paid by United, primarily on a fee-per-completed block hour and departure basis, plus a margin based on performance incentives. ExpressJet is also a party to a code-share agreement with American (the "ExpressJet American Agreement"), pursuant to which ExpressJet currently operates as American Eagle on designated routes, and is paid primarily on a fee-per-completed block hour and departure basis, plus a fixed margin per aircraft each month and an incentive or penalty based on performance incentives.

Competition and Economic Conditions

        The airline industry is highly competitive. SkyWest Airlines and ExpressJet compete principally with other code-sharing regional airlines, but also compete with regional airlines operating without code-share agreements, as well as low-cost carriers and major airlines. The combined operations of SkyWest Airlines and ExpressJet extend throughout most major geographic markets in the United States. Our competition includes, therefore, nearly every other domestic regional airline, and to a

5

certain extent, most major and low-cost domestic carriers. The primary competitors of SkyWest Airlines and ExpressJet among regional airlines with code-share arrangements include Air Wisconsin Airlines Corporation ("Air Wisconsin"), American Eagle Airlines, Inc. ("American Eagle") (owned by American), Compass Airlines ("Compass"), Horizon Air Industries, Inc. ("Horizon") (owned by Alaska Air Group, Inc.) , Mesa Air Group, Inc. ("Mesa"), Endevor, Inc. ("Endevor") (owned by Delta), Republic Airways Holdings Inc. ("Republic"), Trans State Airlines, Inc. ("Trans State") and PSA Airlines, Inc. ("PSA") (owned by US Airways). Major airlines award contract flying to these regional airlines based primarily upon the following criteria: low cost, financial resources, overall customer service levels relating to on-time arrival and departure statistics, low rates of flight cancellation, baggage handling performance and the overall image of the regional airline.

        The principal competitive factors for code-share partner regional airlines are code-share agreement terms, customer service, aircraft types, fare pricing, flight schedules and markets and routes served. The principal competitive factors we experience with respect to our pro-rate flying include fare pricing, customer service, routes served, flight schedules, aircraft types and relationships with major partners.

        The combined operations of SkyWest Airlines and ExpressJet represent the largest regional airline operation in the United States. However, many of the major and low-cost carriers are larger, and have greater financial and other resources than SkyWest Airlines and ExpressJet, individually or collectively. Additionally, regional carriers owned by major airlines, such as American Eagle, PSA and Endevor, may have access to greater resources, through their parent companies, than SkyWest Airlines and ExpressJet, and may have enhanced competitive advantages since they are subsidiaries of major airlines. Moreover, federal deregulation of the industry allows competitors to rapidly enter our markets and to quickly discount and restructure fares. The airline industry is particularly susceptible to price discounting because airlines incur only nominal costs to provide service to passengers occupying otherwise unsold seats.

        Generally, the airline industry is highly sensitive to changes in general economic conditions, in large part due to the discretionary nature of a substantial percentage of both business and leisure travel. Many airlines have historically reported lower earnings or substantial losses during periods of economic recession, heavy fare discounting, high fuel costs and other disadvantageous environments. Economic downturns, combined with competitive pressures, have contributed to a number of reorganizations, bankruptcies, liquidations and business combinations among major and regional carriers. The effect of economic downturns may be somewhat mitigated by the predominantly contract-based flying arrangements of SkyWest Airlines and ExpressJet. In addition, if Delta or United, or any of our other code-share partners, experience a prolonged decline in passenger load or are negatively affected by low ticket prices or high fuel prices, they will likely seek to renegotiate their code-share agreements with SkyWest Airlines and ExpressJet, as applicable, or cancel flights in order to reduce their costs. In addition, adverse weather conditions can negatively impact our operations and financial condition

Industry Overview

Majors, Low-Cost Carriers and Regional Airlines

        The airline industry in the United States has traditionally been dominated by several major airlines, including American, Delta, US Airways and United. The major airlines offer scheduled flights to most major U.S. cities, numerous smaller U.S. cities, and cities throughout the world through a hub and spoke network.

        Low-cost carriers, such as Southwest Airlines Co. ("Southwest") and JetBlue Airways Corporation ("JetBlue"), generally offer fewer conveniences to travelers and have lower cost structures than major airlines, which permits them to offer flights to and from many of the same markets as the major

6

airlines, but at lower prices. Low-cost carriers typically fly direct flights with limited service to smaller cities, concentrating on higher demand flights to and from major population bases.

        Regional airlines, such as SkyWest Airlines, ExpressJet, Mesa, Air Wisconsin, Endevor, Compass, Trans State and Republic, typically operate smaller aircraft on lower-volume routes than major and low-cost carriers. Several regional airlines, including American Eagle, PSA, and Horizon, are wholly-owned subsidiaries of major airlines.

        In contrast to low-cost carriers, regional airlines generally do not try to establish an independent route system to compete with the major airlines. Rather, regional airlines typically enter into relationships with one or more major airlines, pursuant to which the regional airline agrees to use its smaller, lower-cost aircraft to carry passengers booked and ticketed by the major airline between a hub of the major airline and a smaller outlying city. In exchange for such services, the major airline pays the regional airline either a fixed flight fee, termed "contract" or "fixed-fee" flights, or receives a percentage of applicable ticket revenues, termed "pro-rate" or "revenue-sharing" flights.

Relationship of Regional and Major Airlines

        Regional airlines generally enter into code-share agreements with major airlines, pursuant to which the regional airline is authorized to use the major airline's two-letter flight designator codes to identify the regional airline's flights and fares in the central reservation systems, to paint its aircraft with the colors and/or logos of its code-share partner and to market and advertise its status as a carrier for the code-share partner. For example, SkyWest Airlines flies out of Chicago (O'Hare), Washington Dulles, Denver, Houston, Los Angeles and San Francisco as United Express, out of Salt Lake City, Detroit and Minneapolis as Delta Connection, out of Seattle and Portland as an Alaska carrier, out of Phoenix as a US Airways carrier and out of Los Angeles as American Eagle. ExpressJet operates primarily as Delta Connection out of Atlanta and Detroit; and as United Express out of Chicago (O'Hare), Houston, Cleveland, Newark, Denver and Washington Dulles. Code-share agreements also generally obligate the major airline to provide services such as reservations, ticketing, ground support and gate access to the regional airline, and both partners often coordinate marketing, advertising and other promotional efforts. In exchange, the regional airline provides a designated number of low-capacity (usually between 30 and 70 seats) flights between larger airports served by the major airline and surrounding cities, usually in lower-volume markets. The financial arrangements between the regional airlines and their code-share partners usually involve contractual or fixed-fee payments based on the flights or a revenue-sharing arrangement based on the flight ticket revenues, as explained below:

•

Fixed-Fee Arrangements.  Under a fixed-fee arrangement (commonly referred to as capacity purchase agreements, or contract flying), the major airline generally pays the regional airline a fixed-fee for each departure, with additional incentives based on completion of flights, on-time performance and baggage handling performance. In addition, the major and regional airline often enter into an arrangement pursuant to which the major airline bears the risk of changes in the price of fuel and other such costs that are passed through to the major airline partner. Regional airlines benefit from a fixed-fee arrangement because they are sheltered from most of the elements that cause volatility in airline financial performance, including variations in ticket prices, passenger loads and fuel prices. However, regional airlines in fixed-fee arrangements do not benefit from positive trends in ticket prices, passenger loads or fuel prices and, because the major airlines absorb most of the costs associated with the regional airline flight, the margin between the fixed-fees for a flight and the expected per-flight costs tends to be smaller than the margins associated with revenue-sharing arrangements.

•

Revenue-Sharing Arrangements.  Under a revenue-sharing arrangement (commonly referred to as pro-rate arrangements), the major airline and regional airline negotiate a proration formula, pursuant to which the regional airline receives a percentage of the ticket revenues for those

7

passengers traveling for one portion of their trip on the regional airline and the other portion of their trip on the major airline. Substantially all costs associated with the regional airline flight are borne by the regional airline. In such a revenue-sharing arrangement, the regional airline realizes increased profits as ticket prices and passenger loads increase or fuel prices decrease and, correspondingly, realizes decreased profits as ticket prices and passenger loads decrease or fuel prices increase.

Code-Share Agreements

        SkyWest Airlines has code-share agreements with United, Delta, American, US Airways and Alaska. ExpressJet has code-share agreements with United, Delta and American.

        These code-share agreements authorize Delta, United, American, Alaska and US Airways to identify our flights and fares under their two-letter flight designator codes ("DL," "UA" "AA", "AS" or "US," respectively) in the central reservation systems, and generally require us to paint our aircraft with their colors and logos and to market our status as Delta Connection, United Express, American Eagle, US Airways Express or Alaska, as applicable. Under each of our code-share agreements, our passengers participate in the major partner's frequent flyer program, and the major partner provides additional services such as reservations, ticket issuance, ground support services and gate access. We also coordinate our marketing, advertising and other promotional efforts with our major partners. During the year ended December 31, 2013, approximately 90% of our passenger revenues related to contract flights, where Delta, United, Alaska, American and US Airways controlled scheduling, ticketing, pricing and seat inventories. The remainder of our passenger revenues during the year ended December 31, 2013 related to pro-rate flights for Delta or United, where we controlled scheduling, ticketing, pricing and seat inventories, and shared revenues with Delta or United according to pro-rate formulas. The following summaries of our code-share agreements do not purport to be complete and are qualified in their entirety by reference to the applicable agreement.

SkyWest Airlines Delta Connection Agreement

        SkyWest Airlines and Delta are parties to the SkyWest Airlines Delta Connection Agreement, dated as of September 8, 2005. As of December 31, 2013, SkyWest Airlines operated 32 CRJ900s, 19 CRJ700s and 41 CRJ200s under the SkyWest Airlines Delta Connection Agreement. As of December 31, 2013, SkyWest Airlines was operating more than 500 Delta Connection flights per day between Salt Lake City, Detroit or Minneapolis and outlying destinations. Additionally, as of December 31, 2013, SkyWest Airlines operated nine Brasilia turboprops and eight CRJ200s under the Delta code under a revenue-sharing arrangement. Generally, under the SkyWest Airlines Delta Connection Agreement, Delta retains all air fares, cargo rates, mail charges and other revenues associated with each flight.

        In exchange for providing the designated number of flights and performing SkyWest Airlines' other obligations under the SkyWest Airlines Delta Connection Agreement, SkyWest Airlines is scheduled to receive from Delta on a weekly basis (i) specified fixed rate payments for each completed flight, which are intended to pay for certain costs related to the Delta Connection flights, plus (ii) a fixed dollar payment per completed flight block hour, subject to annual escalation at an agreed rate. Costs directly reimbursed by Delta under the SkyWest Airlines Delta Connection Agreement include costs primarily related to fuel, aircraft engine maintenance and aircraft ownership.

        The SkyWest Airlines Delta Connection Agreement provides that, beginning with the fifth anniversary of the execution of the agreement (September 8, 2010), Delta has the right to require that certain contractual rates under that agreement shall not exceed the second lowest rates of all carriers within the Delta Connection Program. On November 19, 2010, SkyWest Airlines reached an agreement with Delta related to the second lowest rate provisions to be applied under the SkyWest Airlines Delta

8

Connection Agreement. As a result of that agreement, SkyWest Airlines and Delta have established the contractual rates which will apply under the SkyWest Airlines Delta Connection Agreement through December 31, 2015.

        The SkyWest Airlines Delta Connection Agreement is scheduled to terminate on December 31, 2022, unless Delta elects to exercise its option to extend the term for up to four additional five-year terms. The SkyWest Airlines Delta Connection Agreement is subject to early termination in various circumstances, including:

•

if SkyWest Airlines or Delta commits a material breach of the SkyWest Airlines Delta Connection Agreement, subject to 30-day notice and cure rights;

•

if SkyWest Airlines fails to conduct all flight operations and maintain all aircraft under the SkyWest Airlines Delta Connection Agreement in compliance in all material respects with applicable government regulations;

•

if SkyWest Airlines fails to satisfy certain performance and safety requirements;

•

if, under certain circumstances, Delta has a right to terminate the ExpressJet Delta Connection Agreement;

•

if the other party files for bankruptcy, reorganization or similar action (subject to limitations imposed by the U.S. Bankruptcy Code) or if either party makes an assignment for the benefit of creditors; or

•

if SkyWest Airlines fails to maintain competitive base rate costs (provided, however, that SkyWest Airlines has the right to adjust its rates prior to any such termination).

ExpressJet Delta Connection Agreement

        ExpressJet and Delta are parties to the ExpressJet Delta Connection Agreement, originally dated as of September 8, 2005. As of December 31, 2013, ExpressJet operated 28 CRJ900s, 41 CRJ700s and 76 CRJ200s for Delta under the ExpressJet Delta Connection Agreement. As of December 31, 2013, ExpressJet was operating approximately 700 Delta Connection flights per day between Atlanta or Detroit and outlying destinations. Under the ExpressJet Delta Connection Agreement, Delta is entitled to all passenger, cargo and other revenues associated with each flight. Commencing in 2008, ExpressJet obtained the right to maintain its percentage of total Delta Connection flights that it had in 2007, so long as its bid for additional regional flying is competitive with bids submitted by other regional carriers.

        In exchange for providing the designated number of flights and performing ExpressJet's other obligations under the ExpressJet Delta Connection Agreement, ExpressJet is scheduled to receive from Delta on a weekly basis (i) specified fixed rate payments for each completed flight, which are intended to pay for certain direct costs related to Delta Connection flights plus (ii) if ExpressJet completes a certain minimum percentage of its Delta Connection flights, an amount equal to a certain percentage of the direct costs (not including fuel costs) related to the Delta Connection flights. Costs directly reimbursed by Delta under the ExpressJet Delta Connection Agreement include costs related to fuel, ground handling, and aircraft engine maintenance and aircraft ownership. The ExpressJet Delta Connection Agreement also provides for incentive compensation based upon ExpressJet's performance, including on-time arrival performance and completion percentage rates.

9

        The ExpressJet Delta Connection Agreement provides that, upon the fifth anniversary of the execution of the agreement (September 8, 2010), Delta obtained the right to require that certain contractual rates under that agreement shall not exceed the second lowest rates of all carriers within the Delta Connection Program. On November 19, 2010, ExpressJet (formerly Atlantic Southeast) reached an agreement with Delta related to the second lowest rate provisions to be applied under the ExpressJet Delta Connection Agreement. As a result of that agreement, ExpressJet and Delta have established the contractual rates which will apply under the ExpressJet Delta Connection Agreement through December 31, 2015.

        The ExpressJet Delta Connection Agreement is scheduled to terminate on September 8, 2020, unless Delta elects to exercise its option to extend the term for up to four additional five-year terms. The ExpressJet Delta Connection Agreement is subject to early termination in various circumstances including:

•

if ExpressJet or Delta commits a material breach of the ExpressJet Delta Connection Agreement, subject to 30-day notice and cure rights;

•

if ExpressJet fails to conduct all flight operations and maintain all aircraft under the ExpressJet Delta Connection Agreement in compliance in all material respects with applicable government regulations;

•

if ExpressJet fails to satisfy certain performance and safety requirements;

•

if, under certain circumstances, Delta has a right to terminate the SkyWest Airlines Delta Connection Agreement;

•

if the other party files for bankruptcy, reorganization or similar action (subject to limitations imposed by the U.S. Bankruptcy Code) or if either party makes an assignment for the benefit of creditors; or

•

if ExpressJet fails to maintain competitive base rate costs (provided, however, that ExpressJet has the right to adjust its rates prior to any such termination).

        During 2012, we reached an agreement with Delta to add 34 additional used dual-class Bombardier regional jet aircraft in exchange for the early termination of 66 CRJ200 aircraft under our Delta Connection Agreements. All 34 dual-class aircraft operate under the terms and conditions of the SkyWest Airlines Delta Connection Agreement regardless of whether SkyWest Airlines or ExpressJet operate the aircraft. The 34 additional aircraft consist of five CRJ700s and 29 CRJ900s. As of December 31, 2013, we had taken delivery of all 34 of the additional aircraft. The remaining lease terms of the 34 additional aircraft currently run through December 31, 2022. We anticipate that all 66 CRJ200 aircraft will be removed from the Delta Connection Agreements by December 31, 2015. Of the 66 CRJ200s scheduled to be removed from Delta operations, 41 CRJ200s are subleased from Delta for a nominal amount, which are scheduled to be returned to Delta without obligation to us.

SkyWest Airlines United Express Agreement

        SkyWest Airlines and United are parties to the SkyWest Airlines United Express Agreement entered into on July 31, 2003. As of December 31, 2013, SkyWest Airlines operated 70 CRJ700s, 78 CRJ200s and 36 Brasilia turboprops under the SkyWest Airlines United Express Agreement, flying a total of approximately 1,050 United Express flights per day between Chicago (O'Hare), Denver, Houston, Los Angeles, San Francisco or Washington Dulles and designated outlying destinations. Generally, under the SkyWest Airlines United Express Agreement, United retains all air fares, cargo rates, mail charges and other revenues associated with each flight.

        In exchange for providing the designated number of flights and performing SkyWest Airlines' obligations under the SkyWest Airlines United Express Agreement, SkyWest Airlines receives from

10

United compensation (subject to an annual adjustment) of a fixed fee per completed block hour, a fixed fee per completed departure, a fixed fee per passenger, and a fixed fee for overhead and aircraft costs. The SkyWest Airlines United Express Agreement provides for incentives based upon SkyWest Airlines' performance, including on-time arrival performance and completion percentage rates. Additionally, certain of SkyWest Airlines' operating costs are reimbursed by United, including costs related to fuel and aircraft ownership. As of December 31, 2013, 27 of the 36 Brasilia turboprops and 17 of the 78 CRJ200s SkyWest Airlines operated under the SkyWest Airlines United Express Agreement were operated under a revenue-sharing arrangement. On October 16, 2009, SkyWest Airlines and United agreed to extend the right of SkyWest Airlines to operate 40 regional jet aircraft under the SkyWest Airlines United Express Agreement until the end of their respective lease terms.

        United has the option, upon twelve months prior notice, to extend the SkyWest Airlines United Express Agreement for five years. The SkyWest Airlines United Express Agreement is scheduled to terminate in 2024. The SkyWest Airlines United Express Agreement is subject to early termination in various circumstances including:

•

if SkyWest Airlines or United fails to fulfill an obligation under the SkyWest Airlines United Express Agreement for a period of 60 days after written notice to cure;

•

if SkyWest Airlines' operations fall below certain performance levels for a period of three consecutive months;

•

subject to limitations imposed by the U.S. Bankruptcy Code, if the other party becomes insolvent, fails to pay its debts when due, takes action leading to its cessation as a going concern, makes an assignment of substantially all of its assets, or ceases or suspends operations;

•

if bankruptcy proceedings are commenced against the other party (subject to limitations imposed by the U.S. Bankruptcy Code) and certain specified conditions are not satisfied; or

•

if SkyWest Airlines operates, subject to certain exceptions, any additional regional jets or turboprop aircraft pursuant to a marketing or code-share relationship with any party other than United to provide hub service at United's hubs in Chicago (O'Hare), Denver, San Francisco, Seattle/Tacoma, or Washington, D.C. (Dulles International Airport).

        On May 16, 2013, SkyWest Airlines and United entered into a United Express Agreement to operate 40 new Embraer E175 dual-class regional jet aircraft. Under the agreement, we anticipate that the 40 aircraft will be introduced into service in the second quarter of 2014, with deliveries continuing to mid-2015. The United Express Agreement has a 12-year term for each of the aircraft subject to the agreement, and other terms which are generally consistent with the SkyWest Airlines United Express Agreement.

ExpressJet United CPA

        Effective November 12, 2010, ExpressJet Delaware and Continental entered into the United CPA, whereby ExpressJet Delaware agreed to provide regional airline service in the Continental flight system. The rights and obligations of ExpressJet Delaware under the United CPA became the rights and obligations of ExpressJet as a consequence of the ExpressJet Combination. The rights and obligations of Continental under the United CPA became the rights and obligations of United as a consequence of United's merger with Continental in 2010.

        The United CPA provides for a ten-year term, subject to early termination by United or ExpressJet upon the occurrence of certain events. United's termination rights include the right to terminate the United CPA if ExpressJet's performance falls below identified standards (and such failure is not cured within 60 days following receipt of notice), upon the occurrence of a labor strike lasting 15 days or longer and upon the occurrence of a material default under certain lease agreements relating to aircraft

11

operated by ExpressJet under the United CPA (provided that such material default is not cured within 60 days following receipt of notice). ExpressJet's termination rights include the right to terminate the United CPA if United fails to make payment of $500,000 or more due to ExpressJet under the United CPA and such failure is not cured within five business days following receipt of notice.

        Under the terms of the United CPA, ExpressJet operates 220 ERJ145s and nine ERJ135s in the United flight system. All of the ERJ145s and ERJ 135s are leased to ExpressJet by United pursuant to sublease or lease agreements. Upon the expiration of the United CPA, ExpressJet is obligated to return the subleased or leased aircraft to United.

        Under the terms of the United CPA, United has agreed to compensate ExpressJet on a monthly basis based on the block hours flown by ExpressJet and the weighted average number of aircraft operated by ExpressJet under the United CPA. Additionally, ExpressJet may earn incentive compensation for good operating performance, but is subject to financial penalties for poor operating performance. The parties to the United CPA have made customary representations, warranties and covenants, and the United CPA contains other provisions typical of agreements of this kind, including with respect to various operational, marketing and administrative matters.

ExpressJet United Express Agreements

        ExpressJet and United are parties to two ExpressJet United Express Agreements, consisting of a United Express Agreement initially executed between ExpressJet Delaware and United, dated December 1, 2009, and a United Express Agreement initially executed between Atlantic Southeast and United, dated February 10, 2010. As of December 31, 2013, ExpressJet operated 22 ERJ145s and 14 CRJ200s under the United Express Agreements. Generally, under the ExpressJet United Express Agreements, United retains all air fares, cargo rates, mail charges and other revenues associated with each flight.

        In exchange for providing the designated number of flights and performing ExpressJet's obligations under the ExpressJet United Express Agreements, ExpressJet receives from United compensation (subject to an annual adjustment) of a fixed fee per completed block hour, fixed fee per completed departure, fixed fee per passenger and a fixed fee for overhead and aircraft costs. The ExpressJet United Express Agreements provide for incentives based upon ExpressJet's performance, including on-time arrival performance and completion percentage rates. Additionally, certain of ExpressJet's operating costs are reimbursed by United, including fuel costs.

        ExpressJet's rights to fly aircraft under the ExpressJet United Express Agreements expire in two tranches: the agreements expire with respect to 22 ERJ145s on April 30, 2015, and 14 CRJ200s during 2015. Under the agreements, United must notify ExpressJet of its intention to renew each tranche of aircraft not less than six months prior to the end of the term for such aircraft.

SkyWest Airlines American Agreement

        On September 11, 2012, SkyWest Airlines and American entered into the SkyWest Airlines American Agreement. As of December 31, 2013, SkyWest Airlines operated 12 CRJ200s under the SkyWest Airlines American Agreement, flying approximately 80 American Eagle flights per day between Los Angeles and designated outlying destinations. Generally, under the SkyWest Airlines American Agreement, American retains all air fares, cargo rates, mail charges and other revenues associated with each flight.

        In exchange for providing the designated number of flights and performing SkyWest Airlines' obligations under the SkyWest Airlines American Agreement, SkyWest Airlines receives from American compensation (subject to an annual adjustment) of a fixed fee per completed block hour, a fixed fee per completed departure, a fixed fee per passenger, and a fixed fee for overhead and aircraft costs. The

12

SkyWest Airlines American Agreement provides for incentives and penalties based upon SkyWest Airlines' performance, including on-time arrival performance, completion percentage rates and customer complaints. Additionally, certain of SkyWest Airlines' operating costs are reimbursed or paid directly by American, including costs related to fuel.

        The SkyWest Airlines American Agreement is scheduled to terminate in 2016. The SkyWest Airlines American Agreement is subject to early termination in various circumstances including:

•

if SkyWest Airlines or American fails to fulfill an obligation under the SkyWest Airlines American Agreement for a period of 30 days after written notice to cure;

•

if SkyWest Airlines' operations fall below certain performance levels;

•

subject to limitations imposed by the U.S. Bankruptcy Code, if the other party makes a general assignment for the benefit of creditors or becomes insolvent; or

•

if bankruptcy proceedings are commenced against the other party (subject to limitations imposed by the U.S. Bankruptcy Code) and certain specified conditions are not satisfied.

ExpressJet American Agreement

        On September 11, 2012, ExpressJet and American entered into the SkyWest Airlines American Agreement. As of December 31, 2013, ExpressJet operated 11 CRJ200s under the ExpressJet American Agreement, flying approximately 100 American Eagle flights per day between Dallas and designated outlying destinations. Generally, under the ExpressJet American Agreement, American retains all air fares, cargo rates, mail charges and other revenues associated with each flight.

        In exchange for providing the designated number of flights and performing ExpressJet's obligations under the ExpressJet American Agreement, ExpressJet is entitled to receive from American compensation (subject to an annual adjustment) of a fixed fee per completed block hour, a fixed fee per completed departure, a fixed fee per passenger, and a fixed fee for overhead and aircraft costs. The ExpressJet American Agreement provides for incentives and penalties based upon ExpressJet's performance, including on-time arrival performance, completion percentage rates and customer complaints. Additionally, certain of ExpressJet's operating costs are reimbursed or paid directly by American, including costs related to fuel.

        The ExpressJet American Agreement is scheduled to terminate in 2017. The ExpressJet American Agreement is subject to early termination in various circumstances including:

•

if ExpressJet or American fails to fulfill an obligation under the ExpressJet American Agreement for a period of 30 days after written notice to cure;

•

if ExpressJet's operations fall below certain performance levels;

•

subject to limitations imposed by the U.S. Bankruptcy Code, if the other party makes a general assignment for the benefit of creditors or becomes insolvent; or

•

if bankruptcy proceedings are commenced against the other party (subject to limitations imposed by the U.S. Bankruptcy Code) and certain specified conditions are not satisfied.

SkyWest Airlines Alaska Capacity Purchase Agreement

        On April 13, 2011, SkyWest Airlines and Alaska entered into the SkyWest Airlines Alaska Capacity Purchase Agreement. As of December 31, 2013, SkyWest Airlines operated seven CRJ700s under the SkyWest Airlines Alaska Capacity Purchase Agreement, flying approximately 25 Alaska flights per day between Seattle or Portland and designated outlying destinations. Generally, under the SkyWest

13

Airlines Alaska Capacity Purchase Agreement, Alaska retains all air fares, cargo rates, mail charges and other revenues associated with each flight.

        In exchange for providing the designated number of flights and performing SkyWest Airlines' obligations under the SkyWest Airlines Alaska Capacity Purchase Agreement, SkyWest Airlines receives from Alaska compensation (subject to an annual adjustment) of a fixed fee per completed block hour, a fixed fee per completed departure, a fixed fee per passenger, and a fixed fee for overhead and aircraft costs. Additionally, certain of SkyWest Airlines' operating costs are reimbursed or paid directly by Alaska, including costs related to fuel and aircraft ownership.

        The SkyWest Airlines Alaska Capacity Purchase Agreement is scheduled to terminate in 2018. The SkyWest Airlines Alaska Capacity Purchase Agreement is subject to early termination in various circumstances including:

•

if SkyWest Airlines or Alaska fails to fulfill an obligation under the SkyWest Airlines Alaska Capacity Purchase Agreement for a period of 30 days after written notice to cure;

•

if SkyWest Airlines' operations fall below certain performance levels;

•

subject to limitations imposed by the U.S. Bankruptcy Code, if the other party makes a general assignment for the benefit of creditors or becomes insolvent; or

•

if bankruptcy proceedings are commenced against the other party (subject to limitations imposed by the U.S. Bankruptcy Code) and certain specified conditions are not satisfied.

SkyWest Airlines US Airways Express Agreement

        On November 17, 2011, SkyWest Airlines and US Airways entered into the SkyWest Airlines US Airways Express Agreement. As of December 31, 2013, SkyWest Airlines operated 10 CRJ200s and 4 CRJ900s under the SkyWest Airlines US Airways Express Agreement, flying a total of approximately 90 US Airways Express flights per day between Phoenix and designated outlying destinations. Additionally, as of December 31, 2013, SkyWest Airlines operated one CRJ200s under a revenue-sharing arrangement. Generally, under the SkyWest Airlines US Airways Express Agreement, US Airways retains all air fares, cargo rates, mail charges and other revenues associated with each flight.

        In exchange for providing the designated number of flights and performing SkyWest Airlines' obligations under the SkyWest Airlines US Airways Express Agreement, SkyWest Airlines receives from US Airways compensation (subject to an annual adjustment) of a fixed fee per completed block hour, a fixed fee per completed departure, a fixed fee per passenger, and a fixed fee for overhead and aircraft costs. The SkyWest Airlines US Airways Express Agreement provides for incentives and penalties based upon SkyWest Airlines' performance, including on-time arrival performance and completion percentage rates. Additionally, certain of SkyWest Airlines' operating costs are reimbursed by US Airways, including costs related to fuel and insurance.

        The SkyWest Airlines US Airways Agreement is scheduled to terminate in 2015. The SkyWest Airlines US Airways Express Agreement is subject to early termination in various circumstances including:

•

if SkyWest Airlines or US Airways fails to fulfill an obligation under the SkyWest Airlines US Airways Express Agreement for a period of 30 days after written notice to cure;

•

if SkyWest Airlines' operations fall below certain performance levels;

•

subject to limitations imposed by the U.S. Bankruptcy Code, if the other party becomes insolvent, fails to pay its debts when due, takes action leading to its cessation as a going concern, makes an assignment of substantially all of its assets, or ceases or suspends operations; or

14

•

if bankruptcy proceedings are commenced against the other party (subject to limitations imposed by the U.S. Bankruptcy Code) and certain specified conditions are not satisfied.

Training and Aircraft Maintenance

        SkyWest Airlines and ExpressJet employees perform substantially all routine airframe and engine maintenance and periodic inspection of equipment at their respective maintenance facilities, and provide substantially all training to SkyWest Airlines and ExpressJet crew members and maintenance personnel at their respective training facilities. SkyWest Airlines and ExpressJet also contract with third-party vendors for non-routine airframe and engine maintenance.

Fuel

        Historically, we have not experienced problems with the availability of fuel, and believe we will be able to obtain fuel in quantities sufficient to meet our existing and anticipated future requirements at competitive prices. Standard industry contracts generally do not provide protection against fuel price increases, nor do they ensure availability of supply; however, our code-share agreements with Delta, United, American, Alaska and US Airways provide for fuel used in the performance of the code-share agreements to be reimbursed by our major partners, thereby reducing our exposure to fuel price fluctuations. During the year ended December 31, 2013, United purchased the majority of the fuel for our United aircraft under contract directly from its fuel vendors; and Delta purchased the majority of the fuel for our Delta aircraft under contract directly from its fuel vendors. A substantial increase in the price of jet fuel, to the extent our fuel costs are not reimbursed, or the lack of adequate fuel supplies in the future, could have a material adverse effect on our business, financial condition, results of operations or liquidity.

Employee Matters

Railway Labor Act

        Our relations with labor unions in the U.S. are governed by the Railway Labor Act (the "RLA"). Under the RLA, a labor union seeking to represent an unrepresented craft or class of employees is required to file with the National Mediation Board (the "NMB") an application alleging a representation dispute, along with authorization cards signed by at least 35% of the employees in that craft or class. The NMB then investigates the dispute and, if it finds the labor union has obtained a sufficient number of authorization cards, conducts an election to determine whether to certify the labor union as the collective bargaining representative of that craft or class. Under the NMB's usual rules, a labor union will be certified as the representative of the employees in a craft or class only if more than 50% of those employees vote for union representation. A certified labor union then enters into negotiations toward a collective bargaining agreement with the employer.

        Under the RLA, a collective bargaining agreement between an airline and a labor union does not expire, but instead becomes amendable as of a stated date. Either party may request that the NMB appoint a federal mediator to participate in the negotiations for a new or amended agreement. If no agreement is reached in mediation, the NMB may determine, at any time, that an impasse exists and offer binding arbitration. If either party rejects binding arbitration, a 30-day "cooling off" period begins. At the end of this 30-day period, the parties may engage in "self help," unless the U.S. President appoints a Presidential Emergency Board ("PEB") to investigate and report on the dispute. The appointment of a PEB maintains the "status quo" for an additional 60 days. If the parties do not reach agreement during this period, the parties may then engage in "self help." "Self help" includes, among other things, a strike by the union or the imposition of proposed changes to the collective bargaining agreement by the airline. The U.S. Congress and the President have the authority to prevent "self help" by enacting legislation that, among other things, imposes a settlement on the parties.

15

Collective Bargaining

        As of December 31, 2013, we had 18,358 full-time equivalent employees. Approximately 49% of these employees were represented by unions, including the employee groups listed in the table below. Notwithstanding the completion of the ExpressJet Combination, ExpressJet's employee groups continue to be represented by those unions who provided representation prior to the ExpressJet Combination. Accordingly, the following table refers to ExpressJet's employee groups based upon their union affiliations prior to the ExpressJet Combination.

Employee Group	Approximate Number of Active Employees Represented		Representatives	Status of Agreement
Atlantic Southeast Pilots		1,800	Air Line Pilots Association International	Amendable
Atlantic Southeast Flight Attendants		1,075	International Association of Machinists and Aerospace Workers	Amendable
Atlantic Southeast Flight Controllers		60	Transport Workers Union of America	Amendable
Atlantic Southeast Mechanics		700	International Brotherhood of Teamsters	Amendable
Atlantic Southeast Stock Clerks		70	International Brotherhood of Teamsters	Amendable
ExpressJet Delaware Pilots		2,900	Air Line Pilots Association International	Amendable
ExpressJet Delaware Flight Attendants		1,200	International Association of Machinists and Aerospace Workers	Amendable
ExpressJet Delaware Mechanics		1,000	International Brotherhood of Teamsters	Amendable
ExpressJet Delaware Dispatchers		85	Transport Workers Union of America	Amendable
ExpressJet Delaware Stock Clerks		100	International Brotherhood of Teamsters	Amendable

        The successful combination of ExpressJet Delaware and Atlantic Southeast and achievement of the anticipated benefits of our acquisition of ExpressJet Delaware will depend significantly on the results of our efforts to integrate the employee groups of Atlantic Southeast and ExpressJet Delaware and on maintaining productive employee relations. During December 2013, the Airline Pilots Association International ("ALPA"), which represents the Atlantic Southeast pilot and ExpressJet Delaware pilot groups, conducted a vote of the two employee groups, seeking approval of a joint collective bargaining agreement that ExpressJet had negotiated with ALPA representatives. The two employee groups rejected the joint collective bargaining agreement, which resulted in the agreements with those employee groups remaining amendable as indicated in the foregoing table. The decision of those employee groups to reject the joint collective bargaining agreement will preclude us from realizing some of the savings we had hoped to achieve through the ExpressJet Combination. ExpressJet intends to resume negotiations with ALPA in an effort to negotiate an acceptable agreement.

        The integration of the workforces of ExpressJet Delaware and Atlantic Southeast has been, and we anticipate it will continue to be, challenging. Completing the integration of the workforces of the two airlines will require the resolution of potentially difficult issues relating to representation of various

16

work groups and the relative seniority of the work groups at each carrier. Unexpected delays or expenses or other challenges to integrating the workforces could impact the anticipated synergies from the ExpressJet Combination and affect our financial performance.

        As of December 31, 2013, SkyWest and SkyWest Airlines collectively employed 9,717 full-time equivalent employees, consisting of 5,661 pilots and flight attendants, 2,461 customer service personnel, 1,400 mechanics and other maintenance personnel, and 195 administration and support personnel. None of these employees are currently represented by a union. Collective bargaining group organization efforts among SkyWest Airlines' employees do, however, occur from time to time and we anticipate that such efforts will continue in the future. If unionization efforts are successful, we may be subjected to risks of work interruption or stoppage and/or incur additional expenses associated with increased union representation of our employees. Neither SkyWest nor SkyWest Airlines has ever experienced a work stoppage due to a strike or other labor dispute, and we consider SkyWest Airlines' relationships with its employees to be good.

Government Regulation

        All interstate air carriers, including SkyWest Airlines and ExpressJet, are subject to regulation by the U.S. Department of Transportation (the "DOT"), the FAA and other governmental agencies. Regulations promulgated by the DOT primarily relate to economic aspects of air service. The FAA requires operating, air worthiness and other certificates; approval of personnel who may engage in flight, maintenance or operating activities; record-keeping procedures in accordance with FAA requirements; and FAA approval of flight training and retraining programs. Generally, governmental agencies enforce their regulations through, among other methods, certifications, which are necessary for the continued operations of SkyWest Airlines and ExpressJet, and proceedings, which can result in civil or criminal penalties or revocation of operating authority. The FAA can also issue maintenance directives and other mandatory orders relating to, among other things, grounding of aircraft, inspection of aircraft, installation of new safety-related items and the mandatory removal and replacement of aircraft parts.

        We believe SkyWest Airlines and ExpressJet are in compliance in all material respects with FAA regulations and hold all operating and airworthiness certificates and licenses which are necessary to conduct their respective operations. We incur substantial costs in maintaining current certifications and otherwise complying with the laws, rules and regulations to which SkyWest Airlines and ExpressJet are subject. SkyWest Airlines' and ExpressJet's flight operations, maintenance programs, record keeping and training programs are conducted under FAA approved procedures. All air carriers operating in the United States of America are required to comply with federal laws and regulations pertaining to noise abatement and engine emissions. All such air carriers are also subject to certain provisions of the Federal Communications Act of 1934, as amended, because of their extensive use of radio and other communication facilities. SkyWest Airlines and ExpressJet are also subject to certain federal and state laws relating to protection of the environment, labor relations and equal employment opportunity. We believe SkyWest Airlines and ExpressJet are in compliance in all material respects with these laws and regulations.

Environmental Matters

        SkyWest, SkyWest Airlines and ExpressJet are subject to various federal, state, local and foreign laws and regulations relating to environmental protection matters. These laws and regulations govern such matters as environmental reporting, storage and disposal of materials and chemicals and aircraft noise. We are, and expect in the future to be, involved in various environmental matters and conditions at, or related to, our properties. We are not currently subject to any environmental cleanup orders or actions imposed by regulatory authorities. We are not aware of any active material environmental investigations related to our assets or properties.

17

Safety and Security

        We are committed to the safety and security of our passengers and employees. Since the September 11, 2001 terrorist attacks, SkyWest Airlines and ExpressJet have taken many steps, both voluntarily and as mandated by governmental authorities, to increase the safety and security of their operations. Some of the safety and security measures we have taken with our code-share partners include: aircraft security and surveillance, positive bag matching procedures, enhanced passenger and baggage screening and search procedures, and securing of cockpit doors. We are committed to complying with future safety and security requirements.

Insurance

        SkyWest, SkyWest Airlines and ExpressJet maintain insurance policies we believe are of types customary in the industry and in amounts we believe are adequate to protect against material loss. These policies principally provide coverage for public liability, passenger liability, baggage and cargo liability, property damage, including coverage for loss or damage to our flight equipment, and workers' compensation insurance. We cannot assure, however, that the amount of insurance we carry will be sufficient to protect us from material loss.

Seasonality

        Our results of operations for any interim period are not necessarily indicative of those for the entire year, in part because the airline industry is subject to seasonal fluctuations and general economic conditions. Our operations are somewhat favorably affected by pleasure travel on our pro-rate routes, historically contributing to increased travel in the summer months, and are unfavorably affected by decreased business travel during the months from November through January and by inclement weather which can result in cancelled flights, principally during the winter months.

ITEM 1A.    RISK FACTORS

In addition to factors discussed elsewhere in this Report, the following are important risks which could adversely affect our future results. Additional risks and uncertainties not presently known to us or that we currently do not deem material may also impair our business operations. If any of the risks we describe below occur, or if any unforeseen risk develops, our operating results may suffer, our financial condition may deteriorate, the trading price of our common stock may decline and investors could lose all or part of their investment in us.

Risks Related to Our Operations

The amounts we receive under our code-share agreements may be less than the corresponding costs we incur.

        Under our code-share agreements with Delta, United, American, Alaska and US Airways, we are compensated for certain costs we incur in providing services. With respect to costs that are defined as "pass-through" costs, our code-share partner is obligated to pay to us the actual amount of the cost. With respect to other costs, our code-share partner is obligated to pay to us amounts based, in part, on pre-determined rates for certain costs. During the year ended December 31, 2013, approximately 20% of our code-share operating costs were pass-through costs and approximately 80% of our code-share operating costs were reimbursable at pre-determined rates. These pre-determined rates may not be based on the actual expenses we incur in delivering the associated services. If we incur expenses that are greater than the pre-determined reimbursement amounts payable by our code-share partners, our financial results will be negatively affected.

        There can be no assurance that the agreed-upon rates contemplated by our code-share agreements will be higher than the costs SkyWest Airlines and ExpressJet will incur to provide the services required

18

under their respective agreements. The rates and future rate adjustments could negatively affect our financial position and operating results.

Increased labor costs, strikes, labor disputes and increased unionization of our workforces may adversely affect our ability to conduct our business.

        Our business is labor intensive, requiring large numbers of pilots, flight attendants, mechanics and other personnel. Labor costs constitute a significant percentage of our total operating costs. For example, during the year ended December 31, 2013, our salary, wage and benefit costs constituted approximately 39% of our total operating costs. Increases in our labor costs could result in a material reduction in our earnings. Any new collective bargaining agreements entered into by other regional carriers with their work forces may also result in higher industry wages and increased pressure on us to increase the wages and benefits of our employees. Future agreements with unionized and non-unionized employees may be on terms that are not as attractive as our current agreements or comparable to agreements entered into by our competitors.

        Approximately 49% of our workforce is unionized. Strikes or labor disputes with our unionized employees may adversely affect our ability to conduct business. Relations between air carriers and labor unions in the U.S. are governed by the RLA, which provides that a collective bargaining agreement between an airline and a labor union does not expire, but instead becomes amendable as of a stated date. The RLA generally prohibits strikes or other types of self-help actions both before and after a collective bargaining agreement becomes amendable, unless and until the collective bargaining processes required by the RLA have been exhausted.

        SkyWest Airlines' employees are not currently represented by any union; however, collective bargaining group organization efforts among those employees occur from time to time. Such efforts will likely continue in the future and may ultimately result in some or all of SkyWest Airlines' employees being represented by one or more unions. Moreover, one or more unions representing ExpressJet employees may seek a single carrier determination by the National Mediation Board, which could require SkyWest Airlines to recognize such union or unions as the certified bargaining representative of SkyWest Airlines' employees. One or more unions representing ExpressJet employees may also assert that SkyWest Airlines' employees should be subject to ExpressJet's collective bargaining agreements. If SkyWest Airlines' employees were to unionize or be deemed to be represented by one or more unions, negotiations with unions representing SkyWest Airlines' employees could divert management attention and disrupt operations, which may result in increased operating expenses and may negatively impact our financial results. Moreover, we cannot predict the outcome of any future negotiations relating to union representation or collective bargaining agreements. Agreements reached in collective bargaining may increase our operating expenses and negatively impact our financial results.

The integration of the Atlantic Southeast and ExpressJet Delaware workforces will present significant challenges, including the possibility of labor-related disagreements that may adversely affect our operations.

        The successful integration of Atlantic Southeast and ExpressJet Delaware and achievement of the anticipated benefits of the ExpressJet Merger largely depend upon the successful combination of the former employee groups of Atlantic Southeast and ExpressJet Delaware, and on maintaining productive employee relations. The integration of the workforces of the two airlines will require the resolution of potentially difficult issues relating to representation of various employee groups and the relative seniority of the employee groups at each carrier. Unexpected delays, expenses or other challenges to integrating the workforces could impact the anticipated synergies from the combination of Atlantic Southeast and ExpressJet Delaware and affect ExpressJet's operations and financial performance.

        In order to integrate the former employee groups of Atlantic Southeast and ExpressJet Delaware, ExpressJet must negotiate a joint collective bargaining agreement covering each combined employee

19

group. The process for integrating the former labor groups of ExpressJet Delaware and Atlantic Southeast is governed by a combination of the RLA, the McCaskill-Bond Amendment, and where applicable, the existing provisions of each company's collective bargaining agreements and union policy. Pending operational integration, ExpressJet will apply the terms of the existing collective bargaining agreements unless other terms have been negotiated. Under the McCaskill-Bond Amendment, seniority integration must be accomplished in a "fair and equitable" manner consistent with the process set forth in the Allegheny-Mohawk Labor Protective Provisions or internal union merger policies, if applicable. Employee dissatisfaction with the results of the seniority integration may lead to litigation that in some cases could delay implementation of the integrated seniority list. The National Mediation Board has exclusive authority to resolve representation disputes arising out of airline mergers.

        During December 2013, ALPA, which represents the Atlantic Southeast pilot and ExpressJet Delaware pilot groups, conducted a vote of the two employee groups, seeking approval of a joint collective bargaining agreement that ExpressJet had negotiated with ALPA representatives. The two employee groups rejected the joint collective bargaining agreement, which resulted in the agreements with those employee groups remaining amendable. The decision of those employee groups to reject the joint collective bargaining agreement will preclude us from realizing some of the savings we had hoped to achieve through the ExpressJet Combination.

        We can provide no assurance that a successful or timely resolution of labor negotiations for the former labor groups of Atlantic Southeast and ExpressJet Delaware will be achieved. There is a risk that unions or individual employees might pursue judicial or arbitral claims arising out of changes implemented as a result of the ExpressJet Combination. There is also a possibility that employees or unions could engage in job actions such as slow-downs, work-to-rule campaigns, sick-outs or other actions designed to disrupt ExpressJet's normal operations, in an attempt to pressure ExpressJet in collective bargaining negotiations. Although the RLA makes such actions unlawful until the parties have been lawfully released to self-help, and ExpressJet can seek injunctive relief against premature self-help, such actions can cause significant harm even if ultimately enjoined.

The Airline Safety and Pilot Training Improvement Act of 2009 could negatively affect our operations and our financial condition.

        The Airline Safety and Pilot Training Improvement Act of 2009 (the "Improvement Act") was enacted in August of 2010 and became effective August 2013. The Improvement Act adds new certification requirements for entry-level commercial pilots, requires additional emergency training, improves availability of pilot records and mandates stricter rules to minimize pilot fatigue.

        The Improvement Act also:

•

Requires that all airline pilots obtain an Airline Transport Pilot license, which was previously only required for captains.

•

Mandates that the FAA set up a new database of pilot records, including records to be provided by airlines and other sources, so that airlines will have access to more information before they hire pilots.

•

Requires the FAA to issue new regulations governing the airlines' obligations to submit pilot records and the requirements for airlines to obtain access for information in the database before the database portion of the Improvement Act becomes effective.

•

Directs the FAA to rewrite the rules for how long pilots are allowed to work and how much rest they must have before working.

        The implementation of the Improvement Act (and associated regulations) may increase our compliance and FAA reporting obligations, have a negative effect on pilot scheduling, work hours and

20

the number of pilots required to be employed for our operations or other aspects of our operations, and negatively impact our operations and financial condition.

The supply of pilots to the airline industry may be limited.

        On July 8, 2013, as was directed by the U.S. Congress, FAA issued more robust, new pilot qualification standards, granting recognition of historical FAA and airline industry crew member flight training standards. With the application of the new rules, the supply of qualified pilot candidates eligible for hiring by the airline industry has been dramatically reduced. If, we are unable to secure the services of sufficient eligible pilots to staff our routes, our operations and financial results could be materially affected.

        New student pilot certificates have decreased dramatically, especially in the past three years, and subsequently the pool of eligible pilots qualified to be new hires into the airline industry has been diminishing significantly. In addition, the major network air carriers have done only minimal pilot hiring in the past several years because of the industry capacity reduction following the events of September 11, 2001, the most recent economic recession that began in the fall of 2008, and the increase in statutory mandatory retirement age for pilots from age 60 to age 65. Due to revised pilot duty time rules that are effective January of 2014, there has been an acceleration of pilot staffing in recent months which on its own merits, should be a one-time increase in pilot staffing amongst all air carriers affected by FAR part 117. Also effective January 2014, mandatory pilot retirement rules will again begin to force major network carriers to hire replacement pilots.

        The current pilot shortage may increase training costs and we may not have enough pilots to conduct our operations. The lack of qualified pilots to conduct our operations would negatively impact our operations and financial condition.

We are highly dependent on Delta and United.

        As of December 31, 2013, we had 703 aircraft out of our total 757 aircraft operating under a fixed fee contract or a revenue sharing agreement with either Delta or United. If our code-share agreements with Delta or United are terminated, we would be significantly impacted and likely would not have an immediate source of revenue or earnings to offset such loss. A termination of either of these agreements would likely have a material adverse effect on our financial condition, operating revenues and net income unless we are able to enter into satisfactory substitute arrangements for the utilization of the affected aircraft by other code-share partners, or, alternatively, obtain the airport facilities and gates and make the other arrangements necessary to fly as an independent airline. We may not be able to enter into substitute code-share arrangements, and any such arrangements we might secure may not be as favorable to us as our current agreements. Operating our airlines independent from major partners would be a significant departure from our business plan, would likely be very difficult and would likely require significant time and resources, which may not be available to us at that point.

        The current terms of the SkyWest Airlines and ExpressJet Delta Connection Agreements are subject to certain early termination provisions. Delta's termination rights include cross-termination rights (meaning that a breach by either of SkyWest Airlines or ExpressJet of its Delta Connection Agreement could, under certain circumstances, permit Delta to terminate any or all of the Delta Connection Agreements), the right to terminate each of the agreements upon the occurrence of certain force majeure events (including certain labor-related events) that prevent SkyWest Airlines or ExpressJet from performance for certain periods and the right to terminate each of the agreements if SkyWest Airlines or ExpressJet, as applicable, fails to maintain competitive base rate costs, subject to certain rights of SkyWest Airlines to take corrective action to reimburse Delta for lost revenues. The current terms of the SkyWest Airlines and ExpressJet United Express Agreements are subject to certain early termination provisions and subsequent renewals. United may terminate the SkyWest Airlines and

21

ExpressJet United Express Agreements due to an uncured breach by SkyWest Airlines or ExpressJet of certain operational or performance provisions, including measures and standards related to flight completions, baggage handling and on-time arrivals. The current terms of the United CPA are subject to certain early termination provisions and subsequent renewals. United may terminate the United CPA due to an uncured breach by ExpressJet of certain operational and performance provisions, including measures and standards related to flight completions and on-time arrivals.

        We currently use the systems, facilities and services of Delta and United to support a significant portion of our operations, including airport and terminal facilities and operations, information technology support, ticketing and reservations, scheduling, dispatching, fuel purchasing and ground handling services. If Delta or United were to cease any of these systems, close any of these facilities or no longer provide these services to us, due to termination of one of our code-share agreements, a strike or other labor interruption by Delta or United personnel or for any other reason, we may not be able to replace those systems, facilities or services on terms and conditions as favorable as those we currently receive, or at all. Since our revenues and operating profits are dependent on our level of flight operations, we could then be forced to significantly reduce our operations. Furthermore, upon certain terminations of our code-share agreements, Delta and United could require us to sell or assign to them facilities and assets, including maintenance facilities, we use in connection with the code-share services we provide. As a result, in order to offer airline service after termination of any of our code-share agreements, we may have to replace these facilities, assets and services. We may be unable to arrange such replacements on satisfactory terms, or at all.

Maintenance costs will likely continue to increase as the age of our regional jet fleet increases.

        The average age of our CRJ200s, ERJ145s, CRJ700s and CRJ900s is approximately 12.1 years, 12.0 years, 8.6 years and 6.1 years respectively. All of the parts on these aircraft are no longer under warranty and we have started to incur more heavy airframe inspections and engine overhauls on those aircraft. Our non-engine maintenance costs are expected to continue to increase on our CRJ200, ERJ145, CRJ700 and CRJ900 fleets. Our-non engine maintenance costs will increase significantly, both on an absolute basis and as a percentage of our operating expenses, as our fleet ages. If our maintenance costs increase at a higher rate than amounts we can recover in revenue, we will have a negative impact on our financial results.

We may be negatively impacted if Delta or United experiences significant financial difficulties in the future.

        For the year ended December 31, 2013 approximately 94.5% of the available seat miles ("ASMs") generated in our operations were attributable to our code-share agreements with Delta and United. If Delta or United experiences significant financial difficulties, we would likely be negatively affected. For example, volatility in fuel prices may negatively impact Delta's and United's results of operations and financial condition. Among other risks, Delta and United are vulnerable both to unexpected events (such as additional terrorist attacks or additional spikes in fuel prices) and to deterioration of the operating environment (such as a recession or significant increased competition). There is no assurance that Delta or United will be able to operate successfully under these financial conditions.

        In light of the importance of our code-share agreements with Delta and United to our business, a default by Delta or United under any of these agreements, or the termination of these agreements could jeopardize our operations. Such events could leave us unable to operate many of our current aircraft, as well as additional aircraft we are obligated to purchase, which would likely result in a material adverse effect on our operations and financial condition.

        The financial condition of Delta and United will continue to pose risks for our operations. Serial bankruptcies are not unprecedented in the commercial airline industry, and Delta and/or United could file for bankruptcy, in which case our code-share agreements could be subject to termination under the

22

U.S. Bankruptcy Code. Regardless of whether subsequent bankruptcy filings prove to be necessary, Delta and United have required, and will likely continue to require, our participation in efforts to reduce costs and improve their respective financial positions. These efforts could result in lower utilization rates of our aircraft, lower departure rates on the contract flying portion of our business, more volatile operating margins and more aggressive contractual positions, which could result in additional litigation. We believe that any of these developments could have a negative effect on many aspects of our operations and financial condition.

SkyWest Airlines and ExpressJet are engaged in litigation with Delta, which may negatively impact our financial results and our relationship with Delta

        During the quarter ended December 31, 2007, Delta notified SkyWest, SkyWest Airlines and Atlantic Southeast of a dispute under the Delta Connection Agreements executed by Delta with SkyWest Airlines and Atlantic Southeast. The dispute relates to the allocation of liability for certain irregular operation ("IROP") expenses paid by SkyWest Airlines and Atlantic Southeast to their passengers and vendors under certain situations. During the period between the execution of the Delta Connection Agreements in September 2005 and December 2007, SkyWest Airlines and Atlantic Southeast passed through to Delta IROP expenses that were paid pursuant to Delta's policies, and Delta accepted and reimbursed those expenses. Delta now claims it is obligated to reimburse only a fraction of the IROP expenses. As a result, Delta withheld a combined total of approximately $25 million (pre-tax) from one of the weekly scheduled wire payments to SkyWest Airlines and Atlantic Southeast during December 2007. Since December 2007, Delta has continued to withhold payments from the weekly scheduled wire payments to SkyWest Airlines and Atlantic Southeast (now ExpressJet), and has disputed subsequent billings for IROP expenses. Since July 1, 2008, we have not recognized revenue related to IROP expense reimbursements withheld by Delta because collection of those reimbursements is the subject of litigation and is not reasonably assured. As of December 31, 2013, we had recognized a cumulative total of $31.7 million of revenue associated with the funds withheld by Delta prior to July 1, 2008.The current status of the litigation with Delta is summarized below in Item 3. Legal Proceedings.

        There can be no assurance that the dispute between SkyWest Airlines and ExpressJet, on the one hand, and Delta, on the other hand, will be resolved consistent with the position taken by SkyWest Airlines and ExpressJet. If the dispute is not resolved consistent with the position taken by SkyWest Airlines and ExpressJet, our financial results would be negatively impacted. The litigation may have other negative effects on our relationship with Delta and our operations under the existing Delta Connection Agreements.

Disagreements regarding the interpretation of our code-share agreements with our major partners could have an adverse effect on our operating results and financial condition.

        SkyWest, SkyWest Airlines and ExpressJet are parties to code-share agreements with Delta and United. For the year ended December 31, 2013, approximately 94.5% of our ASMs were attributable to flights we flew under those agreements. We anticipate that, for the foreseeable future, substantially all of our revenues will be generated under existing or future code-share agreements.

        Contractual agreements, such as our code-share agreements, are subject to interpretation and disputes may arise under such agreements if the parties to an agreement apply different interpretations to that agreement. Those disputes may divert management time and resources from the core operation of the business, and may result in litigation, arbitration or other forms of dispute resolution.

23

        In recent years we have experienced disagreements with our major partners regarding the interpretation of various provisions of our code-share agreements. Some of those disagreements have resulted in litigation (see the preceding risk factor entitled "SkyWest Airlines and ExpressJet are engaged in litigation with Delta, which may negatively impact our financial results and our relationship with Delta"), and we may be subject to additional disputes and litigation in the future. Those disagreements have also required a significant amount of management time and financial resources.

        To the extent that we continue to experience disagreements regarding the interpretation of our code-share or other agreements, we will likely expend valuable management time and financial resources in our efforts to resolve those disagreements. Those disagreements may result in litigation, arbitration or other proceedings. Furthermore, there can be no assurance that any or all of those proceedings, if commenced, would be resolved in our favor. An unfavorable result in any such proceeding could have adverse financial consequences or require us to modify our operations. Such disagreements and their consequences could have an adverse effect on our operating results and financial condition.

We may not receive FAA approval to add the Embraer ERJ175 aircraft type to the SkyWest Airlines' operating certificate

        The FAA regulates the safety of SkyWest Airlines' and ExpressJet's operations. SkyWest Airlines is in the process of obtaining FAA authorization to add the Embraer ERJ175 aircraft type ("E175") to SkyWest Airlines' operating certificate. SkyWest Airlines has executed an agreement with Embraer regarding the delivery dates for the E175s, beginning in 2014. SkyWest Airlines has also entered into a code share agreement with United which would engage SkyWest Airlines to operate 40 E175s for United. If the FAA does not approve the addition of the E175 aircraft type to SkyWest Airlines' certificate before the scheduled in-service date with United, SkyWest Airlines could be in breach of its code-share agreement with United and many aspects of our operations and financial condition could be impacted.

We have a significant amount of contractual obligations.

        As of December 31, 2013, we had a total of approximately $1.5 billion in total long-term debt obligations. Substantially all of this long-term debt was incurred in connection with the acquisition of aircraft, engines and related spare parts. We also have significant long-term lease obligations primarily relating to our aircraft fleet. These leases are classified as operating leases and therefore are not reflected as liabilities in our consolidated balance sheets. At December 31, 2013, we had 570 aircraft under lease, with remaining terms ranging from one to 13 years. Future minimum lease payments due under all long-term operating leases were approximately $1.9 billion at December 31, 2013. At a 5.8% discount factor, the present value of these lease obligations was equal to approximately $1.5 billion at December 31, 2013. Our high level of fixed obligations could impact our ability to obtain additional financing to support additional expansion plans or divert cash flows from operations and expansion plans to service the fixed obligations.

Our fleet replacement will require a significant increase in our leverage and the related cash outflows.

        We currently have 260 CRJ200s with an average life of 12.1 years, 242 ERJ145s with an average life of 12 years and 45 Brasilia turboprops with an average life of 16.5 years. We anticipate that over the next several years, we will continue to replace these aircraft with large regional jets or turboprops. Our fleet replacement strategy will require significant amounts of capital to acquire these large regional jets or turboprops.

        There can be no assurance that our operations will generate sufficient cash flow or liquidity to enable us to obtain the necessary aircraft acquisition financing to replace our current fleet, or to make

24

required debt service payments related to our existing obligations. Even if we meet all required debt, lease, and purchase obligations, the size of these long-term obligations could negatively affect our financial condition, results of operations, and the price of our common stock in many ways, including:

•

increasing the cost, or limiting the availability of, additional financing for working capital, acquisitions or other purposes;

•

limiting the ways in which we can use our cash flow, much of which may have to be used to satisfy debt and lease obligations; and

•

adversely affecting our ability to respond to changing business or economic conditions or continue our growth strategy.

        If we need additional capital and cannot obtain such capital on acceptable terms, or at all, we may be unable to realize our fleet replacement plans or take advantage of unanticipated opportunities

We may be limited from expanding our flying within the Delta and United flight systems, and there are constraints on our ability to provide airline services to airlines other than Delta and United.

        Additional growth opportunities within the Delta and United flight systems are limited by various factors. Except as currently contemplated by our existing code-share agreements, we cannot assure that Delta and United will contract with us to fly any additional aircraft. We may not receive additional growth opportunities, or may agree to modifications to our code-share agreements that reduce certain benefits to us in order to obtain additional aircraft, or for other reasons. Given the troubled nature of the airline industry, we believe that some of our competitors may be more inclined to accept reduced margins and less favorable contract terms in order to secure new or additional code-share operations. Even if we are offered growth opportunities by our major partners, those opportunities may involve economic terms or financing commitments that are unacceptable to us. Any one or more of these factors may reduce or eliminate our ability to expand our flight operations with our existing code-share partners. We also cannot provide any assurance that we will be able to obtain the additional ground and maintenance facilities, including gates, and support equipment, to expand our operations. The failure to obtain these facilities and equipment would likely impede our efforts to implement our business strategy and could materially and adversely affect our operating results and our financial condition.

        Our business model depends on major airlines, including Delta and United, electing to contract with us instead of operating their own regional jets. Some major airlines own their own regional airlines or operate their own regional jets instead of entering into contracts with regional carriers. We have no guarantee that in the future our code-share partners will choose to enter into contracts with us instead of operating their own regional jets. Our partners are not prohibited from doing so under our code-share agreements. A decision by Delta or United to phase out code-share relationships and instead acquire and operate their own regional jets could have a material adverse effect on our financial condition, results of operations or the price of our common stock.

        Additionally, our code-share agreements limit our ability to provide airline services to other airlines in certain major airport hubs of each of Delta and United. Under the SkyWest Airlines Delta Connection Agreement, our growth is contractually restricted in Atlanta, Cincinnati, Orlando and Salt Lake City. Under the ExpressJet Delta Connection Agreement, our growth is restricted in Atlanta, Cincinnati, New York (John F. Kennedy International Airport), Orlando and Salt Lake City. Under the SkyWest Airlines United Express Agreement, growth is restricted in Chicago (O'Hare International Airport), Denver, San Francisco, Seattle/Tacoma and Washington D.C. (Dulles International Airport). Due to the fluctuations in our schedules, which are established primarily by our major partners, there may be times that the number of flights we fly to and from a particular airport may exceed the limitations set forth in one or more of our code-share agreements. The breach of those limitations

25

could constitute a breach of the applicable code-share agreement, which could have a material adverse effect on our operations.

We could be adversely affected by an outbreak of a disease that affects travel behavior.

        In 2010, there was an outbreak of the H1N1 flu virus which had an adverse impact throughout our network. In 2003, there was an outbreak of Severe Acute Respiratory Syndrome ("SARS"), which had an adverse impact on travel behavior. In addition, in the past there have been concerns about outbreaks or potential outbreaks of other diseases, such as avian flu. Any outbreak of a disease (including a worsening of the outbreak of the H1N1 flu virus) that affects travel behavior could have a material adverse impact on our operating results and financial condition. In addition, outbreaks of disease could result in quarantines of our personnel or an inability to access facilities or our aircraft, which could adversely affect our operations and financial condition.

Interruptions or disruptions in service at one of our hub airports, due to adverse weather or for any other reason, could have a material adverse impact on our operations.

        We currently operate primarily through hubs in Atlanta, Los Angeles, Houston, Minneapolis, Detroit, San Francisco, Salt Lake City, Chicago, Denver, Houston, Washington, D.C., Newark, Cleveland and the Pacific Northwest. Nearly all of our flights either originate from or fly into one of these hubs. Our revenues depend primarily on our completion of flights and secondarily on service factors such as timeliness of departure and arrival. Any interruptions or disruptions could, therefore, severely and adversely affect us. Extreme weather can cause flight disruptions, and, during periods of storms or adverse weather, fog, low temperatures, etc., our flights may be canceled or significantly delayed. Hurricanes Katrina and Rita and Superstorm Sandy, in particular, caused severe disruption to air travel in the affected areas and adversely affected airlines operating in the region, including ExpressJet. We operate a significant number of flights to and from airports with particular weather difficulties, including Atlanta, Salt Lake City, Chicago, San Francisco, Newark and Denver. A significant interruption or disruption in service at one of our hubs, due to adverse weather or otherwise, could result in the cancellation or delay of a significant portion of our flights and, as a result, could have a severe adverse impact on our, operations and financial performance.

Economic and industry conditions constantly change, and negative economic conditions in the United States and other countries may create challenges for us that could materially and adversely affect our operations and financial condition.

        Our operations and financial condition are affected by many changing economic and other conditions beyond our control, including, among others:

•

disruptions in the credit markets, which have resulted in greater volatility, less liquidity, widening of credit spreads, and decreased availability of financing;

•

actual or potential changes in international, national, regional and local economic, business and financial conditions, including recession, inflation, higher interest rates, wars, terrorist attacks or political instability;

•

changes in consumer preferences, perceptions, spending patterns or demographic trends;

•

changes in the competitive environment due to industry consolidation and other factors;

•

actual or potential disruptions to U.S. air traffic control systems;

•

outbreaks of diseases that affect travel behavior; and

•

weather and natural disasters.

26

        The aggregate effect of any, or some combination, of the foregoing economic and industry conditions on our operations or financial condition is virtually impossible to forecast; however, the occurrence of any or all of such conditions in a significant manner could materially and adversely affect our operations and financial condition.

We have been adversely affected by increases in fuel prices, and we would be adversely affected by disruptions in the supply of fuel.

        Dependence on foreign imports of crude oil, limited refining capacity and the possibility of changes in government policy on jet fuel production, transportation and marketing make it impossible to predict the future availability of jet fuel. If there are additional outbreaks of hostilities or other conflicts in oil-producing areas or elsewhere, or a reduction in refining capacity (due to weather events, for example), or governmental limits on the production or sale of jet fuel, there could be a reduction in the supply of jet fuel and significant increases in the cost of jet fuel. Major reductions in the availability of jet fuel or significant increases in its cost, or a continuation of current high prices for a significant period of time, would have a material adverse impact on us.

        Pursuant to our contract flying arrangements, our major partners have agreed to bear the economic risk of fuel price fluctuations on our contracted flights. We bear the economic risk of fuel price fluctuations on our pro-rate operations. As of December 31, 2013, essentially all of our Brasilia turboprops flown for Delta were flown under pro-rate arrangements, while approximately 58% of our Brasilia turboprops flown in the United system were flown under pro-rate arrangements. As of December 31, 2013, we operated 17 CRJ200s under a pro-rate agreement with United. We also operate eight CRJ200 under a pro-rate agreement with Delta and one CRJ200 under a pro-rate arrangement with US Airways. Our operating and financial results with respect to these pro-rate arrangements can be affected by the price and availability of jet fuel and in the event we are unable to pass on increased fuel prices to our pro-rate customers by increasing fares our financial performance would be adversely impacted.

Reduced utilization levels of our aircraft under our code-share agreements would adversely impact our financial results.

        The majority of our code-share agreements set forth minimum levels of flight operations which our major partners are required to schedule for our operations and we are required to provide. These minimum flight operating levels are intended to compensate us for reduced operating efficiencies caused by production decreases made by our major partners under our respective code-share agreements. Generally, our major partners have utilized our flight operations at levels which exceed the minimum levels set forth in our code-share agreements, however, in recent years our major partners have reduced our utilization to levels which, at times, have been lower than the levels required by our code-share agreements. If our major partners schedule the utilization of our aircraft below historical levels (including taking into account the stage length and frequency of our scheduled flights), we may not be able to maintain operating efficiencies previously obtained, which would negatively impact our operating results and financial condition. Additionally, our major partners may change routes and frequencies of flights, which can shorten flight trip lengths. Changes in schedules may increase our flight costs, which could exceed the reimbursed rates paid by our major partners. Continued reduced utilization levels of our aircraft or other changes to our schedules under our code-share agreements would adversely impact our financial results.

There are long-term risks related to supply and demand of regional aircraft associated with our regional airline services strategy.

        Our major airline partners have indicated that their committed supply of regional airline capacity is larger than they desire given current market conditions. Specifically, they have identified an

27

oversupply of 50-seat regional jets under contractual commitments with regional airlines. Delta in particular has reduced both the number of 50-seat regional jets within its network and the number of regional airlines with which it contracts. There are currently more than 300 50-seat aircraft within the Delta Connection system. In addition to reducing the number of 50-seat jets under contract, major airlines have reduced the utilization of regional aircraft, thereby reducing the revenue paid to regional airlines under capacity purchase agreements (See the risk factor titled "Reduced utilization levels of our aircraft under our code-share agreements would adversely impact our financial results" for additional details). This decrease has had, and may continue to have, a negative impact on our regional airline services revenue and financial results.

Declining interest rates could have a negative effect on our financial results.

        Our earnings are affected by changes in interest rates due to the amount of our variable rate long-term debt and the amount of cash and securities we hold. Under our contractual arrangements with our major partners, we are directly reimbursed for interest expense on debt-financed aircraft as a pass-through cost. The reimbursement of the interest expense is recorded as passenger revenue in our consolidated statements of income. Thus, a decline in interest expense associated with contract aircraft would likely be offset by a reduced aircraft ownership cost passed through to our major partners. Interest expense decreased $8.7 million, or 11.3%, during the year ended December 31, 2013, compared to the year ended December 31, 2012. The decrease in interest expense was substantially due to a decrease in interest rates and the majority of this reduction was passed through to our major partners. Interest income decreased $4.2 million, or 53.5% during the year ended December 31, 2013, compared to the year ended December 31, 2012. Interest income is not a component of our contractual arrangements with our major partners. If interest rates were to decline, our major partners would receive the principal benefit of the interest expense decline, since interest expense is generally passed through to our major partners; however, if declining interest rates reduce our interest income, our financial results will be negatively affected.

Our insurance costs have increased and further increases in insurance costs or reductions in coverage could have an adverse impact on us.

        We carry insurance for public liability, passenger liability, property damage and all-risk coverage for damage to our aircraft. As a result of terrorist attacks occurring during recent years, aviation insurers significantly reduced the amount of insurance coverage available to commercial air carriers for liability to persons other than employees or passengers for claims resulting from acts of terrorism, war or similar events (war-risk coverage). At the same time, these insurers significantly increased the premiums for aviation insurance in general.

        The U.S. government has agreed to provide commercial war-risk insurance for U.S.-based airlines through December 31, 2014, covering losses to employees, passengers, third parties and aircraft. If the U.S. government ceases to provide such insurance beyond that date, or reduces the coverage provided by such insurance, we will attempt to purchase insurance coverage, likely with a narrower scope, from commercial insurers at an additional cost. To the extent this coverage is not available at commercially reasonable rates, we would be adversely affected.

        While the price of commercial insurance has generally declined since the period immediately after the 2001 terrorist attacks, in the event commercial insurance carriers further reduce the amount of insurance coverage available to us, or significantly increase the cost of obtaining such coverage, we would be adversely affected.

28

We are increasingly dependent on technology, and if our technology fails or we are unable to continue to invest in new technology, our business may be adversely affected.

        We have become increasingly dependent on technology initiatives to reduce costs and to enhance customer service in order to compete in the current business environment. The performance and reliability of our technology are critical to our ability to compete effectively. Technology initiatives will continue to require significant capital investments in order to deliver these expected benefits. If we are unable to make these investments, our business and operations could be negatively affected. In addition, we may face challenges associated with integrating complex technology systems formerly operated by Atlantic Southeast and ExpressJet Delaware. If we are unable to manage these challenges effectively, our business and operations could be negatively affected.

        In addition, any internal technological error or failure or large scale external interruption in the technology infrastructure we depend on, such as power, telecommunications or the internet, may disrupt our internal network. Any individual, sustained or repeated failure of technology could impact our customer service and result in increased costs. Like most companies, our technology systems and related data may be vulnerable to a variety of sources of interruption due to events beyond our control, including natural disasters, terrorist attacks, telecommunications failures, computer viruses, hackers and other security issues. While we have in place, and continue to invest in, technology security initiatives and disaster recovery plans, these measures may not be adequate or implemented properly to prevent a business disruption and mitigate the resulting adverse financial consequences.

Our business could be harmed if we lose the services of our key personnel.

        Our business depends upon the efforts of our chief executive officer, Jerry C. Atkin, and our other key management and operating personnel. We may have difficulty replacing management or other key personnel who cease to be employed by us and, therefore, the loss of the services of any of these individuals could harm our business. We do not maintain key-man insurance on any of our executive officers.

Risks Related to the Airline Industry

We may be materially affected by uncertainties in the airline industry.

        The airline industry has experienced tremendous challenges in recent years and will likely remain volatile for the foreseeable future. Among other factors, the financial challenges faced by major and regional carriers, including American, United, US Airways, Endevor and Mesa, the slowing U.S. economy and continuing hostilities in the Middle East and other regions have significantly affected, and are likely to continue to affect, the U.S. airline industry. These events have resulted in declines and shifts in passenger demand, increased insurance costs, increased government regulations and tightened credit markets, all of which have affected, and will continue to affect, the operations and financial condition of participants in the industry, including us, major carriers (including our major partners), low-cost carriers, competitors and aircraft manufacturers. These industry developments raise substantial risks and uncertainties, which will affect us, major carriers (including our major partners), competitors and aircraft manufacturers in ways that we are unable to currently predict.

The airline industry is highly competitive and has undergone a period of consolidation and transition leaving fewer potential code-share partners.

        The airline industry is highly competitive. We not only compete with other regional airlines, some of which are owned by or operated as code-share partners of major airlines, but we also face competition from low-cost carriers and major airlines on many of our routes. Low-cost carriers such as Southwest, JetBlue, US Airways and Frontier among others, operate at many of our hubs, resulting in significant price competition. Additionally, a large number of other carriers operate at our hubs,

29

creating intense competition. Certain of our competitors are larger and have significantly greater financial and other resources than we do. Moreover, federal deregulation of the industry allows competitors to rapidly enter our markets and to quickly discount and restructure fares. The airline industry is particularly susceptible to price discounting because airlines incur only nominal costs to provide service to passengers occupying otherwise unsold seats. Increased fare competition could adversely affect our operations and the price of our common stock. The airline industry has undergone substantial consolidation, and it may in the future undergo additional consolidation. Recent examples include the merger between American and US Airways in December 2013, United and Continental in October 2010, Delta and Northwest Airlines, Inc. in November 2008, as well as the merger of Southwest and AirTran Airways, Inc. ("AirTran") during 2011. We understand that several airlines are currently in discussions related to consolidation in the industry. Other developments include domestic and international code-share alliances between major carriers. Any additional consolidation or significant alliance activity within the airline industry could limit the number of potential partners with whom we could enter into code-share relationships and could have a material adverse effect on our relationships with our code-share partners.

        Due, in part, to the dynamic nature of the airline industry, major airlines may also make other strategic changes such as changing or consolidating hub locations. If our major partners were to make changes such as these in their strategy and operations, our operations and financial results could be adversely impacted.

Terrorist activities or warnings have dramatically impacted the airline industry, and will likely continue to do so.

        The terrorist attacks of September 11, 2001 and their aftermath have negatively impacted the airline industry in general, including our operations. The primary effects experienced by the airline industry include a substantial loss of passenger traffic and revenue. Although, to some degree, airline passenger traffic and revenue have recovered since the September 11^th attacks, additional terrorist attacks could have a similar or even more pronounced effect. Even if additional terrorist attacks are not launched against the airline industry, there will be lasting consequences of the attacks, including increased security and insurance costs, increased concerns about future terrorist attacks, increased government regulation and airport delays due to heightened security. Additional terrorist attacks and the fear of such attacks could negatively impact the airline industry, and result in further decreased passenger traffic and yields, increased flight delays or cancellations associated with new government mandates, as well as increased security, fuel and other costs. We cannot provide any assurance that these events will not harm the airline industry generally or our operations or financial condition in particular.

We are subject to significant governmental regulation.

        All interstate air carriers, including SkyWest Airlines and ExpressJet, are subject to regulation by the DOT, the FAA and other governmental agencies. Regulations promulgated by the DOT primarily relate to economic aspects of air service. The FAA requires operating, air worthiness and other certificates; approval of personnel who may engage in flight, maintenance or operation activities; record keeping procedures in accordance with FAA requirements; and FAA approval of flight training and retraining programs. We cannot predict whether we will be able to comply with all present and future laws, rules, regulations and certification requirements or that the cost of continued compliance will not have a material adverse effect on our operations. We incur substantial costs in maintaining our current certifications and otherwise complying with the laws, rules and regulations to which we are subject. A decision by the FAA to ground, or require time-consuming inspections of or maintenance on, all or any of our aircraft for any reason may have a material adverse effect on our operations. In addition to state and federal regulation, airports and municipalities enact rules and regulations that affect our operations. From time to time, various airports throughout the country have considered limiting the use of smaller aircraft, such as our aircraft, at such airports. The imposition of any limits on the use of our aircraft at any airport at which we operate could have a material adverse effect on our operations.

30

The occurrence of an aviation accident involving our aircraft would negatively impact our operations and financial condition.

        An accident or incident involving one of our aircraft could result in significant potential claims of injured passengers and others, as well as repair or replacement of a damaged aircraft and its consequential temporary or permanent loss from service. In the event of an accident, our liability insurance may not be adequate to offset our exposure to potential claims and we may be forced to bear substantial losses from the accident. Substantial claims resulting from an accident in excess of our related insurance coverage would harm our operational and financial results. Moreover, any aircraft accident or incident, even if fully insured, could cause a public perception that our operations are less safe or reliable than other airlines.

Risks Related to Our Common Stock

We can issue additional shares without shareholder approval.

        Our Restated Articles of Incorporation, as amended (the "Restated Articles"), authorize the issuance of up to 120,000,000 shares of common stock, all of which may be issued without any action or approval by our shareholders. As of December 31, 2013, we had 51,230,066 shares outstanding. In addition, as of December 31, 2013, we had equity-based incentive plans under which 3,918,545 shares are reserved for issuance and an employee stock purchase plan under which 1,555,794 shares are reserved for issuance, both of which may dilute the ownership interest of our shareholders. Our Restated Articles also authorize the issuance of up to 5,000,000 shares of preferred stock. Our board of directors has the authority to issue preferred stock with the rights and preferences, and at the price, which it determines. Any shares of preferred stock issued would likely be senior to shares of our common stock in various regards, including dividends, payments upon liquidation and voting. The value of our common stock could be negatively affected by the issuance of any shares of preferred stock.

The amount of dividends we pay may decrease or we may not pay dividends.

        Historically, we have paid dividends in varying amounts on our common stock. The future payment and amount of cash dividends will depend upon our financial condition and results of operations, loan covenants and other factors deemed relevant by our board of directors. There can be no assurance that we will continue our practice of paying dividends on our common stock or that we will have the financial resources to pay such dividends.

The amount of common stock we repurchase may decrease from historical levels, or we may not repurchase any shares of common stock.

        Historically, we have repurchased shares of our common stock in varying amounts. Our future repurchases of shares of common stock, if any, and the number of shares of common stock we may repurchase will depend upon our financial condition, results of operations, loan covenants and other factors deemed relevant by our Board of Directors. There can be no assurance that we will continue our practice of repurchasing shares of common stock or that we will have the financial resources to repurchase shares of common stock in the future.

Provisions of our charter documents and code-share agreements may limit the ability or desire of others to gain control of our company.

        Our ability to issue shares of preferred and common stock without shareholder approval may have the effect of delaying or preventing a change in control and may adversely affect the voting and other rights of the holders of our common stock, even in circumstances where such a change in control would be viewed as desirable by most investors. The provisions of the Utah Control Shares Acquisitions Act may also discourage the acquisition of a significant interest in or control of our company. Additionally,

31

our code-share agreements contain termination and extension trigger provisions related to change in control type transactions that may have the effect of deterring a change in control of our company.

ITEM 1B.    UNRESOLVED STAFF COMMENTS

        None

ITEM 2.    PROPERTIES

Flight Equipment

        As of December 31, 2013, our fleet consisted of the following types of owned and leased aircraft:

Aircraft Type	Number of Owned Aircraft		Number of Leased Aircraft		Passenger Capacity		Scheduled Flight Range (miles)		Average Cruising Speed (mph)		Average Age (years)
CRJ200s		87		173		50		1,500		530		12.1
CRJ700s		69		68		70		1,600		530		8.6
CRJ900s		11		53		90		1,500		530		6.1
ERJ145s		—		242		50		1,500		530		12.0
ERJ135s		—		9		37		1,500		530		12.6
Brasilia Turboprops		20		25		30		300		300		16.5

        The following table outlines the currently anticipated size and composition of our combined fleet for the periods indicated. The projected fleet size schedule below assumes aircraft financed under operating leases will be returned to the lessor at the end of each lease and debt-financed aircraft will be retired or sold as the debt matures.

	As of December 31,
	2014		2015		2016		2017
Additional aircraft deliveries
E175		25		15		—		—

	As of December 31,
	2014		2015		2016		2017
Anticipated fleet size
Total Bombardier Regional Jets		407		385		348		305
Total Embraer Regional Jets		241		197		197		179
Total Brasilia Turboprops		26		23		12		11
Total Combined Fleet		674		605		557		495

Bombardier and Embraer Regional Jets

        The Bombardier and Embraer Regional Jets are among the quietest commercial jets currently available and offer many of the amenities of larger commercial jet aircraft, including flight attendant service, as well as a stand-up cabin, overhead and under seat storage, lavatories and in-flight snack and beverage service. The speed of Bombardier and Embraer Regional Jets is comparable to larger aircraft operated by the major airlines, and they have a range of approximately 1,600 miles; however, because of their smaller size and efficient design, the per-flight cost of operating a Bombardier or Embraer Regional Jet is generally less than that of a 120-seat or larger jet aircraft.

32

Brasilia Turboprops

        The Brasilia turboprops are 30-seat, pressurized aircraft designed to operate more economically over short-haul routes than larger jet aircraft. These factors make it economically feasible for SkyWest Airlines to provide high frequency service in markets with relatively low volumes of passenger traffic. Passenger comfort features of the Brasilia turboprops include stand-up headroom, a lavatory, overhead baggage compartments and flight attendant service. We expect that Delta and United will want us to continue to operate Brasilia turboprops in markets where passenger load and other factors make the operation of a regional jet impractical. As of December 31, 2013, SkyWest Airlines operated 45 Brasilia turboprops out of Los Angeles, San Francisco, Salt Lake City, Seattle/Tacoma and Portland. SkyWest Airlines' Brasilia turboprops are generally used in its California markets, which are characterized by high frequency service on shorter stage lengths.

Ground Facilities

        SkyWest, SkyWest Airlines and ExpressJet own or lease the following principal properties:

SkyWest Facilities

•

We own the corporate headquarters facilities of SkyWest and SkyWest Airlines, located in St. George, Utah, which consist of two adjacent buildings of 63,000 and 55,000 square feet, respectively.

SkyWest Airlines Facilities

•

SkyWest Airlines owns a 56,600 square foot aircraft maintenance facility in Palm Springs, California.

•

SkyWest Airlines leases a 131,300 square foot facility at the Salt Lake International Airport. This facility consists of a 58,400 square-foot aircraft maintenance hangar and a 72,900 square-foot training and office facility. In January 2002, SkyWest Airlines entered into a sale lease-back agreement with the Salt lake City Department of Airports. SkyWest Airlines is leasing the facility under an operating lease arrangement over a 26-year term.

•

SkyWest Airlines leases a 90,000 square foot aircraft maintenance and training facility at the Salt Lake City International Airport. The Salt Lake City facility consists of 40,000 square feet of maintenance facilities and 50,000 square feet of training and other facilities. We originally constructed the Salt Lake City facility and subsequently sold it to and leased it back from the Salt Lake City Airport Authority. SkyWest Airlines is leasing the facility under an operating lease arrangement over a 36-year term.

•

SkyWest Airlines owns a 55,000 square-foot maintenance accessory shop and a 5,000 square-foot office facility in Salt Lake City, Utah.

•

SkyWest Airlines leases a 90,000 square-foot maintenance hangar and a 15,000 square-foot office facility in Fresno, California.

•

SkyWest Airlines leases a 70,000 square-foot maintenance hangar in Tucson, Arizona.

•

SkyWest Airlines leases a 70,000 square-foot hangar and office facility in Milwaukee, Wisconsin.

•

SkyWest Airlines leases a 28,000 square-foot hangar and office facility in Nashville, Tennessee.

•

SkyWest Airlines owns a 57,000 square-foot maintenance facility and a 28,000 square-foot office facility in Chicago, Illinois.

33

•

SkyWest Airlines owns a 55,000 square-foot hangar and a 46,000 square-foot office facility in Colorado Springs, Colorado.

•

SkyWest Airlines leases a 42,000 square-foot maintenance hangar facility in South Bend, Indiana.

ExpressJet Facilities

•

ExpressJet leases an aircraft hangar complex consisting of 203,000 square feet of building space. The complex also contains a 15,000 square-foot ground service equipment facility. The 203,000 square-foot building space consists of a 114,000 square foot aircraft maintenance hangar, 18,000 square-foot training facility, and 71,000 square feet of renovated office space which is utilized to support various operating divisions and ExpressJet's Operational Control Center. The lease agreement for the aircraft hangar complex has a 25-year term and is scheduled to expire on April 30, 2033.

•

ExpressJet leases a 20,000 square-foot facility at the Hartsfield-Jackson Atlanta International Airport which serves as ExpressJet's corporate headquarters. The lease agreement for this facility has a seven-year term and is scheduled to expire on July 31, 2018.

•

ExpressJet leases a group of warehouse units for the purpose of parts storage in College Park, Georgia. The 14,000 square feet of warehouse space is leased on a month-to-month basis.

•

ExpressJet leases an aircraft hangar complex located at the Middle Georgia Regional Airport. The complex includes a 77,000 square-foot aircraft hangar facility and 41,000 square feet of training and office space. The lease agreement has a sixteen-year term and is scheduled to expire on April 1, 2018. ExpressJet has subleased the hangar complex to an unrelated aircraft maintenance provider; however ExpressJet remains obligated for payment and other obligations of the lease under the lease agreement.

•

ExpressJet leases an aircraft hangar complex located at the Baton Rouge Metropolitan Airport District. The complex includes a 27,000 square-foot hangar facility and 12,000 square feet of office support space. ExpressJet has the right to occupy the Baton Rouge facility rent-free until 2022.

•

ExpressJet leases a 35,000 square-foot hangar facility in Columbia, South Carolina. The lease agreement has a five-year term and is scheduled to expire on June 30, 2015.

•

ExpressJet leases 34 gates and other premises of the Central Passenger Terminal Complex located on Concourse C and Concourse D at Hartsfield-Jackson Atlanta International Airport. The lease agreement is scheduled to expire on September, 20, 2017.

•

ExpressJet leases a 91,000 square-foot aircraft maintenance facility in Cleveland, Ohio. The lease agreement is scheduled to expire on January 30, 2015.

•

ExpressJet leases a 64,000 square-foot aircraft maintenance facility in Richmond, Virginia. The lease agreement is scheduled to expire on January 30, 2014.

•

ExpressJet leases a 152,000 square-foot hangar, and a 29,000 square-foot shop facility in Shreveport, Louisiana. The lease agreement for the hangar facility and the lease for the shop facility are on a month-to-month basis.

•

ExpressJet leases a 83,000 square-foot hangar, and a 25,000 square-foot shop facility in Knoxville, Tennessee. The lease agreement for the hangar facility is scheduled to expire on November 30, 2020, and the lease for the shop facility is on a month-to-month basis.

•

ExpressJet leases a 380,000 square-foot hangar and office support space in Houston, Texas. The lease agreement is scheduled to expire on December 31, 2015.

34

•

ExpressJet leases a 68,000 square-foot facility in Houston, Texas. ExpressJet has subleased the building to an unrelated aircraft maintenance provider; however ExpressJet remains obligated for payment and other obligations of the lease under the lease agreement which is scheduled to expire on October 2, 2016.

•

ExpressJet leases a 57,000 square-foot training center and support space in Houston, Texas. The lease agreement is scheduled to expire on December 31, 2027.

•

ExpressJet owns three buildings in Saltillo, Mexico consisting of approximately 96,000 square feet of hangar space and 3,000 square feet of administrative space. These buildings are leased to Saltillo Jet Center S. de R.L. de C.V., a subsidiary of ExpressJet, for use in its aircraft painting business.

•

ExpressJet leases a 27,225 square-foot aircraft maintenance hangar in Kansas City, Missouri. The lease agreement is scheduled to expire on November 30, 2016.

Our management deems the current facilities of SkyWest, SkyWest Airlines and ExpressJet as being suitable to support existing operations and believes these facilities will be adequate for the foreseeable future.

ITEM 3.    LEGAL PROCEEDINGS

        We are subject to certain legal actions which we consider routine to our business activities. As of December 31, 2013, our management believed, after consultation with legal counsel, that the ultimate outcome of such legal matters was not likely to have a material adverse effect on our financial position, liquidity or results of operations. However, the following is a significant outstanding legal matter, which if not resolved consistent with the position we have taken in such matters, would negatively impact our financial results.

SkyWest Airlines and ExpressJet v. Delta

        During the quarter ended December 31, 2007, Delta notified SkyWest, SkyWest Airlines and Atlantic Southeast (now ExpressJet) of a dispute under the Delta Connection Agreements executed by Delta with SkyWest Airlines and Atlantic Southeast. The dispute relates to the allocation of liability for certain irregular operation ("IROP") expenses paid by SkyWest Airlines and Atlantic Southeast (now ExpressJet) to their passengers and vendors under certain situations. During the period between the execution of the Delta Connection Agreements in September 2005 and December 2007, SkyWest Airlines and Atlantic Southeast passed through to Delta IROP expenses that were paid pursuant to Delta's policies, and Delta accepted and reimbursed those expenses. Delta now claims it is obligated to reimburse only a fraction of the IROP expenses. As a result, Delta withheld a combined total of approximately $25 million (pre-tax) from one of the weekly scheduled wire payments to SkyWest Airlines and Atlantic Southeast during December 2007. Since December 2007, Delta has continued to withhold payments from the weekly scheduled wire payments to SkyWest Airlines and Atlantic Southeast (now ExpressJet), and has disputed subsequent billings for IROP expenses. On February 1, 2008, SkyWest Airlines and Atlantic Southeast filed a Complaint in the Superior Court for Fulton County, Georgia ("Superior Court") challenging Delta's treatment of the matter and seeking recovery of the payments withheld by Delta and any future withholdings related to this issue. Delta filed an Answer to the SkyWest Airlines and Atlantic Southeast Complaint and a Counterclaim against SkyWest Airlines and Atlantic Southeast on March 24, 2008. Delta's Counterclaim alleged that SkyWest Airlines and Atlantic Southeast breached the Delta Connection Agreements by invoicing Delta for IROP expenses that were paid pursuant to Delta's policies, and claims only a portion of those expenses may be invoiced to Delta. Since July 1, 2008, we have not recognized revenue related to IROP expense reimbursements withheld by Delta because collection of those reimbursements is the subject of

35

litigation and is not reasonably assured. As of December 31, 2013, we had recognized a cumulative total of $31.7 million of revenue associated with the funds withheld by Delta.

        After proceedings that included contested motions, document discovery, and depositions, Delta voluntarily dismissed its Counterclaim. Discovery in that action was not complete at the time of dismissal. On February 14, 2011, SkyWest Airlines and Atlantic Southeast voluntarily dismissed their claims in the Superior Court, and filed a new complaint (the "State Court Complaint") in the Georgia State Court of Fulton County (the "State Court"). The claims continue to include breach of contract, breach of contract based on mutual departure, breach of contract based on voluntary payment, and breach of the duty of good faith and fair dealing. Delta moved for partial dismissal of the State Court Complaint, which motion was denied in its entirety.

        Discovery in the State Court lawsuit has concluded. On July 19, 2013, the parties filed cross motions for partial summary judgment. SkyWest Airlines and ExpressJet filed a motion for partial summary judgment on their claim for voluntary payment. Delta filed a motion for partial summary judgment on all of SkyWest's and ExpressJet's claims, for partial summary judgment on the issue of damages, and for spoliation sanctions. Briefing of the cross motions is complete, but no hearing has been scheduled by the Court. SkyWest and ExpressJet intend to oppose Delta's motions and continue to vigorously pursue their claims set forth in the State Court Complaint.

        As of December 31, 2013, our estimated range of reasonably possible loss related to the dispute was $0 to $25.8 million.

ITEM 4.    MINE SAFETY DISCLOSURES

        The disclosure required by this item is not applicable.

36

PART II

ITEM 5.    MARKET FOR REGISTRANT'S COMMON EQUITY, RELATED STOCKHOLDER MATTERS AND ISSUER PURCHASES OF EQUITY SECURITIES

Market Price for Our Common Stock

        Our common stock is traded on The Nasdaq Global Select Market under the symbol "SKYW." At February 3, 2014, there were approximately 888 stockholders of record of our common stock. Securities held of record do not include shares held in securities position listings. The following table sets forth the range of high and low closing sales prices for our common stock, during the periods indicated.

	2013				2012
Quarter	High		Low		High		Low
First		16.10		12.32		14.05		10.81
Second		16.11		13.19		11.04		6.36
Third		15.54		12.39		10.87		6.31
Fourth		17.05		13.57		12.94		10.36

        The transfer agent for our common stock is Zions First National Bank, Salt Lake City, Utah.

Dividends

        During 2013 and 2012, our Board of Directors declared regular quarterly dividends of $0.04 per share.

Securities Authorized for Issuance Under Equity Compensation Plans

        The following table contains information regarding our equity compensation plans as of December 31, 2013.

Plan Category	Number of Securities to be Issued upon Exercise of Outstanding Options, Warrants and Rights		Weighted-Average Exercise Price of Outstanding Options, Warrants and Rights		Number of Securities Remaining Available for Future Issuance under Equity Compensation Plans (Excluding Securities Reflected in the First Column)
Equity compensation plans approved by security holders(1)		3,407,575	$	17.99		5,474,439

(1)

Consists of our Executive Stock Incentive Plan, our All Share Stock Option Plan, our SkyWest Inc. Long Term Incentive Plan, and our Employee Stock Purchase Plan. See Note 9 to our Consolidated Financial Statements for the fiscal year ended December 31, 2013, included in Item 8 of this Report, for additional information regarding these plans.

37

Stock Performance Graph

The following Performance Graph and related information shall not be deemed "soliciting material" or "filed" with the Securities and Exchange Commission,(the "Commission"), nor shall such information be incorporated by reference into any future filing under the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended (the "Exchange Act"), except to the extent we specifically incorporate it by reference into such filing.

        The following graph compares the cumulative total shareholder return on our common stock over the five-year period ended December 31, 2013, with the cumulative total return during such period of the Nasdaq Stock Market (U.S. Companies) and a peer group index composed of regional and major passenger airlines with U.S operations that have equity securities traded on the Nasdaq Stock Market or the New York Stock Exchange, the members of which are identified below (the "Peer Group") for the same period. The following graph assumes an initial investment of $100.00 with dividends reinvested. The stock performance shown on the graph below represents historical stock performance and is not necessarily indicative of future stock price performance.

Comparison of Cumulative Five Year Total Return

	INDEXED RETURNS
			Years Ending
	Base Period Dec08
Company Name / Index			Dec09		Dec10		Dec11		Dec12		Dec13
SkyWest, Inc.		100		92.06		85.96		70.10		70.33		84.66
NASDAQ Composite		100		145.32		171.50		170.08		199.76		279.90
Peer Group		100		102.75		124.45		87.57		115.00		214.05

        The Peer Group consists of regional and major passenger airlines with U.S operations that have equity securities traded on the Nasdaq Stock Market or the New York Stock Exchange. The members of the Peer Group are: Alaska Air Group, Inc.: Allegiant Travel Co.; American Airlines Group, Inc.; Delta Air Lines, Inc.; Hawaiian Holdings, Inc.; JetBlue Airways, Corp.; Republic Airways, Holdings Inc.; SkyWest, Inc. Southwest Airlines, Spirit Airlines Inc.; United Continental Holdings, Inc.; and US Airways Group, Inc.

38

ITEM 6.    SELECTED FINANCIAL DATA

        The following selected financial and operating data should be read in conjunction with "Management's Discussion and Analysis of Financial Condition and Results of Operations," and our consolidated financial statements and related notes included elsewhere in this Report.

Selected Consolidated Financial Data (amounts in thousands, except per share data):

	Year Ended December 31,
	2013			2012			2011			2010(2)			2009
Operating revenues	$	3,297,725		$	3,534,372		$	3,654,923		$	2,765,145		$	2,613,614
Operating income		153,111			165,987			41,105			201,826			212,195
Net income (loss)		58,956			51,157			(27,335	)		96,350			83,658
Net income (loss) per common share:
Basic	$	1.14		$	1.00		$	(0.52	)	$	1.73		$	1.50
Diluted	$	1.12		$	0.99		$	(0.52	)	$	1.70			1.47
Weighted average shares:
Basic		51,688			51,090			52,201			55,610			55,854
Diluted		52,422			51,746			52,201			56,526			56,814
Total assets		4,233,219			4,254,637		$	4,281,908		$	4,456,148		$	4,310,802
Current assets		1,464,437			1,434,040			1,280,464			1,379,203			1,254,099
Current liabilities		620,464			591,425			624,148			572,278			449,835
Long-term debt, net of current maturities		1,293,179			1,470,567			1,606,993			1,738,936			1,816,318
Stockholders' equity		1,434,939			1,387,175			1,334,261			1,420,923			1,352,219
Return (loss) on average equity(1)		4.2	%		3.8	%		(2.0	)%		6.9	%		6.4	%
Cash dividends declared per common share	$	0.16		$	0.16		$	0.16		$	0.16		$	0.16

(1)

Calculated by dividing net income (loss) by the average of beginning and ending stockholders' equity for the year.

(2)

On November 12, 2010, we completed the ExpressJet Merger for $136.5 million in cash. Our 2010 consolidated operating revenues contain 50 days of additional revenue and expenses generated subsequent to the ExpressJet Merger.

Selected Operating Data

	Year Ended December 31,
	2013		2012		2011		2010		2009
Block hours		2,380,118		2,297,014		2,250,280		1,547,562		1,363,257
Departures		1,453,601		1,435,512		1,390,523		1,001,766		870,761
Passengers carried		60,581,948		58,803,690		55,836,271		40,411,089		34,544,772
Revenue passenger miles (000)		31,834,735		30,088,278		29,109,039		20,227,220		17,448,958
Available seat miles (000)		39,207,910		37,278,554		36,698,859		25,503,845		22,142,650
Revenue per available seat mile		8.4¢		9.5¢		10.0¢		10.8¢		11.8¢
Cost per available seat mile		8.2¢		9.2¢		10.1¢		10.4¢		11.2¢
Average passenger trip length		525		512		521		501		505
Number of operating aircraft at end of year		755		738		732		704		449

39

        The following terms used in this section and elsewhere in this Report have the meanings indicated below:

        "Revenue passenger miles" represents the number of miles flown by revenue passengers.

        "Available seat miles" represents the number of seats available for passengers multiplied by the number of miles those seats are flown.

        "Revenue per available seat mile" represents passenger revenue divided by available seat miles.

        "Cost per available seat mile" represents operating expenses plus interest divided by available seat miles.

        "Number of operating aircraft at end of year" excludes aircraft leased to un-affiliated and affiliated entities.

ITEM 7.    MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

The following discussion and analysis presents factors that had a material effect on our results of operations during the years ended December 31, 2013, 2012 and 2011. Also discussed is our financial position as of December 31, 2013 and 2012. You should read this discussion in conjunction with our consolidated financial statements, including the notes thereto, appearing elsewhere in this Report or incorporated herein by reference. This discussion and analysis contains forward-looking statements. Please refer to the sections of this Report entitled "Cautionary Statement Concerning Forward-looking Statements" and "Item 1A. Risk Factors" for discussion of some of the uncertainties, risks and assumptions associated with these statements.

Overview

        Through SkyWest Airlines and ExpressJet, we operate the largest regional airline in the United States. As of December 31, 2013, SkyWest Airlines and ExpressJet offered scheduled passenger and air freight service with approximately 4,000 total daily departures to destinations in the United States, Canada, Mexico and the Caribbean. As of December 31, 2013, we had a combined fleet of 757 aircraft consisting of the following:

	CRJ200		ERJ145		ERJ135		CRJ700		CRJ900		EMB120		Total
United		92		242		9		70		—		36		449
Delta		125		—		—		60		60		9		254
American		23		—		—		—		—		—		23
US Airways		11		—		—		—		4		—		15
Alaska		—		—		—		7		—		—		7
Subleased to an un-affiliated entity		2		—		—		—		—		—		2
Unassigned		7		—		—		—		—		—		7
Total		260		242		9		137		64		45		757

        For the year ended December 31, 2013, approximately 60.9% of our aggregate capacity was operated for United, approximately 33.6% was operated for Delta, approximately 1.3% was operated for Alaska, approximately 1.6% was operated for US Airways and approximately 2.6% was operated for American.

        Under a fixed-fee flying arrangement, the major airline generally pays the regional airline a fixed fee for each departure, with additional incentives based on completion of flights, on-time performance and baggage handling performance. In addition, the major airline and regional airline often enter into an arrangement pursuant to which the major airline bears the risk of changes in the price of fuel and

40

other such costs that are passed through to the major airline partner. Regional airlines benefit from a fixed-fee arrangement because they are sheltered from many of the elements that could cause volatility in airline financial performance, including variations in ticket prices, passenger loads and fuel prices. However, regional airlines in fixed-fee arrangements do not benefit from positive trends in ticket prices, passenger loads or fuel prices and, because the major airline absorbs many of the costs associated with the regional airline flight, the margin between the fixed fees for a flight and the expected per-flight costs tends to be smaller than the margins associated with revenue-sharing arrangements.

        Under our fixed-fee arrangements, three compensation components have a significant impact on comparability of revenue and operating expense for the periods presented in this Report. One item is the reimbursement of fuel expense, which is a directly-reimbursed expense under all of our fixed-fee arrangements. If we purchase fuel directly from vendors, our major partners reimburse us for fuel expense incurred under each respective fixed-fee contract, and we record such reimbursement as passenger revenue. Thus, the price volatility of fuel and the volume of fuel expensed under our fixed-fee arrangements during a particular period will impact our fuel expense and our passenger revenue during the period equally, with no impact on our operating income. Over the past few years, some of our major airline partners have purchased an increased volume of fuel directly from vendors on flights we operated under our flying contracts, which also impacts the comparability of revenue and operating expense for the periods presented in this Report.

        The second item is the reimbursement of landing fees and station rents, which is a directly-reimbursed expense under all of our fixed-fee arrangements. Our major partners reimburse us for landing fees and station rent expense incurred under each respective fixed-fee contract, and we record such reimbursement as passenger revenue. Over the past few years, some of our major airline partners have paid an increased volume of landing fees and station rents directly to our vendors on flights we operated under our flying contracts, which also impacts the comparability of revenue and operating expense for the periods presented in this Report.

        The third item is the compensation we receive for engine maintenance under our fixed-fee arrangements. Under our United, American, US Airways and Alaska flying contracts, a portion of our compensation is based upon fixed hourly rates the aircraft is in operation, which is intended to compensate us for engine maintenance costs ("Fixed-Rate Engine Contracts"). Under the compensation structure for our Delta Connection and United CPA flying contracts, our major partner reimburses us for engine maintenance expense when the expense is incurred ("Directly-Reimbursed Engine Contracts"). We use the direct-expense method of accounting for our CRJ200 regional jet aircraft engine overhaul costs and, accordingly, we recognize engine maintenance expense on our CRJ200 engines on an as-incurred basis. Under the direct-expense method, the maintenance liability is recorded when the maintenance services are performed ("CRJ200 Engine Overhaul Expense").

        Because we use the direct-expense method of accounting for our CRJ200 engine expense, and because we recognize revenue using the applicable fixed hourly rates under our Fixed-Rate Engine Contracts, the number of engine maintenance events and related expense we incur each reporting period under the Fixed-Rate Engine Contracts has a direct impact on the comparability of our operating income for the presented reporting periods.

        Because we recognize revenue at the same amount and in the same period when we incur engine maintenance expense on engines operating under our Directly-Reimbursed Engine Contracts, the number of engine events and related expense we incur each reporting period does not have a direct impact on the comparability of our operating income for the presented reporting periods.

41

        We have an agreement with a third-party vendor to provide long-term engine maintenance covering scheduled and unscheduled repairs for engines on our CRJ700s operating under our Fixed-Rate Engine Contracts (a "Power by the Hour Agreement"). Under the terms of the Power by the Hour Agreement, we are obligated to pay a set dollar amount per engine hour flown on a monthly basis and the vendor assumes the obligation to repair the engines at no additional cost to us, subject to certain specified exclusions. Thus, under the Power by the Hour Agreement, we expense the engine maintenance costs as flight hours are incurred on the engines and using the contractual rate set forth in the agreement. Because we record engine maintenance expense based on the fixed hourly rate pursuant to the Power by the Hour Agreement on our CRJ700s operating under our Fixed-Rate Engine Contracts, and because we recognize revenue using the applicable fixed hourly rates under our Fixed-Rate Engine Contracts, the number of engine events and related expense we incur each reporting period does not have a direct impact on the comparability of our operating income for the presented reporting periods. The table below summarizes how we are compensated by our major partners under our flying contracts for engine expense and the method we use to recognize the corresponding expense.

Flying Contract	Compensation of Engine Expense	Expense Recognition
SkyWest Delta Connection	Directly-Reimbursed Engine Contracts	Direct Expense Method
ExpressJet Delta Connection	Directly-Reimbursed Engine Contracts	Direct Expense Method
SkyWest United Express (CRJ200)	Fixed-Rate Engine Contracts	Direct Expense Method
SkyWest United Express (CRJ700)	Fixed-Rate Engine Contracts	Power by the Hour Agreement
SkyWest United Express (EMB120)	Fixed-Rate Engine Contracts	Deferral Method
ExpressJet United Express (CRJ200)	Fixed-Rate Engine Contracts	Direct Expense Method
ExpressJet United Express (ERJ145)	Fixed-Rate Engine Contracts	Power by the Hour Agreement
ExpressJet United CPA	Directly-Reimbursed Engine Contracts	Power by the Hour Agreement
Alaska Agreement	Fixed-Rate Engine Contracts	Power by the Hour Agreement
American Eagle Agreement (CRJ200)	Fixed-Rate Engine Contracts	Direct Expense Method
US Airways Express (CRJ200 / CRJ900)	Fixed-Rate Engine Contracts	Direct Expense Method

        Historically, multiple contractual relationships with major airlines have enabled us to reduce our reliance on any single major airline code and to enhance and stabilize operating results through a mix of contract flying and our controlled or "pro-rate" flying. For the year ended December 31, 2013, contract flying revenue and pro-rate revenue represented approximately 90% and 10%, respectively, of our total passenger revenues. On contract routes, the major airline partner controls scheduling, ticketing, pricing and seat inventories and we are compensated by the major airline partner at contracted rates based on completed block hours, flight departures and other operating measures.

Financial Highlights

        We had total operating revenues of $3.3 billion for the year ended December 31, 2013, a 6.7% decrease, compared to total operating revenues of $3.5 billion for the year ended December 31, 2012. We had a net income of $59.0 million, or $1.12 per diluted share, for the year ended December 31, 2013, compared $51.2 million or $0.99 per diluted share, for the year ended December 31, 2012.

42

        The significant items affecting our financial performance during the year ended December 31, 2013 are outlined below:

Revenue

        Under certain of our flying contracts, certain expenses are subject to direct reimbursement from our major partners and we record such reimbursements as passenger revenue. These reimbursed expenses include fuel, landing fees, station rents and certain engine maintenance expenses. Our fuel expense, landing fees, station rents and directly-reimbursed engine expense decreased by $331.0 million, during the year ended December 31, 2013, from the year ended December 31, 2012, due primarily to (i) our major partners purchasing an increased volume of fuel, landing fees and station rents directly from vendors on flights we operated under our code-share agreements and (ii) a reduction in the number of engine maintenance events. Excluding the impact of the decrease in direct fuel, landing fees, station rents and engine maintenance expense and associated reimbursements from our major partners, our passenger revenues increased $102.9 million for the year ended December 31, 2013, compared to the year ended December 31, 2012, which was primarily due to an increase of approximately 83,000 hours of block-hour production primarily resulting from an increase in the fleet from 744 aircraft at December 31, 2012 to 757 aircraft at December 31, 2013.

Operating Expenses

        Aircraft maintenance, materials and repair expense, excluding engine overhaul reimbursement from our major partners and CRJ200 engine overhauls reimbursed at a fixed hourly rate increased $78.5 million, or 17.6%, during the year ended December 31, 2013, compared to the year ended December 31, 2012. The increase in aircraft maintenance, materials and repair expense, excluding engine overhaul costs, for the year ended December 31, 2013, compared to the year ended December 31, 2012, was primarily due to an increase in the number of scheduled maintenance events and the replacement and repair of aircraft parts and components at ExpressJet and SkyWest Airlines.

        Because we use the direct-expense method of accounting for our CRJ200 engines and because we recognize revenue using the applicable fixed hourly rates under our Fixed-Rate Engine Contracts, the number of engine maintenance events and related expense we incur each reporting period operating under the Fixed-Rate Engine Contracts has a direct impact on the comparability of our operating income for the presented reporting periods. The CRJ200 Engine Overhaul Expense we incurred under the Fixed-Rate Engine Contracts decreased $15.8 million during the year ended December 31, 2013, compared to the year ended December 31, 2012. The decrease in CRJ200 Engine Overhaul Expense was primarily due to a reduction in the number of scheduled engine maintenance events during the year ended December 31, 2013.

        Salaries, wages and employee benefits increased $39.6 million, or 3.4%, during the year ended December 31, 2013, compared to the year ended December 31, 2012. The increase in salaries, wages and employee benefits was primarily due to an increase in crew and mechanic wages attributable to increased departures and block-hour production and due to an increase in health insurance and workers compensation expenses.

Other Items

        Other, net included in Other Income (Expense), increased $21.0 million during the year ended December 31, 2013, compared to the year ended December 31, 2012. The increase was primarily attributable to the termination of our aircraft sub-lease with Air Mekong, and our recognition of $5.1 million of other income primarily due to the maintenance deposits we collected during the year ended December 31, 2013 and sale of our shares of Air Mekong. In conjunction with the sale of the Air Mekong shares, we recognized a gain of $5.0 million. During the year ended December 31, 2012,

43

we incurred other expense primarily consisting of losses from our equity investments in Trip Linhas Aereas, a regional airline operating in Brazil ("Trip") and Mekong Aviation Joint Stock Company, an airline operating in Vietnam ("Air Mekong").

        The items identified above were the principal factors that contributed to the improvement in our financial results during the year ended December 31, 2013, compared to the year ended December 31, 2012.

        During 2012, we reached an agreement with Delta to add 34 additional used dual-class Bombardier regional jet aircraft to our operations in exchange for the early termination of 66 CRJ200 aircraft under our Delta Connection Agreements. The additional dual-class aircraft were previously operated for Delta by other regional carriers. We have agreed to sublease the 34 additional dual-class aircraft from Delta for a nominal amount. The 34 additional aircraft consist of five CRJ700s and 29 CRJ900s. As of September 30, 2013, we had taken delivery of all 34 additional aircraft. We anticipate that all 66 CRJ200 aircraft will be removed from the Delta Connection Agreements by December 31, 2015. Of the 66 CRJ200s scheduled to be removed, 41 CRJ200s are subleased from Delta for a nominal amount, and are scheduled to be returned to Delta without obligation to us.

        On May 16, 2013, SkyWest Airlines and United entered into a United Express Agreement to operate 40 new Embraer E175 dual-class regional jet aircraft. Under the agreement, we anticipate that the 40 aircraft will be introduced into service beginning in the second quarter of 2014, with deliveries continuing to mid-2015. The United Express Agreement has a 12-year term for each of the aircraft subject to the agreement, and other terms which are generally consistent with the SkyWest Airlines United Express Agreement.

        The Airline Safety and Pilot Training Improvement Act of 2009 (the "Improvement Act") was enacted in August of 2010 and became effective August 2013. The Improvement Act adds new certification requirements for entry-level commercial pilots, requires additional emergency training, provides for increased availability of pilot records and mandates stricter rules to minimize pilot fatigue.

        The implementation of the Improvement Act (and associated regulations) will increase our compliance and FAA reporting obligations, have a negative effect on pilot scheduling, work hours or other aspects of our operations, and negatively impact our operations and financial condition. As a consequence of the implementation of the Improvement Act, we anticipate that our crew costs will increase during 2014.

Critical Accounting Policies

        Our significant accounting policies are summarized in Note 1 to our consolidated financial statements for the year ended December 31, 2013, included in Item 8 of this Report. Critical accounting policies are those policies that are most important to the preparation of our consolidated financial statements and require management's subjective and complex judgments due to the need to make estimates about the effect of matters that are inherently uncertain. Our critical accounting policies relate to revenue recognition, aircraft maintenance, aircraft leases, impairment of long-lived assets and intangibles, stock-based compensation expense and fair value as discussed below. The application of these accounting policies involves the exercise of judgment and the use of assumptions as to future uncertainties and, as a result, actual results will differ, and could differ materially from such estimates.

Revenue Recognition

        Passenger and ground handling revenues are recognized when service is provided. Under our contract and pro-rate flying agreements with our code-share partners, revenue is considered earned when the flight is completed. Our agreements with our code-share partners contain certain provisions

44

pursuant to which the parties could terminate the respective agreement, subject to certain rights of the other party, if certain performance criteria are not maintained. Our revenues could be impacted by a number of factors, including changes to the applicable code-share agreements, contract modifications resulting from contract renegotiations and our ability to earn incentive payments contemplated under applicable agreements. In the event contracted rates are not finalized at a quarterly or annual financial statement date, we record that period's revenues based on the lower of the prior period's approved rates adjusted for the current contract negotiations and our estimate of rates that will be implemented. Also, in the event we have a reimbursement dispute with a major partner at a quarterly or annual financial statement date, we evaluate the dispute under established revenue recognition criteria and, provided the revenue recognition criteria have been met, we recognize revenue for that period based on our estimate of the resolution of the dispute. Accordingly, we are required to exercise judgment and use assumptions in the application of our revenue recognition policy.

Maintenance

        We use the direct-expense method of accounting for our regional jet aircraft engine overhaul costs. Under this method, the maintenance liability is not recorded until the maintenance services are performed. We use the "deferral method" of accounting for our Brasilia turboprop engine overhauls, which provides for engine overhaul costs to be capitalized and depreciated to the next estimated overhaul event or to the remaining useful life, whichever is shorter. For leased aircraft, we are subject to lease return provisions that require a minimum portion of the "life" of an overhaul be remaining on the engine at the lease return date. With respect to engine overhauls related to leased Brasilia turboprops to be returned, we adjust the estimated useful lives of the final engine overhauls so they do not exceed the respective lease return dates. With respect to SkyWest Airlines, a third-party vendor provides our long-term engine services covering the scheduled and unscheduled repairs for engines on our CRJ700s operated under our Fixed-Rate Engine Contracts. Under the terms of the vendor agreement, we pay a set dollar amount per engine hour flown on a monthly basis and the third-party vendor assumes the obligation to repair the engines at no additional cost to us, subject to certain specified exclusions. Thus, under the third-party vendor agreement, we expense the engine maintenance costs as flight hours are incurred on the engines and using the contractual rate set forth in the agreement.

Aircraft Leases

        The majority of SkyWest Airlines' aircraft are leased from third parties, while ExpressJet's aircraft flying for Delta are primarily debt-financed on a long-term basis, and the majority of ExpressJet's aircraft flying for United are leased from United for a nominal amount. In order to determine the proper classification of our leased aircraft as either operating leases or capital leases, we must make certain estimates at the inception of the lease relating to the economic useful life and the fair value of an asset as well as select an appropriate discount rate to be used in discounting future lease payments. These estimates are utilized by management in making computations as required by existing accounting standards that determine whether the lease is classified as an operating lease or a capital lease. All of our aircraft leases have been classified as operating leases, which results in rental payments being charged to expense over the terms of the related leases. Additionally, operating leases are not reflected in our consolidated balance sheet and accordingly, neither a lease asset nor an obligation for future lease payments is reflected in our consolidated balance sheets.

Impairment of Long-Lived Assets

        As of December 31, 2013, we had approximately $2.7 billion of property and equipment and related assets. Additionally, as of December 31, 2013, we had approximately $15.0 million in intangible assets. In accounting for these long-lived and intangible assets, we make estimates about the expected

45

useful lives of the assets, the expected residual values of certain of these assets, and the potential for impairment based on the fair value of the assets and the cash flows they generate. We recorded an intangible of approximately $33.7 million relating to the acquisition of Atlantic Southeast in September 2005. The intangible is being amortized over fifteen years under the straight-line method. As of December 31, 2013, we had recorded $18.7 million in accumulated amortization expense. Factors indicating potential impairment include, but are not limited to, significant decreases in the market value of the long-lived assets, a significant change in the condition of the long-lived assets and operating cash flow losses associated with the use of the long-lived assets.

        When considering whether or not impairment of long-lived assets exists, we group similar assets together at the lowest level for which identifiable cash flows are largely independent of the cash flows of other assets and liabilities and compare the undiscounted cash flows for each asset group to the net carrying amount of the assets supporting the asset group. Asset groupings are done at the fleet or contract level. Based on the results of the evaluations performed as of December 31, 2013, our management concluded no impairment of long-lived assets was necessary as of December 31, 2013.

Stock-Based Compensation Expense

        We estimate the fair value of stock options as of the grant date using the Black-Scholes option pricing model. We use historical data to estimate option exercises and employee termination in the option pricing model. The expected term of options granted is derived from the output of the option pricing model and represents the period of time that options granted are expected to be outstanding. The expected volatilities are based on the historical volatility of our common stock and other factors.

Fair value

        We hold certain assets that are required to be measured at fair value in accordance with United States GAAP. We determined fair value of these assets based on the following three levels of inputs:

Level 1—	Quoted prices in active markets for identical assets or liabilities.
Level 2—	Observable inputs other than Level 1 prices such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities. Some of our marketable securities primarily utilize broker quotes in a non-active market for valuation of these securities.
Level 3—	Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities, therefore requiring an entity to develop its own assumptions.

        We utilize several valuation techniques in order to assess the fair value of our financial assets and liabilities. Our cash and cash equivalents primarily utilize quoted prices in active markets for identical assets or liabilities.

        We have valued non-auction rate marketable securities using quoted prices in active markets for identical assets or liabilities. If a quoted price is not available, we utilize broker quotes in a non-active market for valuation of these securities. For auction-rate security instruments, quoted prices in active markets are no longer available. As a result, we have estimated the fair values of these securities utilizing a discounted cash flow model.

46

Results of Operations

2013 Compared to 2012

Our Business Segments

        For the year ended December 31, 2013, we had two reportable segments which are the basis of our internal financial reporting: SkyWest Airlines and ExpressJet. The following table sets forth our segment data for the years ended December 31, 2013 and 2012 (in thousands):

	2013			2012			$ Change			% Change
	Amount			Amount			Amount			Percent
Operating Revenues:
SkyWest Airlines operating revenue	$	1,827,568		$	1,930,149		$	(102,581	)		(5.3	)%
ExpressJet operating revenues		1,466,341			1,593,527			(127,186	)		(8.0	)%
Other operating revenues		3,816			10,696			(6,880	)		(64.3	)%
Total Operating Revenues	$	3,297,725		$	3,534,372		$	(236,647	)		(6.7	)%
Airline Expenses:
SkyWest airlines expense	$	1,688,049		$	1,824,084		$	(136,035	)		(7.5	)%
ExpressJet airlines expense		1,515,336			1,611,982			(96,646	)		(6.0	)%
Other airline expense		9,887			9,699			188			1.9	%
Total Airline Expense(1)		3,213,272		$	3,445,765		$	(232,493	)		(6.7	)%
Segment profit (loss):
SkyWest Airlines segment profit	$	139,519		$	106,065		$	33,454			31.5	%
ExpressJet segment loss		(48,995	)		(18,455	)		(30,540	)		(165.5	)%
Other profit (Loss)		(6,071	)		997			(7,068	)		NM
Total Segment Profit	$	84,453		$	88,607		$	(4,154	)		(4.7	)%
Interest Income		3,689			7,928			(4,239	)		(53.5	)%
Other		10,390			(10,639	)		21,029			NM
Consolidated Income Before Taxes		98,532		$	85,896		$	12,636			14.7	%

(1)

Total Airline Expense includes operating expense and interest expense

        SkyWest Airlines Segment Profit.    SkyWest Airlines segment profit increased $33.5 million, or 31.5%, during the year ended December 31, 2013, compared to the year ended December 31, 2012. The increase in the SkyWest Airlines' segment profit was due primarily to the following factors:

•

CRJ200 engine overhaul expense incurred under the SkyWest Airlines Fixed-Rate Engine Contracts decreased $18.1 million, or 37.6%, during the year ended December 31, 2013, compared to the year ended December 31, 2012. The decrease in CRJ200 engine overhaul expense was primarily due to a reduction in the number of scheduled engine maintenance events.

•

SkyWest Airlines' non-pass-through operating revenue increased by $65.9 million, or 4.6%, during the year ended December 31, 2013, compared to the year ended December 31, 2012. The increase in non-pass through operating revenue, was primarily due to an increase in block hour production and our receipt of higher incentive payments from SkyWest Airlines' major airline partners.

•

SkyWest Airlines' salaries, wages and employee benefits increased $20.3 million, or 3.7%, during the year ended December 31, 2013, compared to the year ended December 31, 2012, primarily due to increased block-hour production.

47

•

SkyWest Airlines' legal expense increased by $2.8 million. The increase in legal expense was primarily related to the settlement of our dispute with Delta regarding non-revenue positive space flying by employees of SkyWest Airlines and ExpressJet.

•

SkyWest Airlines' aircraft maintenance expense, excluding reimbursed engine overhauls increased by $26.7 million, or 12.5%, during the year ended December 31, 2013, compared to the year ended December 31, 2012, which was primarily attributable to an increase in scheduled maintenance events and the replacement and repair of aircraft parts and components.

•

SkyWest Airlines' ground handling service expense increased $9.3 million, or 12.6%, during the year ended December 31, 2013, compared to the year ended December 31, 2012. The increase in ground handling service expense was primarily due to SkyWest Airlines outsourcing the customer service and ramp functions of several pro-rate stations.

        ExpressJet Segment Loss.    ExpressJet segment loss increased $30.5 million, or 165.5%, during the year ended December 31, 2013, compared to the year ended December 31, 2012. The increase in ExpressJet segment loss was due primarily to the following factors:

•

ExpressJet's aircraft maintenance expense, excluding reimbursed engine overhauls increased by $45.7 million, or 20.6%, during the year ended December 31, 2013, compared to the year ended December 31, 2012, which was primarily attributable to an increase in scheduled maintenance events and the replacement and repair of aircraft parts and components.

•

ExpressJet's salaries, wages and employee benefits increased $19.4 million, or 3.1%, during the year ended December 31, 2013, compared to the year ended December 31, 2012, primarily due to increased block hour production.

•

ExpressJet's depreciation and amortization expense decreased $8.7 million, or 8.9%, during the year ended December 31, 2013, compared to the year ended December 31, 2012, primarily due to certain rotable assets being fully depreciated during the year ended 2013 and a lower volume of capital expenditures.

•

ExpressJet's non-pass-through operating revenue increased by $25.3 million, or 2.4%, during the year ended December 31, 2013, compared to the year ended December 31, 2012. The increase in non-pass through operating revenue was primarily due to an increase in block hour production offset by a reduction in contract performance incentives.

        Operational Statistics.    The following table sets forth our major operational statistics and the associated percentages-of-change for the periods identified below.

	Year Ended December 31,
	2013			2012			% Change
Revenue passenger miles (000)		31,834,735			30,088,278			5.8	%
Available seat miles ("ASMs") (000)		39,207,910			37,278,554			5.2	%
Block hours		2,380,118			2,297,014			3.6	%
Departures		1,453,601			1,435,512			1.3	%
Passengers carried		60,581,948			58,803,690			3.0	%
Passenger load factor		81.2	%		80.7	%		0.5 pts
Revenue per available seat mile		8.4¢			9.5¢			(11.6	)%
Cost per available seat mile		8.2¢			9.2¢			(10.9	)%
Fuel cost per available seat mile		0.5¢			1.1¢			(54.5	)%
Average passenger trip length (miles)		525			512			2.5	%

48

        Revenues.    Total operating revenues decreased $236.6 million, or 6.7%, during the year ended December 31, 2013, compared to the year ended December 31, 2012. Under certain of our flying contracts, certain expenses are subject to direct reimbursement from our major partners and we record such reimbursements as passenger revenue.These reimbursed expenses include fuel, landing fees, station rents and certain engine maintenance expenses. Our fuel expense, landing fees, station rents and directly-reimbursed engine expense decreased by $331.0 million, during the year ended December 31, 2013, from the year ended December 31, 2012, due primarily (i) to our major partners purchasing an increased volume of fuel, landing fees and station rents directly from vendors on flights we operated under our code-share agreements and (ii) a reduction in the number of engine maintenance events. The following table summarizes the amount of fuel, landing fees, station rents, deice and engine overhaul reimbursements included in our passenger revenues for the periods indicated (dollar amounts in thousands).

	For the year ended December 31,
	2013		2012		$ Change			% Change
Passenger revenues	$	3,239,525	$	3,467,546	$	(228,021	)		(6.6	)%
Less: Fuel reimbursement from major partners		91,925		329,748		(237,823	)		(72.1	)%
Less: Landing fee and station rent reimbursements from major partners		95,175		152,121		(56,946	)		(37.4	)%
Less: Engine overhaul reimbursement from major partners		123,024		159,220		(36,196	)		(22.7	)%
Passenger revenue excluding fuel, landing fee, station rent and engine overhaul reimbursements	$	2,929,401	$	2,826,457	$	102,944			3.6	%

        Passenger revenues.    Passenger revenues decreased $228.0 million, or 6.6%, during year ended December 31, 2013, compared to the year ended December 31, 2012. Our passenger revenues, excluding fuel, landing fee, station rent and engine overhaul reimbursements from major partners, increased $102.9 million, or 3.6%, during the year ended December 31, 2013, compared to the year ended December 31, 2012. The increase in passenger revenues, excluding fuel, landing fee, station rent and engine overhaul reimbursements, was primarily due to an increase in block hours of 3.6% during the year ended December 31, 2013, compared to the year ended December 31, 2012. The increase in block hours was due primarily to an increase in total number of aircraft in operation. Block hour production is a significant revenue driver in our flying contracts with our major partners.

        Ground handling and other.    Total ground handling and other revenues decreased $8.6 million, or 12.9%, during the year ended December 31, 2013, compared to the year ended December 31, 2012. Revenue attributed to ground handling services for our aircraft is reflected in our consolidated statements of comprehensive income under the heading "Operating Revenues—Passenger" and revenue attributed to ground handling services we provide for third-party aircraft is reflected in our consolidated statements of comprehensive income under the heading "Operating Revenues—Ground handling and other." The decrease was primarily related to the decrease in our ground handling for other airlines and a reduction of rental revenue associated with the termination of an aircraft sub-lease we had executed with Air Mekong.

49

        Individual expense components attributable to our operations are expressed in the following table on the basis of cents per ASM. (dollar amounts in thousands).

	For the year ended December 31,
	2013 Amount		2012 Amount		$ Change Amount			% Change Percent			2013 Cents Per ASM		2012 Cents Per ASM
Aircraft fuel	$	193,513	$	426,387	$	(232,874	)		(54.6	)%		0.5		1.1
Salaries, wages and benefits		1,211,307		1,171,689		39,618			3.4	%		3.1		3.1
Aircraft maintenance, materials and repairs		686,381		659,869		26,512			4.0	%		1.8		1.8
Aircraft rentals		325,360		333,637		(8,277	)		(2.5	)%		0.8		0.9
Depreciation and amortization		245,005		251,958		(6,953	)		(2.8	)%		0.6		0.7
Station rentals and landing fees		114,688		169,855		(55,167	)		(32.5	)%		0.3		0.5
Ground handling services		129,119		125,148		3,971			3.2	%		0.3		0.3
Other		239,241		229,842		9,399			4.1	%		0.6		0.6
Total operating expenses		3,144,614		3,368,385		(223,771	)		(6.6	)%		8.0		9.0
Interest expense		68,658		77,380		(8,722	)		(11.3	)%		0.2		0.2
Total airline expenses	$	3,213,272	$	3,445,765		(232,493	)		(6.7	)%		8.2		9.2

        Fuel.    Fuel costs decreased $232.9 million, or 54.6%, during the year ended December 31, 2013, compared to the year ended December 31, 2012. During the third quarter of 2012, United began purchasing the majority of the fuel for flights we operated under our United Express contracts. The resulting decrease in our fuel expense was primarily due to an increase in the number of gallons of fuel purchased by our major partners on flights we operated under our flying contracts. The following table summarizes the gallons of fuel we purchased directly and our fuel expense, for the periods indicated:

	For the year ended December,
(in thousands, except per gallon amounts)	2013		2012		% Change
Fuel gallons purchased		53,825		118,765		(54.7	)%
Fuel expense	$	193,513	$	426,387		(54.6	)%

        Salaries, Wages and Employee Benefits.    Salaries, wages and employee benefits increased $39.6 million, or 3.4%, during the year ended December 31, 2013, compared to the year ended December 31, 2012. The increase in salaries, wages and employee benefits was primarily due to an increase in crew and mechanic wages attributable to increased departures and block-hour production and due to an increase in health insurance and workers compensation expenses.

        Aircraft maintenance, materials and repairs.    Aircraft maintenance expense increased $26.5 million, or 4.0%, during the year ended December 31, 2013, compared to the year ended December 31 2012. The following table summarizes the effect of engine overhaul reimbursements included in our aircraft maintenance expense for the periods indicated (dollar amounts in thousands).

	For the year ended December 31,
	2013		2012		$ Change			% Change
Aircraft maintenance, materials and repairs	$	686,381	$	659,869	$	26,512			4.0	%
Less: Engine overhaul reimbursement from major partners		123,024		159,220		(36,196	)		(22.7	)%
Less: CRJ200 engine overhauls reimbursed at fixed hourly rate		39,388		55,183		(15,795	)		(28.6	)%
Other aircraft maintenance, materials and repairs	$	523,969	$	445,466	$	78,503			17.6	%

50

        Other aircraft maintenance, materials and repairs, increased $78.5 million, or 17.6%, during the year ended December 31, 2013, compared to the year ended December 31, 2012. The increase in aircraft maintenance expense excluding engine overhaul costs for the year ended December, 2013, compared to the year ended December 31, 2012, was primarily due to an increase in the number of scheduled maintenance events and the replacement and repair of aircraft parts and components at ExpressJet and SkyWest Airlines.

        We recognize engine maintenance expense on our CRJ200 engines on an as-incurred basis as maintenance expense. Under our Fixed-Rate Engine Contracts, we recognize revenue at fixed hourly rates for mature engine maintenance on regional jet engines. Accordingly, the timing of engine maintenance events associated with aircraft under the Fixed-Rate Engine Contracts can have a significant impact on our financial results. During the year ended December 31, 2013, our CRJ200 engine expense under our Fixed-Rate Engine Contracts decreased $15.8 million compared to the year ended December 31, 2012. The decrease in CRJ200 engine overhauls reimbursed under our Fixed-Rate Engine Contracts was principally due to fewer scheduled engine maintenance events.

        Under our Directly-Reimbursed Engine Contracts, we are reimbursed for engine overhaul costs by our applicable major partner at the time the maintenance event occurs. Such reimbursements are reflected as passenger revenue in the same amount and during the same period we recognized the expense in our consolidated statements of comprehensive income.

        Aircraft rentals.    Aircraft rentals decreased $8.3 million, or 2.5%, during the year ended December 31, 2013, compared to the year ended December 31, 2012. The decrease was primarily due to aircraft lease renewals at lower rates during 2013.

        Depreciation and amortization.    Depreciation and amortization expense decreased $7.0 million, or 2.8%, during the year ended December 31, 2013, compared to the year ended December 31, 2012. The decrease in depreciation and amortization expense was primarily due to certain rotable assets being fully depreciated during the year ended 2013 and a lower volume of capital expenditures.

        Station rentals and landing fees.    Station rentals and landing fees expense decreased $55.2 million, or 32.5%, during the year ended December 31, 2013, compared to the year ended December 31, 2012. The decrease in station rentals and landing fees expense was primarily due to our major partners paying for certain station rents and landing fees directly to the applicable airports, rather than requiring us to make those payments and obtain reimbursement from our major partners.

        Ground handling service.    Ground handling service expense increased $4.0 million, or 3.2%, during the year ended December 31, 2013, compared to the year ended December 31, 2012. The increase in ground handling service expense was primarily due to SkyWest Airlines outsourcing the customer service and ramp functions of several prorate stations.

        Other expenses.    Other expenses, primarily consisting of property taxes, hull and liability insurance, crew simulator training and crew hotel costs, increased $9.4 million, or 4.1%, during the year ended December 31, 2013, compared to the year ended December 31, 2012. The increase in other expenses during the year ended December 31, 2013 was primarily due to the increase in property tax expense due to refunds received during the year ended December 31, 2012 (primarily a pass-through cost under our flying contracts) and an increase in legal expense due to the settlement of Delta's claims related to travel by certain employees of SkyWest Airlines and ExpressJet.

        Total airline expenses.    Total airline expenses (consisting of total operating and interest expenses) decreased $232.5 million, or 6.7%, during the year ended December 31, 2013, compared to the year ended December 31, 2012. We are reimbursed for our actual fuel costs by our major partners under our contract flying arrangements. We record the amount of those reimbursements as revenue. Under our Directly-Reimbursed Engine Contracts, we are reimbursed for our engine overhaul expense, which

51

we record as revenue. The following table summarizes the amount of fuel and engine overhaul expenses which are included in our total airline expenses for the periods indicated (dollar amounts in thousands).

	For the year ended December 31,
	2013		2012		$ Change			% Change
Total airline expense	$	3,213,272	$	3,445,765	$	(232,493	)		(6.7	)%
Less: Fuel expense		193,513		426,387		(232,874	)		(54.6	)%
Less: Engine overhauls Directly-Reimbursed Engine Contracts		123,024		159,220		(36,196	)		(22.7	)%
Less: CRJ200 engine overhauls reimbursed at fixed hourly rate		39,388		55,183		(15,795	)		(28.6	)%
Total airline expense excluding fuel and engine overhauls and CRJ200 engine overhauls reimbursed at fixed hourly rate		2,857,347	$	2,804,975	$	52,372			1.9	%

        Excluding fuel and engine overhaul costs and CRJ200 engine overhauls reimbursed at fixed hourly rates, our total airline expenses increased $52.4 million, or 1.9%, during the year ended December 31, 2013, compared to the year ended December 31, 2012. The percentage increase in total airline expenses, excluding fuel and engine overhauls, was different than the percentage increase in passenger revenues, excluding fuel and engine overhaul reimbursements from major partners, due primarily to the factors described above.

Summary of other income (expense) items:

        Other, net.    Other, net, increased $21.0 million during the year ended December 31, 2013, compared to the year ended December 31, 2012. The increase was primarily attributable to the termination of our aircraft sub-lease with Air Mekong, and our recognition of $5.1 million of other income primarily due to the maintenance deposits we collected during the nine months ended September 30, 2013 and sale of our shares of Air Mekong. In conjunction with the sale of the Air Mekong shares, we recognized a gain of $5.0 million. During the year ended December 31, 2012, we incurred other expense primarily consisting of losses from our equity investments in TRIP and Air Mekong.

        Interest Income.    Interest income decreased $4.2 million during the year ended December 31, 2013, compared to the year ended December 31, 2012. The decrease was primarily due to our receipt of $49 million of cash from United for amounts previously deferred under the United Express Agreement. Prior to repayment, the deferred amounts accrued interest at 8%.

        Net Income.    Primarily due to factors described above, net income increased to $59.0 million, or $1.12 per diluted share, for the year ended December 31, 2013, compared to $51.2 million, or $0.99 per diluted share, for the year ended December 31, 2012.

52

2012 Compared to 2011

Our Business Segments

        For the year ended December 31, 2012, we had two reportable segments which are the basis of our internal financial reporting: SkyWest Airlines and ExpressJet.

	2012			2011			$ Change			% Change
	Amount			Amount			Amount			Percent
Operating Revenues:
SkyWest Airlines operating revenue	$	1,930,149		$	2,002,830		$	(72,681	)		(3.6	)%
ExpressJet operating revenues		1,593,527			1,640,837			(47,310	)		(2.9	)%
Other operating revenues		10,696			11,256			(560	)		(5.0	)%
Total Operating Revenues	$	3,534,372		$	3,654,923		$	(120,551	)		(3.3	)%
Airline Expenses:
SkyWest airlines expense	$	1,824,084		$	1,944,816		$	(120,732	)		(6.2	)%
ExpressJet airlines expense		1,611,982			1,739,623			(127,641	)		(7.3	)%
Other airline expense		9,699			9,762			(63	)		(0.6	)%
Total Airline Expense(1)	$	3,445,765		$	3,694,201		$	(248,436	)		(6.7	)%
Segment profit (loss):
SkyWest Airlines segment profit	$	106,065		$	58,014		$	48,051			82.8	%
ExpressJet segment (loss)		(18,455	)		(98,786	)		80,331			(81.3	)%
Other profit		997			1,494			(497	)		(33.3	)%
Total Segment Profit (Loss)	$	88,607		$	(39,278	)	$	127,885			(325.6	)%
Interest Income		7,928			8,236			(308	)		(3.7	)%
Purchase Accounting Gain (adjustment)		—			(5,711	)		5,711			100.0	%
Other		(10,639	)		(13,417	)		2,778			(20.7	)%
Consolidated Income (Loss) Before Taxes	$	85,896		$	(50,170	)	$	136,066			(271.2	)%

(1)

Total Airline Expense includes operating expense and interest expense

        SkyWest Airlines Segment Profit.    SkyWest Airlines segment profit increased $48.1 million, or 82.8%, during the year ended December 31, 2012, compared to the year ended December 31, 2011. The increase in SkyWest Airlines' profit was due primarily to the following factors:

•

CRJ200 engine overhaul expense incurred under the SkyWest Airlines Fixed-Rate Engine Contracts decreased $22.6 million. The decrease in CRJ200 engine overhaul expense was primarily due to a reduction in the number of scheduled engine maintenance events.

•

Non-pass-through operating revenue increased by $46.2 million. The increase in non-pass through operating revenue, was primarily due to an increase in block hour production, receipt of higher incentive payments and favorable compensation negotiations with our major partners.

•

SkyWest Airlines salaries, wages and employee benefits increased $24.4 million primarily due to increased block hour production.

        ExpressJet Segment Loss.    ExpressJet segment loss decreased $80.3 million, or 81.3%, during the year ended December 31, 2012, compared to the year ended December 31, 2011. The decrease in ExpressJet's loss was due primarily to the following factors:

•

Non-pass-through operating revenue increased by $33.2 million. The increase in non-pass-through operating revenue was primarily due to an increase in block hour production, our receipt of higher incentive payments and favorable compensation negotiations with our major partners.

53

•

ExpressJet salaries, wages and employee benefits decreased $7.8 million, primarily due to integration benefits and aircraft scheduling inefficiencies experienced in 2011 that were not replicated during 2012.

•

Aircraft maintenance expense, excluding reimbursed engine overhauls, decreased $19.4 million, primarily due to a reduction in scheduled maintenance events and more efficient maintenance planning.

•

Other expenses, primarily consisting of property taxes, hull and liability insurance, crew simulator training and crew hotel costs, decreased $5.6 million, primarily due to a reduction in new hire training from 2011.

•

Non-aircraft depreciation and amortization expense decreased $5.0 million primarily due to certain fixed assets becoming fully depreciated in 2012

        Operational Statistics.    The following table sets forth our major operational statistics and the associated percentages-of-change for the periods identified below.

	Year Ended December 31,
	2012			2011			% Change
Revenue passenger miles (000)		30,088,278			29,109,039			3.4	%
Available seat miles ("ASMs") (000)		37,278,554			36,698,859			1.6	%
Block hours		2,297,014			2,250,280			2.1	%
Departures		1,435,512			1,390,523			3.2	%
Passengers carried		58,803,690			55,836,271			5.3	%
Passenger load factor		80.7	%		79.3	%		1.4pts
Revenue per available seat mile		9.5¢			10.0¢			(5.0	)%
Cost per available seat mile		9.2¢			10.1¢			(8.9	)%
Fuel cost per available seat mile		1.1¢			1.6¢			(31.3	)%
Average passenger trip length (miles)		512			521			(1.7	)%

        Revenues.    Operating revenues decreased $120.6 million, or 3.3%, during the year ended December 31, 2012, compared to the year ended December 31, 2011. We are reimbursed for our actual fuel costs by our major partners under our contract flying arrangements. For financial reporting purposes, we record these reimbursements as operating revenue. Under the Directly-Reimbursed Engine Contracts, we are reimbursed for our engine overhaul expenses as incurred. We also record those engine overhaul reimbursements as operating revenue. The following table summarizes the amount of fuel and engine overhaul reimbursements included in our passenger revenues for the periods indicated (dollar amounts in thousands).

	For the year ended December 31,
	2012		2011		$ Change			% Change
Passenger revenues	$	3,467,546	$	3,584,777	$	(117,231	)		(3.3	)%
Less: Fuel reimbursement from major partners		329,748		492,674		(162,926	)		(33.1	)%
Less: Engine overhaul reimbursement from major partners		159,220		173,072		(13,852	)		(8.0	)%
Passenger revenue excluding fuel and engine overhaul reimbursements	$	2,978,578	$	2,919,031	$	59,547			2.0	%

        Passenger revenues.    Passenger revenues decreased $117.2 million, or 3.3%, during the year ended December 31, 2012, compared to the year ended December 31, 2011. Our passenger revenues, excluding fuel and engine overhaul reimbursements from major partners, increased $59.5 million, or 2.0%, during the year ended December 31, 2012, compared to the year ended December 31, 2011. The

54

increase in passenger revenues, excluding fuel and engine overhaul reimbursements, was primarily due to an increase in block hours of 2.1% during the year ended December 31, 2012 compared to the year ended December 31, 2011. The increase in block hours was due primarily to the increase in total number of aircraft in operation, Block hour production is a significant revenue driver in our flying contracts with our major partners.

        Individual expense components attributable to our operations are expressed in the following table on the basis of cents per ASM. (dollar amounts in thousands).

	For the year ended December 31,
	2012 Amount		2011 Amount		$ Change Amount			% Change Percent			2012 Cents Per ASM		2011 Cents Per ASM
Aircraft fuel	$	426,387	$	592,871	$	(166,484	)		(28.1	)%		1.1		1.6
Salaries, wages and benefits		1,171,689		1,155,051		16,638			1.4	%		3.1		3.1
Aircraft maintenance, materials and repairs		659,869		712,926		(53,057	)		(7.4	)%		1.8		1.9
Aircraft rentals		333,637		346,526		(12,889	)		(3.7	)%		0.9		0.9
Depreciation and amortization		251,958		254,182		(2,224	)		(0.9	)%		0.7		0.7
Station rentals and landing fees		169,855		174,838		(4,983	)		(2.9	)%		0.5		0.5
Ground handling services		125,148		131,462		(6,314	)		(4.8	)%		0.3		0.4
Acquisition-related costs		—		5,770		(5,770	)		NM			—		0.1
Other		229,842		240,192		(10,350	)		(4.3	)%		0.6		0.7
Total operating expenses		3,368,385		3,613,818		(245,433	)		(6.8	)%		9.0		9.9
Interest expense		77,380		80,383		(3,003	)		(3.7	)%		0.2		0.2
Total airline expenses	$	3,445,765	$	3,694,201		(248,436	)		(6.7	)%		9.2		10.1

        Fuel.    Fuel costs decreased $166.5 million, or 28.1%, during the year ended December 31, 2012, compared to the year ended December 31, 2011. The average cost per gallon of fuel increased to $3.59 during the year ended December 31, 2012, from $3.48 during the year ended December 31, 2011. Effective July 1, 2012, United began purchasing the majority of the fuel for flights we operated under our United Express contracts. Thus, the decrease in our fuel expense was primarily due to an increase in the volume of gallons of fuel our major partners purchased on flights we operated under our flying contracts. The following table summarizes the gallons of fuel we purchased directly, and the change in fuel price per gallon on our fuel expense, for the periods indicated:

	For the year ended December,
(in thousands, except per gallon amounts)	2012		2011		% Change
Fuel gallons purchased		118,765		170,332		(30.3	)%
Average price per gallon	$	3.59	$	3.48		3.2	%
Fuel expense	$	426,387	$	592,871		(28.1	)%

        Salaries Wages and Employee Benefits.    Salaries, wages and employee benefits increased $16.6 million, or 1.4%, during the year ended December 31, 2012, compared to the year ended December 31, 2011. The average number of full-time equivalent employees increased 0.9% to 18,590 for the year ended December 31, 2012, from 18,418 for the year ended December 31, 2011. The increase in the average number of full-time equivalent employees and resulting increase in labor costs for the year ended December 31, 2012, compared to the year ended December 31, 2011, was primarily due to an increase in block hours of 2.1% during the year ended December 31, 2012, compared to the year ended December 31, 2011.

55

        Aircraft maintenance, materials and repairs.    Aircraft maintenance expense decreased $53.1 million, or 7.4%, during the year ended December 31, 2012, compared to the year ended December 31, 2011. The following table summarizes the amount of engine overhauls and engine overhaul reimbursements included in our aircraft maintenance expense for the periods indicated (dollar amounts in thousands).

	For the year ended December 31,
	2012		2011		$ Change			% Change
Aircraft maintenance, materials and repairs	$	659,869	$	712,926	$	(53,057	)		(7.4	)%
Less: Engine overhaul reimbursement from major partners		159,220		173,072		(13,852	)		(8.0	)%
Less: CRJ200 engine overhauls reimbursed at fixed hourly rate		55,183		77,582		(22,399	)		(28.9	)%
Other aircraft maintenance, materials and repairs	$	445,466	$	462,272	$	(16,806	)		(3.6	)%

        Other aircraft maintenance, materials and repairs, decreased $16.8 million, or 3.6%, during the year ended December 31, 2012, compared to the year ended December 31, 2011. The decrease in aircraft maintenance expense excluding engine overhaul costs for the year ended December 31, 2012, compared to the year ended December 31, 2011, was primarily due to fewer scheduled maintenance events and our implementation of cost-reduction initiatives.

        We recognize engine maintenance expense on our CRJ200 engines on an as-incurred basis as maintenance expense. Under our Fixed-Rate Engine Contracts, we recognize revenue at fixed hourly rates for mature engine maintenance on regional jet engines. Accordingly, the timing of engine maintenance events associated with aircraft under the Fixed-Rate Engine Contracts can have a significant impact on our financial results. During the year ended December 31, 2012, our CRJ200 engine expense under our Fixed-Rate Engine Contracts decreased $22.4 million compared to the year ended December 31, 2011. The decrease in CRJ200 engine overhauls reimbursed under our Fixed-Rate Engine Contracts was principally due to fewer scheduled engine maintenance events. Under our Directly-Reimbursed Engine Contracts, we are reimbursed for engine overhaul costs by our major partner at the time the maintenance event occurs. Such reimbursements are reflected as passenger revenue in our consolidated statements of comprehensive income (loss).

        Aircraft rentals.    Aircraft rentals decreased $12.9 million, or 3.7%, during the year ended December 31, 2012, compared to the year ended December 31, 2011. The decrease was primarily due to aircraft lease renewals at lower rates.

        Depreciation and amortization.    Depreciation and amortization expense decreased $2.2 million, or 0.9%, during the year ended December 31, 2012, compared to the year ended December 31, 2011. The decrease in depreciation expense was primarily due to certain rotable assets being fully depreciated during 2012 and a lower volume of capital expenditures.

        Station rentals and landing fees.    Station rentals and landing fees expense decreased $5.0 million, or 2.9%, during the year ended December 31, 2012, compared to the year ended December 31, 2011. The decrease in station rentals and landing fees expense was primarily due to our major partners paying for certain station rents and landing fees directly to the applicable airports.

        Ground handling service.    Ground handling service expense decreased $6.3 million, or 4.8%, during the year ended December 31, 2012, compared to the year ended December 31, 2011. The decrease in ground handling service expense was primarily due to a reduction in outsourced ground handling services resulting from the termination of SkyWest Airlines' AirTran code share agreement during the year ended December 31, 2011.

        Acquisition-related costs.    During the year ended December 31, 2011, we incurred $5.8 million of direct severance, legal and advisor fees associated with Atlantic Southeast's acquisition of ExpressJet

56

Delaware in November 2010. We did not incur comparable expense during the year ended December 31, 2012.

        Other operating expenses.    Other expenses, primarily consisting of property taxes, hull and liability insurance, crew simulator training and crew hotel costs, decreased $10.4 million, or 4.3%, during the year ended December 31, 2012, compared to the year ended December 31, 2011. The decrease in other operating expenses was primarily due to the reduction in property tax expense resulting from refunds received during the year ended December 31, 2012, a reduction in simulator training expense and a reduction in legal and consulting expenses.

        Total airline expenses.    Total airline expenses (consisting of total operating and interest expenses) decreased $248.4 million, or 6.7%, during the year ended December 31, 2012, compared to the year ended December 31, 2011. We are reimbursed for our actual fuel costs by our major partners under our contract flying arrangements. We record the amount of those reimbursements as revenue. Under our Directly-Reimbursed Engine Contracts, we are reimbursed for our engine overhaul expense, which we record as revenue. The following table summarizes the amount of fuel and engine overhaul expenses which are included in our total airline expenses for the periods indicated (dollar amounts in thousands).

	For the year ended December 31,
	2012		2011		$ Change			% Change
Total airline expense	$	3,445,765	$	3,694,201	$	(248,436	)		(6.7	)%
Less: Fuel expense		426,387		592,871		(166,484	)		(28.1	)%
Less: Engine overhauls Directly-Reimbursed Engine Contracts		159,220		173,072		(13,852	)		(8.0	)%
Less: CRJ200 engine overhauls reimbursed at fixed hourly rate		55,183		77,582		(22,399	)		(28.9	)%
Total airline expense excluding fuel and engine overhauls and CRJ200 engine overhauls reimbursed at fixed hourly rate	$	2,804,975	$	2,850,676	$	(45,701	)		(1.6	)%

        Excluding fuel and engine overhaul costs and CRJ200 engine overhauls reimbursed at fixed hourly rates, our total airline expenses decreased $45.7 million, or 1.6%, during the year ended December 31, 2012, compared to the year ended December 31, 2011. The percentage decrease in total airline expenses, excluding fuel and engine overhauls, was different than the percentage increase in passenger revenues, excluding fuel and engine overhaul reimbursements from major partners, due primarily to the factors described above.

Summary of other income (expense) items:

        Other expenses, net.    Other expenses, net decreased $2.8 million during the year ended December 31, 2012, compared to the year ended December 31, 2011. Other expenses primarily consist of earnings and losses from our investments in TRIP and Air Mekong, which we account for under the equity method of accounting. The decrease in other expenses was due primarily to our recognition of our portion of the losses incurred by TRIP and Air Mekong during the applicable periods.

        Adjustment to Purchase Accounting Gain.    In connection with the preparation of ExpressJet's 2010 tax return, an adjustment to the ExpressJet acquisition accounting was identified that resulted in an increase to the acquired deferred tax liabilities of $5.7 million, which was reflected on the consolidated statement of comprehensive income (loss) under the caption "Purchase accounting gain (adjustment)" for the year ended December 31, 2011. We did not incur comparable expenses during the year ended December 31, 2012.

57

        Income Taxes Expense.    Our effective tax rate for the years ended December 31, 2012 and 2011 was higher than the federal statutory rate of 35%, primarily due to state income taxes and expenses we incurred with limited tax deductibility relative to our pre-tax income for the year. Additionally, in conjunction with the preparation of the ExpressJet's 2010 income tax return during the year ended December 31, 2011, we revised our estimate of the 2010 ExpressJet post-acquisition tax loss recorded as a deferred tax asset as of December 31, 2010, which resulted in a $7.2 million benefit.

        Net Income (loss).    Primarily due to factors described above, we had net income of $51.2 million, or $0.99 per diluted share, for the year ended December 31, 2012, compared to net loss of $(27.3) million, or ($0.52) per diluted share, for the year ended December 31, 2011.

Liquidity and Capital Resources

Sources and Uses of Cash

        Cash Position and Liquidity.    The following table provides a summary of the net cash provided by (used in) our operating, investing and financing activities for the years ended December 31, 2013 and 2012, and our total cash and marketable securities position as of December 31, 2013 and December 31, 2012 (in thousands).

	For the year ended December 31,
	2013			2012			$ Change			% Change
Net cash provided by operating activities	$	289,890		$	288,824			1,066			0.4	%
Net cash used in investing activities		(65,961	)		(108,360	)		42,399			39.1	%
Net cash used in financing activities		(187,065	)		(176,218	)		(10,847	)		(6.2	)%

	December 31, 2013		December 31, 2012		$ Change			% Change
Cash and cash equivalents	$	170,636	$	133,772		36,864			27.6	%
Restricted cash		12,219		19,553		(7,334	)		(37.5	)%
Marketable securities		487,239		556,117		(68,878	)		(12.4	)%
Total		670,094	$	709,442		(39,348	)		(5.5	)%

Cash Flows from Operating Activities.

        Net cash provided by operating activities increased $1.1 million, or 0.4%, during the year ended December 31, 2013, compared to the year ended December 31, 2012. The increase was primarily due to our receipt of $49 million of cash from United during the year ended December 31, 2013 for amounts previously deferred under the United Express Agreement. This increase was mostly offset by changes in our working capital accounts.

Cash Flows from Investing Activities.

        Net cash used in investing activities decreased $42.4 million, or 39.1% during the year ended December 31, 2013, compared to the year ended December 31, 2012. During the year ended December 31, 2013, net sales of marketable securities increased $127.4 million as compared to the year ended December 31, 2012. This change was partially offset by an increase in deposits on aircraft of $40 million and an increase in purchases of aircraft and rotable spares of $45.2 million during the year ended December 31, 2013, compared to the year ended December 31, 2012.

58

Cash Flows from Financing Activities.

        Net cash used in financing activities increased $10.8 million, or 6.2%, during the year ended December 31, 2013, compared to the year ended December 31, 2012. The increase was primarily related to increased expense attributable to the increase in purchase of treasury shares of $10.8 million during the year ended December 31, 2013, compared to the year ended December, 2012.

Liquidity and Capital Resources

        We believe that in the absence of unusual circumstances, the working capital currently available to us, together with our projected cash flows from operations, will be sufficient to meet our present financial requirements, including anticipated expansion, planned capital expenditures, and scheduled lease payments and debt service obligations for at least the next 12 months.

        At December 31, 2013, our total capital mix was 52.6% equity and 47.4% long-term debt, compared to 48.5% equity and 51.5% long-term debt at December 31, 2012.

        As of December 31, 2013 and 2012, SkyWest Airlines had a $25 million line of credit. As of December 31, 2013 and 2012, SkyWest Airlines had no amount outstanding under the facility. The facility is scheduled to expire on March 31, 2014 and has a variable interest rate of Libor plus 3%.

        As of December 31, 2013, we had $88.5 million in letters of credit and surety bonds outstanding with various banks and surety institutions.

        As of December 31, 2013 and 2012, we classified $12.2 million and $19.6 million as restricted cash, respectively, related to our workers compensation policies.

Significant Commitments and Obligations

General

        The following table summarizes our commitments and obligations as noted for each of the next five years and thereafter (in thousands):

	Total		2014		2015		2016		2017		2018		Thereafter
Operating lease payments for aircraft and facility obligations	$	1,889,363	$	380,413	$	331,151	$	258,464	$	194,258	$	153,294	$	571,783
Firm aircraft commitments		1,166,829		709,700		447,157		9,972		—		—		—
Interest commitments(A)		363,311		64,564		57,736		50,601		43,409		36,800		110,201
Principal maturities on long-term debt		1,470,568		177,389		184,510		188,240		161,735		139,020		619,674
Total commitments and obligations	$	4,890,071	$	1,332,066	$	1,020,554	$	507,277	$	399,402	$	329,114	$	1,301,658

(A)

At December 31, 2013, we had variable rate notes representing 29.5% of our total long-term debt. Actual interest commitments will change based on the actual variable interest.

Purchase Commitments and Options

        On May 21, 2013, we announced our execution of an agreement with Embraer, S.A. for the purchase of 100 new E175 dual-class regional jet aircraft. Of the 100 aircraft, 40 are considered firm deliveries and the remaining 60 aircraft are considered conditional until we enter into capacity purchase agreements with other major airlines to operate the aircraft. We anticipate that we will begin taking

59

delivery of these aircraft in March 2014 and have scheduled delivery of the remaining aircraft covered by the order through August 2015.

        We have not historically funded a substantial portion of our aircraft acquisitions with working capital. Rather, we have generally funded our aircraft acquisitions through a combination of operating leases and long-term debt financing. At the time of each aircraft acquisition, we evaluate the financing alternatives available to us, and select one or more of these methods to fund the acquisition. At present, we intend to fund our acquisition of any additional aircraft through a combination of operating leases and debt financing, consistent with our historical practices. Based on current market conditions and discussions with prospective leasing organizations and financial institutions, we currently believe that we will be able to obtain financing for our committed acquisitions, as well as additional aircraft, without materially reducing the amount of working capital available for our operating activities.

Aircraft Lease and Facility Obligations

        We also have significant long-term lease obligations, primarily relating to our aircraft fleet. At December 31, 2013, we had 570 aircraft under lease with remaining terms ranging from one to 12 years. Future minimum lease payments due under all long-term operating leases were approximately $1.9 billion at December 31, 2013. Assuming a 5.8% discount rate, which is the average rate used to approximate the implicit rates within the applicable aircraft leases, the present value of these lease obligations would have been equal to approximately $1.5 billion at December 31, 2013.

Long-term Debt Obligations

        As of December 31, 2013, we had $1.5 billion of long-term debt obligations related to the acquisition of CRJ200, CRJ700 and CRJ900 aircraft. The average effective interest rate on the debt related to the CRJ aircraft was approximately 4.5% at December 31, 2013.

Guarantees

        We have guaranteed the obligations of SkyWest Airlines under the SkyWest Airlines Delta Connection Agreement and the obligations of ExpressJet under the ExpressJet Delta Connection Agreement. We have also guaranteed the obligations of ExpressJet under the United CPA.

ITEM 7A.    QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

Aircraft Fuel

        In the past, we have not experienced difficulties with fuel availability and we currently expect to be able to obtain fuel at prevailing prices in quantities sufficient to meet our future needs. Pursuant to our contract flying arrangements, United, Delta, Alaska, American and US Airways have agreed to bear the economic risk of fuel price fluctuations on our contracted flights. We bear the economic risk of fuel price fluctuations on our pro-rate operations. For the year ended December 31, 2013, approximately 3% of our ASMs were flown under pro-rate arrangements. The average price per gallon of aircraft fuel decreased 3.9% to $3.45 for the year ended December 31, 2013, from $3.59 for the year ended December 31, 2012. For illustrative purposes only, we have estimated the impact of the market risk of fuel on our pro-rate operations using a hypothetical increase of 25% in the price per gallon we purchase. Based on this hypothetical assumption, we would have incurred an additional $25.3 million in fuel expense for the year ended December 31, 2013.

Interest Rates

        Our earnings are affected by changes in interest rates due to the amounts of variable rate long-term debt and the amount of cash and securities held. The interest rates applicable to variable

60

rate notes may rise and increase the amount of interest expense. We would also receive higher amounts of interest income on cash and securities held at the time; however, the market value of our available-for-sale securities would likely decline. At December 31, 2013, we had variable rate notes representing 29.5% of our total long-term debt compared to 31.7% of our long-term debt at December 31, 2012. For illustrative purposes only, we have estimated the impact of market risk using a hypothetical increase in interest rates of one percentage point for both variable rate long-term debt and cash and securities. Based on this hypothetical assumption, we would have incurred an additional $4.8 million in interest expense and received $6.7 million in additional interest income for the year ended December 31, 2013, and we would have incurred an additional $5.5 million in interest expense and received $6.5 million in additional interest income for the year ended December 31, 2012. However, under our contractual arrangement with our major partners, the majority of the increase in interest expense would be passed through and recorded as passenger revenue in our consolidated statements of comprehensive income (loss). If interest rates were to decline, our major partners would receive the principal benefit of the decline, since interest expense is generally passed through to our major partners, resulting in a reduction to passenger revenue in our consolidated statement of comprehensive income (loss).

        We currently intend to finance the acquisition of aircraft through manufacturer financing, third-party leases or long-term borrowings. Changes in interest rates may impact the actual cost to us to acquire these aircraft. To the extent we place these aircraft in service under our code-share agreements with Delta, United, or other carriers, our code-share agreements currently provide that reimbursement rates will be adjusted higher or lower to reflect changes in our aircraft rental rates.

Auction Rate Securities

        We have investments in auction rate securities, which are classified as available for sale securities and reflected at fair value. As of December 31, 2013, we had investments in auction rate securities valued at a total of $2.2 million which were classified as "Other Assets" on our consolidated balance sheet. For a more detailed discussion on auction rate securities, including our methodology for estimating their fair value, see Note 6 to our consolidated financial statements appearing in Item 8 of this Report.

ITEM 8.    FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

        The information set forth below should be read together with the "Management's Discussion and Analysis of Financial Condition and Results of Operations," appearing elsewhere herein.

61

Report of Independent Registered Public Accounting Firm

The Board of Directors and Stockholders
SkyWest, Inc.

        We have audited the accompanying consolidated balance sheets of SkyWest, Inc. and subsidiaries as of December 31, 2013 and 2012, and the related consolidated statements of comprehensive income (loss), stockholders' equity, and cash flows for each of the three years in the period ended December 31, 2013. These financial statements are the responsibility of the Company's management. Our responsibility is to express an opinion on these financial statements based on our audits.

        We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements. An audit also includes assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. We believe that our audits provide a reasonable basis for our opinion.

        In our opinion, the financial statements referred to above present fairly, in all material respects, the consolidated financial position of SkyWest, Inc. and subsidiaries at December 31, 2013 and 2012, and the consolidated results of their operations and their cash flows for each of the three years in the period ended December 31, 2013, in conformity with U.S. generally accepted accounting principles.

        We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), SkyWest, Inc. and subsidiaries' internal control over financial reporting as of December 31, 2013, based on criteria established in Internal Control—Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission and our report dated February 14, 2014 expressed an unqualified opinion thereon.

/s/ Ernst & Young LLP

Salt Lake City, Utah
February 14, 2014

62

SKYWEST, INC. AND SUBSIDIARIES

CONSOLIDATED BALANCE SHEETS

(Dollars in thousands)

ASSETS

	December 31, 2013			December 31, 2012
CURRENT ASSETS:
Cash and cash equivalents	$	170,636		$	133,772
Marketable securities		487,239			556,117
Restricted cash		12,219			19,553
Income tax receivable		840			—
Receivables, net		111,186			130,102
Inventories, net		138,094			113,581
Prepaid aircraft rents		360,781			325,999
Deferred tax assets		156,050			124,320
Other current assets		27,392			30,596
Total current assets		1,464,437			1,434,040
PROPERTY AND EQUIPMENT:
Aircraft and rotable spares		4,080,886			3,997,926
Deposits on aircraft		40,000			—
Buildings and ground equipment		279,965			274,085
		4,400,851			4,272,011
Less-accumulated depreciation and amortization		(1,749,058	)		(1,561,015	)
Total property and equipment, net		2,651,793			2,710,996
OTHER ASSETS
Intangible assets, net		14,998			17,248
Other assets		101,991			92,353
Total other assets		116,989			109,601
Total assets	$	4,233,219		$	4,254,637

See accompanying notes to consolidated financial statements.

63

SKYWEST, INC. AND SUBSIDIARIES

CONSOLIDATED BALANCE SHEETS (Continued)

(Dollars in thousands)

LIABILITIES AND STOCKHOLDERS' EQUITY

	December 31, 2013			December 31, 2012
CURRENT LIABILITIES:
Current maturities of long-term debt	$	177,389		$	171,454
Accounts payable		245,518			222,671
Accrued salaries, wages and benefits		133,002			121,352
Accrued aircraft rents		7,492			12,745
Taxes other than income taxes		19,626			22,353
Income tax payable		—			1,255
Other current liabilities		37,437			39,595
Total current liabilities		620,464			591,425
OTHER LONG TERM LIABILITIES		76,305			57,422
LONG TERM DEBT, net of current maturities		1,293,179			1,470,568
DEFERRED INCOME TAXES PAYABLE		727,358			657,620
DEFERRED AIRCRAFT CREDITS		80,974			90,427
COMMITMENTS AND CONTINGENCIES (Note 6)
STOCKHOLDERS' EQUITY:
Preferred stock, 5,000,000 shares authorized; none issued		—			—
Common stock, no par value, 120,000,000 shares authorized; 77,325,702 and 76,713,154 shares issued, respectively		618,511			609,763
Retained earnings		1,197,819			1,147,117
Treasury stock, at cost, 26,095,636 and 25,280,364 shares, respectively		(382,950	)		(371,211	)
Accumulated other comprehensive income (Note 1)		1,559			1,506
Total stockholders' equity		1,434,939			1,387,175
Total liabilities and stockholders' equity	$	4,233,219		$	4,254,637

See accompanying notes to consolidated financial statements.

64

SKYWEST, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)

(In thousands, except per share amounts)

	Year Ended December 31,
	2013			2012			2011
OPERATING REVENUES:
Passenger	$	3,239,525		$	3,467,546		$	3,584,777
Ground handling and other		58,200			66,826			70,146
Total operating revenues		3,297,725			3,534,372			3,654,923
OPERATING EXPENSES:
Salaries, wages and benefits		1,211,307			1,171,689			1,155,051
Aircraft maintenance, materials and repairs		686,381			659,869			712,926
Aircraft rentals		325,360			333,637			346,526
Depreciation and amortization		245,005			251,958			254,182
Aircraft fuel		193,513			426,387			592,871
Station rentals and landing fees		114,688			169,855			174,838
Ground handling services		129,119			125,148			131,462
Acquisition related costs		—			—			5,770
Other, net		239,241			229,842			240,192
Total operating expenses		3,144,614			3,368,385			3,613,818
OPERATING INCOME		153,111			165,987			41,105
OTHER INCOME (EXPENSE):
Interest income		3,689			7,928			8,236
Interest expense		(68,658	)		(77,380	)		(80,383	)
Purchase accounting adjustment		—			—			(5,711	)
Other, net		10,390			(10,639	)		(13,417	)
Total other expense, net		(54,579	)		(80,091	)		(91,275	)
INCOME (LOSS) BEFORE INCOME TAXES		98,532			85,896			(50,170	)
PROVISION (BENEFIT) FOR INCOME TAXES		39,576			34,739			(22,835	)
NET INCOME (LOSS)	$	58,956		$	51,157		$	(27,335	)
BASIC EARNINGS (LOSS) PER SHARE	$	1.14		$	1.00		$	(0.52	)
DILUTED EARNINGS (LOSS) PER SHARE	$	1.12		$	0.99		$	(0.52	)
Weighted average common shares:
Basic		51,688			51,090			52,201
Diluted		52,422			51,746			52,201
COMPREHENSIVE INCOME (LOSS):
Net income (loss)	$	58,956		$	51,157		$	(27,335	)
Proportionate share of other companies foreign currency translation adjustment, net of taxes		66			(251	)		(295	)
Net unrealized appreciation (depreciation) on marketable securities, net of taxes		(13	)		316			534
TOTAL COMPREHENSIVE INCOME (LOSS)	$	59,009		$	51,222		$	(27,096	)

See accompanying notes to consolidated financial statements.

65

SKYWEST, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY

(In thousands)

	Common Stock								Treasury Stock						Accumulated Other Comprehensive Income (Loss)
						Retained Earnings
	Shares		Amount						Shares			Amount						Total
Balance at December 31, 2010		75,245	$	589,610		$	1,139,739			(21,072	)	$	(309,628	)	$	1,202		$	1,420,923
Net loss		—		—			(27,335	)		—			—			—			(27,335	)
Proportionate share of other companies foreign currency translation adjustment, net of tax of $180		—		—			—			—			—			(295	)		(295	)
Net unrealized appreciation on marketable securities net of tax of $327		—		—			—			—			—			534			534
Exercise of common stock options and issuance of restricted stock		289		70			—			—			—			—			70
Sale of common stock under employee stock purchase plan		300		4,372			—			—			—			—			4,372
Stock based compensation expense related to the issuance of stock options and restricted stock		—		5,365			—			—			—			—			5,365
Tax deficiency from exercise of common stock options		—		(432	)		—			—			—			—			(432	)
Treasury stock purchases		—		—			—			(4,149	)		(60,681	)		—			(60,681	)
Cash dividends declared ($0.16 per share)		—		—			(8,260	)		—			—			—			(8,260	)
Balance at December 31, 2011		75,834		598,985			1,104,144			(25,221	)		(370,309	)		1,441			1,334,261
Net income		—		—			51,157			—			—			—			51,157
Proportionate share of other companies foreign currency translation adjustment, net of tax of $154		—		—			—			—			—			(251	)		(251	)
Net unrealized appreciation on marketable securities, net of tax of $194		—		—			—			—			—			316			316
Exercise of common stock options and issuance of restricted stock		392		1,879			—			—			—			—			1,879
Sale of common stock under employee stock purchase plan		487		4,068			—			—			—			—			4,068
Stock based compensation expense related to the issuance of stock options and restricted stock		—		4,693			—			—			—			—			4,693
Tax benefit from exercise of common stock options		—		138			—			—			—			—			138
Treasury stock purchases		—		—			—			(59	)		(902	)		—			(902	)
Cash dividends declared ($0.16 per share)		—		—			(8,184	)		—			—			—			(8,184	)
Balance at December 31, 2012		76,713		609,763			1,147,117			(25,280	)		(371,211	)		1,506			1,387,175
Net income		—		—			58,956			—			—			—			58,956
Proportionate share of other companies foreign currency translation adjustment, net of tax of $8		—		—			—			—			—			66			66
Net unrealized depreciation on marketable securities, net of tax of $43		—		—			—			—			—			(13	)		(13	)
Exercise of common stock options and issuance of restricted stock		313		835			—			—			—			—			835
Sale of common stock under employee stock purchase plan		300		3,696			—			—			—			—			3,696
Stock based compensation expense related to the issuance of stock options and restricted stock		—		4,363			—			—			—			—			4,363
Tax deficiency from exercise of common stock options		—		(146	)		—			—			—			—			(146	)
Treasury stock purchases		—		—			—			(816	)		(11,739	)		—			(11,739	)
Cash dividends declared ($0.16 per share)		—		—			(8,254	)		—			—			—			(8,254	)
Balance at December 31, 2013		77,326	$	618,511		$	1,197,819			(26,096	)	$	(382,950	)	$	1,559		$	1,434,939

See accompanying notes to consolidated financial statements.

66

SKYWEST, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CASH FLOWS

(In thousands)

	Year Ended December 31,
	2013			2012			2011
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)	$	58,956		$	51,157		$	(27,335	)
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization		245,005			251,958			254,182
Stock based compensation expense		4,363			4,693			5,365
Loss (gain) on sale of property and equipment		—			621			(29	)
Undistributed losses (earnings) of other companies		(10,830	)		10,199			13,273
Capitalized Brasilia engine overhauls		(29,606	)		(25,742	)		(17,792	)
Adjustment to purchase accounting gain		—			—			5,711
Net increase (decrease) in deferred income taxes		38,007			34,800			(21,537	)
Changes in operating assets and liabilities:
Decrease (increase) in restricted cash		7,334			(119	)		2,341
Decrease (increase) in receivables		18,916			408			(10,665	)
Decrease (increase)in income tax receivable		(840	)		1,568			1,788
Decrease (increase) in inventories		(24,513	)		1,630			(8,639	)
Increase in other current assets and prepaid aircraft rents		(31,578	)		(39,451	)		(28,668	)
Decrease in deferred aircraft credits		(8,432	)		(7,112	)		(8,586	)
Increase (decrease) in accounts payable and accrued aircraft rents		17,594			(7,653	)		10,161
Increase (decrease) in other current liabilities		5,514			11,867			(7,444	)
NET CASH PROVIDED BY OPERATING ACTIVITIES		289,890			288,824			162,126
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of marketable securities		(488,564	)		(736,330	)		(683,396	)
Sales of marketable securities		557,424			677,798			857,031
Proceeds from the sale of property and equipment		293			15,265			193
Proceeds from installment payment of equity shares of TRIP		16,658			8,064			—
Acquisition of property and equipment:
Aircraft and rotable spare parts		(102,499	)		(57,277	)		(158,942	)
Deposits on aircraft		(40,000	)		—			(13,500	)
Buildings and ground equipment		(9,502	)		(7,662	)		(13,756	)
Decrease (increase) in other assets		229			(8,218	)		817
NET CASH USED IN INVESTING ACTIVITIES		(65,961	)		(108,360	)		(11,553	)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from issuance of long-term debt		—			44,900			76,454
Principal payments on long-term debt		(171,453	)		(218,270	)		(159,038	)
Return of deposits on aircraft and rotable spare parts		—			—			13,900
Net proceeds from issuance of common stock		4,385			6,231			4,446
Purchase of treasury stock		(11,739	)		(902	)		(60,681	)
Payment of cash dividends		(8,258	)		(8,177	)		(8,466	)
NET CASH USED IN FINANCING ACTIVITIES		(187,065	)		(176,218	)		(133,385	)
Increase in cash and cash equivalents		36,864			4,246			17,188
Cash and cash equivalents at beginning of year		133,772			129,526			112,338
CASH AND CASH EQUIVALENTS AT END OF YEAR		170,636			133,772			129,526
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:
Cash paid (received) during the year for:
Interest, net of capitalized amounts	$	71,323		$	78,407		$	81,187
Income taxes	$	3,678		$	(1,354	)	$	(2,198	)

See accompanying notes to consolidated financial statements.

67

SKYWEST, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

DECEMBER 31, 2013

(1) Nature of Operations and Summary of Significant Accounting Policies

        SkyWest, Inc. (the "Company"), through its subsidiaries, SkyWest Airlines, Inc. ("SkyWest Airlines") and ExpressJet Airlines, Inc. ("ExpressJet") operates the largest regional airline in the United States. As of December 31, 2013, SkyWest and ExpressJet offered scheduled passenger and air freight service with approximately 4,000 total daily departures to different destinations in the United States, Canada, Mexico and the Caribbean. Additionally, the Company provides ground handling services for other airlines throughout its system. As of December 31, 2013, the Company had a combined fleet of 757 aircraft consisting of the following:

	CRJ200		ERJ145		ERJ135		CRJ700		CRJ900		EMB120		Total
United		92		242		9		70		—		36		449
Delta		125		—		—		60		60		9		254
American		23		—		—		—		—		—		23
US Airways		11		—		—		—		4		—		15
Alaska		—		—		—		7		—		—		7
Subleased to an un-affiliated entity		2		—		—		—		—		—		2
Unassigned		7		—		—		—		—		—		7
Total		260		242		9		137		64		45		757

        For the year ended December 31, 2013, approximately 60.9% of the Company's aggregate capacity was operated for United, approximately 33.6% was operated for Delta approximately 1.3% was operated for Alaska, approximately 1.6% was operated for US Airways and approximately 2.6% was operated for American.

        SkyWest Airlines has been a code-share partner with Delta in Salt Lake City and United in Los Angeles since 1987 and 1997, respectively. In 1998, SkyWest Airlines expanded its relationship with United to provide service in Portland, Seattle/Tacoma, San Francisco and additional Los Angeles markets. In 2004, SkyWest Airlines expanded its United Express operations to provide service in Chicago. In May 2011, SkyWest Airlines entered into a capacity purchase agreement with Alaska. In November 2011, SkyWest Airlines entered into a code share agreement with US Airways. In September, 2012, SkyWest Airlines and ExpressJet entered into code share agreements (the "American Agreements") with American Airlines, Inc. ("American"). As of December 31, 2013, SkyWest Airlines operated as a Delta Connection carrier in Salt Lake City and Minneapolis, a United Express carrier in Los Angeles, San Francisco, Denver, Houston, Chicago and the Pacific Northwest, an Alaska carrier in Seattle/ Tacoma and Portland, a US Airways carrier in Phoenix and an American carrier in Los Angeles.

        On November 17, 2011, the Company's wholly-owned subsidiaries, Atlantic Southeast Airlines, Inc. and ExpressJet Airlines, Inc., consolidated their operations under a single operating certificate, and on December 31, 2011, Atlantic Southeast Airlines, Inc. and ExpressJet Airlines, Inc. were merged, with the surviving corporation named ExpressJet Airlines, Inc. (the "ExpressJet Combination"). In the following Notes to Consolidated Financial Statements, "Atlantic Southeast" refers to Atlantic Southeast Airlines, Inc. for periods prior to the ExpressJet Combination, "ExpressJet Delaware" refers to ExpressJet Airlines, Inc., a Delaware corporation, for periods prior to the ExpressJet Combination, and "ExpressJet" refers to ExpressJet Airlines, Inc., the Utah corporation resulting from the combination of

68

SKYWEST, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

DECEMBER 31, 2013

(1) Nature of Operations and Summary of Significant Accounting Policies (Continued)

Atlantic Southeast and ExpressJet Delaware, for periods subsequent to the ExpressJet Combination. At the time of the ExpressJet Combination, Atlantic Southeast had been a code-share partner with Delta in Atlanta since 1984 and a code-share partner with United since February 2010. As of December 31, 2013, ExpressJet operated as a Delta Connection carrier in Atlanta and Detroit and a United Express carrier in Chicago (O'Hare), Washington, D.C. (Dulles International Airport), Cleveland, Newark, Houston and Denver.

Basis of Presentation

        The Company's consolidated financial statements include the accounts of SkyWest, Inc. and its subsidiaries, including SkyWest Airlines and ExpressJet, with all inter-company transactions and balances having been eliminated.

        In preparing the accompanying consolidated financial statements, the Company has reviewed, as determined necessary by the Company's management, events that have occurred after December 31, 2013, up until the filing of the Company's annual report with the U.S. Securities and Exchange Commission.

Use of Estimates

        The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

Cash and Cash Equivalents

        The Company considers all highly liquid investments with an original maturity of three months or less to be cash equivalents. The Company classified $12.2 million and $19.6 million of cash as restricted cash as required by the Company's workers' compensation policy and classified it accordingly in the consolidated balance sheets as of December 31, 2013 and 2012, respectively.

Marketable Securities

        The Company's investments in marketable debt and equity securities are deemed by management to be available for sale and are reported at fair market value with the net unrealized appreciation (depreciation) reported as a component of accumulated other comprehensive income in stockholders' equity. At the time of sale, any realized appreciation or depreciation, calculated by the specific

69

SKYWEST, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

DECEMBER 31, 2013

(1) Nature of Operations and Summary of Significant Accounting Policies (Continued)

identification method, is recognized in other income and expense. The Company's position in marketable securities as of December 31, 2013 and 2012 was as follows (in thousands):

	2013				2012
Investment Types	Cost		Market Value		Cost		Market Value
Commercial paper	$	—	$	—	$	3,510	$	3,514
Bond and bond funds		489,071		489,294		555,603		556,133
Asset backed securities		182		190		296		314
		489,253		489,484		559,409		559,961
Unrealized appreciation		231		—		552		—
Total		489,484		489,484	$	559,961	$	559,961

        Marketable securities had the following maturities as of December 31, 2013 (in thousands):

Maturities	Amount
Year 2014	$	304,353
Years 2015 through 2018		182,873
Years 2019 through 2023		—
Thereafter		2,258

        As of December 31, 2013, the Company had classified $487.2 million of marketable securities as short-term since it has the intent to maintain a liquid portfolio and the ability to redeem the securities within one year. The Company has classified approximately $2.2 million of investments as non-current and has identified them as "Other assets" in the Company's consolidated balance sheet as of December 31, 2013 (see Note 7).

Inventories

        Inventories include expendable parts, fuel and supplies and are valued at cost (FIFO basis) less an allowance for obsolescence based on historical results and management's expectations of future operations. Expendable inventory parts are charged to expense as used. An obsolescence allowance for flight equipment expendable parts is accrued based on estimated lives of the corresponding fleet types and salvage values. The inventory allowance as of December 31, 2013 and 2012 was $10.1 million and $9.2 million, respectively. These allowances are based on management estimates, which are subject to change.

70

SKYWEST, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

DECEMBER 31, 2013

(1) Nature of Operations and Summary of Significant Accounting Policies (Continued)

Property and Equipment

        Property and equipment are stated at cost and depreciated over their useful lives to their estimated residual values using the straight-line method as follows:

Assets	Depreciable Life	Residual Value
Aircraft and rotable spares	10 - 18 years	0 - 30%
Ground equipment	5 - 10 years	0%
Office equipment	5 - 7 years	0%
Leasehold improvements	15 years or life of the lease	0%
Buildings	20 - 39.5 years	0%

Impairment of Long Lived Assets

        As of December 31, 2013, the Company had approximately $2.7 billion of property and equipment and related assets. Additionally, as of December 31, 2013, the Company had approximately $15.0 million in intangible assets. In accounting for these long-lived and intangible assets, the Company makes estimates about the expected useful lives of the assets, the expected residual values of certain of these assets, and the potential for impairment based on the fair value of the assets and the cash flows they generate. On September 7, 2005, the Company completed the acquisition of all of the issued and outstanding capital stock of Atlantic Southeast and recorded an intangible asset of approximately $33.7 million relating to the acquisition. The intangible asset is being amortized over fifteen years under the straight-line method. As of December 31, 2013 and 2012, the Company had $18.7 million and $16.5 million in accumulated amortization expense, respectively. Factors indicating potential impairment include, but are not limited to, significant decreases in the market value of the long-lived assets, a significant change in the condition of the long-lived assets and operating cash flow losses associated with the use of the long-lived assets. On a periodic basis, the Company evaluates whether impairment indicators are present. When considering whether or not impairment of long-lived assets exists, we group similar assets together at the lowest level for which identifiable cash flows are largely independent of the cash flows of other assets and liabilities and compare the undiscounted cash flows for each asset group to the net carrying amount of the assets supporting the asset group. Asset groupings are done at the fleet or contract level. The Company did not recognize any impairments of long-lived assets during 2013, 2012, or 2011.

Capitalized Interest

        Interest is capitalized on aircraft purchase deposits as a portion of the cost of the asset and is depreciated over the estimated useful life of the asset. During the years ended December 31, 2013, 2012 and 2011, the Company capitalized interest costs of approximately $1.2 million, $0, and $0, respectively.

Maintenance

        The Company operates under an FAA-approved continuous inspection and maintenance program. The Company uses the direct expense method of accounting for its regional jet engine overhauls wherein the expense is recorded when the overhaul event occurs. The Company has an engine services

71

SKYWEST, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

DECEMBER 31, 2013

(1) Nature of Operations and Summary of Significant Accounting Policies (Continued)

agreement with a third party vendor to provide long-term engine services covering the scheduled and unscheduled repairs for certain of its Bombardier CRJ700 Regional Jets ("CRJ700s") and Embraer S.A. ("Embraer") ERJ145 regional jet ("ERJ 145") aircraft. Under the terms of the agreement, the Company pays a set dollar amount per engine hour flown on a monthly basis and the third party vendor will assume the responsibility to repair the engines at no additional cost to the Company, subject to certain specified exclusions. Maintenance costs under these contracts are recognized when the engine hour is flown pursuant to the terms of the contract. The Company uses the "deferral method" of accounting for its Embraer Brasilia EMB-120 turboprop aircraft ("Brasilia turboprop") engine overhauls wherein the overhaul costs are capitalized and depreciated to the next estimated overhaul event. The costs of maintenance for airframe and avionics components, landing gear and normal recurring maintenance are expensed as incurred. For leased aircraft, the Company is subject to lease return provisions that require a minimum portion of the "life" of an overhaul be remaining on the engine at the lease return date. For Brasilia turboprop engine overhauls related to leased aircraft to be returned, the Company adjusts the estimated useful lives of the final engine overhauls based on the shorter of the remaining useful life or the respective lease return dates.

Passenger and Ground Handling Revenues

        The Company recognizes passenger and ground handling revenues when the service is provided. Under the Company's contract and pro-rate flying agreements with Delta, United, US Airways, American and Alaska, revenue is considered earned when the flight is completed. Revenue is recognized under the Company's pro-rate flying agreements based upon the portion of the pro-rate passenger fare the Company anticipates that it will receive. Other ancillary revenues commonly associated with airlines such as baggage fee revenue, ticket change fee revenue and the marketing component of the sale of mileage credits are retained by the Company's major airline partners on flights that the Company operates under its code-share agreements.

        In the event that the contractual rates under the agreements have not been finalized at quarterly or annual financial statement dates, the Company records revenues based on the lower of prior period's approved rates, as adjusted to reflect any contract negotiations and the Company's estimate of rates that will be implemented in accordance with revenue recognition guidelines.

        In the event the Company has a reimbursement dispute with a major partner, the Company evaluates the dispute under its established revenue recognition criteria and, provided the revenue recognition criteria have been met, the Company recognizes revenue based on management's estimate of the resolution of the dispute.

        In several of the Company's agreements, the Company is eligible for incentive compensation upon the achievement of certain performance criteria. The incentives are defined in the agreements and are being measured and determined on a monthly, quarterly or semi-annual basis. At the end of period, the Company calculates the incentives achieved during that period and recognizes revenue accordingly.

72

SKYWEST, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

DECEMBER 31, 2013

(1) Nature of Operations and Summary of Significant Accounting Policies (Continued)

        The following summarizes the significant provision of each code share agreement the Company has with each major partner:

Delta Connection Agreements

Agreement	Number of aircraft under contract	Term / Termination Dates	Pass through costs or costs paid directly by major partner	Performance Incentive Structure	Payment Structure
SkyWest Airlines Delta Connection Agreement	• CRJ 200 - 41 • CRJ700 - 19 • CRJ 900 - 32	• The contract expires on an individual aircraft basis beginning in 2014 • The final aircraft expires in 2022 • The average remaining term of the aircraft under contract is 5.8 years • Upon expiration, aircraft may be renewed or extended	• Fuel • Engine Maintenance • Landing fees, Station Rents, Deice • Insurance	• No financial performance based incentives	• Rate per block hour, per departure and per aircraft under contract
ExpressJet Delta Connection Agreement	• CRJ 200 - 76 • CRJ700 - 41 • CRJ 900 - 28	• The contract expires on an individual aircraft basis beginning in 2014 • The final aircraft expires in 2022 • The average remaining term of the aircraft under contract is 4.4 years • Upon expiration, aircraft may be renewed or extended	• Fuel • Engine Maintenance • Landing fees, Station Rents, Deice Insurance	• Performance based financial incentives	• Rate per block hour, per departure and per aircraft under contract
SkyWest Airlines Prorate Agreement	• EMB 120 - 9 • CRJ200 - 8	• Terminate with 120 days notice	• None	• None	• Pro-rata sharing of the passenger fare revenue

SkyWest Airlines and ExpressJet are each parties to a Delta Connection Agreement with Delta, pursuant to which SkyWest Airlines and ExpressJet provide contract flight services for Delta. The SkyWest Airlines and ExpressJet Delta Connection Agreements contain multi-year rate reset provisions beginning in 2010 and continuing each 5th year thereafter. The Delta Connection Agreements also provide that, beginning with the fifth anniversary of the execution of the agreements (September 8, 2010), Delta has the right to require that certain contractual rates under those agreements shall not exceed the second lowest of all carriers within the Delta Connection program. During the fourth quarter of 2010, SkyWest Airlines and ExpressJet reached an agreement with Delta on contractual rates satisfying the 2010 rate reset provision and the second-lowest rate provision and agreed to rates through December 31, 2015. Delta additionally waived its right to require that the contractual rates payable under the Delta Connection Agreements shall not exceed the second-lowest rates of all carriers within the Delta Connection program through December 31, 2015.

73

SKYWEST, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

DECEMBER 31, 2013

(1) Nature of Operations and Summary of Significant Accounting Policies (Continued)

United Express Agreements

Agreement	Number of aircraft under contract	Term / Termination Dates	Pass through costs or costs paid directly by major partner	Performance Incentive Structure	Payment Structure
SkyWest Airlines United Express Agreement	• CRJ 200 - 61 • CRJ700 - 70 • EMB 120 - 9	• The contract expires on an individual aircraft basis beginning in 2014 • The final aircraft expires in 2024 • The average remaining term of the aircraft under contract is 3.8 years • Upon expiration, aircraft may be renewed or extended	• Fuel • Landing fees, Station Rents, Deice • Insurance	• Performance based incentives	• Rate per block hour, per departure and per aircraft under contract
Atlantic Southeast United Express Agreement	• CRJ 200 - 14	• Terminates 2015 • Upon expiration, aircraft may be renewed or extended	• Fuel • Landing fees, Station Rents, Deice • Insurance	• Performance based incentives	• Rate per block hour, per departure and per aircraft under contract
ExpressJet Delaware United Express Agreement	• EMB 145 - 22	• Terminates 2015 • Upon expiration, aircraft may be renewed or extended	• Fuel • Landing fees, Station Rents, Deice • Insurance	• Performance based incentives	• Rate per block hour, per departure and per aircraft under contract
ExpressJet Delaware United Express Agreement	• EMB 135 - 9 • EMB 145 - 220	• The contract expires on an individual aircraft basis beginning in 2014 • The final aircraft expires in 2020 • The average remaining term of the aircraft under contract is 4.3 years • Upon expiration, aircraft may be renewed or extended	• Fuel • Engine Maintenance • Landing fees, Station Rents, Deice • Insurance	• Performance based incentives or penalties	• Rate per block hour, per departure and per aircraft under contract
SkyWest Airlines United Express Prorate Agreement	• CRJ200 - 17 • EMB 120 - 27	• Terminate with 120 days notice	• None	• None	• Pro-rata sharing of the passenger fare revenue

74

SKYWEST, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

DECEMBER 31, 2013

(1) Nature of Operations and Summary of Significant Accounting Policies (Continued)

Alaska Capacity Purchase Agreement

Agreement	Number of aircraft under contract	Term / Termination Dates	Pass through costs or costs paid directly by major partner	Incentive Structure	Payment Structure
SkyWest Airlines Capacity Purchase Agreement	• CRJ 700 - 7	• Terminates 2018 • Upon expiration, aircraft may be renewed or extended	• Fuel • Landing fees, Station Rents, Deice • Insurance	• Performance based incentives	• Rate per block hour, per departure and per aircraft under contract

US Airways Express Agreement

Agreement	Number of aircraft under contract	Term / Termination Dates	Pass through costs or costs paid directly by major partner	Incentive Structure	Payment Structure
SkyWest Airlines US Airways Express Agreement	• CRJ200 - 10 • CRJ900 - 4	• Terminates 2015 • Upon expiration, aircraft may be renewed or extended	• Fuel • Landing fees, Station Rents, Deice • Insurance	• Performance based incentives	• Rate per block hour, per departure and per aircraft under contract
SkyWest Airlines US Airways Express Prorate Agreement	• CRJ200 - 1	• Terminate with 120 days notice	• None	• None	• Pro-rata sharing of the passenger fare revenue

American Agreement

Agreement	Number of aircraft under contract	Term / Termination Dates	Pass through costs or costs paid directly by major partner	Incentive Structure	Payment Structure
SkyWest Airlines American Capacity Purchase Agreement	• CRJ200 - 12	• Terminate 2016 • Upon expiration, aircraft may be renewed or extended	• Fuel • Landing fees, Station Rents, Deice • Insurance	• Performance based incentives	• Rate per block hour, per departure and per aircraft under contract
ExpressJet American Capacity Purchase Agreement	• CRJ200 - 11	• Terminates 2017 • Upon expiration, aircraft may be renewed or extended	• Fuel • Landing fees, Station Rents, Deice • Insurance	• Performance based incentives	• Rate per block hour, per departure and per aircraft under contract

Other Revenue Items

        The Company's passenger and ground handling revenues could be impacted by a number of factors, including changes to the Company's code-share agreements with Delta, United, Alaska, American or US Airways, contract modifications resulting from contract re-negotiations, the Company's ability to earn incentive payments contemplated under the Company's code-share agreements and settlement of reimbursement disputes with the Company's major partners.

75

SKYWEST, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

DECEMBER 31, 2013

(1) Nature of Operations and Summary of Significant Accounting Policies (Continued)

        Under the Company's code-share agreements with Delta, United, Alaska, US Airways and American, the compensation structure generally consists of a combination of agreed-upon rates for operating flights and direct reimbursement for other certain costs associated with operating the aircraft. A portion of the Company's contract flying compensation is designed to reimburse the Company for certain aircraft ownership costs. The Company has concluded that a component of its revenue under these agreements is rental income, inasmuch as the agreements identify the "right of use" of a specific type and number of aircraft over a stated period of time. The amounts deemed to be rental income under the agreements for the years ended December 31, 2013, 2012 and 2011 were $500.2 million, $506.7 million and $521.3 million, respectively. These amounts were recorded as passenger revenue on the Company's consolidated statements of operations. The Company has not separately stated aircraft rental income and aircraft rental expense in the consolidated statement of comprehensive income (loss) since the use of the aircraft is not a separate activity of the total service provided and there is not a separate profitability measurement for the deemed rental activity of the aircraft.

Deferred Aircraft Credits

        The Company accounts for incentives provided by aircraft manufacturers as deferred credits. The deferred credits related to leased aircraft are amortized on a straight-line basis as a reduction to rent expense over the lease term. Credits related to owned aircraft reduce the purchase price of the aircraft, which has the effect of amortizing the credits on a straight-line basis as a reduction in depreciation expense over the life of the related aircraft. The incentives are credits that may be used to purchase spare parts and pay for training and other expenses.

Income Taxes

        The Company recognizes a liability or asset for the deferred tax consequences of all temporary differences between the tax basis of assets and liabilities and their reported amounts in the consolidated financial statements that will result in taxable or deductible amounts in future years when the reported amounts of the assets and liabilities are recovered or settled.

Net Income (Loss) Per Common Share

        Basic net income (loss) per common share ("Basic EPS") excludes dilution and is computed by dividing net income (loss) by the weighted average number of common shares outstanding during the period. Diluted net income (loss) per common share ("Diluted EPS") reflects the potential dilution that could occur if stock options or other contracts to issue common stock were exercised or converted into common stock. The computation of Diluted EPS does not assume exercise or conversion of securities that would have an anti-dilutive effect on net income (loss) per common share. During the years ended December 31, 2013, 2012 and 2011, 3,072,000, 3,889,000 and 4,323,000 shares reserved for issuance upon the exercise of outstanding options were excluded from the computation of Diluted EPS respectively, as their inclusion would be anti-dilutive.

76

SKYWEST, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

DECEMBER 31, 2013

(1) Nature of Operations and Summary of Significant Accounting Policies (Continued)

        The calculation of the weighted average number of common shares outstanding for Basic EPS and Diluted EPS are as follows for the years ended December 31, 2013, 2012and 2011 (in thousands):

	Year Ended December 31,
	2013		2012		2011
Numerator:
Net Income (Loss)	$	58,956	$	51,157	$	(27,335	)
Denominator:
Denominator for basic earnings per-share weighted average shares		51,688		51,090		52,201
Dilution due to stock options and restricted stock		734		656		—
Denominator for diluted earnings per-share weighted average shares		52,422		51,746		52,201
Basic earnings (loss) per-share	$	1.14	$	1.00	$	(0.52	)
Diluted earnings (loss) per-share	$	1.12	$	0.99	$	(0.52	)

Comprehensive Income (Loss)

        Comprehensive income (loss) includes charges and credits to stockholders' equity that are not the result of transactions with the Company's shareholders. Also, comprehensive income (loss) consisted of net income (loss) plus changes in unrealized appreciation (depreciation) on marketable securities and unrealized gain (loss) on foreign currency translation adjustment related to the Company's equity investment in Trip Linhas Aereas, a regional airline operating in Brazil ("Trip") and Mekong Aviation Joint Stock Company, an airline operating in Vietnam ("Air Mekong") (see note 8), net of tax, for the periods indicated (in thousands):

	Year Ended December 31,
	2013			2012			2011
Net Income (Loss)	$	58,956			51,157		$	(27,335	)
Proportionate share of other companies foreign currency translation adjustment, net of tax		66			(251	)		(295	)
Unrealized appreciation (depreciation) on marketable securities, net of tax		(13	)		316			534
Comprehensive income (loss)	$	59,009		$	51,222		$	(27,096	)

Fair Value of Financial Instruments

        The carrying amounts reported in the consolidated balance sheets for receivables and accounts payable approximate fair values because of the immediate or short-term maturity of these financial instruments. Marketable securities are reported at fair value based on market quoted prices in the consolidated balance sheets. If quoted prices in active markets are no longer available and the Company has estimated the fair values of these securities utilizing a discounted cash flow analysis as of December 31, 2013. These analyses consider, among other items, the collateralization underlying the

77

SKYWEST, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

DECEMBER 31, 2013

(1) Nature of Operations and Summary of Significant Accounting Policies (Continued)

security investments, the creditworthiness of the counterparty, the timing of expected future cash flows, and the expectation of the next time the security is expected to have a successful auction. The fair value of the Company's long-term debt is estimated based on current rates offered to the Company for similar debt and was approximately $1,509.2 million as of December 31, 2013, as compared to the carrying amount of $1,470.6 million as of December 31, 2013. The Company's fair value of long-term debt as of December 31, 2012 was $1,744.2 million as compared to the carrying amount of $1,642.0 million as of December 31, 2012.

Segment Reporting

        Generally accepted accounting principles require disclosures related to components of a company for which separate financial information is available to, and regularly evaluated by, the Company's chief operating decision maker when deciding how to allocate resources and in assessing performance. The Company's two operating segments consist of the operations conducted by its two subsidiaries, SkyWest Airlines and ExpressJet. Information pertaining to the Company's reportable segments is presented in Note 2, Segment Reporting.

(2) Segment Reporting

        Generally accepted accounting principles require disclosures related to components of a company for which separate financial information is available to, and regularly evaluated by, the Company's chief operating decision maker ("CODM") when deciding how to allocate resources and in assessing performance.

        The Company's two operating segments consist of the operations conducted by its two subsidiaries, SkyWest Airlines and ExpressJet. On December 31, 2011, ExpressJet Delaware and Atlantic Southeast merged through the ExpressJet Combination. As a result of the ExpressJet Combination, ExpressJet became a reportable segment. Prior year amounts have been revised to conform to the current year segment presentation. The results of operation of ExpressJet Delaware and Atlantic Southeast for periods prior to the ExpressJet Combination are combined under the ExpressJet segment. Corporate overhead expense incurred by the Company is allocated to the operating expenses of its two operating subsidiaries.

78

SKYWEST, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

DECEMBER 31, 2013

(2) Segment Reporting (Continued)

        The following represents the Company's segment data for the years ended December 31, 2013, 2012 and 2011 (in thousands).

	Year ended December 31, 2013
	SkyWest Airlines		ExpressJet			Other			Consolidated
Operating revenues		1,827,568		1,466,341			3,816			3,297,725
Operating expense		1,644,129		1,494,302			6,183			3,144,614
Depreciation and amortization expense		155,667		89,338			—			245,005
Interest expense		43,920		21,034			3,704			68,658
Segment profit (loss)(1)		139,519		(48,995	)		(6,071	)		84,453
Identifiable intangible assets, other than goodwill		—		14,998			—			14,998
Total assets		2,532,431		1,700,788			—			4,233,219
Capital expenditures (including non-cash)		103,387		38,657			—			142,044

	Year ended December 31, 2012
	SkyWest Airlines		ExpressJet			Other		Consolidated
Operating revenues		1,930,149		1,593,527			10,696		3,534,372
Operating expense		1,774,876		1,588,400			5,109		3,368,385
Depreciation and amortization expense		153,915		98,043			—		251,958
Interest expense		49,208		23,582			4,590		77,380
Segment profit(1)		106,065		(18,455	)		997		88,607
Identifiable intangible assets, other than goodwill		—		17,248			—		17,248
Total assets		2,633,369		1,621,268			—		4,254,637
Capital expenditures (including non-cash)		74,636		20,204			—		94,840

	Year ended December 31, 2011
	SkyWest Airlines		ExpressJet			Other		Consolidated
Operating revenues		2,002,830		1,640,837			11,256		3,654,923
Operating expense		1,893,909		1,714,481			5,428		3,613,818
Depreciation and amortization expense		147,520		106,662			—		254,182
Interest expense		50,907		25,142			4,334		80,383
Segment profit(1)		58,014		(98,786	)		1,494		(39,278	)
Identifiable intangible assets, other than goodwill		—		19,497			—		19,497
Total assets		2,595,901		1,686,007			—		4,281,908
Capital expenditures (including non-cash)		166,998		32,758			—		199,756

(1)

Segment profit is operating income less interest expense

79

SKYWEST, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

DECEMBER 31, 2013

(3) Long-term Debt

        Long-term debt consisted of the following as of December 31, 2013 and 2012 (in thousands):

	December 31, 2013			December 31, 2012
Notes payable to banks, due in semi-annual installments, variable interest based on LIBOR, or with interest rates ranging from 1.34% to 2.55% through 2014 to 2020, secured by aircraft	$	224,915		$	273,515
Notes payable to a financing company, due in semi-annual installments, variable interest based on LIBOR, or with interest rates ranging from 0.70% to 2.36% through 2014 to 2021, secured by aircraft		392,660			434,716
Notes payable to banks, due in semi-annual installments plus interest at 6.06% to 7.18% through 2021, secured by aircraft		149,477			168,937
Notes payable to a financing company, due in semi-annual installments plus interest at 5.78% to 6.23% through 2019, secured by aircraft		32,528			39,548
Notes payable to banks, due in monthly installments plus interest of 3.15% to 8.18% through 2025, secured by aircraft		623,315			665,867
Notes payable to banks, due in semi-annual installments, plus interest at 6.05% through 2020, secured by aircraft		15,740			17,872
Notes payable to a bank, due in monthly installments interest based on LIBOR plus interest at 2.00% to 4.00% through 2016, secured by aircraft		31,933			41,567
Long-term debt		1,470,568			1,642,022
Less current maturities		(177,389	)		(171,454	)
Long-term debt, net of current maturities		1,293,179			1,470,568

        As of December 31, 2013, the Company had $1.5 billion of long-term debt obligations related to the acquisition of CRJ200, CRJ700 and CRJ900 aircraft. The average effective interest rate on the debt related to the CRJ aircraft was approximately 4.5% at December 31, 2013.

        The aggregate amounts of principal maturities of long-term debt as of December 31, 2013 were as follows (in thousands):

2014	177,389
2015	184,510
2016	188,240
2017	161,735
2018	139,020
Thereafter	619,674
	1,470,568

        As of December 31, 2013 and 2012, SkyWest Airlines had a $25 million line of credit. As of December 31, 2013 and 2012, SkyWest Airlines had no amount outstanding under the facility. The facility expires on March 31, 2014 and has a variable interest rate of Libor plus 3.0%.

        As of December 31, 2013, the Company had $88.5 million in letters of credit and surety bonds outstanding with various banks and surety institutions.

        As of December 31, 2013, the Company was in compliance with all debt covenants to which it was subject.

80

SKYWEST, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

DECEMBER 31, 2013

(4) Income Taxes

        The provision for income taxes includes the following components (in thousands):

	Year ended December 31,
	2013		2012		2011
Current tax provision (benefit):
Federal	$	1,767	$	—	$	—
State		343		441		396
		2,110		441		396
Deferred tax provision (benefit):
Federal		34,728		31,791		(21,533	)
State		2,738		2,507		(1,698	)
		37,466		34,298		(23,231	)
Provision (benefit) for income taxes		39,576		34,739		(22,835	)

        The following is a reconciliation between the statutory Federal income tax rate of 35% and the effective rate which is derived by dividing the provision (benefit) for income taxes by income (loss) before for income taxes adjusted for permanent differences (in thousands):

	Year ended December 31,
	2013			2012			2011
Computed "expected" provision (benefit) for income taxes at the statutory rates adjusted for permanent differences	$	37,743		$	32,983		$	(14,683	)
Increase (decrease) in income taxes resulting from:
Purchase accounting (gain) adjustment		—			—			1,999
State income tax provision (benefit), net of Federal income tax benefit		2,867			2,220			(1,810	)
Valuation allowance changes affecting the provision for income taxes		1,430			1,614			—
Other, net		(2,464	)		(2,078	)		(8,341	)
Provision (benefit) for income taxes		39,576			34,739			(22,835	)

        For the years ended December 31, 2013 and 2012, the Company recorded a $1.4 million and $1.6 million valuation allowance against certain deferred tax assets associated with capital losses with a limited carryforward period, respectively. The Company anticipates the carryforward period will lapse prior to utilization of the deferred tax assets.

81

SKYWEST, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

DECEMBER 31, 2013

(4) Income Taxes (Continued)

        The significant components of the net deferred tax assets and liabilities are as follows (in thousands):

	As of December 31,
	2013			2012
Deferred tax assets:
Intangible Asset	$	36,164		$	37,031
Accrued benefits		40,850			40,469
Net operating loss carryforward		85,885			118,448
AMT credit carryforward		17,649			15,882
Deferred aircraft credits		44,350			48,124
Accrued reserves and other		30,987			31,846
Total deferred tax assets		255,885			291,800
Valuation allowance		(3,044	)		(1,614	)
Deferred tax liabilities:
Accelerated depreciation		(824,149	)		(823,487	)
Total deferred tax liabilities		(824,149	)		(823,487	)
Net deferred tax liability		(571,308	)		(533,301	)

        The Company's deferred tax liabilities were primarily generated through an accelerated bonus depreciation on newly purchased aircraft and support equipment in accordance with IRS Section 168(k) in combination with shorter depreciable tax lives.

        The Company's valuation allowance is related to certain deferred tax assets with a limited carry-forward period. The Company does not anticipate utilizing these deferred tax assets prior to the lapse of the carry-forward period.

        At December 31, 2013, the Company had federal net operating losses of approximately $191.5 million and state net operating losses of approximately $651.2 million, which will start to expire in 2026 and 2014, respectively. As of December 31, 2013, the Company also had an alternative minimum tax credit of approximately $17.6 million which does not expire.

        In conjunction with the ExpressJet Merger, the Company acquired non-amortizable intangible tax assets and other tax assets that are not anticipated to provide a tax benefit until 2027 or later due to statutory limitations. Because of the uncertainty associated with the realization of those tax assets, the Company had a full valuation allowance of approximately $69.8 million on such tax assets as of December 31, 2013 and $73.0 million as of December 31, 2012. The Company also has a valuation allowance against deferred tax assets of approximately $1 million for net operating losses in states with short carry-forward periods. The deferred tax assets in the table above are shown net of these valuation allowances.

82

SKYWEST, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

DECEMBER 31, 2013

(5) Commitments and Contingencies

Lease Obligations

        The Company leases 570 aircraft, as well as airport facilities, office space, and various other property and equipment under non-cancelable operating leases which are generally on a long-term net rent basis where the Company pays taxes, maintenance, insurance and certain other operating expenses applicable to the leased property. The following table summarizes future minimum rental payments required under operating leases that have initial or remaining non-cancelable lease terms in excess of one year as of December 31, 2013 (in thousands):

Year ending December 31,
2014	380,413
2015	331,151
2016	258,464
2017	194,258
2018	153,294
Thereafter	571,783
	1,889,363

        The majority of the Company's leased aircraft are owned and leased through trusts whose sole purpose is to purchase, finance and lease these aircraft to the Company; therefore, they meet the criteria of a variable interest entity. However, since these are single owner trusts in which the Company does not participate, the Company is not considered at risk for losses and is not considered the primary beneficiary. As a result, based on the current rules, the Company is not required to consolidate any of these trusts or any other entities in applying the accounting guidance. The Company's management believes that the Company's maximum exposure under these leases is the remaining lease payments.

        Total rental expense for non-cancelable aircraft operating leases was approximately $325.4 million, $333.6 million and $346.5 million for the years ended December 31, 2013, 2012 and 2011, respectively. The minimum rental expense for airport station rents was approximately $35.1 million, $43.5 million and $42.6 million for the years ended December 31, 2013, 2012 and 2011, respectively.

        The Company's leveraged lease agreements typically obligate the Company to indemnify the equity/owner participant against liabilities that may arise due to changes in benefits from tax ownership of the respective leased aircraft. The terms of these contracts range up to 12 years. The Company did not accrue any liability relating to the indemnification to the equity/owner participant because of management's assessment that the probability of this occurring is remote.

Self-insurance

        The Company self-insures a portion of its potential losses from claims related to workers' compensation, environmental issues, property damage, medical insurance for employees and general liability. Losses are accrued based on an estimate of the ultimate aggregate liability for claims incurred, using standard industry practices and the Company's actual experience. Actual results could differ from these estimates.

83

SKYWEST, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

DECEMBER 31, 2013

(5) Commitments and Contingencies (Continued)

Legal Matters

        The Company is subject to certain legal actions which it considers routine to its business activities. As of December 31, 2013, management believed, after consultation with legal counsel, that the ultimate outcome of such legal matters was not likely to have a material adverse effect on the Company's financial position, liquidity or results of operations. However, the following is a significant outstanding legal matter.

SkyWest Airlines and ExpressJet v. Delta

        During the quarter ended December 31, 2007, Delta notified the Company, SkyWest Airlines and Atlantic Southeast, of a dispute under the Delta Connection Agreements executed by Delta with SkyWest Airlines and Atlantic Southeast. The dispute relates to the allocation of liability for certain irregular operation ("IROP") expenses paid by SkyWest Airlines and Atlantic Southeast to their passengers and vendors under certain situations. During the period between the execution of the Delta Connection Agreements in September 2005 and December 2007, SkyWest Airlines and Atlantic Southeast passed through to Delta IROP expenses that were paid pursuant to Delta's policies, and Delta accepted and reimbursed those expenses. Delta now claims it is obligated to reimburse only a fraction of those IROP expenses. As a result, Delta withheld a combined total of approximately $25 million (pre-tax) from one of the weekly scheduled wire payments to SkyWest Airlines and Atlantic Southeast during December 2007. Since December 2007, Delta has continued to withhold payments from the weekly scheduled wire payments to SkyWest Airlines and Atlantic Southeast (now ExpressJet), and has disputed subsequent billings for IROP expenses. On February 1, 2008, SkyWest Airlines and Atlantic Southeast filed a Complaint in the Superior Court for Fulton County, Georgia ("Superior Court") challenging Delta's treatment of the matter and seeking recovery of the payments withheld by Delta and any future withholdings related to this issue. Delta filed an Answer to the SkyWest Airlines and Atlantic Southeast Complaint and a Counterclaim against SkyWest Airlines and Atlantic Southeast on March 24, 2008. Delta's Counterclaim alleged that SkyWest Airlines and Atlantic Southeast breached the Delta Connection Agreements by invoicing Delta for IROP expenses that were paid pursuant to Delta's policies, and claims only a portion of those expenses may be invoiced to Delta. Since July 1, 2008, the Company has not recognized revenue related to IROP expense reimbursements withheld by Delta because collection of those reimbursements is the subject of litigation and is not reasonably assured. As of December 31, 2013, the Company had recognized a cumulative total of $31.7 million of revenue associated with the funds withheld by Delta prior to July 1, 2008.

        During 2010, the Company and Delta began preliminary settlement discussions related to the IROP dispute. Notwithstanding the legal merits of the case, the Company offered to settle the claim for approximately $5.9 million less than the cumulative total of revenue recognized related to this matter. Those settlement discussions were not successful; however, as a result of the settlement offer, the Company wrote off $5.9 million of related receivables as of December 31, 2013.

        After proceedings that included contested motions, document discovery, and depositions, Delta voluntarily dismissed its Counterclaim. Discovery in that action was not complete at the time of dismissal. On February 14, 2011, SkyWest Airlines and Atlantic Southeast voluntarily dismissed their claims in the Superior Court, and filed a new complaint (the "State Court Complaint") in the Georgia State Court of Fulton County (the "State Court"). The claims continue to include breach of contract,

84

SKYWEST, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

DECEMBER 31, 2013

(5) Commitments and Contingencies (Continued)

breach of contract based on mutual departure, breach of contract based on voluntary payment, and breach of the duty of good faith and fair dealing. Delta moved for partial dismissal of the State Court Complaint, which motion was denied in its entirety.

        Discovery in the State Court lawsuit has concluded. On July 19, 2013, the parties filed cross motions for partial summary judgment. SkyWest Airlines and ExpressJet filed a motion for partial summary judgment on their claim for voluntary payment. Delta filed a motion for partial summary judgment on all of SkyWest's and ExpressJet's claims, for partial summary judgment on the issue of damages, and for spoliation sanctions. Briefing of the cross motions is complete, but no hearing has been scheduled by the Court. SkyWest and ExpressJet intend to oppose Delta's motions and continue to vigorously pursue their claims set forth in the State Court Complaint.

        As of December 31, 2013, the Company's estimated range of reasonably possible loss related to the dispute was $0 to $25.8 million.

Concentration Risk and Significant Customers

        The Company requires no collateral from its major partners or customers but monitors the financial condition of its major partners. The Company maintains an allowance for doubtful accounts receivable based upon expected collectability of all accounts receivable. The Company's allowance for doubtful accounts totaled $94,000 and $94,000 as of December 31, 2013 and 2012, respectively. For the years ended December 31, 2013, 2012 and 2011, the Company's contractual relationships with Delta and United combined accounted for approximately 91.6%, 94.8% and 97.6%, respectively of the Company's total revenues.

Employees Under Collective Bargaining Agreements

        As of December 31, 2013, the Company had 18,358 full-time equivalent employees. Approximately 49% of these employees were represented by unions, including the following employee groups. Notwithstanding the completion of the ExpressJet Combination, ExpressJet's employee groups continue to be represented by those unions who provided representation prior to the ExpressJet Combination.

85

SKYWEST, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

DECEMBER 31, 2013

(5) Commitments and Contingencies (Continued)

        Accordingly, the following table refers to ExpressJet's employee groups based upon their union affiliations prior to the ExpressJet Combination.

Employee Group	Approximate Number of Active Employees Represented		Representatives	Status of Agreement
Atlantic Southeast Pilots		1,800	Air Line Pilots Association International	Amendable
Atlantic Southeast Flight Attendants		1,075	International Association of Machinists and Aerospace Workers	Amendable
Atlantic Southeast Flight Controllers		60	Transport Workers Union of America	Amendable
Atlantic Southeast Mechanics		700	International Brotherhood of Teamsters	Amendable
Atlantic Southeast Stock Clerks		70	International Brotherhood of Teamsters	Amendable
ExpressJet Delaware Pilots		2,900	Air Line Pilots Association International	Amendable
ExpressJet Delaware Flight Attendants		1,200	International Association of Machinists and Aerospace Workers	Amendable
ExpressJet Delaware Mechanics		1,000	International Brotherhood of Teamsters	Amendable
ExpressJet Delaware Dispatchers		85	Transport Workers Union of America	Amendable
ExpressJet Delaware Stock Clerks		100	International Brotherhood of Teamsters	Amendable

        During December 2013, the Airline Pilots Association International ("ALPA"), which represents the Atlantic Southeast pilot and ExpressJet Delaware pilot groups, conducted a vote of the two employee groups, seeking approval of a joint collective bargaining agreement that ExpressJet had negotiated with ALPA representatives. The two employee groups rejected the joint collective bargaining agreement, which resulted in the agreements with those employee groups remaining amendable as indicated in the foregoing table. The decision of those employee groups to reject the joint collective bargaining agreement will preclude us from realizing some of the savings we had hoped to achieve through the ExpressJet Combination. ExpressJet intends to resume negotiations with ALPA in an effort to negotiate an acceptable agreement.

(6) Fair Value Measurements

        The Company holds certain assets that are required to be measured at fair value in accordance with United States GAAP. The Company determined fair value of these assets based on the following three levels of inputs:

Level 1—Quoted prices in active markets for identical assets or liabilities.

Level 2—Observable inputs other than Level 1 prices such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities. Some of the Company's marketable securities primarily utilize broker quotes in a non-active market for valuation of these securities.

Level 3—Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities, therefore requiring an entity to develop its own assumptions.

86

SKYWEST, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

DECEMBER 31, 2013

(6) Fair Value Measurements (Continued)

        As of December 31, 2013, the Company held certain assets that are required to be measured at fair value on a recurring basis. Assets measured at fair value on a recurring basis are summarized below (in thousands):

	Fair Value Measurements as of December 31, 2013
	Total		Level 1		Level 2		Level 3
Marketable Securities
Bonds	$	487,049	$	—	$	487,049	$	—
Asset backed securities		190		—		190		—
		487,239		—		487,239		—
Cash, Cash Equivalents and Restricted Cash	$	182,855		182,855		—		—
Other Assets(a)		2,245		—		—		2,245
Total Assets Measured at Fair Value	$	672,339	$	182,855	$	487,239	$	2,245

	Fair Value Measurements as of December 31, 2012
	Total		Level 1		Level 2		Level 3
Marketable Securities
Bonds	$	552,289	$	—	$	552,289	$	—
Commercial paper		3,514		—		3,514		—
Asset backed securities		314		—		314		—
		556,117		—		556,117		—
Cash, Cash Equivalents and Restricted Cash		153,325		153,325		—		—
Other Assets(a)		3,844		—		—		3,844
Total Assets Measured at Fair Value	$	713,286	$	153,325	$	556,117	$	3,844

(a)

Auction rate securities included in "Other assets" in the Consolidated Balance Sheet

        Based on market conditions, the Company uses a discounted cash flow valuation methodology for auction rate securities. Accordingly, for purposes of the foregoing consolidated financial statements, these securities were categorized as Level 3 securities. The Company's "Marketable Securities" classified as Level 2 primarily utilize broker quotes in a non-active market for valuation of these securities.

        No significant transfers between Level 1, Level 2 and Level 3 occurred during the year ended December 31, 2013. The Company's policy regarding the recording of transfers between levels is to record any such transfers at the end of the reporting period.

87

SKYWEST, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

DECEMBER 31, 2013

(6) Fair Value Measurements (Continued)

        The following table presents the Company's assets measured at fair value on a recurring basis using significant unobservable inputs (Level 3) at December 31, 2013 (in thousands):

Fair Value Measurements Using Significant Unobservable Inputs

(Level 3)

	Auction Rate Securities
Balance at January 1, 2013	$	3,844
Total realized and unrealized gains or (losses)
Included in earnings		—
Included in other comprehensive income		(71	)
Transferred out		—
Settlements		(1,528	)
Balance at December 31, 2013	$	2,245

(7) Investment in Other Companies

        In September 2008, the Company entered into an agreement to acquire a 20% interest in Trip Linhas Aereas, a regional airline operating in Brazil ("TRIP"). As of December 31, 2013, the Company's investment balance in TRIP was $19.1 million. In connection with the investment in TRIP, the Company entered into a put option agreement with the majority shareholder of TRIP that allowed the Company to put its investment to TRIP's majority shareholder at an established price based on a 5% annual rate of return over the investment period.

        On July 12, 2012, the Company sold its interest in TRIP for a price of $42 million. The purchase price is scheduled to be paid in three installments over a two-year period and may be accelerated upon the occurrence of certain conditions identified in the purchase agreement. As part of the sale transaction, the Company also received an option to acquire 15.38% of the ownership in Trip Investimentos Ltda., the purchaser of the Company's TRIP shares ("Trip Investimentos"). The option has an initial exercise price per share equal to the price paid by Trip Investimentos to acquire the TRIP shares from the Company. The exercise price escalates annually at a specified rate and the Company can exercise the option, at its discretion, between the second and fourth anniversaries of the Company's receipt of the final required installment payments from Trip Investimentos. Under the terms of the agreement, Trip Investmentos is prohibited from transferring the TRIP shares until all three installment payments have been made. The restriction on Trip Investimentos' ability to transfer the TRIP shares prevents the transaction from being recognized as a sale for financial reporting purposes. As a result, the Company intends to account for the transaction as a sale once all three installment payments have been made. The Company has no continuing involvement with the TRIP shares. As of December 31, 2013, the Company had received the first two installment payments totaling $26.2 million. These payments were recorded as an "Other Long-Term Liability" on the Company's consolidated balance sheet. The third installment payment is due July 12, 2014 for an amount of $16.8 million. The last installment payment and the option to purchase 15.38% of Trip Investimentos represent variable interests in TRIP Investimentos, which is a variable interest entity. The Company has no equity interest

88

SKYWEST, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

DECEMBER 31, 2013

(7) Investment in Other Companies (Continued)

and no control over Trip Investimentos, and therefore the Company does not consolidate the financial performance of Trip Investimentos in its financial statements.

        On September 29, 2010, the Company invested $7 million for a 30% ownership interest in Mekong Aviation Joint Stock Company, an airline operating in Vietnam ("Air Mekong"). During 2011, the Company invested an additional $3 million in Air Mekong. During the year ended December 31, 2013, the Company sold its shares of Air Mekong. In conjunction with the sale of its shares, the Company recognized a gain of $5.0 million, which is reflected in other income in the Consolidated Statements of Comprehensive Income.

        During the year ended December 31, 2013, the Company terminated its sub-lease with Air Mekong and recognized $5.1 million of other income primarily due to the recognition of contingent rent payments, net of the write-off of certain maintenance deposits. The contingent rent payments were collected and realized related to aircraft maintenance obligations and no are longer payable to Air Mekong as a result of the sub-lease termination.

(8) Capital Transactions

Preferred Stock

        The Company is authorized to issue 5,000,000 shares of preferred stock in one or more series without shareholder approval. No shares of preferred stock are presently outstanding. The Company's Board of Directors is authorized, without any further action by the shareholders of the Company, to (i) divide the preferred stock into series; (ii) designate each such series; (iii) fix and determine dividend rights; (iv) determine the price, terms and conditions on which shares of preferred stock may be redeemed; (v) determine the amount payable to holders of preferred stock in the event of voluntary or involuntary liquidation; (vi) determine any sinking fund provisions; and (vii) establish any conversion privileges.

Stock Compensation

        On May 4, 2010, the Company's shareholders approved the adoption of the SkyWest Inc. 2010 Long-Term Incentive Plan, which provides for the issuance of up to 5,150,000 shares of common stock to the Company's directors, employees, consultants and advisors (the "2010 Incentive Plan"). The 2010 Incentive Plan provides for awards in the form of options to acquire shares of common stock, stock appreciation rights, restricted stock grants, restricted stock units and performance awards. The 2010 Incentive Plan is administered by the Compensation Committee of the Company's Board of Directors (the "Compensation Committee") who is authorized to designate option grants as either incentive or non-statutory. Incentive stock options are granted at not less than 100% of the market value of the underlying common stock on the date of grant. Non-statutory stock options are granted at a price as determined by the Compensation Committee.

        In prior years, the Company adopted three stock option plans: the Executive Stock Incentive Plan (the "Executive Plan"), the 2001 Allshare Stock Option Plan (the "Allshare Plan") and SkyWest Inc. Long-Term Incentive Plan (the "2006 Incentive Plan"). However, as of December 31, 2013, options to purchase an aggregate of 2,613,415 shares of the Company's common stock remained outstanding

89

SKYWEST, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

DECEMBER 31, 2013

(8) Capital Transactions (Continued)

under the Executive Plan, the Allshare Plan and the 2006 Incentive Plan. There are no additional shares of common stock available for issuance under these plans.

        The fair value of stock options awarded under the Company's stock option plans has been estimated as of the grant date using the Black-Scholes option pricing model. The Company uses historical data to estimate option exercises and employee termination in the option pricing model. The expected term of options granted is derived from the output of the option pricing model and represents the period of time that options granted are expected to be outstanding. The expected volatilities are based on the historical volatility of the Company's traded stock and other factors. During the year ended December 31, 2013, the Company granted 173,560 stock options to employees under the 2010 Incentive Plan. The following table shows the assumptions used and weighted average fair value for grants in the years ended December 31, 2013, 2012 and 2011.

	2013			2012			2011
Expected annual dividend rate		1.21	%		1.23	%		1.04	%
Risk-free interest rate		0.92	%		0.81	%		2.08	%
Average expected life (years)		6.0			5.6			5.8
Expected volatility of common stock		0.446			0.409			0.404
Forfeiture rate		0.0	%		0.0	%		0.0	%
Weighted average fair value of option grants	$	5.04		$	4.43		$	5.74

        The Company recorded share-based compensation expense only for those options that are expected to vest. The estimated fair value of the stock options is amortized over the vesting period of the respective stock option grants.

        During the year ended December 31, 2013, the Company granted 282,651 shares of restricted stock units to the Company's employees under the 2010 Incentive Plan. The restricted stock has a three-year vesting period, during which the recipient must remain employed with the Company or its subsidiaries. The weighted average fair value of the restricted stock on the date of grants made during the year ended December 31, 2013 was $13.24 per share. Additionally, the Company granted 29,453 fully-vested shares of common stock to the Company's directors with a weighted average grant-date fair value of

90

SKYWEST, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

DECEMBER 31, 2013

(8) Capital Transactions (Continued)

$13.41. The following table summarizes the restricted stock activity as of December 31, 2013, 2012 and 2011:

	Number of Shares			Weighted-Average Grant-Date Fair Value
Non-vested shares outstanding at December 31, 2010		659,263			18.97
Granted		249,502			15.51
Vested		(238,848	)		25.80
Cancelled		(58,315	)		15.71
Non-vested shares outstanding at December 31, 2011		611,602			15.08
Granted		318,139			13.04
Vested		(212,841	)		14.95
Cancelled		(18,015	)		14.20
Non-vested shares outstanding at December 31, 2012		698,885			14.21
Granted		312,104			13.41
Vested		(231,465	)		14.35
Cancelled		(45,933	)		13.69
Non-vested shares outstanding at December 31, 2013		733,591			13.79

        During the year ended December 31, 2013, 2012 and 2011, the Company recorded equity-based compensation expense of $4.4 million, $4.7 million and $5.4 million, respectively.

        As of December 31, 2013, the Company had $4.9 million of total unrecognized compensation cost related to non-vested stock options and non-vested restricted stock grants. Total unrecognized compensation cost will be adjusted for future changes in estimated forfeitures. The Company expects to recognize this cost over a weighted average period of 1.7 years.

        Options are exercisable for a period as defined by the Compensation Committee on the date granted; however, no stock option will be exercisable before six months have elapsed from the date it is granted and no incentive stock option shall be exercisable after ten years from the date of grant. The

91

SKYWEST, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

DECEMBER 31, 2013

(8) Capital Transactions (Continued)

following table summarizes the stock option activity for all of the Company's plans for the years ended December 31, 2013, 2012 and 2011:

	2013									2012					2011
	Number of Options			Weighted Average Exercise Price		Weighted Average Remaining Contractual Term		Aggregate Intrinsic Value ($000)		Number of Options			Weighted Average Exercise Price		Number of Options			Weighted Average Exercise Price
Outstanding at beginning of year		3,653,859		$	18.44		2.3 years	$	—		4,176,673		$	19.26		4,586,979		$	19.96
Granted		173,560			13.24						200,115			13.06		327,617			15.45
Exercised		(75,080	)		10.91						(179,204	)		10.57		(5,941	)		10.57
Cancelled		(344,764	)		20.67						(543,725	)		25.35		(731,982	)		24.73
Outstanding at end of year		3,407,575			17.99		1.8 years		—		3,653,859			18.44		4,176,673			19.26
Exercisable at December 31, 2013		2,818,464			18.83		1.1 years		—
Exercisable at December 31, 2012		3,031,825			19.28		1.8 years		—

        The total intrinsic value of options to acquire shares of the Company's common stock that were exercised during the years ended December 31, 2013, 2012 and 2011 was $172,000, $191,000 and $31,000, respectively.

        The following table summarizes the status of the Company's non-vested stock options as of December 31, 2013:

	Number of Shares			Weighted-Average Grant-Date Fair Value
Non-vested shares at beginning of year		622,034		$	4.99
Granted		173,560			5.04
Vested		(206,483	)		4.78
Cancelled		—			—
Non-vested shares at end of year		589,111			5.07

        The following table summarizes information about the Company's stock options outstanding at December 31, 2013:

	Options Outstanding						Options Exercisable
Range of Exercise Prices	Number Outstanding		Weighted Average Remaining Contractual Life		Weighted Average Exercise Price		Number Exercisable		Weighted Average Exercise Price
$10 to $16		1,240,074		3.7 years	$	14.51		650,963	$	15.00
$17 to $21		1,593,980		0.8 years		17.72		1,593,980		17.72
$22 to $28		573,521		0.6 years		26.29		573,521		26.29
$10 to $28		3,407,575		1.8 years		17.99		2,818,464		18.83

92

SKYWEST, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

DECEMBER 31, 2013

(8) Capital Transactions (Continued)

Taxes

        A portion of the Company's granted options qualify as incentive stock options ("ISOs") for income tax purposes. As such, a tax benefit is not recorded at the time the compensation cost related to the options is recorded for book purposes due to the fact that an ISO does not ordinarily result in a tax benefit unless there is a disqualifying disposition. Stock option grants of non-qualified options result in the creation of a deferred tax asset, which is a temporary difference, until the time that the option is exercised. Due to the treatment of incentive stock options for tax purposes, the Company's effective tax rate from year to year is subject to variability.

(9) Retirement Plans and Employee Stock Purchase Plans

SkyWest Retirement Plan

        The Company sponsors the SkyWest, Inc. Employees' Retirement Plan (the "SkyWest Plan"). Employees who have completed 90 days of service and are at least 18 years of age are eligible for participation in the SkyWest Plan. Employees may elect to make contributions to the SkyWest Plan. The Company matches 100% of such contributions up to 2%, 4% or 6% of the individual participant's compensation, based upon length of service. Additionally, a discretionary contribution may be made by the Company. The Company's combined contributions to the SkyWest Plan were $18.3 million, $16.0 million and $14.4 million for the years ended December 31, 2013, 2012 and 2011, respectively.

ExpressJet and Atlantic Southeast Retirement Plan

        ExpressJet (formerly Atlantic Southeast) sponsors the Atlantic Southeast Airlines, Inc. Investment Savings Plan (the "Atlantic Southeast Plan"). Employees who have completed 90 days of service and are 18 years of age are eligible for participation in the Atlantic Southeast Plan. Employees may elect to make contributions to the Atlantic Southeast Plan; however, ExpressJet limits the amount of company match at 6% of each participant's total compensation, except for those with ten or more years of service whose company match is limited to 8% of total compensation. Additionally, ExpressJet matches the individual participant's contributions from 20% to 75%, depending on the length of the participant's service. Additionally, participants are 100% vested in their elective deferrals and rollover amounts and from 10% to 100% vested in company matching contributions based on length of service.

        Effective December 31, 2002, ExpressJet Delaware adopted the ExpressJet Airlines, Inc. 401(k) Savings Plan (the "ExpressJet Retirement Plan"). Substantially all of ExpressJet Delaware's domestic employees were covered by this plan at the time of the ExpressJet Combination. Effective January 1, 2009, the ExpressJet Retirement Plan was amended such that certain matching payment amounts have been reduced or eliminated depending on the terms of the collective bargaining unit or work group, as applicable.

        ExpressJet's contribution to the Atlantic Southeast and the ExpressJet Retirement Plans was $26.7 million, $26.4 million and $25.1 million for the years ended December 31, 2013, 2012 and 2011, respectively.

        ExpressJet Delaware also provided medical bridge coverage for employees between the ages of 60 to 65, with at least ten years of service who have retired from the Company. In December 2007, the

93

SKYWEST, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

DECEMBER 31, 2013

(9) Retirement Plans and Employee Stock Purchase Plans (Continued)

Fair Treatment for Experienced Pilots Act (H.R. 4343) was enacted. This law increased the mandatory retirement age of commercial pilots from 60 to 65. As a result of this legislation, ExpressJet is no longer required to provide medical bridge coverage to its pilots between the ages of 60 to 65. In 2008, ExpressJet Delaware's practice of providing medical bridge coverage for non-pilot employees was frozen, and does not permit non-pilot employees retiring on or after January 1, 2009 to participate in such coverage.

Employee Stock Purchase Plans

        In May 2009, the Company's Board of Directors approved the SkyWest, Inc. 2009 Employee Stock Purchase Plan (the "2009 Stock Purchase Plan"). All employees who have completed 90 days of employment with the Company or one of its subsidiaries are eligible to participate in the 2009 Stock Purchase Plan, except employees who own five percent or more of the Company's common stock. The 2009 Stock Purchase Plan enables employees to purchase shares of the Company's common stock at a five percent discount, through payroll deductions. Employees can contribute up to 15% of their base pay, not to exceed $21,250 each calendar year, for the purchase of shares. Shares are purchased semi-annually at a five percent discount based on the end of the period price. Employees can terminate their participation in the 2009 Stock Purchase Plan at any time upon written notice.

        The following table summarizes purchases made under the 2009 Employee Stock Purchase Plans during the years ended December 31, 2013, 2012 and 2011:

	Year Ended December 31,
	2013		2012		2011
Number of shares purchased		299,786		487,451		300,177
Average price of shares purchased	$	12.33	$	8.35	$	14.56

        The 2009 Stock Purchase Plan is a non-compensatory plan under the accounting guidance. Therefore, no compensation expense was recorded for the years ended December 31, 2013, 2012 and 2011.

(10) Stock Repurchase

        The Company's Board of Directors has authorized the repurchase of up to 25,000,000 shares of the Company's common stock in the public market since 2007. During the years ended December 31, 2013 and 2012, the Company repurchased 0.8 million and 0.1 million shares of common stock for approximately $11.7 million and $0.9 million, respectively at a weighted average price per share of $14.40 and $15.32, respectively. Effective September 14, 2012, the Company's Board of Directors adopted the SkyWest, Inc. 2012 Stock Repurchase Plan (the "Stock Repurchase Plan"), which provides for the repurchase of up to 6,514,266 shares of common stock, from time to time in open market or privately negotiated transactions, as contemplated by Rule 10b5-1 promulgated under the Exchange Act, as amended. The Stock Repurchase Plan expires on October 15, 2014.

94

SKYWEST, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

DECEMBER 31, 2013

(11) Related-Party Transactions

        The Company's President, Chairman of the Board and Chief Executive Officer, serves on the Board of Directors of Zions Bancorporation ("Zions"). The Company maintains a line of credit (see Note 3) and certain bank accounts with Zions. Zions is an equity participant in leveraged leases on three CRJ200, two CRJ700 and five Brasilia turboprop aircraft operated by the Company's subsidiaries. Zions also refinanced six CRJ200 and two CRJ700 aircraft in 2012 for terms of three to four years, becoming the debtor on these aircraft. Zions also serves as the Company's transfer agent. The Company's cash balance in the accounts held at Zions as of December 31, 2013 and 2012 was $81.8 million and $56.4 million, respectively.

(12) Quarterly Financial Data (Unaudited)

        Unaudited summarized financial data by quarter for 2013 and 2012 is as follows (in thousands, except per share data):

	Year Ended December 31, 2013
	First Quarter		Second Quarter		Third Quarter		Fourth Quarter		Year
Operating revenues	$	803,487	$	839,130	$	850,740	$	804,368	$	3,297,725
Operating income		15,561		50,555		56,174		30,820		153,111
Net income (loss)		3,233		20,720		26,394		8,609		58,956
Net income (loss) per common share:
Basic		0.06		0.40		0.51		0.17		1.14
Diluted		0.06		0.39		0.50		0.17		1.12
Weighted average common shares:
Basic:		51,763		51,881		51,881		51,228		51,688
Diluted:		52,497		52,547		52,610		52,034		52,422

	Year Ended December 31, 2012
	First Quarter			Second Quarter		Third Quarter		Fourth Quarter		Year
Operating revenues	$	921,173		$	937,214	$	865,259	$	810,726	$	3,534,372
Operating income		20,457			46,806		54,974		43,750		165,987
Net income (loss)		(682	)		16,960		20,933		13,946		51,157
Net income (loss) per common share:
Basic		(0.01	)		0.33		0.41		0.27		1.00
Diluted		(0.01	)		0.33		0.40		0.27		0.99
Weighted average common shares:
Basic:		50,881			50,944		51,241		51,296		51,090
Diluted:		50,881			51,789		52,153		52,161		51,746

95

ITEM 9.    CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND FINANCIAL DISCLOSURE

        None.

ITEM 9A.    CONTROLS AND PROCEDURES

Disclosure Controls and Procedures

        Our management, including our Chief Executive Officer and Chief Accounting Officer, performed an evaluation of our disclosure controls and procedures, which have been designed to ensure that information we are required to disclose in the reports we file or submit under the Exchange Act is recorded, processed, summarized and reported, within the time periods specified in the Commission rules and forms. Our Chief Accounting Officer performs functions that are substantially similar to the functions of a chief financial officer with respect to the oversight of our disclosure controls and procedures. Our management, including our Chief Executive Officer and Chief Accounting Officer, concluded that, as of December 31, 2013, those controls and procedures were effective to ensure that information we are required to disclose in the reports we file or submit under the Exchange Act is accumulated and communicated to our management, including our Chief Executive Officer and Chief Accounting Officer, as appropriate to allow timely decisions regarding required disclosure.

Changes in Internal Control

        During the three months ended December 31, 2013, we did not make any changes in our internal control over financial reporting that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

Management's Annual Report on Internal Control Over Financial Reporting

        Management is responsible for establishing and maintaining adequate internal control over financial reporting, as such term is defined in Rules13a-15(f) and 15d-15(f) under the Exchange Act. Our internal control over financial reporting is designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with accounting principles generally accepted in the United States of America.

        Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies may deteriorate.

        Management conducted an evaluation of the effectiveness of our internal control over financial reporting as of December 31, 2013 using the criteria issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO) in Internal Control—Integrated Framework. Based on that evaluation, management believes that our internal control over financial reporting was effective as of December 31, 2013.

        The effectiveness of our internal control over financial reporting as of December 31, 2013, has been audited by Ernst & Young LLP ("Ernst & Young"), the independent registered public accounting firm who also has audited our Consolidated Financial Statements included in this Report. Ernst & Young's report on our internal control over financial reporting appears on the following page.

96

Report of Independent Registered Public Accounting Firm

The Board of Directors and Stockholders
SkyWest, Inc.

        We have audited SkyWest, Inc. and subsidiaries' internal control over financial reporting as of December 31, 2013, based on criteria established in Internal Control—Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (the COSO criteria). SkyWest, Inc. and subsidiaries' management is responsible for maintaining effective internal control over financial reporting, and for its assessment of the effectiveness of internal control over financial reporting included in the accompanying Management's Annual Report on Internal Control over Financial Reporting. Our responsibility is to express an opinion on the company's internal control over financial reporting based on our audit.

        We conducted our audit in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects. Our audit included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, testing and evaluating the design and operating effectiveness of internal control based on the assessed risk, and performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.

        A company's internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company's internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company's assets that could have a material effect on the financial statements.

        Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

        In our opinion, SkyWest, Inc. and subsidiaries maintained, in all material respects, effective internal control over financial reporting as of December 31, 2013, based on the COSO criteria.

        We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the consolidated balance sheets of SkyWest, Inc. and subsidiaries as of December 31, 2013 and 2011, and the related consolidated statements of comprehensive income (loss), stockholders' equity, and cash flows for each of the three years in the period ended December 31, 2013 of SkyWest, Inc. and subsidiaries and our report dated February 14, 2014 expressed an unqualified opinion thereon.

/s/ Ernst & Young LLP

Salt Lake City, Utah
February 14, 2014

97

ITEM 9B.    OTHER INFORMATION

        None.

PART III

        Items 10, 11, 12, 13 and 14 in Part III of this Report are incorporated herein by reference to our definitive proxy statement for our 2014 Annual Meeting of Shareholders scheduled for May 6, 2014. We intend to file our definitive proxy statement with the SEC not later than 120 days after December 31, 2013, pursuant to Regulation 14A of the Exchange Act.

		Headings in Proxy Statement
ITEM 10.	DIRECTORS, EXECUTIVE OFFICERS AND CORPORATE GOVERNANCE	"Election of Directors," "Executive Officers," "Corporate Governance," "Meetings and Committees of the Board" and "Section 16(a) Beneficial Reporting Compliance"
ITEM 11.	EXECUTIVE COMPENSATION	"Corporate Governance," "Meetings and Committees of the Board," "Compensation Discussion and Analysis," "Compensation Committee Report," "Executive Compensation," "Director Compensation" and "Director Summary Compensation Table"
ITEM 12.	SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT AND RELATED STOCKHOLDER MATTERS	"Security Ownership of Certain Beneficial Owners"
ITEM 13.	CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS	"Certain Relationships and Related Transactions"
ITEM 14.	PRINCIPAL ACCOUNTANT FEES AND SERVICES	"Audit and Finance Committee Disclosure" and "Fees Paid to Independent Registered Public Accounting Firm"

PART IV

ITEM 15.    EXHIBITS AND FINANCIAL STATEMENT SCHEDULES

(a)

Documents Filed:

1.

Financial Statements: Reports of Independent Auditors, Consolidated Balance Sheets as of December 31, 2013 and 2012, Consolidated Statements of Comprehensive Income (Loss) for the years ended December 31, 2013, 2012 and 2011, Consolidated Statements of Cash Flows for the year ended December 31, 2013, 2012 and 2011, Consolidated Statements of Stockholders' Equity for the years ended December 31, 2013, 2012 and 2011 and Notes to Consolidated Financial Statements.

2.

Financial Statement Schedule. The following consolidated financial statement schedule of our company is included in this Item 15.

•

Report of independent auditors on financial statement schedule

•

Schedule II—Valuation and qualifying accounts

98

All other schedules for which provision is made in the applicable accounting regulations of the Commission are not required under the related instructions or are not applicable, and therefore have been omitted.

(b)

Exhibits

Number			Exhibit	Incorporated by Reference
	3.1		Restated Articles of Incorporation		(1)
	3.2		Amended and Restated Bylaws		(14)
	4.1		Specimen of Common Stock Certificate		(2)
	10.1		Amended and Restated Delta Connection Agreement, dated as of September 8, 2005, between SkyWest Airlines, Inc. and Delta Air Lines, Inc.		(3)
	10.2		Second Amended and Restated Delta Connection Agreement, dated as of September 8, 2005, between Atlantic Southeast Airlines, Inc. and Delta Air Lines, Inc.		(3)
	10.3		United Express Agreement dated July 31, 2003, between United Air Lines, Inc., and SkyWest Airlines, Inc.		(4)
	10.4		Stock Option Agreement dated January 28, 1987 between Delta Air Lines, Inc. and SkyWest, Inc.		(5)
	10.5		Lease Agreement dated December 1,1989 between Salt Lake City Corporation and SkyWest Airlines, Inc.		(6)
	10.6(a	)	Master Purchase Agreement dated November 7, 2000 between Bombardier, Inc. and SkyWest Airlines, Inc.		(7)
	10.6(b	)	Supplement to Master Purchase Agreement dated November 7, 2000 between Bombardier, Inc. and SkyWest Airlines, Inc.		(4)
	10.7		SkyWest, Inc. Amended and Combined Incentive and Non-Statutory Stock Option Plan		(8)
	10.8		SkyWest Inc. 2006 Employee Stock Purchase Plan		(9)
	10.8(a	)	First Amendment to SkyWest, Inc. 2006 Employee Stock Purchase Plan		(11)
	10.9		SkyWest Inc. Executive Stock Incentive Plan		(10)
	10.10		SkyWest Inc. 2001 Allshare Stock Option Plan		(10)
	10.12		SkyWest, Inc. 2002 Deferred Compensation Plan, as amended and restated effective January 1, 2008		(11)
	10.12(a	)	First Amendment to the Restated SkyWest, Inc. 2002 Deferred Compensation Plan		(11)
	10.13		SkyWest, Inc. 2006 Long-Term Incentive Plan		(11)
	10.13(a	)	First Amendment to the SkyWest, Inc. 2006 Long-Term Incentive Plan		(11)
	10.13(b	)	Second Amendment to the SkyWest, Inc. 2006 Long-Term Incentive Plan		(11)
	10.14		SkyWest, Inc. 2009 Employee Stock Purchase Plan		(11)
	10.15		Capacity Purchase Agreement, dated November 12, 2010, by and among ExpressJet Airlines, Inc. and Continental Airlines, Inc.		(12)

99

Number			Exhibit	Incorporated by Reference
	10.16		Aircraft Purchase Agreement, dated December 7, 2012, between Mitsubishi Aircraft Corporation and SkyWest Inc.			(13)
	10.17		Letter Agreement dated December 7, 2012, between Mitsubishi Aircraft Corporation and SkyWest, Inc.			(13)
	10.18		Purchase Agreement COM0028-13 between Embraer S.A. and SkyWest Inc. dated February 15, 2013			(15)
	10.19		Purchase Agreement COM0344-13 between Embraer S.A. and SkyWest Inc. dated June 17, 2013			(15)
	10.20		Form of Indemnification Agreement executed by and between SkyWest, Inc. and each of Jerry C. Atkin, W. Steve Albrecht, J. Ralph Atkin, Margaret Billson, Henry J. Eyring, Robert G. Sarver, Steven F. Udvar-Hazy, James L. Welch, Bradford R. Rich, Michael J. Kraupp, Eric J. Woodward, Russell A. Childs and Bradford R. Holt, as of August 6, 2013			(15)
	10.21		Form of Indemnification Agreement executed by and between SkyWest, Inc. and each of Ronald J. Mittelstaedt and Keith E. Smith, as of October 1, 2013		Filed herewith
	21.1		Subsidiaries of the Registrant			(14)
	23.1		Consent of Independent Registered Public Accounting Firm		Filed herewith
	31.1		Certification of Chief Executive Officer		Filed herewith
	31.2		Certification of Chief Financial Officer		Filed herewith
	32.1		Certification of Chief Executive Officer		Filed herewith
	32.2		Certification of Chief Financial Officer		Filed herewith
	101.INS	**	XBRL Instance Document
	101.SCH	**	XBRL Taxonomy Extension Schema Document
	101.CAL	**	XBRL Taxonomy Extension Calculation Linkbase Document
	101.LAB	**	XBRL Taxonomy Extension Label Linkbase Document
	101.PRE	**	XBRL Taxonomy Extension Presentation Linkbase Document
	101.DEF	**	XBRL Taxonomy Extension Definition Linkbase Document

**

Attached as Exhibit 101 to this report are the following documents formatted in XBRL (Extensible Business Reporting Language): (i) the Consolidated Statement of Comprehensive Income (Loss) for the years ended December 31, 2013, December 31, 2012 and December 31, 2011, (ii) the Consolidated Balance Sheet at December 31, 2013 and December 31, 2012, and (iii) the Consolidated Statement of Cash Flows for the years ended December 31, 2013, December 31, 2012 and December 31, 2011

(1)

Incorporated by reference to the exhibits to a Registration Statement on Form S-3, File No. 333-129832

(2)

Incorporated by reference to a Registration Statement on Form S-3, File No. 333-42508

(3)

Incorporated by reference to Registrant's Current Report on Form 8-K filed on September 13, 2005, as amended by Amendment No. 2 on Form 8-K/A filed on February 21, 2006

100

(4)

Incorporated by reference to exhibits to Registrant's Quarterly Report on Form 10-Q filed on November 14, 2003

(5)

Incorporated by reference to the exhibits to Amendment No. 1 to a Registration Statement on Form S-3 filed on February 10, 1998 (File No. 333-44619)

(6)

Incorporated by reference to the exhibits to Registrant's Form 10-Q filed for the quarter ended December 31, 1986

(7)

Incorporated by reference to the exhibits to Registrant's Quarterly Report on Form 10-Q filed on February 13, 2001

(8)

Incorporated by reference to the exhibits to a Registration Statement on Form S-8 (File No. 33-41285)

(9)

Incorporated by reference to the exhibits to a Registration Statement on Form S-8 (File No, 333-130848)

(10)

Incorporated by reference to the exhibits to Registrant's Quarterly Report on Form 10-Q filed on July 28, 2000

(11)

Incorporated by reference to the exhibits to Registrant's Annual Report on Form 10-K filed on February 25, 2009

(12)

Incorporated by reference to the exhibits to Registrant's Current Report on Form 8-K filed on November 18, 2010

(13)

Incorporated by reference to the exhibits to Registrant's Current Report on Form 8-K filed on December 13, 2012, as amended by Amendment No. 1 to Current Report on Form 8-K/A filed on June 25, 2013

(14)

Incorporated by reference to the exhibits to Registrant's Annual Report on Form 10-K filed on February 24, 2012

(15)

Incorporated by reference to the exhibits to Registrant's Quarterly Report on Form 10-Q filed on August 7, 2013, as amended by Amendment No. 1 to Quarterly Report on Form 10-Q/A filed on November 4, 2013

101

Report of Independent Registered Public Accounting Firm

        We have audited the consolidated financial statements of SkyWest, Inc. and subsidiaries (the "Company") as of December 31, 2013 and 2012, and for each of the three years in the period ended December 31, 2013, and have issued our report thereon dated February 14, 2014 (included elsewhere in this Form 10-K). Our audits also included the financial statement schedule listed in Item 15(a) of this Form 10-K. This schedule is the responsibility of the Company's management. Our responsibility is to express an opinion based on our audits.

        In our opinion, the financial statement schedule referred to above, when considered in relation to the basic financial statements taken as a whole, presents fairly in all material respects the information set forth therein.

/s/ Ernst & Young LLP

Salt Lake City, Utah
February 14, 2014

102

SKYWEST, INC. AND SUBSIDIARIES
SCHEDULE II—VALUATION AND QUALIFYING ACCOUNTS
For the Years Ended December 31, 2013, 2012 and 2011
(Dollars in thousands)

Description	Balance at Beginning of Year		Additions Charged to Costs and Expenses		Deductions			Balance at End of Year
Year Ended December 31, 2013:
Allowance for inventory obsolescence	$	9,189		949		—			10,138
Allowance for doubtful accounts receivable		94		—		—			94
		9,283		949		—			10,232
Year Ended December 31, 2012:
Allowance for inventory obsolescence	$	8,248		941		—		$	9,189
Allowance for doubtful accounts receivable		240		—		(146	)		94
		8,488		941		(146	)		9,283
Year Ended December 31, 2011:
Allowance for inventory obsolescence	$	7,541	$	707		—		$	8,248
Allowance for doubtful accounts receivable		47		193		—			240
		7,588		900		—			8,488

103

SIGNATURES

        Pursuant to the requirements of Section 13 or 15 (d) of the Securities Act of 1934, as amended, the Registrant has duly caused this Annual Report on Form 10-K for the year ended December 31, 2013, to be signed on its behalf by the undersigned, thereunto duly authorized, on February 14, 2014.

SKYWEST, INC.
By:	/s/ ERIC J. WOODWARD Eric J. Woodward Chief Accounting Officer (Principal Accounting Officer)

ADDITIONAL SIGNATURES

        Pursuant to the requirement of the Securities Act of 1934, as amended, this Annual Report on Form 10-K has been signed below by the following persons in the capacities and on the dates indicated.

Name	Capacities	Date
/s/ JERRY C. ATKIN Jerry C. Atkin	Chairman of the Board and Chief Executive Officer (Principal Executive Officer)	February 14, 2014
/s/ MICHAEL J. KRAUPP Michael J. Kraupp	Chief Financial Officer and Treasurer (Principal Financial Officer)	February 14, 2014
/s/ ERIC J. WOODWARD Eric J. Woodward	Chief Accounting Officer (Principal Accounting Officer)	February 14, 2014
/s/ STEVEN F. UDVAR-HAZY Steven F. Udvar-Hazy	Lead Director	February 14, 2014
/s/ W. STEVE ALBRECHT Steve Albrecht	Director	February 14, 2014
/s/ J. RALPH ATKIN J. Ralph Atkin	Director	February 14, 2014
/s/ MARGARET S. BILLSON Margaret S. Billson	Director	February 14, 2014

104

Name	Capacities	Date
/s/ HENRY J. EYRING Henry J. Eyring	Director	February 14, 2014
/s/ RONALD J. MITTELSTAEDT Ronald J. Mittelstaedt	Director	February 14, 2014
/s/ ROBERT G. SARVER Robert G. Sarver	Director	February 14, 2014
/s/ KEITH E. SMITH Keith E. Smith	Director	February 14, 2014
/s/ JAMES L. WELCH James L. Welch	Director	February 14, 2014

105

EX-10.21

QuickLinks -- Click here to rapidly navigate through this document

Exhibit 10.21

INDEMNIFICATION AGREEMENT

THIS INDEMNIFICATION AGREEMENT is entered into as of October 1, 2013, by and between SkyWest, Inc., a Utah corporation (the "Company"), and [NAME], ("Indemnitee").

RECITALS

        A.    The Company is aware that because of the increased exposure to litigation costs, talented and experienced persons are increasingly reluctant to serve or continue serving as directors and officers of corporations unless they are protected by comprehensive liability insurance and indemnification.

        B.    The statutes and judicial decisions regarding the duties of directors and officers are often difficult to apply, ambiguous, or conflicting, and therefore often fail to provide such directors and officers with adequate guidance regarding the proper course of action.

        C.    The Board of Directors of the Company (the "Board"), has concluded that, in order to retain and attract talented and experienced individuals to serve as officers and directors of the Company and its subsidiaries and to encourage such individuals to take the business risks necessary for the success of the Company and its subsidiaries, the Company should contractually indemnify its officers and directors, and the officers and directors of its subsidiaries, in connection with claims against such officers and directors relating to their services to the Company and its subsidiaries and has further concluded that the failure to provide such contractual indemnification could be detrimental to the Company, its subsidiaries and shareholders.

        D.    Indemnitee's willingness to serve as a director or officer of the Company is predicated, in substantial part, upon the Company's willingness to indemnify Indemnitee in accordance with the principles reflected above, to the fullest extent permitted by the laws of the state of Utah, and upon the other undertakings set forth in this Agreement.

NOW, THEREFORE, in consideration of the promises and as an inducement to Indemnitee to serve as a director or officer of the Company, the parties, intending to be legally bound, hereby agree as follows:

        1.    Definitions.

        (a)Agent.    "Agent" with respect to the Company means any person who is or was a director, officer, employee or other agent of the Company or a Subsidiary; or is or was serving at the request of, for the convenience of, or to represent the interests of, the Company or a Subsidiary as a director, officer, employee or agent of another corporation, partnership, joint venture, trust or other enterprise (including without limitation any employee benefit plan whether or not subject to the Employee Retirement Income Security Act of 1974, as amended ("ERISA")); or was a director, officer, employee or agent of a predecessor corporation (or other predecessor entity or enterprise) of the Company or a Subsidiary, or was a director, officer, employee or agent of another corporation, partnership, joint venture, trust or other enterprise (including without limitation any employee benefit plan whether or not subject to the ERISA) at the request of, for the convenience of, or to represent the interests of such predecessor.

        (b)Change in Control.    "Change in Control" shall mean, and shall be deemed to have occurred if, on or after the date of this Agreement: (i) any "person" (as such term is used in Sections 13(d) and 14(d) of the Securities Exchange Act of 1934, as amended) or group acting in concert, other than a trustee or other fiduciary holding securities under an employee benefit plan of the Company acting in such capacity or a corporation owned directly or indirectly by the shareholders of the Company in substantially the same proportions as their ownership of stock of the Company, becomes the "beneficial owner" (as defined in Rule 13d-3 under said Act), directly

1

or indirectly, of securities of the Company representing more than 50% of the total voting power represented by the Company's then outstanding voting securities; (ii) during any period of two (2) consecutive years, individuals who at the beginning of such period constitute the Board and any new director whose election by the Board or nomination for election by the Company's shareholders was approved by a vote of at least two-thirds (²/3) of the directors then still in office who either were directors at the beginning of the period or whose election or nomination for election was previously so approved, cease for any reason to constitute a majority thereof; (iii) the shareholders of the Company approve a merger or consolidation of the Company with any other corporation other than a merger or consolidation which would result in the voting securities of the Company outstanding immediately prior thereto continuing to represent (either by remaining outstanding or by being converted into voting securities of the surviving entity) at least eighty percent (80%) of the total voting power represented by the voting securities of the Company or such surviving entity outstanding immediately after such merger or consolidation; or (iv) the shareholders of the Company approve a plan of complete liquidation of the Company or an agreement for the sale or disposition by the Company of (in one transaction or a series of related transactions) all or substantially all of the Company's assets.

        (c)Company.    References to the "Company" shall include, in addition to SkyWest, Inc., any constituent corporation (including any constituent of a constituent) absorbed in a consolidation or merger to which SkyWest, Inc. (or any of its wholly owned subsidiaries) is a party which, if its separate existence had continued, would have had power and authority to indemnify its directors, officers, employees, agents or fiduciaries, so that if Indemnitee is or was a director, officer, employee, agent or fiduciary of such constituent corporation, or is or was serving at the request of such constituent corporation as a director, officer, employee, agent or fiduciary of another corporation, partnership, joint venture, employee benefit plan, trust or other enterprise, Indemnitee shall stand in the same position under the provisions of this Agreement with respect to the resulting or surviving corporation as Indemnitee would have with respect to such constituent corporation if its separate existence had continued.

        (d)Expenses.    "Expenses" means all direct and indirect costs of any type or nature whatsoever (including, without limitation, all reasonable attorneys' and experts' fees, costs of investigation and related disbursements) reasonably incurred by Indemnitee in connection with the investigation (whether formal or informal), settlement, defense or appeal of a Proceeding covered hereby or the establishment or enforcement of a right to indemnification under this Agreement, including without limitation in the case of an appeal the premium for, and other costs relating to, any costs bond or supercedes bond or other appeal bond or its equivalent.

        (e)Independent Legal Counsel.    "Independent Legal Counsel" shall mean an attorney or firm of attorneys, selected in accordance with the provisions of Section 3(h) hereof, who shall not have otherwise performed services for the Company or Indemnitee within the preceding three years (other than with respect to matters concerning the rights of Indemnitee under this Agreement, or of other Indemnitees under similar indemnity agreements).

        (f)Other References.    References to "other enterprises" shall include employee benefit plans; references to "fines" shall include any excise taxes assessed on Indemnitee with respect to an employee benefit plan; and references to "serving at the request of the Company" shall include any service as a director, officer, employee, agent or fiduciary of the Company which imposes duties on, or involves services by, such director, officer, employee, agent or fiduciary with respect to an employee benefit plan, its participants or its beneficiaries; and if Indemnitee acted in good faith and in a manner Indemnitee reasonably believed to be in the interest of the participants and beneficiaries of an employee benefit plan, Indemnitee shall be deemed to have acted in a manner "not opposed to the best interests of the Company" as referred to in this Agreement.

2

        (g)Proceeding.    "Proceeding" means any threatened, pending, or completed claim, suit, action, proceeding or alternative dispute resolution mechanism, or any hearing or investigation, whether civil, criminal, administrative, investigative or otherwise, including without limitation any situation which Indemnitee believes in good faith might lead to the institution of any such proceeding.

        (h)Reviewing Party.    "Reviewing Party" shall mean, subject to the provisions of Section 3(f), any person or body appointed by the Board in accordance with applicable law to review the Company's obligations hereunder and under applicable law, which may include a member or members of the Board, Independent Legal Counsel or any other person or body not a party to the particular Proceeding for which Indemnitee is seeking indemnification.

        (i)Subsidiary.    "Subsidiary" means any corporation or other entity of which more than ten percent (10%) of the outstanding voting securities or other voting interests is owned directly or indirectly by the Company, and one or more other Subsidiaries, taken as a whole.

        2.    Maintenance of Liability Insurance.

        (a)   The Company hereby covenants and agrees with Indemnitee that, subject to Section 2(b), the Company shall obtain and maintain in full force and effect directors' and officers' liability insurance ("D&O Insurance"), in reasonable amounts as the Board shall determine from established and reputable insurers with an AM Best rating of A.VI or better, but no less than the amounts in effect upon initial procurement of the D&O Insurance. In all policies of D&O Insurance, Indemnitee shall be named as an insured.

        (b)   Notwithstanding the foregoing, the Company shall have no obligation to obtain or maintain D&O Insurance if the Board determines in good faith that the premium costs for such insurance are (i) disproportionate to the amount of coverage provided after giving effect to exclusions, and (ii) substantially more burdensome to the Company than the premiums charged to the Company for its initial D&O Insurance.

        (c)   To the extent the Company maintains liability insurance applicable to directors, officers, employees, agents or fiduciaries, Indemnitee shall be covered by such policies in such a manner as to provide Indemnitee the same rights and benefits as are provided to the most favorably insured of the Company's directors, if Indemnitee is a director; or of the Company's officers, if Indemnitee is not a director of the Company but is an officer; or of the Company's key employees, agents or fiduciaries, if Indemnitee is not an officer or director but is a key employee, agent or fiduciary.

        3.    Mandatory Indemnification.    The Company shall defend, indemnify and hold harmless Indemnitee to the fullest extent permitted by the Utah Revised Business Corporation Act (the "Act"):

        (a)Third Party Actions.    If Indemnitee was or is a party, or is threatened to be made a party, to any Proceeding (other than an action by or in the right of the Company) by reason of the fact that Indemnitee is or was or is claimed to be an Agent of the Company, or by reason of anything done or not done by Indemnitee in any such capacity, or by reason of the fact that Indemnitee personally guaranteed any obligation of the Company at any time, against any and all Expenses and liabilities or any type whatsoever (including, but not limited to, legal fees, judgments, fines, ERISA excise taxes or penalties, and amounts paid in settlement) reasonably incurred by Indemnitee in connection with the investigation, defense, settlement or appeal of such Proceeding, if Indemnitee acted in good faith and in a manner Indemnitee reasonably believed to be in or not opposed to the best interests of the Company, or, with respect to any criminal action or Proceeding, had no reasonable cause to believe such persons conduct was unlawful. The termination of any action, suit or proceeding by judgment, order, settlement, conviction, or upon a plea of nolo contendere or its equivalent, shall not, of itself, create a presumption that Indemnitee did not act in good faith and in a manner which Indemnitee reasonably believed to be in or not

3

opposed to the best interests of the Company, and, with respect to any criminal action or proceeding, had reasonable cause to believe that Indemnitee's conduct was unlawful.

        (b)Derivative Actions.    If Indemnitee was or is a party, or is threatened to be made a party, to any Proceeding by or in the right of the Company by reason of the fact that Indemnitee is or was an Agent of the Company, or by reason of anything done or not done by Indemnitee in any such capacity, against any and all Expenses and liabilities of any type whatsoever (including, but not limited to, legal fees, judgments, fines, ERISA excise taxes or penalties, and amounts paid in settlement) incurred by Indemnitee in connection with the investigation, defense, settlement or appeal of such Proceeding, if Indemnitee acted in good faith and in a manner Indemnitee reasonably believed to be in or not opposed to the best interests of the Company; except that no indemnification under this subsection shall be made, and Indemnitee shall repay all amounts previously advanced by the Company, in respect of any claim, issue or matter for which Indemnitee is judged in a final, non-appealable decision to be liable to the Company by a court of competent jurisdiction due to willful misconduct in the performance of Indemnitee's duties to the Company, unless and only to the extent that the court in which such Proceeding was brought shall determine that, despite the adjudication of liability but in view of all of the circumstances of the case, Indemnitee is fairly and reasonably entitled to indemnification. The termination of any action, suit or proceeding by judgment, order, settlement, conviction, or upon a plea of nolo contendere or its equivalent, shall not, of itself, create a presumption that Indemnitee did not act in good faith and in a manner which Indemnitee reasonably believed to be in or not opposed to the best interests of the Company, and, with respect to any criminal action or proceeding, had reasonable cause to believe that Indemnitee's conduct was unlawful.

        (c)Presumptions; Burden of Proof.    In making any determination concerning Indemnitee's right to indemnification, there shall be a presumption that Indemnitee has satisfied the applicable standard of conduct, and the Company may overcome such presumption only by its adducing clear and convincing evidence to the contrary. For purposes of this Agreement, the termination of any Proceeding by judgment, order, settlement (whether with or without court approval) or conviction, or upon a plea of nolo contendere, or its equivalent, shall not create a presumption that Indemnitee did not meet any particular standard of conduct or have any particular belief or that a court has determined that indemnification is not permitted by this Agreement or applicable law. In addition, neither the failure of any Reviewing Party to have made a determination as to whether Indemnitee has met any particular standard of conduct or had any particular belief, nor an actual determination by any Reviewing Party that Indemnitee has not met such standard of conduct or did not have such belief, prior to the commencement of legal proceedings by Indemnitee to secure a judicial determination that Indemnitee should be indemnified under this Agreement under applicable law, shall be a defense to Indemnitee's claim or create a presumption that Indemnitee has not met any particular standard of conduct or did not have any particular belief. Any determination concerning Indemnitee's right to indemnification that is adverse to Indemnitee may be challenged by Indemnitee in the courts of the State of Utah. No determination by the Company (including without limitation by its directors or any Independent Legal Counsel) that Indemnitee has not satisfied any applicable standard of conduct shall be a defense to any claim by Indemnitee for indemnification or reimbursement or advance payment of Expenses by the Company hereunder or create a presumption that Indemnitee has not met any applicable standard of conduct.

        (d)Actions Where Indemnitee Is Deceased.    If Indemnitee was or is a party, or is threatened to be made a party, to any Proceeding by reason of the fact that Indemnitee is or was an Agent of the Company, or by reason of anything done or not done by Indemnitee in any such capacity, and prior to, during the pendency of, or after completion of, such Proceeding, Indemnitee shall die, then the Company shall defend, indemnify and hold harmless the estate, heirs and legatees of Indemnitee against any and all Expenses and liabilities reasonably incurred by or for

4

such persons or entities in connection with the investigation, defense, settlement or appeal of such Proceeding on the same basis as provided for Indemnitee in Sections 3(a) and 3(b) above.

        (e)Extent of Insurance.    The Expenses and liabilities covered hereby shall be net of any payments made by D&O Insurance carriers or others.

        (f)Review of Indemnification Obligations.    Notwithstanding the foregoing, in the event any Reviewing Party shall have determined (in a written opinion, in any case in which Independent Legal Counsel is the Reviewing Party) that Indemnitee is not entitled to be indemnified hereunder under applicable law: (i) the Company shall have no further obligation under Section 3(a) or 3(b) to make any payments to Indemnitee not made prior to such determination by such Reviewing Party; and (ii) the Company shall be entitled to be reimbursed by Indemnitee (who hereby agrees to reimburse the Company) for all Expenses theretofore paid to Indemnitee to which Indemnitee is not entitled hereunder under applicable law; provided, however, that if Indemnitee has commenced or thereafter commences legal proceedings in a court of competent jurisdiction to secure a determination that Indemnitee is entitled to be indemnified hereunder under applicable law, any determination made by any Reviewing Party that Indemnitee is not entitled to be indemnified hereunder under applicable law shall not be binding and Indemnitee shall not be required to reimburse the Company for any Expenses theretofore paid in indemnifying Indemnitee until a final judicial determination is made with respect thereto (as to which all rights of appeal therefrom have been exhausted or lapsed). Indemnitee's obligation to reimburse the Company for any Expenses shall be unsecured and no interest shall be charged thereon.

        (g)Indemnitee Rights on Unfavorable Determination; Binding Effect.    If any Reviewing Party determines that Indemnitee substantively is not entitled to be indemnified hereunder in whole or in part under applicable law, Indemnitee shall have the right to commence litigation seeking an initial determination by the court or challenging any such determination by such Reviewing Party or any aspect thereof, including the legal or factual bases therefor, and the Company hereby consents to service of process and to appear in any such proceeding. Absent such litigation, any determination by any Reviewing Party shall be conclusive and binding on the Company and Indemnitee.

        (h)Selection of Reviewing Party; Change in Control.    A determination, if required by applicable law, with respect to Indemnitee's entitlement to indemnification shall be made in accordance with the provisions of this paragraph (h). If there has not been a Change in Control, a Reviewing Party shall be selected by the Board, and if there has been such a Change in Control (other than a Change in Control which has been approved by a majority of the Board who were directors immediately prior to such Change in Control), any Reviewing Party with respect to all matters thereafter arising concerning the rights of Indemnitee to indemnification of Expenses under this Agreement or any other agreement or under the Company's Articles of Incorporation or Bylaws as now or hereafter in effect, or under any other applicable law, if desired by Indemnitee, shall be Independent Legal Counsel selected by Indemnitee and approved by the Company (which approval shall not be unreasonably withheld). Such counsel, among other things, shall render its written opinion to the Company and Indemnitee as to whether and to what extent Indemnitee would be entitled to be indemnified hereunder under applicable law and the Company agrees to abide by such opinion. The Company agrees to pay the reasonable fees of the Independent Legal Counsel referred to above and to indemnify fully such counsel against any and all expenses (including attorneys' fees), claims, liabilities and damages arising out of or relating to this Agreement or its engagement pursuant hereto. Notwithstanding any other provision of this Agreement, the Company shall not be required to pay Expenses of more than one Independent Legal Counsel in connection with all matters concerning a single Indemnitee, and such Independent Legal Counsel shall be the Independent Legal Counsel for any or all other Indemnitees unless: (i) the employment of separate counsel by one or more Indemnitees has been

5

previously authorized by the Board in writing; or (ii) an Indemnitee shall have provided to the Company a written statement that such Indemnitee has reasonably concluded that there may be a conflict of interest between such Indemnitee and the other Indemnitees with respect to the matters arising under this Agreement.

        4.    Partial Indemnification.    If Indemnitee is found under Sections 3, 6 or 9 hereof not to be entitled to indemnification for all of the Expenses relating to a Proceeding, the Company shall indemnify Indemnitee for any portion of such Expenses not specifically precluded by the operation of such Sections 3, 6 or 9.

        5.    Indemnification Procedures; Mandatory Advancement of Expenses.

        (a)   Promptly after receipt by Indemnitee of notice to him or her of the commencement or threat of any Proceeding covered hereby, Indemnitee shall notify the Company of the commencement or threat thereof, provided that any failure to so notify shall not relieve the Company of any of its obligations hereunder, except to the extent that such failure prejudices the Company's ability to perform its obligations hereunder.

        (b)   If, at the time of the receipt of a notice pursuant to Section 5(a) above, the Company has D&O Insurance in effect, the Company shall give prompt notice of the Proceeding or claim to its insurers in accordance with the procedures set forth in the applicable policies. The Company shall thereafter take all reasonably necessary action to cause such insurers to pay all amounts payable as a result of such Proceeding in accordance with the terms of such policies.

        (c)   Indemnitee shall be entitled to retain one or more counsel from time to time selected by Indemnitee in Indemnitee's reasonable discretion to act as its counsel in and for the investigation, defense, settlement or appeal of each Proceeding. The Company shall not waive any privilege or right available to Indemnitee in any such Proceeding.

        (d)   The Company shall bear all reasonable fees and Expenses (including invoices for advance retainers) of such counsel, and all reasonable fees and Expenses invoiced by other persons or entities, in connection with the investigation, defense, settlement or appeal of each such Proceeding. Such fees and Expenses are referred to herein as "Covered Expenses."

        (e)   Until a determination to the contrary under Section 6 hereof is made, the Company shall advance all Covered Expenses in connection with each Proceeding. Indemnitee shall qualify for advances upon the execution and delivery to the Company of this Agreement which shall constitute an undertaking providing that Indemnitee undertakes to the fullest extent permitted by law to repay the advance if and to the extent that it is ultimately determined by a court of competent jurisdiction in a final judgment, not subject to appeal, that Indemnitee is not entitled to be indemnified by the Company. No other form of undertaking shall be required other than the execution of this Agreement. Advances shall be unsecured and interest free. Advances shall be made without regard to Indemnitee's ability to repay the expenses and without regard to Indemnitee's ultimate entitlement to indemnification under the other provisions of this Agreement.

        (f)    Each advance to be made hereunder shall be paid by the Company to Indemnitee within ten (10) business days following delivery of a written request therefor by Indemnitee to the Company.

        (g)   The Company acknowledges the potentially severe damage to Indemnitee should the Company fail timely to make such advances to Indemnitee.

        (h)   The Company shall not settle any proceeding if, as a result of such settlement, any fine or obligation is imposed on Indemnitee without Indemnitee's prior written consent.

6

        (i)    If Indemnitee is the subject of or is implicated in any way during any proceeding, the Company will share with Indemnitee any information it has turned over to any third parties concerning the investigation.

        (j)    The knowledge and/or actions, or failure to act, of any other Agent of the Company shall not be imputed to Indemnitee for purposes of determining the right to indemnification under this Agreement.

        (k)   For purposes of any determination of good faith, Indemnitee shall be deemed to have acted in good faith if Indemnitee's action is based on the records or books of account of the Company, including financial statements, or on information supplied to Indemnitee by the officers of the Company (other than Indemnitee) in the course of their duties, or on the advice of legal counsel for the Company or the Board or counsel selected by any committee of the Board or on information or records given or reports made to the Company by an independent certified public accountant or by an appraiser, investment banker, compensation consultant, or other expert selected with reasonable care by the Company or the Board or any committee of the Board. The provisions of this Section 5(k) shall not be deemed to be exclusive or to limit in any way the other circumstances in which Indemnitee may be deemed to have met the applicable standard of conduct.

        (l)Notice to Insurers.    If, at the time of the receipt by the Company of a notice of a Proceeding subject to Section 3(a) or 3(b) hereof, the Company has D&O Insurance or other liability insurance in effect which may cover such Proceeding, the Company shall give prompt notice of the commencement of such Proceeding to the insurers in accordance with the procedures set forth in the respective policies. The Company shall thereafter take all reasonably necessary action to cause such insurers to pay, on behalf of Indemnitee, all amounts payable as a result of such Proceeding in accordance with the terms of such policies.

        (m)Selection of Counsel.    In the event the Company shall be obligated hereunder to provide indemnification for or make any advancement of Expenses with respect to the Expenses of any Proceeding, the Company, if appropriate, shall be entitled to assume the defense of such Proceeding with counsel selected by the Company, subject to approval by Indemnitee (which approval shall not be unreasonably withheld), upon the delivery to Indemnitee of written notice of the Company's election to do so. After delivery of such notice and the retention of such counsel by the Company, the Company will not be liable to Indemnitee under this Agreement for any fees or expenses of separate counsel subsequently retained by or on behalf of Indemnitee with respect to the same Proceeding; provided that: (i) Indemnitee shall have the right to employ Indemnitee's separate counsel in any such Proceeding at Indemnitee's expense; and (ii) if (A) the employment of separate counsel by Indemnitee has been previously authorized by the Company, (B) Indemnitee shall have reasonably concluded that there may be a conflict of interest between the Company and Indemnitee in the conduct of any such defense, or (C) the Company shall not continue to retain such counsel to defend such Proceeding, then the fees and expenses of Indemnitee's separate counsel shall be Expenses for which Indemnitee may receive indemnification or advancement of Expenses hereunder.

        6.    Determination of Right to Indemnification.

        (a)   To the extent Indemnitee has been successful on the merits or otherwise in defense of any Proceeding, claim, issue or matter covered hereby, Indemnitee need not repay any of the Expenses advanced in connection with the investigation, defense or appeal of such Proceeding.

        (b)   Indemnitee shall have the right to advancement by the Company prior to the final disposition of any Proceeding of any and all Expenses relating to, arising out of or resulting from

7

any Proceeding paid or incurred by Indemnitee or which Indemnitee determines are reasonably likely to be paid or incurred by Indemnitee.

        (c)   Subject to the provisions of Section 3(f), notwithstanding a determination by a Reviewing Party or a court that Indemnitee is not entitled to indemnification with respect to a specific Proceeding, Indemnitee shall have the right to apply to the courts of the State of Utah for the purpose of enforcing Indemnitee's right to indemnification pursuant to this Agreement.

        (d)   Subject to the provisions of Section 3(h), the Company shall indemnify Indemnitee against all Expenses reasonably incurred by Indemnitee in connection with any Proceeding under Sections 6(b) or 6(c) and against all Expenses reasonably incurred by Indemnitee in connection with any other Proceeding between the Company and Indemnitee involving the interpretation or enforcement of the rights of Indemnitee under this Agreement unless a court of competent jurisdiction finds that each of the material claims and/or defenses of Indemnitee in any such Proceeding were frivolous or made in bad faith.

        (e)   The Company hereby agrees to indemnify Indemnitee to the fullest extent permitted by the Act, notwithstanding that such indemnification is not specifically authorized by the other provisions of this Agreement, the Company's Articles of Incorporation, the Company's Bylaws or by statute. In the event of any change after the date of this Agreement in any applicable law, statute or rule which expands the right of a Utah corporation to indemnify a member of its board of directors or an officer, employee, agent or fiduciary, it is the intent of the parties hereto that Indemnitee shall enjoy by this Agreement the greater benefits afforded by such change. In the event of any change in any applicable law, statute or rule which narrows the right of a Utah corporation to indemnify a member of its board of directors or an officer, employee, agent or fiduciary, such change, to the extent not otherwise required by such law, statute or rule to be applied to this Agreement, shall have no effect on this Agreement or the parties' rights and obligations hereunder except as set forth in Section 9 hereof.

        (f)Nonexclusivity.    The indemnification and the payment of Expense advances provided by this Agreement shall be in addition to any rights to which Indemnitee may be entitled under the Company's Articles of Incorporation, its Bylaws, any other agreement, any vote of shareholders or disinterested directors, the Act, or otherwise. The indemnification and the payment or advancement of Expenses provided under this Agreement shall continue as to Indemnitee for any action taken or not taken while serving in an indemnified capacity even though subsequent thereto Indemnitee may have ceased to serve in such capacity.

        (g)No Duplication of Payments.    The Company shall not be liable under this Agreement to make any payment in connection with any Proceeding to the extent Indemnitee has otherwise actually received payment (under any insurance policy, provision of the Company's Articles of Incorporation, Bylaws or otherwise) of the amounts otherwise payable hereunder.

        (h)Partial Indemnification.    If Indemnitee is entitled under any provision of this Agreement to indemnification by the Company for some or a portion of Expenses incurred in connection with any Proceeding, but not, however, for all of the total amount thereof, the Company shall nevertheless indemnify Indemnitee for the portion of such Expenses to which Indemnitee is entitled.

        7.    Articles of Incorporation and By-Laws.    The Company agrees that the Company's Articles of Incorporation and Bylaws in effect on the date hereof shall not be amended to reduce, limit, hinder or delay (a) the rights of Indemnitee granted hereby, or (b) the ability of the Company to indemnify Indemnitee as required hereby. The Company further agrees that it shall exercise the powers granted to it under its Articles of Incorporation, its Bylaws and by applicable law to indemnify Indemnitee to the fullest extent possible as required hereby.

8

        8.    Witness Expenses.    The Company agrees to compensate Indemnitee for the reasonable value of Indemnitee's time spent, and to reimburse Indemnitee for all Expenses (including reasonable attorneys' fees and travel costs) reasonably incurred by Indemnitee, in connection with being a witness, or if Indemnitee is threatened to be made a witness, with respect to any Proceeding, by reason of Indemnitee serving or having served as an Agent of the Company.

        9.    Exceptions.    Notwithstanding any other provision hereunder to the contrary, the Company shall not be obligated pursuant to the terms of this Agreement:

        (a)Claims Initiated by Indemnitee.    To indemnify or advance Expenses to Indemnitee with respect to Proceedings or claims initiated or brought voluntarily by Indemnitee and not by way of defense (other than: (i) Proceedings under Sections 6(b) or 6(c); (ii) proceedings brought to establish or enforce a right to indemnification under this Agreement or the provisions of the Company's Articles of Incorporation or Bylaws unless a court of competent jurisdiction determines that each of the material assertions made by Indemnitee in such Proceeding were not made in good faith or were frivolous; or (iii) proceedings or claims instituted by Indemnitee with the approval by the Board); or

        (b)Unauthorized Settlements.    To indemnify Indemnitee under this Agreement for any amounts paid in settlement of a Proceeding covered hereby without the prior written consent of the Company to such settlement, which consent will not be unreasonably withheld provided that the Company's consent is not required if the Company is refusing to indemnify or advance Expenses to Indemnitee.

        10.    Non-exclusivity.    This Agreement is not the exclusive arrangement between the Company and Indemnitee regarding the subject matter hereof and shall not diminish or affect any other rights which Indemnitee may have under any provision of law, the Company's Articles of Incorporation or Bylaws, under other agreements, or otherwise.

        11.    Continuation After Term; Binding Effect.    Indemnitee's rights hereunder shall continue after Indemnitee has ceased acting an Agent of the Company and the benefits hereof shall inure to the benefit of the heirs, executors and administrators of Indemnitee. The Company shall require and cause any successor (whether direct or indirect by purchase, merger, consolidation or otherwise) to all, substantially all or a substantial part, of the business and/or assets of the Company, by written agreement in form and substance satisfactory to Indemnitee, expressly to assume and agree to perform this Agreement in the same manner and to the same extent that the Company would be required to perform if no such succession had taken place.

        12.    Interpretation of Agreement.    This Agreement shall be interpreted and enforced so as to provide indemnification to Indemnitee to the fullest extent now or hereafter permitted by the Act.

        13.    Severability.    If any provision or provisions of this Agreement shall be held to be invalid, illegal or unenforceable, provisions of the Agreement shall not in any way be affected or impaired thereby, and to the fullest extent possible, the provisions of this Agreement shall be construed or altered by the court so as to remain enforceable and to provide Indemnitee with as many of the benefits contemplated hereby as are permitted under the Act.

        14.    Counterparts, Modification and Waiver.    This Agreement may be signed in counterparts. This Agreement constitutes a separate agreement between the Company and Indemnitee and may be supplemented or amended as to Indemnitee only by a written instrument signed by the Company and Indemnitee, with such amendment binding only the Company and Indemnitee. All waivers must be in a written document signed by the party to be charged. No waiver of any of the provisions of this Agreement shall be implied by the conduct of the parties. A waiver of any right hereunder shall not constitute a waiver of any other right hereunder.

9

        15.    Notices.    All notices, demands, consents, requests, approvals and other communications required or permitted hereunder shall be in writing and shall be deemed to have been properly given if hand delivered (effective upon receipt or when refused), or if sent by a courier freight prepaid (effective upon receipt or when refused), in the case of the Company, at the addresses listed below, or to such other addresses as the parties may notify each other in writing.

To Company:	SkyWest, Inc.
	Attention: Chief Executive Officer
	444 South River Road
	St. George, Utah 84790
To Indemnitee:	At Indemnitee's residence address and facsimile number on the records of the Company from time to time.

        16.    Evidence of Coverage.    Upon request by Indemnitee, the Company shall provide evidence of the liability insurance coverage required by this Agreement. The Company shall promptly notify Indemnitee of any change in the Company's D&O Insurance coverage.

        17.    Governing Law.    This Agreement shall be governed by and construed in accordance with the internal laws of the State of Utah.

        18.    Consent to Jurisdiction.    The Company and Indemnitee each hereby irrevocably consent to the jurisdiction of the courts of the State of Utah for all purposes in connection with any action or proceeding which arises out of or relates to this Agreement and agree that any action instituted under this Agreement shall be commenced, prosecuted and continued only in the federal and state courts located in the State of Utah in and for Salt Lake County, which shall be the exclusive and only proper forum for adjudicating such a claim.

        19.    No Construction as Employment Agreement.    Nothing contained in this Agreement shall be construed as giving Indemnitee any right to be retained in the employ of the Company or any of its subsidiaries or affiliated entities.

[Remainder of Page Intentionally Left Blank;
Signatures appear on the following page.]

10

IN WITNESS WHEREOF, the parties hereto have entered into this Indemnification Agreement effective as of the date first above written.

SKYWEST INC.
By:	[Name], [Title]
INDEMNITEE:
[Name]

11

QuickLinks

Exhibit 10.21

INDEMNIFICATION AGREEMENT
RECITALS
[ Remainder of Page Intentionally Left Blank; Signatures appear on the following page .]

EX-23.1

QuickLinks -- Click here to rapidly navigate through this document

Exhibit 23.1

Consent of Independent Registered Public Accounting Firm

        We consent to the incorporation by reference in the Registration Statements (Form S-8 No.'s 333-171595, 333-161396, 333-135239, 333-134379, 333-133470, 333-130848, 333-130846, 33-60173 and 333-70408) pertaining to the SkyWest, Inc. 2011 Long-term Incentive Plan. SkyWest, Inc. 2010 Employee Stock Purchase Plan, Atlantic Southeast Airlines, Inc. Investment Savings Plan, SkyWest, Inc. 2006 Long Term Incentive Plan, 2004 Restatement of the SkyWest, Inc. Employees' Retirement Plan, SkyWest, Inc. 2006 Employee Stock Purchase Plan, SkyWest, Inc. 1995 Employee Stock Purchase Plan, SkyWest, Inc. 2001 Allshare Incentive Stock Option Plan and SkyWest, Inc. Executive Stock Incentive Plan, respectively, of SkyWest, Inc. and subsidiaries, of our reports dated February 14, 2014, with respect to the consolidated financial statements and schedule of SkyWest, Inc. and subsidiaries, and the effectiveness of internal control over financial reporting of SkyWest, Inc. and subsidiaries, included in this Annual Report (Form10-K) for the year ended December 31, 2013.

/s/ Ernst & Young LLP

Salt Lake City, Utah
February 14, 2014

QuickLinks

Exhibit 23.1

Consent of Independent Registered Public Accounting Firm

EX-31.1

QuickLinks -- Click here to rapidly navigate through this document

Exhibit 31.1

CERTIFICATION

I, Jerry C. Atkin, certify that:

        1.     I have reviewed this Annual Report on Form 10-K of SkyWest, Inc. for the year ended December 31, 2013;

        2.     Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

        3.     Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of and for the periods presented in this report.

        4.     The registrant's other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15(d)-15(f)) for the registrant and have:

        a)    designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

        b)    designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with general accepted accounting principles;

        c)     evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

        d)    disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

        5.     The registrant's other certifying officers and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

        a)    all significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

        b)    any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Date: February 14, 2014

/s/ JERRY C. ATKIN
Jerry C. Atkin
Chairman of the Board and Chief Executive Officer

QuickLinks

Exhibit 31.1

CERTIFICATION

EX-31.2

QuickLinks -- Click here to rapidly navigate through this document

Exhibit 31.2

CERTIFICATION

I, Eric J. Woodward, certify that:

        1.     I have reviewed this Annual Report on Form 10-K of SkyWest, Inc. for the year ended December 31, 2013;

        2.     Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

        3.     Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of and for the periods presented in this report.

        4.     The registrant's other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15(d)-15(f)) for the registrant and have:

        a)    designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

        b)    designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with general accepted accounting principles;

        c)     evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

        d)    disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

        5.     The registrant's other certifying officers and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

        a)    all significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

        b)    any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Date: February 14, 2014

/s/ ERIC J. WOODWARD
Eric J. Woodward
Chief Accounting Officer

QuickLinks

Exhibit 31.2

CERTIFICATION

EX-32.1

QuickLinks -- Click here to rapidly navigate through this document

Exhibit 32.1

CERTIFICATION PURSUANT TO
18 U.S.C. SECTION 1350,
AS ADOPTED PURSUANT TO
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

        In connection with the Annual Report on Form 10-K of SkyWest, Inc. (the "Company") for the year ended December 31, 2013, as filed with the Securities and Exchange Commission (the "Report"), I, Jerry C. Atkin, Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that, to the best of my knowledge:

        (1)   The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

        (2)   The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ JERRY C. ATKIN
Jerry C. Atkin
Chairman of the Board and Chief Executive Officer
February 14, 2014

        This certification accompanies the Report pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 and shall not, except to the extent required by the Sarbanes-Oxley Act of 2002, be deemed filed by the Company for purposes of Section 18 of the Securities Exchange Act of 1934, as amended.

        A signed original of this written statement required by Section 906 of the Sarbanes-Oxley Act of 2002 has been provided to the Company and will be retained by the Company and furnished to the Securities and Exchange Commission or its staff upon request.

QuickLinks

Exhibit 32.1

CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

EX-32.2

QuickLinks -- Click here to rapidly navigate through this document

Exhibit 32.2

CERTIFICATION PURSUANT
TO 18 U.S.C. SECTION 1350,
AS ADOPTED PURSUANT TO
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

        In connection with the Annual Report on Form 10-K of SkyWest, Inc. (the "Company") for the year ended December 31, 2013, as filed with the Securities and Exchange Commission (the "Report"), I, Eric J. Woodward, Chief Accounting Officer of the Company, certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that, to the best of my knowledge:

        (1)   The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

        (2)   The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ ERIC J. WOODWARD
Eric J. Woodward
Chief Accounting Officer
February 14, 2014

        This certification accompanies the Report Amendment pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 and shall not, except to the extent required by the Sarbanes-Oxley Act of 2002, be deemed filed by the Company for purposes of Section 18 of the Securities Exchange Act of 1934, as amended.

        A signed original of this written statement required by Section 906 of the Sarbanes-Oxley Act of 2002 has been provided to the Company and will be retained by the Company and furnished to the Securities and Exchange Commission or its staff upon request.

QuickLinks

Exhibit 32.2

CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

XML

Income Taxes (Details 2) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Taxes
Statutory Federal income tax rate (as a percent)	35.00%
Reconciliation between the statutory Federal income tax rate of 35% and the effective rate which is derived by dividing the provision (benefit) for income taxes by income (loss) before provision for income taxes
Computed ''expected'' provision (benefit) for income taxes at the statutory rates adjusted for permanent differences	$ 37,743	$ 32,983	$ (14,683)
Purchase accounting (gain) adjustment			1,999
State income tax provision (benefit), net of Federal income tax benefit	2,867	2,220	(1,810)
Valuation allowance changes affecting the provision for income taxes	1,430	1,614
Other, net	(2,464)	(2,078)	(8,341)
Provision (benefit) for income taxes	39,576	34,739	(22,835)
Deferred tax assets:
Intangible Asset	36,164	37,031
Accrued benefits	40,850	40,469
Net operating loss carryforward	85,885	118,448
AMT credit carryforward	17,649	15,882
Deferred aircraft credits	44,350	48,124
Accrued reserves and other	30,987	31,846
Total deferred tax assets	255,885	291,800
Valuation allowance	(3,044)	(1,614)
Deferred tax liabilities:
Accelerated depreciation	(824,149)	(823,487)
Total deferred tax liabilities	(824,149)	(823,487)
Net deferred tax liability	$ (571,308)	$ (533,301)

XML

Retirement Plans and Employee Stock Purchase Plans (Details) (USD $) In Millions, unless otherwise specified	1 Months Ended		12 Months Ended
	Dec. 31, 2007	Nov. 30, 2007	Dec. 31, 2013	Dec. 31, 2013 Minimum	Dec. 31, 2013 Maximum	Dec. 31, 2013 SkyWest Plan	Dec. 31, 2012 SkyWest Plan	Dec. 31, 2011 SkyWest Plan	Dec. 31, 2013 Atlantic Southeast and the ExpressJet Plans	Dec. 31, 2012 Atlantic Southeast and the ExpressJet Plans	Dec. 31, 2011 Atlantic Southeast and the ExpressJet Plans	Dec. 31, 2013 Atlantic Southeast Plan	Dec. 31, 2013 Atlantic Southeast Plan Minimum	Dec. 31, 2013 Atlantic Southeast Plan Maximum
Retirement Plans
Service period required to be completed to be eligible to participate in plan						90 days						90 days
Required age for an employee to be eligible to participate in plan						18 years						18 years
Percentage of employer matching contribution based on length of service						100.00%							20.00%	75.00%
Percentage of participant's compensation eligible for employer's matching contribution based upon length of service, threshold one						2.00%
Percentage of participant's compensation eligible for employer's matching contribution based upon length of service, threshold two						4.00%
Percentage of participant compensation eligible for employer's matching contribution based upon length of service, threshold three						6.00%
Company's combined contributions						$ 18.3	$ 16.0	$ 14.4	$ 26.7	$ 26.4	$ 25.1
Maximum percentage of participant's total compensation eligible for employer matching contribution												6.00%
Minimum service period required to be completed for eight percent matching contribution by the employer												10 years
Maximum percentage of participant's total compensation eligible for employer matching contribution after requisite service period												8.00%
Percentage of vesting for plan participants' elective deferrals and rollover amounts												100.00%
Percentage of vesting of company matching contribution based on length of service													10.00%	100.00%
ExpressJet Plan
Eligible age to provide medical bridge coverage				60 years	65 years
Minimum period of service required to be completed by retired employees for availing medical bridge coverage			10 years
Mandatory retirement age for commercial pilots	65 years	60 years

XML

Capital Transactions (Details) (USD $)	12 Months Ended														0 Months Ended	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013 Stock options and restricted stock	Dec. 31, 2013 Stock options	Dec. 31, 2012 Stock options	Dec. 31, 2011 Stock options	Dec. 31, 2013 Restricted Stock	Dec. 31, 2012 Restricted Stock	Dec. 31, 2011 Restricted Stock	Dec. 31, 2013 Restricted Stock Directors	Dec. 31, 2013 Executive Plan, All share Plan and 2006 Incentive Plan item	Dec. 31, 2013 Executive Plan, All share Plan and 2006 Incentive Plan Stock options	May 04, 2010 2010 Incentive Plan	May 04, 2010 2010 Incentive Plan Stock options	Dec. 31, 2013 2010 Incentive Plan Stock options	Dec. 31, 2013 2010 Incentive Plan Restricted Stock
Capital Transactions
Stock based compensation expense	$ 4,363,000	$ 4,693,000	$ 5,365,000
Preferred Stock
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock outstanding (in shares)	0
Stock Compensation
Number of shares authorized														5,150,000
Minimum incentive stock option exercise price, expressed as a percentage of common stock grant date market value															100.00%
Number of stock option plans												3
Options outstanding (in shares)					3,407,575	3,653,859	4,176,673						2,613,415
Additional shares of common stock available for issuance	0
Assumptions used to determine value of the shares purchased under the stock purchase plan using Black-Scholes option pricing model
Expected annual dividend rate (as a percent)					1.21%	1.23%	1.04%
Risk-free interest rate (as a percent)					0.92%	0.81%	2.08%
Average expected life (in years)					6 years	5 years 7 months 6 days	5 years 9 months 18 days
Expected volatility of common stock (as a percent)					44.60%	40.90%	40.40%
Forfeiture rate (as a percent)					0.00%	0.00%	0.00%
Granted (in dollars per share)					$ 5.04	$ 4.43	$ 5.74
Granted (in shares)								312,104	318,139	249,502	29,453						282,651
Vesting period																	3 years
Number of shares
Nonvested shares at the beginning of the period (in shares)								698,885	611,602	659,263
Granted (in shares)								312,104	318,139	249,502	29,453						282,651
Vested (in shares)								(231,465)	(212,841)	(238,848)
Cancelled (in shares)								(45,933)	(18,015)	(58,315)
Nonvested shares at the end of the period (in shares)								733,591	698,885	611,602
Weighted Average Grant-Date Fair Value
Nonvested shares at the beginning of the period (in dollars per share)								$ 14.21	$ 15.08	$ 18.97
Granted (in dollars per share)								$ 13.41	$ 13.04	$ 15.51	$ 13.41						$ 13.24
Vested (in dollars per share)								$ 14.35	$ 14.95	$ 25.80
Cancelled (in dollars per share)								$ 13.69	$ 14.20	$ 15.71
Nonvested shares at the end of the period (in dollars per share)								$ 13.79	$ 14.21	$ 15.08
Compensation expenses
Total unrecognized compensation cost				4,900,000
Unrecognized compensation cost recognized over a weighted average period (in years)				1 year 8 months 12 days
Period from grant date after which stock options become exercisable, minimum (in months)					6 months
Period from grant date within which incentive stock options are exercisable, maximum (in years)					10 years
Number of Options
Outstanding at the beginning of the period (in shares)					3,653,859	4,176,673	4,586,979						2,613,415
Granted (in shares)					173,560	200,115	327,617									173,560
Exercised (in shares)					(75,080)	(179,204)	(5,941)
Cancelled (in shares)					(344,764)	(543,725)	(731,982)
Outstanding at the end of the period (in shares)					3,407,575	3,653,859	4,176,673						2,613,415
Exercisable (in shares)					2,818,464	3,031,825
Weighted Average Exercise Price
Outstanding at the beginning of the period (in dollars per share)					$ 18.44	$ 19.26	$ 19.96
Granted (in dollars per share)					$ 13.24	$ 13.06	$ 15.45
Exercised (in dollars per share)					$ 10.91	$ 10.57	$ 10.57
Cancelled (in dollars per share)					$ 20.67	$ 25.35	$ 24.73
Outstanding at the end of the period (in dollars per share)					$ 17.99	$ 18.44	$ 19.26
Exercisable (in dollars per share)					$ 18.83	$ 19.28
Weighted Average Remaining Contractual Term
Outstanding, Weighted Average Remaining Contractual Term (in years)					1 year 9 months 18 days	2 years 3 months 18 days
Exercisable, Weighted Average Remaining Contractual Term (in years)					1 year 1 month 6 days	1 year 9 months 18 days
Aggregate Intrinsic Value
Total intrinsic value of options exercised					$ 172,000	$ 191,000	$ 31,000
Non-vested stock options
Non-vested shares at beginning of year (in shares)					622,034
Granted (in shares)					173,560	200,115	327,617									173,560
Vested (in shares)					(206,483)
Non-vested shares at end of year (in shares)					589,111	622,034
Weighted Average Grant-Date Fair Value
Non-vested shares at beginning of year (in dollars per share)					$ 4.99
Granted (in dollars per share)					$ 5.04	$ 4.43	$ 5.74
Vested (in dollars per share)					$ 4.78
Non-vested shares at end of year (in dollars per share)					$ 5.07	$ 4.99

XML

Nature of Operations and Summary of Significant Accounting Policies (Details 3) (USD $) In Millions, unless otherwise specified			12 Months Ended			12 Months Ended			12 Months Ended				12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013 Aircraft and rotable spares Maximum	Dec. 31, 2013 Aircraft and rotable spares Minimum	Dec. 31, 2013 Ground equipment	Dec. 31, 2013 Ground equipment Maximum	Dec. 31, 2013 Ground equipment Minimum	Dec. 31, 2013 Office equipment	Dec. 31, 2013 Office equipment Maximum	Dec. 31, 2013 Office equipment Minimum	Dec. 31, 2013 Leasehold improvements	Dec. 31, 2013 Buildings	Dec. 31, 2013 Buildings Maximum	Dec. 31, 2013 Buildings Minimum
Inventories
Inventory allowance	$ 10.1	$ 9.2
Property and equipment
Depreciable Life			18 years	10 years		10 years	5 years		7 years	5 years	15 years		39 years 6 months	20 years
Residual Value (as a percent)			30.00%	0.00%	0.00%			0.00%			0.00%	0.00%

XML

Income Taxes (Tables)

12 Months Ended

Dec. 31, 2013

Income Taxes

Schedule of components of provision for income taxes

The provision for income taxes includes the following components (in thousands):

	Year ended December 31,
	2013		2012		2011
Current tax provision (benefit):
Federal	$	1,767	$	—	$	—
State		343		441		396
		2,110		441		396
Deferred tax provision (benefit):
Federal		34,728		31,791		(21,533	)
State		2,738		2,507		(1,698	)
		37,466		34,298		(23,231	)
Provision (benefit) for income taxes		39,576		34,739		(22,835	)

Schedule of income tax rate reconciliation

The following is a reconciliation between the statutory Federal income tax rate of 35% and the effective rate which is derived by dividing the provision (benefit) for income taxes by income (loss) before for income taxes adjusted for permanent differences (in thousands):

	Year ended December 31,
	2013			2012			2011
Computed "expected" provision (benefit) for income taxes at the statutory rates adjusted for permanent differences	$	37,743		$	32,983		$	(14,683	)
Increase (decrease) in income taxes resulting from:
Purchase accounting (gain) adjustment		—			—			1,999
State income tax provision (benefit), net of Federal income tax benefit		2,867			2,220			(1,810	)
Valuation allowance changes affecting the provision for income taxes		1,430			1,614			—
Other, net		(2,464	)		(2,078	)		(8,341	)
Provision (benefit) for income taxes		39,576			34,739			(22,835	)

Schedule of components of the net deferred tax assets and liabilities

The significant components of the net deferred tax assets and liabilities are as follows (in thousands):

	As of December 31,
	2013			2012
Deferred tax assets:
Intangible Asset	$	36,164		$	37,031
Accrued benefits		40,850			40,469
Net operating loss carryforward		85,885			118,448
AMT credit carryforward		17,649			15,882
Deferred aircraft credits		44,350			48,124
Accrued reserves and other		30,987			31,846
Total deferred tax assets		255,885			291,800
Valuation allowance		(3,044	)		(1,614	)
Deferred tax liabilities:
Accelerated depreciation		(824,149	)		(823,487	)
Total deferred tax liabilities		(824,149	)		(823,487	)
Net deferred tax liability		(571,308	)		(533,301	)

XML

Stock Repurchase (Details) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Sep. 14, 2012
Stock Repurchase
Common stock authorized for repurchase, maximum (in shares)	25,000,000		6,514,266
Common stock repurchased (in shares)	800,000	100,000
Common stock repurchased, value	$ 11.7	$ 0.9
Weighted average price per share of common stock (in dollars per share)	$ 14.40	$ 15.32

XML

Commitments and Contingencies (Details 2) (SkyWest Airlines and ExpressJet v. Delta, USD $) In Millions, unless otherwise specified	1 Months Ended	12 Months Ended
	Dec. 31, 2007	Dec. 31, 2013	Dec. 31, 2010
SkyWest Airlines and ExpressJet v. Delta
Legal Matters
Amount of receivables withheld from weekly scheduled wire payments to SkyWest Airlines and Atlantic Southeast	$ 25
Withheld receivables recognized as revenue by the entity		31.7
Amount that the settlement offered by the reporting entity was less than the cumulative amount of withheld receivables recognized as revenue by the reporting entity			5.9
Receivables written off by the entity		5.9
Minimum amount of possible damages		0
Reasonably possible loss related to dispute, maximum		$ 25.8

XML

Long-term Debt (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Long-term Debt
Long-term debt	$ 1,470,568,000	$ 1,642,022,000
Less current maturities	(177,389,000)	(171,454,000)
Long-term debt, net of current maturities	1,293,179,000	1,470,568,000
Aggregate amounts of principal maturities of long-term debt
2014	177,389,000
2015	184,510,000
2016	188,240,000
2017	161,735,000
2018	139,020,000
Thereafter	619,674,000
Total	1,470,568,000	1,642,022,000
Letters of credit and surety bonds outstanding with various banks and surety institutions	88,500,000
CRJ
Long-term Debt
Long-term debt	1,500,000,000
Effective interest rate (as a percent)	4.50%
Aggregate amounts of principal maturities of long-term debt
Total	1,500,000,000
Notes payable to banks, due in semi-annual installments through 2014 to 2020
Long-term Debt
Interest rate, minimum (as a percent)	1.34%
Interest rate, maximum (as a percent)	2.55%
Long-term debt	224,915,000	273,515,000
Variable interest rate, basis	LIBOR
Aggregate amounts of principal maturities of long-term debt
Total	224,915,000	273,515,000
Notes payable to a financing company, due in semi-annual installments through 2014 to 2021
Long-term Debt
Interest rate, minimum (as a percent)	0.70%
Interest rate, maximum (as a percent)	2.36%
Long-term debt	392,660,000	434,716,000
Variable interest rate, basis	LIBOR
Aggregate amounts of principal maturities of long-term debt
Total	392,660,000	434,716,000
Notes payable to banks, due in semi-annual installments through 2021
Long-term Debt
Interest rate, minimum (as a percent)	6.06%
Interest rate, maximum (as a percent)	7.18%
Long-term debt	149,477,000	168,937,000
Aggregate amounts of principal maturities of long-term debt
Total	149,477,000	168,937,000
Notes payable to a financing company, due in semi-annual installments through 2019
Long-term Debt
Interest rate, minimum (as a percent)	5.78%
Interest rate, maximum (as a percent)	6.23%
Long-term debt	32,528,000	39,548,000
Aggregate amounts of principal maturities of long-term debt
Total	32,528,000	39,548,000
Notes payable to banks, due in monthly installments through 2025
Long-term Debt
Interest rate, minimum (as a percent)	3.15%
Interest rate, maximum (as a percent)	8.18%
Long-term debt	623,315,000	665,867,000
Aggregate amounts of principal maturities of long-term debt
Total	623,315,000	665,867,000
Notes payable to banks, due in semi-annual installments through 2020
Long-term Debt
Interest rate (as a percent)	6.05%
Long-term debt	15,740,000	17,872,000
Aggregate amounts of principal maturities of long-term debt
Total	15,740,000	17,872,000
Notes payable to a bank, due in monthly installments through 2016
Long-term Debt
Interest rate, minimum (as a percent)	2.00%
Interest rate, maximum (as a percent)	4.00%
Long-term debt	31,933,000	41,567,000
Variable interest rate, basis	LIBOR
Aggregate amounts of principal maturities of long-term debt
Total	31,933,000	41,567,000
Line of credit | SkyWest Airlines
Long-term Debt
Interest rate (as a percent)	3.00%
Variable interest rate, basis	Libor
Aggregate amounts of principal maturities of long-term debt
Maximum borrowing capacity	25,000,000	25,000,000
Amount outstanding	$ 0	$ 0

XML

Quarterly Financial Data (Unaudited) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Quarterly Financial Data (Unaudited)
Operating revenues	$ 804,368	$ 850,740	$ 839,130	$ 803,487	$ 810,726	$ 865,259	$ 937,214	$ 921,173	$ 3,297,725	$ 3,534,372	$ 3,654,923
Operating income	30,820	56,174	50,555	15,561	43,750	54,974	46,806	20,457	153,111	165,987	41,105
Net income (loss)	$ 8,609	$ 26,394	$ 20,720	$ 3,233	$ 13,946	$ 20,933	$ 16,960	$ (682)	$ 58,956	$ 51,157	$ (27,335)
Net income (loss) per common share:
Basic (in dollars per share)	$ 0.17	$ 0.51	$ 0.40	$ 0.06	$ 0.27	$ 0.41	$ 0.33	$ (0.01)	$ 1.14	$ 1.00	$ (0.52)
Diluted (in dollars per share)	$ 0.17	$ 0.50	$ 0.39	$ 0.06	$ 0.27	$ 0.40	$ 0.33	$ (0.01)	$ 1.12	$ 0.99	$ (0.52)
Weighted average common shares:
Basic (in shares)	51,228	51,881	51,881	51,763	51,296	51,241	50,944	50,881	51,688	51,090	52,201
Diluted (in shares)	52,034	52,610	52,547	52,497	52,161	52,153	51,789	50,881	52,422	51,746	52,201

XML

Capital Transactions (Details 2) (USD $)	12 Months Ended
	Dec. 31, 2013
$10 to $16
Stock options, exercise price
Exercise price range, low end of range (in dollars per share)	$ 10
Exercise price range, high end of range (in dollars per share)	$ 16
Options Outstanding
Number of options outstanding (in shares)	1,240,074
Options outstanding, Weighted Average Remaining Contractual Life	3 years 8 months 12 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 14.51
Options Exercisable
Number of options Exercisable (in shares)	650,963
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 15.00
$17 to $21
Stock options, exercise price
Exercise price range, low end of range (in dollars per share)	$ 17
Exercise price range, high end of range (in dollars per share)	$ 21
Options Outstanding
Number of options outstanding (in shares)	1,593,980
Options outstanding, Weighted Average Remaining Contractual Life	9 months 18 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 17.72
Options Exercisable
Number of options Exercisable (in shares)	1,593,980
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 17.72
$22 to $28
Stock options, exercise price
Exercise price range, low end of range (in dollars per share)	$ 22
Exercise price range, high end of range (in dollars per share)	$ 28
Options Outstanding
Number of options outstanding (in shares)	573,521
Options outstanding, Weighted Average Remaining Contractual Life	7 months 6 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 26.29
Options Exercisable
Number of options Exercisable (in shares)	573,521
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 26.29
$10 to $28
Stock options, exercise price
Exercise price range, low end of range (in dollars per share)	$ 10
Exercise price range, high end of range (in dollars per share)	$ 28
Options Outstanding
Number of options outstanding (in shares)	3,407,575
Options outstanding, Weighted Average Remaining Contractual Life	1 year 9 months 18 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 17.99
Options Exercisable
Number of options Exercisable (in shares)	2,818,464
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 18.83

XML

Segment Reporting

12 Months Ended

Dec. 31, 2013

Segment Reporting

Segment Reporting

(2) Segment Reporting

        Generally accepted accounting principles require disclosures related to components of a company for which separate financial information is available to, and regularly evaluated by, the Company's chief operating decision maker ("CODM") when deciding how to allocate resources and in assessing performance.

        The Company's two operating segments consist of the operations conducted by its two subsidiaries, SkyWest Airlines and ExpressJet. On December 31, 2011, ExpressJet Delaware and Atlantic Southeast merged through the ExpressJet Combination. As a result of the ExpressJet Combination, ExpressJet became a reportable segment. Prior year amounts have been revised to conform to the current year segment presentation. The results of operation of ExpressJet Delaware and Atlantic Southeast for periods prior to the ExpressJet Combination are combined under the ExpressJet segment. Corporate overhead expense incurred by the Company is allocated to the operating expenses of its two operating subsidiaries.

        The following represents the Company's segment data for the years ended December 31, 2013, 2012 and 2011 (in thousands).

	Year ended December 31, 2013
	SkyWest Airlines		ExpressJet			Other			Consolidated
Operating revenues		1,827,568		1,466,341			3,816			3,297,725
Operating expense		1,644,129		1,494,302			6,183			3,144,614
Depreciation and amortization expense		155,667		89,338			—			245,005
Interest expense		43,920		21,034			3,704			68,658
Segment profit (loss)(1)		139,519		(48,995	)		(6,071	)		84,453
Identifiable intangible assets, other than goodwill		—		14,998			—			14,998
Total assets		2,532,431		1,700,788			—			4,233,219
Capital expenditures (including non-cash)		103,387		38,657			—			142,044

	Year ended December 31, 2012
	SkyWest Airlines		ExpressJet			Other		Consolidated
Operating revenues		1,930,149		1,593,527			10,696		3,534,372
Operating expense		1,774,876		1,588,400			5,109		3,368,385
Depreciation and amortization expense		153,915		98,043			—		251,958
Interest expense		49,208		23,582			4,590		77,380
Segment profit(1)		106,065		(18,455	)		997		88,607
Identifiable intangible assets, other than goodwill		—		17,248			—		17,248
Total assets		2,633,369		1,621,268			—		4,254,637
Capital expenditures (including non-cash)		74,636		20,204			—		94,840

	Year ended December 31, 2011
	SkyWest Airlines		ExpressJet			Other		Consolidated
Operating revenues		2,002,830		1,640,837			11,256		3,654,923
Operating expense		1,893,909		1,714,481			5,428		3,613,818
Depreciation and amortization expense		147,520		106,662			—		254,182
Interest expense		50,907		25,142			4,334		80,383
Segment profit(1)		58,014		(98,786	)		1,494		(39,278	)
Identifiable intangible assets, other than goodwill		—		19,497			—		19,497
Total assets		2,595,901		1,686,007			—		4,281,908
Capital expenditures (including non-cash)		166,998		32,758			—		199,756

(1)

Segment profit is operating income less interest expense

XML

Commitments and Contingencies (Details 3) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Commitments and Contingencies
Allowance for doubtful accounts	$ 94,000	$ 94,000
Concentration Risk and Significant Customers
Number of full-time equivalent employees	18,358
Atlantic southeast pilots and expressjet delaware pilots
Concentration Risk and Significant Customers
Number of employee group for joint bargaining agreement	2
Total revenues | Significant Customers | Delta, United, and Continental Combined
Concentration Risk and Significant Customers
Concentration risk (as a percent)	91.60%	94.80%	97.60%
Full-time equivalent employees | Employees represented by unions
Concentration Risk and Significant Customers
Concentration risk (as a percent)	49.00%
Full-time equivalent employees | Employees represented by unions | Atlantic Southeast Pilots
Concentration Risk and Significant Customers
Approximate Number of Active Employees	1,800
Full-time equivalent employees | Employees represented by unions | Atlantic Southeast Flight Attendants
Concentration Risk and Significant Customers
Approximate Number of Active Employees	1,075
Full-time equivalent employees | Employees represented by unions | Atlantic Southeast Flight Controllers
Concentration Risk and Significant Customers
Approximate Number of Active Employees	60
Full-time equivalent employees | Employees represented by unions | Atlantic Southeast Mechanics
Concentration Risk and Significant Customers
Approximate Number of Active Employees	700
Full-time equivalent employees | Employees represented by unions | Atlantic Southeast Stock Clerks
Concentration Risk and Significant Customers
Approximate Number of Active Employees	70
Full-time equivalent employees | Employees represented by unions | ExpressJet Delaware Pilots
Concentration Risk and Significant Customers
Approximate Number of Active Employees	2,900
Full-time equivalent employees | Employees represented by unions | ExpressJet Delaware Flight Attendants
Concentration Risk and Significant Customers
Approximate Number of Active Employees	1,200
Full-time equivalent employees | Employees represented by unions | ExpressJet Delaware Mechanics
Concentration Risk and Significant Customers
Approximate Number of Active Employees	1,000
Full-time equivalent employees | Employees represented by unions | ExpressJet Delaware Dispatchers
Concentration Risk and Significant Customers
Approximate Number of Active Employees	85
Full-time equivalent employees | Employees represented by unions | ExpressJet Delaware Stock Clerks
Concentration Risk and Significant Customers
Approximate Number of Active Employees	100

XML

Retirement Plans and Employee Stock Purchase Plans (Tables)

12 Months Ended

Dec. 31, 2013

Retirement Plans and Employee Stock Purchase Plans

Schedule of purchases made under the 2009 Employee Stock Purchase Plans

	Year Ended December 31,
	2013		2012		2011
Number of shares purchased		299,786		487,451		300,177
Average price of shares purchased	$	12.33	$	8.35	$	14.56

XML

Capital Transactions (Tables)

12 Months Ended

Dec. 31, 2013

Capital Transactions

Schedule of assumptions used and weighted average fair value for grants

	2013			2012			2011
Expected annual dividend rate		1.21	%		1.23	%		1.04	%
Risk-free interest rate		0.92	%		0.81	%		2.08	%
Average expected life (years)		6.0			5.6			5.8
Expected volatility of common stock		0.446			0.409			0.404
Forfeiture rate		0.0	%		0.0	%		0.0	%
Weighted average fair value of option grants	$	5.04		$	4.43		$	5.74

Schedule of restricted stock activity

	Number of Shares			Weighted-Average Grant-Date Fair Value
Non-vested shares outstanding at December 31, 2010		659,263			18.97
Granted		249,502			15.51
Vested		(238,848	)		25.80
Cancelled		(58,315	)		15.71
Non-vested shares outstanding at December 31, 2011		611,602			15.08
Granted		318,139			13.04
Vested		(212,841	)		14.95
Cancelled		(18,015	)		14.20
Non-vested shares outstanding at December 31, 2012		698,885			14.21
Granted		312,104			13.41
Vested		(231,465	)		14.35
Cancelled		(45,933	)		13.69
Non-vested shares outstanding at December 31, 2013		733,591			13.79

Schedule of stock option activity

	2013									2012					2011
	Number of Options			Weighted Average Exercise Price		Weighted Average Remaining Contractual Term		Aggregate Intrinsic Value ($000)		Number of Options			Weighted Average Exercise Price		Number of Options			Weighted Average Exercise Price
Outstanding at beginning of year		3,653,859		$	18.44		2.3 years	$	—		4,176,673		$	19.26		4,586,979		$	19.96
Granted		173,560			13.24						200,115			13.06		327,617			15.45
Exercised		(75,080	)		10.91						(179,204	)		10.57		(5,941	)		10.57
Cancelled		(344,764	)		20.67						(543,725	)		25.35		(731,982	)		24.73
Outstanding at end of year		3,407,575			17.99		1.8 years		—		3,653,859			18.44		4,176,673			19.26
Exercisable at December 31, 2013		2,818,464			18.83		1.1 years		—
Exercisable at December 31, 2012		3,031,825			19.28		1.8 years		—

Schedule of non-vested stock options

The following table summarizes the status of the Company's non-vested stock options as of December 31, 2013:

	Number of Shares			Weighted-Average Grant-Date Fair Value
Non-vested shares at beginning of year		622,034		$	4.99
Granted		173,560			5.04
Vested		(206,483	)		4.78
Cancelled		—			—
Non-vested shares at end of year		589,111			5.07

Schedule of stock options outstanding

The following table summarizes information about the Company's stock options outstanding at December 31, 2013:

	Options Outstanding						Options Exercisable
Range of Exercise Prices	Number Outstanding		Weighted Average Remaining Contractual Life		Weighted Average Exercise Price		Number Exercisable		Weighted Average Exercise Price
$10 to $16		1,240,074		3.7 years	$	14.51		650,963	$	15.00
$17 to $21		1,593,980		0.8 years		17.72		1,593,980		17.72
$22 to $28		573,521		0.6 years		26.29		573,521		26.29
$10 to $28		3,407,575		1.8 years		17.99		2,818,464		18.83

XML

Fair Value Measurements (Details) (USD $) In Thousands, unless otherwise specified			12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013 Auction rate securities	Dec. 31, 2013 Recurring Fair value	Dec. 31, 2012 Recurring Fair value	Dec. 31, 2013 Recurring Fair value Bonds	Dec. 31, 2012 Recurring Fair value Bonds	Dec. 31, 2012 Recurring Fair value Commercial paper	Dec. 31, 2013 Recurring Fair value Asset backed securities	Dec. 31, 2012 Recurring Fair value Asset backed securities	Dec. 31, 2013 Recurring Level 1	Dec. 31, 2012 Recurring Level 1	Dec. 31, 2013 Recurring Level 2	Dec. 31, 2012 Recurring Level 2	Dec. 31, 2013 Recurring Level 2 Bonds	Dec. 31, 2012 Recurring Level 2 Bonds	Dec. 31, 2012 Recurring Level 2 Commercial paper	Dec. 31, 2013 Recurring Level 2 Asset backed securities	Dec. 31, 2012 Recurring Level 2 Asset backed securities	Dec. 31, 2013 Recurring Level 3	Dec. 31, 2012 Recurring Level 3
Fair Value Measurements
Marketable securities	$ 487,239	$ 556,117		$ 487,239	$ 556,117	$ 487,049	$ 552,289	$ 3,514	$ 190	$ 314			$ 487,239	$ 556,117	$ 487,049	$ 552,289	$ 3,514	$ 190	$ 314
Cash, Cash Equivalents and Restricted Cash				182,855	153,325						182,855	153,325
Other Assets				2,245	3,844															2,245	3,844
Total Assets Measured at Fair Value				672,339	713,286						182,855	153,325	487,239	556,117						2,245	3,844
Changes in assets measured at fair value on a recurring basis using significant unobservable inputs (level 3)
Balance at the beginning of the period			3,844
Total realized and unrealized gains or (losses) Included in other comprehensive income			(71)
Settlements			(1,528)
Balance at the end of the period			$ 2,245

XML

Quarterly Financial Data (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2013

Quarterly Financial Data (Unaudited)

Schedule of Quarterly Financial Data (Unaudited)

Unaudited summarized financial data by quarter for 2013 and 2012 is as follows (in thousands, except per share data):

	Year Ended December 31, 2013
	First Quarter		Second Quarter		Third Quarter		Fourth Quarter		Year
Operating revenues	$	803,487	$	839,130	$	850,740	$	804,368	$	3,297,725
Operating income		15,561		50,555		56,174		30,820		153,111
Net income (loss)		3,233		20,720		26,394		8,609		58,956
Net income (loss) per common share:
Basic		0.06		0.40		0.51		0.17		1.14
Diluted		0.06		0.39		0.50		0.17		1.12
Weighted average common shares:
Basic:		51,763		51,881		51,881		51,228		51,688
Diluted:		52,497		52,547		52,610		52,034		52,422

	Year Ended December 31, 2012
	First Quarter			Second Quarter		Third Quarter		Fourth Quarter		Year
Operating revenues	$	921,173		$	937,214	$	865,259	$	810,726	$	3,534,372
Operating income		20,457			46,806		54,974		43,750		165,987
Net income (loss)		(682	)		16,960		20,933		13,946		51,157
Net income (loss) per common share:
Basic		(0.01	)		0.33		0.41		0.27		1.00
Diluted		(0.01	)		0.33		0.40		0.27		0.99
Weighted average common shares:
Basic:		50,881			50,944		51,241		51,296		51,090
Diluted:		50,881			51,789		52,153		52,161		51,746

XML

Nature of Operations and Summary of Significant Accounting Policies (Details)	12 Months Ended
	Dec. 31, 2013 item
Nature of Operations and Summary of Significant Accounting Policies
Number of daily departures to different destinations	4,000
Agreements with other airlines
Number of aircrafts held by entity	757
United
Agreements with other airlines
Number of aircrafts held by entity	449
Percentage of aggregate capacity operated	60.90%
Delta
Agreements with other airlines
Number of aircrafts held by entity	254
Percentage of aggregate capacity operated	33.60%
American
Agreements with other airlines
Number of aircrafts held by entity	23
Percentage of aggregate capacity operated	2.60%
US Airways
Agreements with other airlines
Number of aircrafts held by entity	15
Percentage of aggregate capacity operated	1.60%
Alaska
Agreements with other airlines
Number of aircrafts held by entity	7
Percentage of aggregate capacity operated	1.30%
Subleased to an un-affiliated entity
Agreements with other airlines
Number of aircrafts held by entity	2
Unassigned
Agreements with other airlines
Number of aircrafts held by entity	7
CRJ 200
Agreements with other airlines
Number of aircrafts held by entity	260
CRJ 200 | United
Agreements with other airlines
Number of aircrafts held by entity	92
CRJ 200 | Delta
Agreements with other airlines
Number of aircrafts held by entity	125
CRJ 200 | American
Agreements with other airlines
Number of aircrafts held by entity	23
CRJ 200 | US Airways
Agreements with other airlines
Number of aircrafts held by entity	11
CRJ 200 | Subleased to an un-affiliated entity
Agreements with other airlines
Number of aircrafts held by entity	2
CRJ 200 | Unassigned
Agreements with other airlines
Number of aircrafts held by entity	7
ERJ145
Agreements with other airlines
Number of aircrafts held by entity	242
ERJ145 | United
Agreements with other airlines
Number of aircrafts held by entity	242
ERJ135
Agreements with other airlines
Number of aircrafts held by entity	9
ERJ135 | United
Agreements with other airlines
Number of aircrafts held by entity	9
CRJ700
Agreements with other airlines
Number of aircrafts held by entity	137
CRJ700 | United
Agreements with other airlines
Number of aircrafts held by entity	70
CRJ700 | Delta
Agreements with other airlines
Number of aircrafts held by entity	60
CRJ700 | Alaska
Agreements with other airlines
Number of aircrafts held by entity	7
CRJ 900
Agreements with other airlines
Number of aircrafts held by entity	64
CRJ 900 | Delta
Agreements with other airlines
Number of aircrafts held by entity	60
CRJ 900 | US Airways
Agreements with other airlines
Number of aircrafts held by entity	4
EMB 120
Agreements with other airlines
Number of aircrafts held by entity	45
EMB 120 | United
Agreements with other airlines
Number of aircrafts held by entity	36
EMB 120 | Delta
Agreements with other airlines
Number of aircrafts held by entity	9

XML

Nature of Operations and Summary of Significant Accounting Policies

12 Months Ended

Dec. 31, 2013

Nature of Operations and Summary of Significant Accounting Policies

Nature of Operations and Summary of Significant Accounting Policies

(1) Nature of Operations and Summary of Significant Accounting Policies

        SkyWest, Inc. (the "Company"), through its subsidiaries, SkyWest Airlines, Inc. ("SkyWest Airlines") and ExpressJet Airlines, Inc. ("ExpressJet") operates the largest regional airline in the United States. As of December 31, 2013, SkyWest and ExpressJet offered scheduled passenger and air freight service with approximately 4,000 total daily departures to different destinations in the United States, Canada, Mexico and the Caribbean. Additionally, the Company provides ground handling services for other airlines throughout its system. As of December 31, 2013, the Company had a combined fleet of 757 aircraft consisting of the following:

	CRJ200		ERJ145		ERJ135		CRJ700		CRJ900		EMB120		Total
United		92		242		9		70		—		36		449
Delta		125		—		—		60		60		9		254
American		23		—		—		—		—		—		23
US Airways		11		—		—		—		4		—		15
Alaska		—		—		—		7		—		—		7
Subleased to an un-affiliated entity		2		—		—		—		—		—		2
Unassigned		7		—		—		—		—		—		7
Total		260		242		9		137		64		45		757

        For the year ended December 31, 2013, approximately 60.9% of the Company's aggregate capacity was operated for United, approximately 33.6% was operated for Delta approximately 1.3% was operated for Alaska, approximately 1.6% was operated for US Airways and approximately 2.6% was operated for American.

        SkyWest Airlines has been a code-share partner with Delta in Salt Lake City and United in Los Angeles since 1987 and 1997, respectively. In 1998, SkyWest Airlines expanded its relationship with United to provide service in Portland, Seattle/Tacoma, San Francisco and additional Los Angeles markets. In 2004, SkyWest Airlines expanded its United Express operations to provide service in Chicago. In May 2011, SkyWest Airlines entered into a capacity purchase agreement with Alaska. In November 2011, SkyWest Airlines entered into a code share agreement with US Airways. In September, 2012, SkyWest Airlines and ExpressJet entered into code share agreements (the "American Agreements") with American Airlines, Inc. ("American"). As of December 31, 2013, SkyWest Airlines operated as a Delta Connection carrier in Salt Lake City and Minneapolis, a United Express carrier in Los Angeles, San Francisco, Denver, Houston, Chicago and the Pacific Northwest, an Alaska carrier in Seattle/ Tacoma and Portland, a US Airways carrier in Phoenix and an American carrier in Los Angeles.

        On November 17, 2011, the Company's wholly-owned subsidiaries, Atlantic Southeast Airlines, Inc. and ExpressJet Airlines, Inc., consolidated their operations under a single operating certificate, and on December 31, 2011, Atlantic Southeast Airlines, Inc. and ExpressJet Airlines, Inc. were merged, with the surviving corporation named ExpressJet Airlines, Inc. (the "ExpressJet Combination"). In the following Notes to Consolidated Financial Statements, "Atlantic Southeast" refers to Atlantic Southeast Airlines, Inc. for periods prior to the ExpressJet Combination, "ExpressJet Delaware" refers to ExpressJet Airlines, Inc., a Delaware corporation, for periods prior to the ExpressJet Combination, and "ExpressJet" refers to ExpressJet Airlines, Inc., the Utah corporation resulting from the combination of Atlantic Southeast and ExpressJet Delaware, for periods subsequent to the ExpressJet Combination. At the time of the ExpressJet Combination, Atlantic Southeast had been a code-share partner with Delta in Atlanta since 1984 and a code-share partner with United since February 2010. As of December 31, 2013, ExpressJet operated as a Delta Connection carrier in Atlanta and Detroit and a United Express carrier in Chicago (O'Hare), Washington, D.C. (Dulles International Airport), Cleveland, Newark, Houston and Denver.

Basis of Presentation

        The Company's consolidated financial statements include the accounts of SkyWest, Inc. and its subsidiaries, including SkyWest Airlines and ExpressJet, with all inter-company transactions and balances having been eliminated.

        In preparing the accompanying consolidated financial statements, the Company has reviewed, as determined necessary by the Company's management, events that have occurred after December 31, 2013, up until the filing of the Company's annual report with the U.S. Securities and Exchange Commission.

Use of Estimates

        The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

Cash and Cash Equivalents

        The Company considers all highly liquid investments with an original maturity of three months or less to be cash equivalents. The Company classified $12.2 million and $19.6 million of cash as restricted cash as required by the Company's workers' compensation policy and classified it accordingly in the consolidated balance sheets as of December 31, 2013 and 2012, respectively.

Marketable Securities

        The Company's investments in marketable debt and equity securities are deemed by management to be available for sale and are reported at fair market value with the net unrealized appreciation (depreciation) reported as a component of accumulated other comprehensive income in stockholders' equity. At the time of sale, any realized appreciation or depreciation, calculated by the specific identification method, is recognized in other income and expense. The Company's position in marketable securities as of December 31, 2013 and 2012 was as follows (in thousands):

	2013				2012
Investment Types	Cost		Market Value		Cost		Market Value
Commercial paper	$	—	$	—	$	3,510	$	3,514
Bond and bond funds		489,071		489,294		555,603		556,133
Asset backed securities		182		190		296		314
		489,253		489,484		559,409		559,961
Unrealized appreciation		231		—		552		—
Total		489,484		489,484	$	559,961	$	559,961

        Marketable securities had the following maturities as of December 31, 2013 (in thousands):

Maturities	Amount
Year 2014	$	304,353
Years 2015 through 2018		182,873
Years 2019 through 2023		—
Thereafter		2,258

        As of December 31, 2013, the Company had classified $487.2 million of marketable securities as short-term since it has the intent to maintain a liquid portfolio and the ability to redeem the securities within one year. The Company has classified approximately $2.2 million of investments as non-current and has identified them as "Other assets" in the Company's consolidated balance sheet as of December 31, 2013 (see Note 7).

Inventories

        Inventories include expendable parts, fuel and supplies and are valued at cost (FIFO basis) less an allowance for obsolescence based on historical results and management's expectations of future operations. Expendable inventory parts are charged to expense as used. An obsolescence allowance for flight equipment expendable parts is accrued based on estimated lives of the corresponding fleet types and salvage values. The inventory allowance as of December 31, 2013 and 2012 was $10.1 million and $9.2 million, respectively. These allowances are based on management estimates, which are subject to change.

Property and Equipment

        Property and equipment are stated at cost and depreciated over their useful lives to their estimated residual values using the straight-line method as follows:

Assets	Depreciable Life	Residual Value
Aircraft and rotable spares	10 - 18 years	0 - 30%
Ground equipment	5 - 10 years	0%
Office equipment	5 - 7 years	0%
Leasehold improvements	15 years or life of the lease	0%
Buildings	20 - 39.5 years	0%

Impairment of Long Lived Assets

        As of December 31, 2013, the Company had approximately $2.7 billion of property and equipment and related assets. Additionally, as of December 31, 2013, the Company had approximately $15.0 million in intangible assets. In accounting for these long-lived and intangible assets, the Company makes estimates about the expected useful lives of the assets, the expected residual values of certain of these assets, and the potential for impairment based on the fair value of the assets and the cash flows they generate. On September 7, 2005, the Company completed the acquisition of all of the issued and outstanding capital stock of Atlantic Southeast and recorded an intangible asset of approximately $33.7 million relating to the acquisition. The intangible asset is being amortized over fifteen years under the straight-line method. As of December 31, 2013 and 2012, the Company had $18.7 million and $16.5 million in accumulated amortization expense, respectively. Factors indicating potential impairment include, but are not limited to, significant decreases in the market value of the long-lived assets, a significant change in the condition of the long-lived assets and operating cash flow losses associated with the use of the long-lived assets. On a periodic basis, the Company evaluates whether impairment indicators are present. When considering whether or not impairment of long-lived assets exists, we group similar assets together at the lowest level for which identifiable cash flows are largely independent of the cash flows of other assets and liabilities and compare the undiscounted cash flows for each asset group to the net carrying amount of the assets supporting the asset group. Asset groupings are done at the fleet or contract level. The Company did not recognize any impairments of long-lived assets during 2013, 2012, or 2011.

Capitalized Interest

        Interest is capitalized on aircraft purchase deposits as a portion of the cost of the asset and is depreciated over the estimated useful life of the asset. During the years ended December 31, 2013, 2012 and 2011, the Company capitalized interest costs of approximately $1.2 million, $0, and $0, respectively.

Maintenance

        The Company operates under an FAA-approved continuous inspection and maintenance program. The Company uses the direct expense method of accounting for its regional jet engine overhauls wherein the expense is recorded when the overhaul event occurs. The Company has an engine services agreement with a third party vendor to provide long-term engine services covering the scheduled and unscheduled repairs for certain of its Bombardier CRJ700 Regional Jets ("CRJ700s") and Embraer S.A. ("Embraer") ERJ145 regional jet ("ERJ 145") aircraft. Under the terms of the agreement, the Company pays a set dollar amount per engine hour flown on a monthly basis and the third party vendor will assume the responsibility to repair the engines at no additional cost to the Company, subject to certain specified exclusions. Maintenance costs under these contracts are recognized when the engine hour is flown pursuant to the terms of the contract. The Company uses the "deferral method" of accounting for its Embraer Brasilia EMB-120 turboprop aircraft ("Brasilia turboprop") engine overhauls wherein the overhaul costs are capitalized and depreciated to the next estimated overhaul event. The costs of maintenance for airframe and avionics components, landing gear and normal recurring maintenance are expensed as incurred. For leased aircraft, the Company is subject to lease return provisions that require a minimum portion of the "life" of an overhaul be remaining on the engine at the lease return date. For Brasilia turboprop engine overhauls related to leased aircraft to be returned, the Company adjusts the estimated useful lives of the final engine overhauls based on the shorter of the remaining useful life or the respective lease return dates.

Passenger and Ground Handling Revenues

        The Company recognizes passenger and ground handling revenues when the service is provided. Under the Company's contract and pro-rate flying agreements with Delta, United, US Airways, American and Alaska, revenue is considered earned when the flight is completed. Revenue is recognized under the Company's pro-rate flying agreements based upon the portion of the pro-rate passenger fare the Company anticipates that it will receive. Other ancillary revenues commonly associated with airlines such as baggage fee revenue, ticket change fee revenue and the marketing component of the sale of mileage credits are retained by the Company's major airline partners on flights that the Company operates under its code-share agreements.

        In the event that the contractual rates under the agreements have not been finalized at quarterly or annual financial statement dates, the Company records revenues based on the lower of prior period's approved rates, as adjusted to reflect any contract negotiations and the Company's estimate of rates that will be implemented in accordance with revenue recognition guidelines.

        In the event the Company has a reimbursement dispute with a major partner, the Company evaluates the dispute under its established revenue recognition criteria and, provided the revenue recognition criteria have been met, the Company recognizes revenue based on management's estimate of the resolution of the dispute.

        In several of the Company's agreements, the Company is eligible for incentive compensation upon the achievement of certain performance criteria. The incentives are defined in the agreements and are being measured and determined on a monthly, quarterly or semi-annual basis. At the end of period, the Company calculates the incentives achieved during that period and recognizes revenue accordingly.

        The following summarizes the significant provision of each code share agreement the Company has with each major partner:

Delta Connection Agreements

Agreement	Number of aircraft under contract	Term / Termination Dates	Pass through costs or costs paid directly by major partner	Performance Incentive Structure	Payment Structure
SkyWest Airlines Delta Connection Agreement	• CRJ 200 - 41 • CRJ700 - 19 • CRJ 900 - 32	• The contract expires on an individual aircraft basis beginning in 2014 • The final aircraft expires in 2022 • The average remaining term of the aircraft under contract is 5.8 years • Upon expiration, aircraft may be renewed or extended	• Fuel • Engine Maintenance • Landing fees, Station Rents, Deice • Insurance	• No financial performance based incentives	• Rate per block hour, per departure and per aircraft under contract
ExpressJet Delta Connection Agreement	• CRJ 200 - 76 • CRJ700 - 41 • CRJ 900 - 28	• The contract expires on an individual aircraft basis beginning in 2014 • The final aircraft expires in 2022 • The average remaining term of the aircraft under contract is 4.4 years • Upon expiration, aircraft may be renewed or extended	• Fuel • Engine Maintenance • Landing fees, Station Rents, Deice Insurance	• Performance based financial incentives	• Rate per block hour, per departure and per aircraft under contract
SkyWest Airlines Prorate Agreement	• EMB 120 - 9 • CRJ200 - 8	• Terminate with 120 days notice	• None	• None	• Pro-rata sharing of the passenger fare revenue

SkyWest Airlines and ExpressJet are each parties to a Delta Connection Agreement with Delta, pursuant to which SkyWest Airlines and ExpressJet provide contract flight services for Delta. The SkyWest Airlines and ExpressJet Delta Connection Agreements contain multi-year rate reset provisions beginning in 2010 and continuing each 5th year thereafter. The Delta Connection Agreements also provide that, beginning with the fifth anniversary of the execution of the agreements (September 8, 2010), Delta has the right to require that certain contractual rates under those agreements shall not exceed the second lowest of all carriers within the Delta Connection program. During the fourth quarter of 2010, SkyWest Airlines and ExpressJet reached an agreement with Delta on contractual rates satisfying the 2010 rate reset provision and the second-lowest rate provision and agreed to rates through December 31, 2015. Delta additionally waived its right to require that the contractual rates payable under the Delta Connection Agreements shall not exceed the second-lowest rates of all carriers within the Delta Connection program through December 31, 2015.

United Express Agreements

Agreement	Number of aircraft under contract	Term / Termination Dates	Pass through costs or costs paid directly by major partner	Performance Incentive Structure	Payment Structure
SkyWest Airlines United Express Agreement	• CRJ 200 - 61 • CRJ700 - 70 • EMB 120 - 9	• The contract expires on an individual aircraft basis beginning in 2014 • The final aircraft expires in 2024 • The average remaining term of the aircraft under contract is 3.8 years • Upon expiration, aircraft may be renewed or extended	• Fuel • Landing fees, Station Rents, Deice • Insurance	• Performance based incentives	• Rate per block hour, per departure and per aircraft under contract
Atlantic Southeast United Express Agreement	• CRJ 200 - 14	• Terminates 2015 • Upon expiration, aircraft may be renewed or extended	• Fuel • Landing fees, Station Rents, Deice • Insurance	• Performance based incentives	• Rate per block hour, per departure and per aircraft under contract
ExpressJet Delaware United Express Agreement	• EMB 145 - 22	• Terminates 2015 • Upon expiration, aircraft may be renewed or extended	• Fuel • Landing fees, Station Rents, Deice • Insurance	• Performance based incentives	• Rate per block hour, per departure and per aircraft under contract
ExpressJet Delaware United Express Agreement	• EMB 135 - 9 • EMB 145 - 220	• The contract expires on an individual aircraft basis beginning in 2014 • The final aircraft expires in 2020 • The average remaining term of the aircraft under contract is 4.3 years • Upon expiration, aircraft may be renewed or extended	• Fuel • Engine Maintenance • Landing fees, Station Rents, Deice • Insurance	• Performance based incentives or penalties	• Rate per block hour, per departure and per aircraft under contract
SkyWest Airlines United Express Prorate Agreement	• CRJ200 - 17 • EMB 120 - 27	• Terminate with 120 days notice	• None	• None	• Pro-rata sharing of the passenger fare revenue

Alaska Capacity Purchase Agreement

Agreement	Number of aircraft under contract	Term / Termination Dates	Pass through costs or costs paid directly by major partner	Incentive Structure	Payment Structure
SkyWest Airlines Capacity Purchase Agreement	• CRJ 700 - 7	• Terminates 2018 • Upon expiration, aircraft may be renewed or extended	• Fuel • Landing fees, Station Rents, Deice • Insurance	• Performance based incentives	• Rate per block hour, per departure and per aircraft under contract

US Airways Express Agreement

Agreement	Number of aircraft under contract	Term / Termination Dates	Pass through costs or costs paid directly by major partner	Incentive Structure	Payment Structure
SkyWest Airlines US Airways Express Agreement	• CRJ200 - 10 • CRJ900 - 4	• Terminates 2015 • Upon expiration, aircraft may be renewed or extended	• Fuel • Landing fees, Station Rents, Deice • Insurance	• Performance based incentives	• Rate per block hour, per departure and per aircraft under contract
SkyWest Airlines US Airways Express Prorate Agreement	• CRJ200 - 1	• Terminate with 120 days notice	• None	• None	• Pro-rata sharing of the passenger fare revenue

American Agreement

Agreement	Number of aircraft under contract	Term / Termination Dates	Pass through costs or costs paid directly by major partner	Incentive Structure	Payment Structure
SkyWest Airlines American Capacity Purchase Agreement	• CRJ200 - 12	• Terminate 2016 • Upon expiration, aircraft may be renewed or extended	• Fuel • Landing fees, Station Rents, Deice • Insurance	• Performance based incentives	• Rate per block hour, per departure and per aircraft under contract
ExpressJet American Capacity Purchase Agreement	• CRJ200 - 11	• Terminates 2017 • Upon expiration, aircraft may be renewed or extended	• Fuel • Landing fees, Station Rents, Deice • Insurance	• Performance based incentives	• Rate per block hour, per departure and per aircraft under contract

Other Revenue Items

        The Company's passenger and ground handling revenues could be impacted by a number of factors, including changes to the Company's code-share agreements with Delta, United, Alaska, American or US Airways, contract modifications resulting from contract re-negotiations, the Company's ability to earn incentive payments contemplated under the Company's code-share agreements and settlement of reimbursement disputes with the Company's major partners.

        Under the Company's code-share agreements with Delta, United, Alaska, US Airways and American, the compensation structure generally consists of a combination of agreed-upon rates for operating flights and direct reimbursement for other certain costs associated with operating the aircraft. A portion of the Company's contract flying compensation is designed to reimburse the Company for certain aircraft ownership costs. The Company has concluded that a component of its revenue under these agreements is rental income, inasmuch as the agreements identify the "right of use" of a specific type and number of aircraft over a stated period of time. The amounts deemed to be rental income under the agreements for the years ended December 31, 2013, 2012 and 2011 were $500.2 million, $506.7 million and $521.3 million, respectively. These amounts were recorded as passenger revenue on the Company's consolidated statements of operations. The Company has not separately stated aircraft rental income and aircraft rental expense in the consolidated statement of comprehensive income (loss) since the use of the aircraft is not a separate activity of the total service provided and there is not a separate profitability measurement for the deemed rental activity of the aircraft.

Deferred Aircraft Credits

        The Company accounts for incentives provided by aircraft manufacturers as deferred credits. The deferred credits related to leased aircraft are amortized on a straight-line basis as a reduction to rent expense over the lease term. Credits related to owned aircraft reduce the purchase price of the aircraft, which has the effect of amortizing the credits on a straight-line basis as a reduction in depreciation expense over the life of the related aircraft. The incentives are credits that may be used to purchase spare parts and pay for training and other expenses.

Income Taxes

        The Company recognizes a liability or asset for the deferred tax consequences of all temporary differences between the tax basis of assets and liabilities and their reported amounts in the consolidated financial statements that will result in taxable or deductible amounts in future years when the reported amounts of the assets and liabilities are recovered or settled.

Net Income (Loss) Per Common Share

        Basic net income (loss) per common share ("Basic EPS") excludes dilution and is computed by dividing net income (loss) by the weighted average number of common shares outstanding during the period. Diluted net income (loss) per common share ("Diluted EPS") reflects the potential dilution that could occur if stock options or other contracts to issue common stock were exercised or converted into common stock. The computation of Diluted EPS does not assume exercise or conversion of securities that would have an anti-dilutive effect on net income (loss) per common share. During the years ended December 31, 2013, 2012 and 2011, 3,072,000, 3,889,000 and 4,323,000 shares reserved for issuance upon the exercise of outstanding options were excluded from the computation of Diluted EPS respectively, as their inclusion would be anti-dilutive.

        The calculation of the weighted average number of common shares outstanding for Basic EPS and Diluted EPS are as follows for the years ended December 31, 2013, 2012and 2011 (in thousands):

	Year Ended December 31,
	2013		2012		2011
Numerator:
Net Income (Loss)	$	58,956	$	51,157	$	(27,335	)
Denominator:
Denominator for basic earnings per-share weighted average shares		51,688		51,090		52,201
Dilution due to stock options and restricted stock		734		656		—
Denominator for diluted earnings per-share weighted average shares		52,422		51,746		52,201
Basic earnings (loss) per-share	$	1.14	$	1.00	$	(0.52	)
Diluted earnings (loss) per-share	$	1.12	$	0.99	$	(0.52	)

Comprehensive Income (Loss)

        Comprehensive income (loss) includes charges and credits to stockholders' equity that are not the result of transactions with the Company's shareholders. Also, comprehensive income (loss) consisted of net income (loss) plus changes in unrealized appreciation (depreciation) on marketable securities and unrealized gain (loss) on foreign currency translation adjustment related to the Company's equity investment in Trip Linhas Aereas, a regional airline operating in Brazil ("Trip") and Mekong Aviation Joint Stock Company, an airline operating in Vietnam ("Air Mekong") (see note 8), net of tax, for the periods indicated (in thousands):

	Year Ended December 31,
	2013			2012			2011
Net Income (Loss)	$	58,956			51,157		$	(27,335	)
Proportionate share of other companies foreign currency translation adjustment, net of tax		66			(251	)		(295	)
Unrealized appreciation (depreciation) on marketable securities, net of tax		(13	)		316			534
Comprehensive income (loss)	$	59,009		$	51,222		$	(27,096	)

Fair Value of Financial Instruments

        The carrying amounts reported in the consolidated balance sheets for receivables and accounts payable approximate fair values because of the immediate or short-term maturity of these financial instruments. Marketable securities are reported at fair value based on market quoted prices in the consolidated balance sheets. If quoted prices in active markets are no longer available and the Company has estimated the fair values of these securities utilizing a discounted cash flow analysis as of December 31, 2013. These analyses consider, among other items, the collateralization underlying the security investments, the creditworthiness of the counterparty, the timing of expected future cash flows, and the expectation of the next time the security is expected to have a successful auction. The fair value of the Company's long-term debt is estimated based on current rates offered to the Company for similar debt and was approximately $1,509.2 million as of December 31, 2013, as compared to the carrying amount of $1,470.6 million as of December 31, 2013. The Company's fair value of long-term debt as of December 31, 2012 was $1,744.2 million as compared to the carrying amount of $1,642.0 million as of December 31, 2012.

Segment Reporting

        Generally accepted accounting principles require disclosures related to components of a company for which separate financial information is available to, and regularly evaluated by, the Company's chief operating decision maker when deciding how to allocate resources and in assessing performance. The Company's two operating segments consist of the operations conducted by its two subsidiaries, SkyWest Airlines and ExpressJet. Information pertaining to the Company's reportable segments is presented in Note 2, Segment Reporting.

XML

Nature of Operations and Summary of Significant Accounting Policies (Details 2) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Cash and Cash Equivalents
Restricted cash	$ 12,219,000	$ 19,553,000
Marketable Securities
Cost	489,253,000	559,409,000
Unrealized appreciation	231,000	552,000
Total marketable securities	489,484,000	559,961,000
Maturities of marketable securities
Year 2014	304,353,000
Years 2015 through 2018	182,873,000
Thereafter	2,258,000
Marketable securities	487,200,000
Maximum period for redemption	1 year
Investment as non-current	2,200,000
Commercial paper
Marketable Securities
Cost		3,510,000
Total marketable securities		3,514,000
Bond and bond funds
Marketable Securities
Cost	489,071,000	555,603,000
Total marketable securities	489,294,000	556,133,000
Asset backed securities
Marketable Securities
Cost	182,000	296,000
Total marketable securities	$ 190,000	$ 314,000

XML

Income Taxes (Details 3) (USD $)	Dec. 31, 2013	Dec. 31, 2012
Net operating losses
Alternative minimum tax credit without expiration	$ 17,649,000	$ 15,882,000
Valuation allowance on acquired non-amortizable intangible tax assets and other tax assets	3,044,000	1,614,000
ExpressJet
Net operating losses
Valuation allowance on acquired non-amortizable intangible tax assets and other tax assets	69,800,000	73,000,000
Deferred tax assets for net operating losses in states with short carry-forward periods	1,000,000
Federal
Net operating losses
Operating loss carryforward	191,500,000
State
Net operating losses
Operating loss carryforward	$ 651,200,000

XML

SCHEDULE II-VALUATION AND QUALIFYING ACCOUNTS (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
VALUATION AND QUALIFYING ACCOUNTS
Balance at Beginning of Year	$ 9,283	$ 8,488	$ 7,588
Additions Charged to Costs and Expenses	949	941	900
Deductions		(146)
Balance at End of Year	10,232	9,283	8,488
Allowance for inventory obsolescence
VALUATION AND QUALIFYING ACCOUNTS
Balance at Beginning of Year	9,189	8,248	7,541
Additions Charged to Costs and Expenses	949	941	707
Balance at End of Year	10,138	9,189	8,248
Allowance for doubtful accounts receivable
VALUATION AND QUALIFYING ACCOUNTS
Balance at Beginning of Year		240	47
Additions Charged to Costs and Expenses			193
Deductions		(146)
Balance at End of Year	$ 94	$ 94	$ 240

XML

CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
CURRENT ASSETS:
Cash and cash equivalents	$ 170,636	$ 133,772
Marketable securities	487,239	556,117
Restricted cash	12,219	19,553
Income tax receivable	840
Receivables, net	111,186	130,102
Inventories, net	138,094	113,581
Prepaid aircraft rents	360,781	325,999
Deferred tax assets	156,050	124,320
Other current assets	27,392	30,596
Total current assets	1,464,437	1,434,040
PROPERTY AND EQUIPMENT:
Aircraft and rotable spares	4,080,886	3,997,926
Deposits on aircraft	40,000
Buildings and ground equipment	279,965	274,085
Total property and equipment, gross	4,400,851	4,272,011
Less-accumulated depreciation and amortization	(1,749,058)	(1,561,015)
Total property and equipment, net	2,651,793	2,710,996
OTHER ASSETS
Intangible assets, net	14,998	17,248
Other assets	101,991	92,353
Total other assets	116,989	109,601
Total assets	4,233,219	4,254,637
CURRENT LIABILITIES:
Current maturities of long-term debt	177,389	171,454
Accounts payable	245,518	222,671
Accrued salaries, wages and benefits	133,002	121,352
Accrued aircraft rents	7,492	12,745
Taxes other than income taxes	19,626	22,353
Income tax payable		1,255
Other current liabilities	37,437	39,595
Total current liabilities	620,464	591,425
OTHER LONG TERM LIABILITIES	76,305	57,422
LONG TERM DEBT, net of current maturities	1,293,179	1,470,568
DEFERRED INCOME TAXES PAYABLE	727,358	657,620
DEFERRED AIRCRAFT CREDITS	80,974	90,427
COMMITMENTS AND CONTINGENCIES (Note 6)
STOCKHOLDERS' EQUITY:
Preferred stock, 5,000,000 shares authorized; none issued
Common stock, no par value, 120,000,000 shares authorized; 77,325,702 and 76,713,154 shares issued, respectively	618,511	609,763
Retained earnings	1,197,819	1,147,117
Treasury stock, at cost, 26,095,636 and 25,280,364 shares, respectively	(382,950)	(371,211)
Accumulated other comprehensive income (Note 1)	1,559	1,506
Total stockholders' equity	1,434,939	1,387,175
Total liabilities and stockholders' equity	$ 4,233,219	$ 4,254,637

XML

Investment in Other Companies (Details) (USD $)	12 Months Ended			0 Months Ended	1 Months Ended	12 Months Ended	0 Months Ended			1 Months Ended	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013 TRIP	Jul. 12, 2012 TRIP Sale of interest item	Sep. 30, 2008 TRIP Common stock	Dec. 31, 2013 Trip Investimentos Ltda. item	Jul. 12, 2012 Trip Investimentos Ltda. Sale of interest Minimum	Jul. 12, 2012 Trip Investimentos Ltda. Sale of interest Maximum	Sep. 29, 2010 Air Mekong	Sep. 30, 2010 Air Mekong	Dec. 31, 2013 Air Mekong	Dec. 31, 2011 Air Mekong
Investment in other companies
Percentage ownership acquired					20.00%					30.00%
Company's investment balance			$ 19,100,000
Annual rate of return used to calculate the put option price (as a percent)			5.00%
Proceeds from sale of equity method investment	16,658,000	8,064,000		42,000,000		26,200,000
Number of installments				3		3
Period of payment under the purchase agreement				2 years
Option to acquire ownership (as a percent)				15.38%		15.38%
Option exercise period							2 years	4 years
Number of installment payments received						2
Third installment of equity interest sold						16,800,000
Payments to acquire equity method investment									7,000,000			3,000,000
Gain on sale of cost method investment											5,000,000
Other income recognized on termination of sub-lease with Air Mekong											$ 5,100,000

XML

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Parenthetical) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY
Proportionate share of other companies foreign currency translation adjustment, tax	$ 8	$ 154	$ 180
Net unrealized appreciation on marketable securities, tax	$ 43	$ 194	$ 327
Cash dividends declared (in dollars per share)	$ 0.16	$ 0.16	$ 0.16

XML

Nature of Operations and Summary of Significant Accounting Policies (Details 5) (USD $)	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013 segment	Dec. 31, 2012	Dec. 31, 2011
Other Revenue Items
Deemed rental income under code-share agreement									$ 500,200,000	$ 506,700,000	$ 521,300,000
Net Income (loss) Per Common Share
Number of outstanding options not included in computation of Diluted EPS (in shares)									3,072,000	3,889,000	4,323,000
Numerator
Net income (loss)	8,609,000	26,394,000	20,720,000	3,233,000	13,946,000	20,933,000	16,960,000	(682,000)	58,956,000	51,157,000	(27,335,000)
Denominator
Denominator for basic earnings per-share weighted average shares	51,228,000	51,881,000	51,881,000	51,763,000	51,296,000	51,241,000	50,944,000	50,881,000	51,688,000	51,090,000	52,201,000
Dilution due to stock options and restricted stock (in shares)									734,000	656,000
Denominator for diluted earnings per-share weighted average shares	52,034,000	52,610,000	52,547,000	52,497,000	52,161,000	52,153,000	51,789,000	50,881,000	52,422,000	51,746,000	52,201,000
Basic earnings (loss) per share (in dollars per share)	$ 0.17	$ 0.51	$ 0.40	$ 0.06	$ 0.27	$ 0.41	$ 0.33	$ (0.01)	$ 1.14	$ 1.00	$ (0.52)
Diluted earnings (loss) per share (in dollars per share)	$ 0.17	$ 0.50	$ 0.39	$ 0.06	$ 0.27	$ 0.40	$ 0.33	$ (0.01)	$ 1.12	$ 0.99	$ (0.52)
COMPREHENSIVE INCOME (LOSS):
Net Income (Loss)	8,609,000	26,394,000	20,720,000	3,233,000	13,946,000	20,933,000	16,960,000	(682,000)	58,956,000	51,157,000	(27,335,000)
Proportionate share of other companies foreign currency translation adjustment, net of tax									66,000	(251,000)	(295,000)
Unrealized appreciation (depreciation) on marketable securities, net of tax									(13,000)	316,000	534,000
TOTAL COMPREHENSIVE INCOME (LOSS)									59,009,000	51,222,000	(27,096,000)
Fair Value of Financial Instruments
Fair value of long-term debt	1,509,200,000				1,744,200,000				1,509,200,000	1,744,200,000
Carrying amount of long-term debt	$ 1,470,568,000				$ 1,642,022,000				$ 1,470,568,000	$ 1,642,022,000
Segment Reporting
Operating segments number									2
Number of operating subsidiaries representing operating segments									2
Delta Connection Agreements | ExpressJet
Agreements with other airlines
Term of agreement									4 years 4 months 24 days
Delta Connection Agreements | SkyWest Airlines, Inc.
Agreements with other airlines
Term of agreement									5 years 9 months 18 days
Delta Connection Agreements | CRJ 200 | ExpressJet
Agreements with other airlines
Number of aircraft under contract									76
Delta Connection Agreements | CRJ 200 | SkyWest Airlines, Inc.
Agreements with other airlines
Number of aircraft under contract									41
Delta Connection Agreements | CRJ700 | ExpressJet
Agreements with other airlines
Number of aircraft under contract									41
Delta Connection Agreements | CRJ700 | SkyWest Airlines, Inc.
Agreements with other airlines
Number of aircraft under contract									19
Delta Connection Agreements | CRJ 900 | ExpressJet
Agreements with other airlines
Number of aircraft under contract									28
Delta Connection Agreements | CRJ 900 | SkyWest Airlines, Inc.
Agreements with other airlines
Number of aircraft under contract									32
United Express Agreements | ExpressJet
Agreements with other airlines
Term of agreement									4 years 3 months 18 days
United Express Agreements | SkyWest Airlines, Inc.
Agreements with other airlines
Term of agreement									3 years 9 months 18 days
United Express Agreements | CRJ 200 | SkyWest Airlines, Inc.
Agreements with other airlines
Number of aircraft under contract									61
United Express Agreements | CRJ 200 | Atlantic Southeast Airlines,Inc.
Agreements with other airlines
Number of aircraft under contract									14
United Express Agreements | CRJ700 | SkyWest Airlines, Inc.
Agreements with other airlines
Number of aircraft under contract									70
United Express Agreements | EMB 120 | SkyWest Airlines, Inc.
Agreements with other airlines
Number of aircraft under contract									9
United Express Agreements | EMB 145 | ExpressJet
Agreements with other airlines
Number of aircraft under contract									22
United Express Agreements | EMB 135 | ExpressJet
Agreements with other airlines
Number of aircraft under contract									9
United Express Agreements | EMB 145 one | ExpressJet
Agreements with other airlines
Number of aircraft under contract									220
Prorate Agreement | SkyWest Airlines, Inc.
Agreements with other airlines
Notice period for termination of agreement									120 days
Prorate Agreement | CRJ 200 | SkyWest Airlines, Inc.
Agreements with other airlines
Number of aircraft under contract									8
Prorate Agreement | EMB 120 | SkyWest Airlines, Inc.
Agreements with other airlines
Number of aircraft under contract									9
United Express Prorate Agreement | SkyWest Airlines, Inc.
Agreements with other airlines
Notice period for termination of agreement									120 days
United Express Prorate Agreement | CRJ 200 | SkyWest Airlines, Inc.
Agreements with other airlines
Number of aircraft under contract									17
United Express Prorate Agreement | EMB 120 | SkyWest Airlines, Inc.
Agreements with other airlines
Number of aircraft under contract									27
Alaska Capacity Purchase Agreement | CRJ700 | SkyWest Airlines, Inc.
Agreements with other airlines
Number of aircraft under contract									7
US Airways Express Agreement | CRJ 200 | SkyWest Airlines, Inc.
Agreements with other airlines
Number of aircraft under contract									10
US Airways Express Agreement | CRJ 900 | SkyWest Airlines, Inc.
Agreements with other airlines
Number of aircraft under contract									4
US Airways Express Prorate Agreement | SkyWest Airlines, Inc.
Agreements with other airlines
Notice period for termination of agreement									120 days
US Airways Express Prorate Agreement | CRJ 200 | SkyWest Airlines, Inc.
Agreements with other airlines
Number of aircraft under contract									1
American Capacity Purchase Agreement | CRJ 200 | ExpressJet
Agreements with other airlines
Number of aircraft under contract									11
American Capacity Purchase Agreement | CRJ 200 | SkyWest Airlines, Inc.
Agreements with other airlines
Number of aircraft under contract									12

XML

Nature of Operations and Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2013

Nature of Operations and Summary of Significant Accounting Policies

Schedule of details of aircraft and agreements with other airlines

As of December 31, 2013, the Company had a combined fleet of 757 aircraft consisting of the following:

	CRJ200		ERJ145		ERJ135		CRJ700		CRJ900		EMB120		Total
United		92		242		9		70		—		36		449
Delta		125		—		—		60		60		9		254
American		23		—		—		—		—		—		23
US Airways		11		—		—		—		4		—		15
Alaska		—		—		—		7		—		—		7
Subleased to an un-affiliated entity		2		—		—		—		—		—		2
Unassigned		7		—		—		—		—		—		7
Total		260		242		9		137		64		45		757

Schedule of the Company's position in marketable securities

The Company's position in marketable securities as of December 31, 2013 and 2012 was as follows (in thousands):

	2013				2012
Investment Types	Cost		Market Value		Cost		Market Value
Commercial paper	$	—	$	—	$	3,510	$	3,514
Bond and bond funds		489,071		489,294		555,603		556,133
Asset backed securities		182		190		296		314
		489,253		489,484		559,409		559,961
Unrealized appreciation		231		—		552		—
Total		489,484		489,484	$	559,961	$	559,961

Schedule of maturities of marketable securities

 Marketable securities had the following maturities as of December 31, 2013 (in thousands):

Maturities	Amount
Year 2014	$	304,353
Years 2015 through 2018		182,873
Years 2019 through 2023		—
Thereafter		2,258

Schedule of property and equipment

Assets	Depreciable Life	Residual Value
Aircraft and rotable spares	10 - 18 years	0 - 30%
Ground equipment	5 - 10 years	0%
Office equipment	5 - 7 years	0%
Leasehold improvements	15 years or life of the lease	0%
Buildings	20 - 39.5 years	0%

Net income with per share data and comprehensive income

Schedule of net income (loss) per common share

The calculation of the weighted average number of common shares outstanding for Basic EPS and Diluted EPS are as follows for the years ended December 31, 2013, 2012and 2011 (in thousands):

	Year Ended December 31,
	2013		2012		2011
Numerator:
Net Income (Loss)	$	58,956	$	51,157	$	(27,335	)
Denominator:
Denominator for basic earnings per-share weighted average shares		51,688		51,090		52,201
Dilution due to stock options and restricted stock		734		656		—
Denominator for diluted earnings per-share weighted average shares		52,422		51,746		52,201
Basic earnings (loss) per-share	$	1.14	$	1.00	$	(0.52	)
Diluted earnings (loss) per-share	$	1.12	$	0.99	$	(0.52	)

Schedule of comprehensive income (loss)

Also, comprehensive income (loss) consisted of net income (loss) plus changes in unrealized appreciation (depreciation) on marketable securities and unrealized gain (loss) on foreign currency translation adjustment related to the Company's equity investment in Trip Linhas Aereas, a regional airline operating in Brazil ("Trip") and Mekong Aviation Joint Stock Company, an airline operating in Vietnam ("Air Mekong") (see note 8), net of tax, for the periods indicated (in thousands):

	Year Ended December 31,
	2013			2012			2011
Net Income (Loss)	$	58,956			51,157		$	(27,335	)
Proportionate share of other companies foreign currency translation adjustment, net of tax		66			(251	)		(295	)
Unrealized appreciation (depreciation) on marketable securities, net of tax		(13	)		316			534
Comprehensive income (loss)	$	59,009		$	51,222		$	(27,096	)

Delta Connection Agreements

Agreements with other airlines

Schedule of details of agreements with other airlines

Agreement	Number of aircraft under contract	Term / Termination Dates	Pass through costs or costs paid directly by major partner	Performance Incentive Structure	Payment Structure
SkyWest Airlines Delta Connection Agreement	• CRJ 200 - 41 • CRJ700 - 19 • CRJ 900 - 32	• The contract expires on an individual aircraft basis beginning in 2014 • The final aircraft expires in 2022 • The average remaining term of the aircraft under contract is 5.8 years • Upon expiration, aircraft may be renewed or extended	• Fuel • Engine Maintenance • Landing fees, Station Rents, Deice • Insurance	• No financial performance based incentives	• Rate per block hour, per departure and per aircraft under contract
ExpressJet Delta Connection Agreement	• CRJ 200 - 76 • CRJ700 - 41 • CRJ 900 - 28	• The contract expires on an individual aircraft basis beginning in 2014 • The final aircraft expires in 2022 • The average remaining term of the aircraft under contract is 4.4 years • Upon expiration, aircraft may be renewed or extended	• Fuel • Engine Maintenance • Landing fees, Station Rents, Deice Insurance	• Performance based financial incentives	• Rate per block hour, per departure and per aircraft under contract
SkyWest Airlines Prorate Agreement	• EMB 120 - 9 • CRJ200 - 8	• Terminate with 120 days notice	• None	• None	• Pro-rata sharing of the passenger fare revenue

United Express Agreements

Agreements with other airlines

Schedule of details of agreements with other airlines

Agreement	Number of aircraft under contract	Term / Termination Dates	Pass through costs or costs paid directly by major partner	Performance Incentive Structure	Payment Structure
SkyWest Airlines United Express Agreement	• CRJ 200 - 61 • CRJ700 - 70 • EMB 120 - 9	• The contract expires on an individual aircraft basis beginning in 2014 • The final aircraft expires in 2024 • The average remaining term of the aircraft under contract is 3.8 years • Upon expiration, aircraft may be renewed or extended	• Fuel • Landing fees, Station Rents, Deice • Insurance	• Performance based incentives	• Rate per block hour, per departure and per aircraft under contract
Atlantic Southeast United Express Agreement	• CRJ 200 - 14	• Terminates 2015 • Upon expiration, aircraft may be renewed or extended	• Fuel • Landing fees, Station Rents, Deice • Insurance	• Performance based incentives	• Rate per block hour, per departure and per aircraft under contract
ExpressJet Delaware United Express Agreement	• EMB 145 - 22	• Terminates 2015 • Upon expiration, aircraft may be renewed or extended	• Fuel • Landing fees, Station Rents, Deice • Insurance	• Performance based incentives	• Rate per block hour, per departure and per aircraft under contract
ExpressJet Delaware United Express Agreement	• EMB 135 - 9 • EMB 145 - 220	• The contract expires on an individual aircraft basis beginning in 2014 • The final aircraft expires in 2020 • The average remaining term of the aircraft under contract is 4.3 years • Upon expiration, aircraft may be renewed or extended	• Fuel • Engine Maintenance • Landing fees, Station Rents, Deice • Insurance	• Performance based incentives or penalties	• Rate per block hour, per departure and per aircraft under contract
SkyWest Airlines United Express Prorate Agreement	• CRJ200 - 17 • EMB 120 - 27	• Terminate with 120 days notice	• None	• None	• Pro-rata sharing of the passenger fare revenue

Alaska Capacity Purchase Agreement

Agreements with other airlines

Schedule of details of agreements with other airlines

Agreement	Number of aircraft under contract	Term / Termination Dates	Pass through costs or costs paid directly by major partner	Incentive Structure	Payment Structure
SkyWest Airlines Capacity Purchase Agreement	• CRJ 700 - 7	• Terminates 2018 • Upon expiration, aircraft may be renewed or extended	• Fuel • Landing fees, Station Rents, Deice • Insurance	• Performance based incentives	• Rate per block hour, per departure and per aircraft under contract

US Airways Express Agreement

Agreements with other airlines

Schedule of details of agreements with other airlines

Agreement	Number of aircraft under contract	Term / Termination Dates	Pass through costs or costs paid directly by major partner	Incentive Structure	Payment Structure
SkyWest Airlines US Airways Express Agreement	• CRJ200 - 10 • CRJ900 - 4	• Terminates 2015 • Upon expiration, aircraft may be renewed or extended	• Fuel • Landing fees, Station Rents, Deice • Insurance	• Performance based incentives	• Rate per block hour, per departure and per aircraft under contract
SkyWest Airlines US Airways Express Prorate Agreement	• CRJ200 - 1	• Terminate with 120 days notice	• None	• None	• Pro-rata sharing of the passenger fare revenue

American Agreement

Agreements with other airlines

Schedule of details of agreements with other airlines

Agreement	Number of aircraft under contract	Term / Termination Dates	Pass through costs or costs paid directly by major partner	Incentive Structure	Payment Structure
SkyWest Airlines American Capacity Purchase Agreement	• CRJ200 - 12	• Terminate 2016 • Upon expiration, aircraft may be renewed or extended	• Fuel • Landing fees, Station Rents, Deice • Insurance	• Performance based incentives	• Rate per block hour, per departure and per aircraft under contract
ExpressJet American Capacity Purchase Agreement	• CRJ200 - 11	• Terminates 2017 • Upon expiration, aircraft may be renewed or extended	• Fuel • Landing fees, Station Rents, Deice • Insurance	• Performance based incentives	• Rate per block hour, per departure and per aircraft under contract

XML

Segment Reporting (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013 segment	Dec. 31, 2012	Dec. 31, 2011
Segment Reporting
Operating segments number									2
Number of operating subsidiaries representing operating segments									2
Segment Reporting
Operating revenues	$ 804,368	$ 850,740	$ 839,130	$ 803,487	$ 810,726	$ 865,259	$ 937,214	$ 921,173	$ 3,297,725	$ 3,534,372	$ 3,654,923
Operating expense									3,144,614	3,368,385	3,613,818
Depreciation and amortization expense									245,005	251,958	254,182
Interest expense									68,658	77,380	80,383
Segment profit (loss)									84,453	88,607	(39,278)
Identifiable intangible assets, other than goodwill	14,998				17,248				14,998	17,248	19,497
Total assets	4,233,219				4,254,637				4,233,219	4,254,637	4,281,908
Capital expenditures (including non - cash)									142,044	94,840	199,756
SkyWest
Segment Reporting
Operating revenues									1,827,568	1,930,149	2,002,830
Operating expense									1,644,129	1,774,876	1,893,909
Depreciation and amortization expense									155,667	153,915	147,520
Interest expense									43,920	49,208	50,907
Segment profit (loss)									139,519	106,065	58,014
Total assets	2,532,431				2,633,369				2,532,431	2,633,369	2,595,901
Capital expenditures (including non - cash)									103,387	74,636	166,998
ExpressJet
Segment Reporting
Operating revenues									1,466,341	1,593,527	1,640,837
Operating expense									1,494,302	1,588,400	1,714,481
Depreciation and amortization expense									89,338	98,043	106,662
Interest expense									21,034	23,582	25,142
Segment profit (loss)									(48,995)	(18,455)	(98,786)
Identifiable intangible assets, other than goodwill	14,998				17,248				14,998	17,248	19,497
Total assets	1,700,788				1,621,268				1,700,788	1,621,268	1,686,007
Capital expenditures (including non - cash)									38,657	20,204	32,758
Other
Segment Reporting
Operating revenues									3,816	10,696	11,256
Operating expense									6,183	5,109	5,428
Interest expense									3,704	4,590	4,334
Segment profit (loss)									$ (6,071)	$ 997	$ 1,494

XML

Long-term Debt (Tables)

12 Months Ended

Dec. 31, 2013

Long-term Debt

Schedule of long-term debt

Long-term debt consisted of the following as of December 31, 2013 and 2012 (in thousands):

	December 31, 2013			December 31, 2012
Notes payable to banks, due in semi-annual installments, variable interest based on LIBOR, or with interest rates ranging from 1.34% to 2.55% through 2014 to 2020, secured by aircraft	$	224,915		$	273,515
Notes payable to a financing company, due in semi-annual installments, variable interest based on LIBOR, or with interest rates ranging from 0.70% to 2.36% through 2014 to 2021, secured by aircraft		392,660			434,716
Notes payable to banks, due in semi-annual installments plus interest at 6.06% to 7.18% through 2021, secured by aircraft		149,477			168,937
Notes payable to a financing company, due in semi-annual installments plus interest at 5.78% to 6.23% through 2019, secured by aircraft		32,528			39,548
Notes payable to banks, due in monthly installments plus interest of 3.15% to 8.18% through 2025, secured by aircraft		623,315			665,867
Notes payable to banks, due in semi-annual installments, plus interest at 6.05% through 2020, secured by aircraft		15,740			17,872
Notes payable to a bank, due in monthly installments interest based on LIBOR plus interest at 2.00% to 4.00% through 2016, secured by aircraft		31,933			41,567
Long-term debt		1,470,568			1,642,022
Less current maturities		(177,389	)		(171,454	)
Long-term debt, net of current maturities		1,293,179			1,470,568

Schedule of maturities of long-term debt

The aggregate amounts of principal maturities of long-term debt as of December 31, 2013 were as follows (in thousands):

2014	177,389
2015	184,510
2016	188,240
2017	161,735
2018	139,020
Thereafter	619,674
	1,470,568

XML

CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)	$ 58,956	$ 51,157	$ (27,335)
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	245,005	251,958	254,182
Stock based compensation expense	4,363	4,693	5,365
Loss (gain) on sale of property and equipment		621	(29)
Undistributed losses (earnings) of other companies	(10,830)	10,199	13,273
Capitalized Brasilia engine overhauls	(29,606)	(25,742)	(17,792)
Adjustment to purchase accounting gain			5,711
Net increase (decrease) in deferred income taxes	38,007	34,800	(21,537)
Changes in operating assets and liabilities:
Decrease (increase) in restricted cash	7,334	(119)	2,341
Decrease (increase) in receivables	18,916	408	(10,665)
Decrease (increase) in income tax receivable	(840)	1,568	1,788
Decrease (increase) in inventories	(24,513)	1,630	(8,639)
Increase in other current assets and prepaid aircraft rents	(31,578)	(39,451)	(28,668)
Decrease in deferred aircraft credits	(8,432)	(7,112)	(8,586)
Increase (decrease) in accounts payable and accrued aircraft rents	17,594	(7,653)	10,161
Increase (decrease) in other current liabilities	5,514	11,867	(7,444)
NET CASH PROVIDED BY OPERATING ACTIVITIES	289,890	288,824	162,126
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of marketable securities	(488,564)	(736,330)	(683,396)
Sales of marketable securities	557,424	677,798	857,031
Proceeds from the sale of property and equipment	293	15,265	193
Proceeds from installment payment of equity shares of TRIP	16,658	8,064
Acquisition of property and equipment:
Aircraft and rotable spare parts	(102,499)	(57,277)	(158,942)
Deposits on aircraft	(40,000)		(13,500)
Buildings and ground equipment	(9,502)	(7,662)	(13,756)
Decrease (increase) in other assets	229	(8,218)	817
NET CASH USED IN INVESTING ACTIVITIES	(65,961)	(108,360)	(11,553)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from issuance of long-term debt		44,900	76,454
Principal payments on long-term debt	(171,453)	(218,270)	(159,038)
Return of deposits on aircraft and rotable spare parts			13,900
Net proceeds from issuance of common stock	4,385	6,231	4,446
Purchase of treasury stock	(11,739)	(902)	(60,681)
Payment of cash dividends	(8,258)	(8,177)	(8,466)
NET CASH USED IN FINANCING ACTIVITIES	(187,065)	(176,218)	(133,385)
Increase in cash and cash equivalents	36,864	4,246	17,188
Cash and cash equivalents at beginning of year	133,772	129,526	112,338
CASH AND CASH EQUIVALENTS AT END OF YEAR	170,636	133,772	129,526
Cash paid (received) during the year for:
Interest, net of capitalized amounts	71,323	78,407	81,187
Income taxes	$ 3,678	$ (1,354)	$ (2,198)

XML

CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Dec. 31, 2013	Dec. 31, 2012
CONSOLIDATED BALANCE SHEETS
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	0	0
Common stock, par value (in dollars per share)
Common stock, shares authorized	120,000,000	120,000,000
Common stock, shares issued	77,325,702	76,713,154
Treasury stock, at cost, shares	26,095,636	25,280,364

XML

Stock Repurchase

12 Months Ended

Dec. 31, 2013

Stock Repurchase

Stock Repurchase

(10) Stock Repurchase

        The Company's Board of Directors has authorized the repurchase of up to 25,000,000 shares of the Company's common stock in the public market since 2007. During the years ended December 31, 2013 and 2012, the Company repurchased 0.8 million and 0.1 million shares of common stock for approximately $11.7 million and $0.9 million, respectively at a weighted average price per share of $14.40 and $15.32, respectively. Effective September 14, 2012, the Company's Board of Directors adopted the SkyWest, Inc. 2012 Stock Repurchase Plan (the "Stock Repurchase Plan"), which provides for the repurchase of up to 6,514,266 shares of common stock, from time to time in open market or privately negotiated transactions, as contemplated by Rule 10b5-1 promulgated under the Exchange Act, as amended. The Stock Repurchase Plan expires on October 15, 2014.

XML

Document and Entity Information (USD $)	12 Months Ended
	Dec. 31, 2013	Feb. 03, 2014	Jun. 28, 2013
Document and Entity Information
Entity Registrant Name	SKYWEST INC
Entity Central Index Key	0000793733
Document Type	10-K
Document Period End Date	Dec. 31, 2013
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Accelerated Filer
Entity Public Float			$ 682,092,110
Entity Common Stock, Shares Outstanding		51,375,679
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	FY

XML

Related-Party Transactions

12 Months Ended

Dec. 31, 2013

Related-Party Transactions

Related-Party Transactions

(11) Related-Party Transactions

        The Company's President, Chairman of the Board and Chief Executive Officer, serves on the Board of Directors of Zions Bancorporation ("Zions"). The Company maintains a line of credit (see Note 3) and certain bank accounts with Zions. Zions is an equity participant in leveraged leases on three CRJ200, two CRJ700 and five Brasilia turboprop aircraft operated by the Company's subsidiaries. Zions also refinanced six CRJ200 and two CRJ700 aircraft in 2012 for terms of three to four years, becoming the debtor on these aircraft. Zions also serves as the Company's transfer agent. The Company's cash balance in the accounts held at Zions as of December 31, 2013 and 2012 was $81.8 million and $56.4 million, respectively.

XML

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
OPERATING REVENUES:
Passenger	$ 3,239,525	$ 3,467,546	$ 3,584,777
Ground handling and other	58,200	66,826	70,146
Total operating revenues	3,297,725	3,534,372	3,654,923
OPERATING EXPENSES:
Salaries, wages and benefits	1,211,307	1,171,689	1,155,051
Aircraft maintenance, materials and repairs	686,381	659,869	712,926
Aircraft rentals	325,360	333,637	346,526
Depreciation and amortization	245,005	251,958	254,182
Aircraft fuel	193,513	426,387	592,871
Station rentals and landing fees	114,688	169,855	174,838
Ground handling services	129,119	125,148	131,462
Acquisition related costs			5,770
Other, net	239,241	229,842	240,192
Total operating expenses	3,144,614	3,368,385	3,613,818
OPERATING INCOME	153,111	165,987	41,105
OTHER INCOME (EXPENSE):
Interest income	3,689	7,928	8,236
Interest expense	(68,658)	(77,380)	(80,383)
Purchase accounting adjustment			(5,711)
Other, net	10,390	(10,639)	(13,417)
Total other expense, net	(54,579)	(80,091)	(91,275)
INCOME (LOSS) BEFORE INCOME TAXES	98,532	85,896	(50,170)
PROVISION (BENEFIT) FOR INCOME TAXES	39,576	34,739	(22,835)
NET INCOME (LOSS)	58,956	51,157	(27,335)
BASIC EARNINGS (LOSS) PER SHARE (in dollars per share)	$ 1.14	$ 1.00	$ (0.52)
DILUTED EARNINGS (LOSS) PER SHARE (in dollars per share)	$ 1.12	$ 0.99	$ (0.52)
Weighted average common shares:
Basic (in shares)	51,688	51,090	52,201
Diluted (in shares)	52,422	51,746	52,201
COMPREHENSIVE INCOME (LOSS):
Net income (loss)	58,956	51,157	(27,335)
Proportionate share of other companies foreign currency translation adjustment, net of taxes	66	(251)	(295)
Net unrealized appreciation (depreciation) on marketable securities, net of taxes	(13)	316	534
TOTAL COMPREHENSIVE INCOME (LOSS)	$ 59,009	$ 51,222	$ (27,096)

XML

Commitments and Contingencies

12 Months Ended

Dec. 31, 2013

Commitments and Contingencies

Commitments and Contingencies

(5) Commitments and Contingencies

Lease Obligations

        The Company leases 570 aircraft, as well as airport facilities, office space, and various other property and equipment under non-cancelable operating leases which are generally on a long-term net rent basis where the Company pays taxes, maintenance, insurance and certain other operating expenses applicable to the leased property. The following table summarizes future minimum rental payments required under operating leases that have initial or remaining non-cancelable lease terms in excess of one year as of December 31, 2013 (in thousands):

Year ending December 31,
2014	380,413
2015	331,151
2016	258,464
2017	194,258
2018	153,294
Thereafter	571,783
	1,889,363

        The majority of the Company's leased aircraft are owned and leased through trusts whose sole purpose is to purchase, finance and lease these aircraft to the Company; therefore, they meet the criteria of a variable interest entity. However, since these are single owner trusts in which the Company does not participate, the Company is not considered at risk for losses and is not considered the primary beneficiary. As a result, based on the current rules, the Company is not required to consolidate any of these trusts or any other entities in applying the accounting guidance. The Company's management believes that the Company's maximum exposure under these leases is the remaining lease payments.

        Total rental expense for non-cancelable aircraft operating leases was approximately $325.4 million, $333.6 million and $346.5 million for the years ended December 31, 2013, 2012 and 2011, respectively. The minimum rental expense for airport station rents was approximately $35.1 million, $43.5 million and $42.6 million for the years ended December 31, 2013, 2012 and 2011, respectively.

        The Company's leveraged lease agreements typically obligate the Company to indemnify the equity/owner participant against liabilities that may arise due to changes in benefits from tax ownership of the respective leased aircraft. The terms of these contracts range up to 12 years. The Company did not accrue any liability relating to the indemnification to the equity/owner participant because of management's assessment that the probability of this occurring is remote.

Self-insurance

        The Company self-insures a portion of its potential losses from claims related to workers' compensation, environmental issues, property damage, medical insurance for employees and general liability. Losses are accrued based on an estimate of the ultimate aggregate liability for claims incurred, using standard industry practices and the Company's actual experience. Actual results could differ from these estimates.

Legal Matters

        The Company is subject to certain legal actions which it considers routine to its business activities. As of December 31, 2013, management believed, after consultation with legal counsel, that the ultimate outcome of such legal matters was not likely to have a material adverse effect on the Company's financial position, liquidity or results of operations. However, the following is a significant outstanding legal matter.

SkyWest Airlines and ExpressJet v. Delta

        During the quarter ended December 31, 2007, Delta notified the Company, SkyWest Airlines and Atlantic Southeast, of a dispute under the Delta Connection Agreements executed by Delta with SkyWest Airlines and Atlantic Southeast. The dispute relates to the allocation of liability for certain irregular operation ("IROP") expenses paid by SkyWest Airlines and Atlantic Southeast to their passengers and vendors under certain situations. During the period between the execution of the Delta Connection Agreements in September 2005 and December 2007, SkyWest Airlines and Atlantic Southeast passed through to Delta IROP expenses that were paid pursuant to Delta's policies, and Delta accepted and reimbursed those expenses. Delta now claims it is obligated to reimburse only a fraction of those IROP expenses. As a result, Delta withheld a combined total of approximately $25 million (pre-tax) from one of the weekly scheduled wire payments to SkyWest Airlines and Atlantic Southeast during December 2007. Since December 2007, Delta has continued to withhold payments from the weekly scheduled wire payments to SkyWest Airlines and Atlantic Southeast (now ExpressJet), and has disputed subsequent billings for IROP expenses. On February 1, 2008, SkyWest Airlines and Atlantic Southeast filed a Complaint in the Superior Court for Fulton County, Georgia ("Superior Court") challenging Delta's treatment of the matter and seeking recovery of the payments withheld by Delta and any future withholdings related to this issue. Delta filed an Answer to the SkyWest Airlines and Atlantic Southeast Complaint and a Counterclaim against SkyWest Airlines and Atlantic Southeast on March 24, 2008. Delta's Counterclaim alleged that SkyWest Airlines and Atlantic Southeast breached the Delta Connection Agreements by invoicing Delta for IROP expenses that were paid pursuant to Delta's policies, and claims only a portion of those expenses may be invoiced to Delta. Since July 1, 2008, the Company has not recognized revenue related to IROP expense reimbursements withheld by Delta because collection of those reimbursements is the subject of litigation and is not reasonably assured. As of December 31, 2013, the Company had recognized a cumulative total of $31.7 million of revenue associated with the funds withheld by Delta prior to July 1, 2008.

        During 2010, the Company and Delta began preliminary settlement discussions related to the IROP dispute. Notwithstanding the legal merits of the case, the Company offered to settle the claim for approximately $5.9 million less than the cumulative total of revenue recognized related to this matter. Those settlement discussions were not successful; however, as a result of the settlement offer, the Company wrote off $5.9 million of related receivables as of December 31, 2013.

        After proceedings that included contested motions, document discovery, and depositions, Delta voluntarily dismissed its Counterclaim. Discovery in that action was not complete at the time of dismissal. On February 14, 2011, SkyWest Airlines and Atlantic Southeast voluntarily dismissed their claims in the Superior Court, and filed a new complaint (the "State Court Complaint") in the Georgia State Court of Fulton County (the "State Court"). The claims continue to include breach of contract, breach of contract based on mutual departure, breach of contract based on voluntary payment, and breach of the duty of good faith and fair dealing. Delta moved for partial dismissal of the State Court Complaint, which motion was denied in its entirety.

        Discovery in the State Court lawsuit has concluded. On July 19, 2013, the parties filed cross motions for partial summary judgment. SkyWest Airlines and ExpressJet filed a motion for partial summary judgment on their claim for voluntary payment. Delta filed a motion for partial summary judgment on all of SkyWest's and ExpressJet's claims, for partial summary judgment on the issue of damages, and for spoliation sanctions. Briefing of the cross motions is complete, but no hearing has been scheduled by the Court. SkyWest and ExpressJet intend to oppose Delta's motions and continue to vigorously pursue their claims set forth in the State Court Complaint.

        As of December 31, 2013, the Company's estimated range of reasonably possible loss related to the dispute was $0 to $25.8 million.

Concentration Risk and Significant Customers

        The Company requires no collateral from its major partners or customers but monitors the financial condition of its major partners. The Company maintains an allowance for doubtful accounts receivable based upon expected collectability of all accounts receivable. The Company's allowance for doubtful accounts totaled $94,000 and $94,000 as of December 31, 2013 and 2012, respectively. For the years ended December 31, 2013, 2012 and 2011, the Company's contractual relationships with Delta and United combined accounted for approximately 91.6%, 94.8% and 97.6%, respectively of the Company's total revenues.

Employees Under Collective Bargaining Agreements

        As of December 31, 2013, the Company had 18,358 full-time equivalent employees. Approximately 49% of these employees were represented by unions, including the following employee groups. Notwithstanding the completion of the ExpressJet Combination, ExpressJet's employee groups continue to be represented by those unions who provided representation prior to the ExpressJet Combination.

        Accordingly, the following table refers to ExpressJet's employee groups based upon their union affiliations prior to the ExpressJet Combination.

Employee Group	Approximate Number of Active Employees Represented		Representatives	Status of Agreement
Atlantic Southeast Pilots		1,800	Air Line Pilots Association International	Amendable
Atlantic Southeast Flight Attendants		1,075	International Association of Machinists and Aerospace Workers	Amendable
Atlantic Southeast Flight Controllers		60	Transport Workers Union of America	Amendable
Atlantic Southeast Mechanics		700	International Brotherhood of Teamsters	Amendable
Atlantic Southeast Stock Clerks		70	International Brotherhood of Teamsters	Amendable
ExpressJet Delaware Pilots		2,900	Air Line Pilots Association International	Amendable
ExpressJet Delaware Flight Attendants		1,200	International Association of Machinists and Aerospace Workers	Amendable
ExpressJet Delaware Mechanics		1,000	International Brotherhood of Teamsters	Amendable
ExpressJet Delaware Dispatchers		85	Transport Workers Union of America	Amendable
ExpressJet Delaware Stock Clerks		100	International Brotherhood of Teamsters	Amendable

        During December 2013, the Airline Pilots Association International ("ALPA"), which represents the Atlantic Southeast pilot and ExpressJet Delaware pilot groups, conducted a vote of the two employee groups, seeking approval of a joint collective bargaining agreement that ExpressJet had negotiated with ALPA representatives. The two employee groups rejected the joint collective bargaining agreement, which resulted in the agreements with those employee groups remaining amendable as indicated in the foregoing table. The decision of those employee groups to reject the joint collective bargaining agreement will preclude us from realizing some of the savings we had hoped to achieve through the ExpressJet Combination. ExpressJet intends to resume negotiations with ALPA in an effort to negotiate an acceptable agreement.

XML

Income Taxes

12 Months Ended

Dec. 31, 2013

Income Taxes

Income Taxes

(4) Income Taxes

        The provision for income taxes includes the following components (in thousands):

	Year ended December 31,
	2013		2012		2011
Current tax provision (benefit):
Federal	$	1,767	$	—	$	—
State		343		441		396
		2,110		441		396
Deferred tax provision (benefit):
Federal		34,728		31,791		(21,533	)
State		2,738		2,507		(1,698	)
		37,466		34,298		(23,231	)
Provision (benefit) for income taxes		39,576		34,739		(22,835	)

        The following is a reconciliation between the statutory Federal income tax rate of 35% and the effective rate which is derived by dividing the provision (benefit) for income taxes by income (loss) before for income taxes adjusted for permanent differences (in thousands):

	Year ended December 31,
	2013			2012			2011
Computed "expected" provision (benefit) for income taxes at the statutory rates adjusted for permanent differences	$	37,743		$	32,983		$	(14,683	)
Increase (decrease) in income taxes resulting from:
Purchase accounting (gain) adjustment		—			—			1,999
State income tax provision (benefit), net of Federal income tax benefit		2,867			2,220			(1,810	)
Valuation allowance changes affecting the provision for income taxes		1,430			1,614			—
Other, net		(2,464	)		(2,078	)		(8,341	)
Provision (benefit) for income taxes		39,576			34,739			(22,835	)

        For the years ended December 31, 2013 and 2012, the Company recorded a $1.4 million and $1.6 million valuation allowance against certain deferred tax assets associated with capital losses with a limited carryforward period, respectively. The Company anticipates the carryforward period will lapse prior to utilization of the deferred tax assets.

        The significant components of the net deferred tax assets and liabilities are as follows (in thousands):

	As of December 31,
	2013			2012
Deferred tax assets:
Intangible Asset	$	36,164		$	37,031
Accrued benefits		40,850			40,469
Net operating loss carryforward		85,885			118,448
AMT credit carryforward		17,649			15,882
Deferred aircraft credits		44,350			48,124
Accrued reserves and other		30,987			31,846
Total deferred tax assets		255,885			291,800
Valuation allowance		(3,044	)		(1,614	)
Deferred tax liabilities:
Accelerated depreciation		(824,149	)		(823,487	)
Total deferred tax liabilities		(824,149	)		(823,487	)
Net deferred tax liability		(571,308	)		(533,301	)

        The Company's deferred tax liabilities were primarily generated through an accelerated bonus depreciation on newly purchased aircraft and support equipment in accordance with IRS Section 168(k) in combination with shorter depreciable tax lives.

        The Company's valuation allowance is related to certain deferred tax assets with a limited carry-forward period. The Company does not anticipate utilizing these deferred tax assets prior to the lapse of the carry-forward period.

        At December 31, 2013, the Company had federal net operating losses of approximately $191.5 million and state net operating losses of approximately $651.2 million, which will start to expire in 2026 and 2014, respectively. As of December 31, 2013, the Company also had an alternative minimum tax credit of approximately $17.6 million which does not expire.

        In conjunction with the ExpressJet Merger, the Company acquired non-amortizable intangible tax assets and other tax assets that are not anticipated to provide a tax benefit until 2027 or later due to statutory limitations. Because of the uncertainty associated with the realization of those tax assets, the Company had a full valuation allowance of approximately $69.8 million on such tax assets as of December 31, 2013 and $73.0 million as of December 31, 2012. The Company also has a valuation allowance against deferred tax assets of approximately $1 million for net operating losses in states with short carry-forward periods. The deferred tax assets in the table above are shown net of these valuation allowances.

XML

Segment Reporting (Tables)

12 Months Ended

Dec. 31, 2013

Segment Reporting

Schedule of Company's segment data

The following represents the Company's segment data for the years ended December 31, 2013, 2012 and 2011 (in thousands).

	Year ended December 31, 2013
	SkyWest Airlines		ExpressJet			Other			Consolidated
Operating revenues		1,827,568		1,466,341			3,816			3,297,725
Operating expense		1,644,129		1,494,302			6,183			3,144,614
Depreciation and amortization expense		155,667		89,338			—			245,005
Interest expense		43,920		21,034			3,704			68,658
Segment profit (loss)(1)		139,519		(48,995	)		(6,071	)		84,453
Identifiable intangible assets, other than goodwill		—		14,998			—			14,998
Total assets		2,532,431		1,700,788			—			4,233,219
Capital expenditures (including non-cash)		103,387		38,657			—			142,044

	Year ended December 31, 2012
	SkyWest Airlines		ExpressJet			Other		Consolidated
Operating revenues		1,930,149		1,593,527			10,696		3,534,372
Operating expense		1,774,876		1,588,400			5,109		3,368,385
Depreciation and amortization expense		153,915		98,043			—		251,958
Interest expense		49,208		23,582			4,590		77,380
Segment profit(1)		106,065		(18,455	)		997		88,607
Identifiable intangible assets, other than goodwill		—		17,248			—		17,248
Total assets		2,633,369		1,621,268			—		4,254,637
Capital expenditures (including non-cash)		74,636		20,204			—		94,840

	Year ended December 31, 2011
	SkyWest Airlines		ExpressJet			Other		Consolidated
Operating revenues		2,002,830		1,640,837			11,256		3,654,923
Operating expense		1,893,909		1,714,481			5,428		3,613,818
Depreciation and amortization expense		147,520		106,662			—		254,182
Interest expense		50,907		25,142			4,334		80,383
Segment profit(1)		58,014		(98,786	)		1,494		(39,278	)
Identifiable intangible assets, other than goodwill		—		19,497			—		19,497
Total assets		2,595,901		1,686,007			—		4,281,908
Capital expenditures (including non-cash)		166,998		32,758			—		199,756

(1)

Segment profit is operating income less interest expense

XML

Quarterly Financial Data (Unaudited)

12 Months Ended

Dec. 31, 2013

Quarterly Financial Data (Unaudited)

Quarterly Financial Data (Unaudited)

(12) Quarterly Financial Data (Unaudited)

        Unaudited summarized financial data by quarter for 2013 and 2012 is as follows (in thousands, except per share data):

	Year Ended December 31, 2013
	First Quarter		Second Quarter		Third Quarter		Fourth Quarter		Year
Operating revenues	$	803,487	$	839,130	$	850,740	$	804,368	$	3,297,725
Operating income		15,561		50,555		56,174		30,820		153,111
Net income (loss)		3,233		20,720		26,394		8,609		58,956
Net income (loss) per common share:
Basic		0.06		0.40		0.51		0.17		1.14
Diluted		0.06		0.39		0.50		0.17		1.12
Weighted average common shares:
Basic:		51,763		51,881		51,881		51,228		51,688
Diluted:		52,497		52,547		52,610		52,034		52,422

	Year Ended December 31, 2012
	First Quarter			Second Quarter		Third Quarter		Fourth Quarter		Year
Operating revenues	$	921,173		$	937,214	$	865,259	$	810,726	$	3,534,372
Operating income		20,457			46,806		54,974		43,750		165,987
Net income (loss)		(682	)		16,960		20,933		13,946		51,157
Net income (loss) per common share:
Basic		(0.01	)		0.33		0.41		0.27		1.00
Diluted		(0.01	)		0.33		0.40		0.27		0.99
Weighted average common shares:
Basic:		50,881			50,944		51,241		51,296		51,090
Diluted:		50,881			51,789		52,153		52,161		51,746

XML

Capital Transactions

12 Months Ended

Dec. 31, 2013

Capital Transactions

Capital Transactions

(8) Capital Transactions

Preferred Stock

        The Company is authorized to issue 5,000,000 shares of preferred stock in one or more series without shareholder approval. No shares of preferred stock are presently outstanding. The Company's Board of Directors is authorized, without any further action by the shareholders of the Company, to (i) divide the preferred stock into series; (ii) designate each such series; (iii) fix and determine dividend rights; (iv) determine the price, terms and conditions on which shares of preferred stock may be redeemed; (v) determine the amount payable to holders of preferred stock in the event of voluntary or involuntary liquidation; (vi) determine any sinking fund provisions; and (vii) establish any conversion privileges.

Stock Compensation

        On May 4, 2010, the Company's shareholders approved the adoption of the SkyWest Inc. 2010 Long-Term Incentive Plan, which provides for the issuance of up to 5,150,000 shares of common stock to the Company's directors, employees, consultants and advisors (the "2010 Incentive Plan"). The 2010 Incentive Plan provides for awards in the form of options to acquire shares of common stock, stock appreciation rights, restricted stock grants, restricted stock units and performance awards. The 2010 Incentive Plan is administered by the Compensation Committee of the Company's Board of Directors (the "Compensation Committee") who is authorized to designate option grants as either incentive or non-statutory. Incentive stock options are granted at not less than 100% of the market value of the underlying common stock on the date of grant. Non-statutory stock options are granted at a price as determined by the Compensation Committee.

        In prior years, the Company adopted three stock option plans: the Executive Stock Incentive Plan (the "Executive Plan"), the 2001 Allshare Stock Option Plan (the "Allshare Plan") and SkyWest Inc. Long-Term Incentive Plan (the "2006 Incentive Plan"). However, as of December 31, 2013, options to purchase an aggregate of 2,613,415 shares of the Company's common stock remained outstanding under the Executive Plan, the Allshare Plan and the 2006 Incentive Plan. There are no additional shares of common stock available for issuance under these plans.

        The fair value of stock options awarded under the Company's stock option plans has been estimated as of the grant date using the Black-Scholes option pricing model. The Company uses historical data to estimate option exercises and employee termination in the option pricing model. The expected term of options granted is derived from the output of the option pricing model and represents the period of time that options granted are expected to be outstanding. The expected volatilities are based on the historical volatility of the Company's traded stock and other factors. During the year ended December 31, 2013, the Company granted 173,560 stock options to employees under the 2010 Incentive Plan. The following table shows the assumptions used and weighted average fair value for grants in the years ended December 31, 2013, 2012 and 2011.

	2013			2012			2011
Expected annual dividend rate		1.21	%		1.23	%		1.04	%
Risk-free interest rate		0.92	%		0.81	%		2.08	%
Average expected life (years)		6.0			5.6			5.8
Expected volatility of common stock		0.446			0.409			0.404
Forfeiture rate		0.0	%		0.0	%		0.0	%
Weighted average fair value of option grants	$	5.04		$	4.43		$	5.74

        The Company recorded share-based compensation expense only for those options that are expected to vest. The estimated fair value of the stock options is amortized over the vesting period of the respective stock option grants.

        During the year ended December 31, 2013, the Company granted 282,651 shares of restricted stock units to the Company's employees under the 2010 Incentive Plan. The restricted stock has a three-year vesting period, during which the recipient must remain employed with the Company or its subsidiaries. The weighted average fair value of the restricted stock on the date of grants made during the year ended December 31, 2013 was $13.24 per share. Additionally, the Company granted 29,453 fully-vested shares of common stock to the Company's directors with a weighted average grant-date fair value of $13.41. The following table summarizes the restricted stock activity as of December 31, 2013, 2012 and 2011:

	Number of Shares			Weighted-Average Grant-Date Fair Value
Non-vested shares outstanding at December 31, 2010		659,263			18.97
Granted		249,502			15.51
Vested		(238,848	)		25.80
Cancelled		(58,315	)		15.71
Non-vested shares outstanding at December 31, 2011		611,602			15.08
Granted		318,139			13.04
Vested		(212,841	)		14.95
Cancelled		(18,015	)		14.20
Non-vested shares outstanding at December 31, 2012		698,885			14.21
Granted		312,104			13.41
Vested		(231,465	)		14.35
Cancelled		(45,933	)		13.69
Non-vested shares outstanding at December 31, 2013		733,591			13.79

        During the year ended December 31, 2013, 2012 and 2011, the Company recorded equity-based compensation expense of $4.4 million, $4.7 million and $5.4 million, respectively.

        As of December 31, 2013, the Company had $4.9 million of total unrecognized compensation cost related to non-vested stock options and non-vested restricted stock grants. Total unrecognized compensation cost will be adjusted for future changes in estimated forfeitures. The Company expects to recognize this cost over a weighted average period of 1.7 years.

        Options are exercisable for a period as defined by the Compensation Committee on the date granted; however, no stock option will be exercisable before six months have elapsed from the date it is granted and no incentive stock option shall be exercisable after ten years from the date of grant. The following table summarizes the stock option activity for all of the Company's plans for the years ended December 31, 2013, 2012 and 2011:

	2013									2012					2011
	Number of Options			Weighted Average Exercise Price		Weighted Average Remaining Contractual Term		Aggregate Intrinsic Value ($000)		Number of Options			Weighted Average Exercise Price		Number of Options			Weighted Average Exercise Price
Outstanding at beginning of year		3,653,859		$	18.44		2.3 years	$	—		4,176,673		$	19.26		4,586,979		$	19.96
Granted		173,560			13.24						200,115			13.06		327,617			15.45
Exercised		(75,080	)		10.91						(179,204	)		10.57		(5,941	)		10.57
Cancelled		(344,764	)		20.67						(543,725	)		25.35		(731,982	)		24.73
Outstanding at end of year		3,407,575			17.99		1.8 years		—		3,653,859			18.44		4,176,673			19.26
Exercisable at December 31, 2013		2,818,464			18.83		1.1 years		—
Exercisable at December 31, 2012		3,031,825			19.28		1.8 years		—

        The total intrinsic value of options to acquire shares of the Company's common stock that were exercised during the years ended December 31, 2013, 2012 and 2011 was $172,000, $191,000 and $31,000, respectively.

        The following table summarizes the status of the Company's non-vested stock options as of December 31, 2013:

	Number of Shares			Weighted-Average Grant-Date Fair Value
Non-vested shares at beginning of year		622,034		$	4.99
Granted		173,560			5.04
Vested		(206,483	)		4.78
Cancelled		—			—
Non-vested shares at end of year		589,111			5.07

        The following table summarizes information about the Company's stock options outstanding at December 31, 2013:

	Options Outstanding						Options Exercisable
Range of Exercise Prices	Number Outstanding		Weighted Average Remaining Contractual Life		Weighted Average Exercise Price		Number Exercisable		Weighted Average Exercise Price
$10 to $16		1,240,074		3.7 years	$	14.51		650,963	$	15.00
$17 to $21		1,593,980		0.8 years		17.72		1,593,980		17.72
$22 to $28		573,521		0.6 years		26.29		573,521		26.29
$10 to $28		3,407,575		1.8 years		17.99		2,818,464		18.83

Taxes

        A portion of the Company's granted options qualify as incentive stock options ("ISOs") for income tax purposes. As such, a tax benefit is not recorded at the time the compensation cost related to the options is recorded for book purposes due to the fact that an ISO does not ordinarily result in a tax benefit unless there is a disqualifying disposition. Stock option grants of non-qualified options result in the creation of a deferred tax asset, which is a temporary difference, until the time that the option is exercised. Due to the treatment of incentive stock options for tax purposes, the Company's effective tax rate from year to year is subject to variability.

XML

Fair Value Measurements

12 Months Ended

Dec. 31, 2013

Fair Value Measurements

Fair Value Measurements

(6) Fair Value Measurements

        The Company holds certain assets that are required to be measured at fair value in accordance with United States GAAP. The Company determined fair value of these assets based on the following three levels of inputs:

Level 1—Quoted prices in active markets for identical assets or liabilities.

Level 2—Observable inputs other than Level 1 prices such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities. Some of the Company's marketable securities primarily utilize broker quotes in a non-active market for valuation of these securities.

Level 3—Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities, therefore requiring an entity to develop its own assumptions.

        As of December 31, 2013, the Company held certain assets that are required to be measured at fair value on a recurring basis. Assets measured at fair value on a recurring basis are summarized below (in thousands):

	Fair Value Measurements as of December 31, 2013
	Total		Level 1		Level 2		Level 3
Marketable Securities
Bonds	$	487,049	$	—	$	487,049	$	—
Asset backed securities		190		—		190		—
		487,239		—		487,239		—
Cash, Cash Equivalents and Restricted Cash	$	182,855		182,855		—		—
Other Assets(a)		2,245		—		—		2,245
Total Assets Measured at Fair Value	$	672,339	$	182,855	$	487,239	$	2,245

	Fair Value Measurements as of December 31, 2012
	Total		Level 1		Level 2		Level 3
Marketable Securities
Bonds	$	552,289	$	—	$	552,289	$	—
Commercial paper		3,514		—		3,514		—
Asset backed securities		314		—		314		—
		556,117		—		556,117		—
Cash, Cash Equivalents and Restricted Cash		153,325		153,325		—		—
Other Assets(a)		3,844		—		—		3,844
Total Assets Measured at Fair Value	$	713,286	$	153,325	$	556,117	$	3,844

(a)

Auction rate securities included in "Other assets" in the Consolidated Balance Sheet

        Based on market conditions, the Company uses a discounted cash flow valuation methodology for auction rate securities. Accordingly, for purposes of the foregoing consolidated financial statements, these securities were categorized as Level 3 securities. The Company's "Marketable Securities" classified as Level 2 primarily utilize broker quotes in a non-active market for valuation of these securities.

        No significant transfers between Level 1, Level 2 and Level 3 occurred during the year ended December 31, 2013. The Company's policy regarding the recording of transfers between levels is to record any such transfers at the end of the reporting period.

        The following table presents the Company's assets measured at fair value on a recurring basis using significant unobservable inputs (Level 3) at December 31, 2013 (in thousands):

Fair Value Measurements Using Significant Unobservable Inputs

(Level 3)

	Auction Rate Securities
Balance at January 1, 2013	$	3,844
Total realized and unrealized gains or (losses)
Included in earnings		—
Included in other comprehensive income		(71	)
Transferred out		—
Settlements		(1,528	)
Balance at December 31, 2013	$	2,245

XML

Investment in Other Companies

12 Months Ended

Dec. 31, 2013

Investment in Other Companies

Investment in Other Companies

(7) Investment in Other Companies

        In September 2008, the Company entered into an agreement to acquire a 20% interest in Trip Linhas Aereas, a regional airline operating in Brazil ("TRIP"). As of December 31, 2013, the Company's investment balance in TRIP was $19.1 million. In connection with the investment in TRIP, the Company entered into a put option agreement with the majority shareholder of TRIP that allowed the Company to put its investment to TRIP's majority shareholder at an established price based on a 5% annual rate of return over the investment period.

        On July 12, 2012, the Company sold its interest in TRIP for a price of $42 million. The purchase price is scheduled to be paid in three installments over a two-year period and may be accelerated upon the occurrence of certain conditions identified in the purchase agreement. As part of the sale transaction, the Company also received an option to acquire 15.38% of the ownership in Trip Investimentos Ltda., the purchaser of the Company's TRIP shares ("Trip Investimentos"). The option has an initial exercise price per share equal to the price paid by Trip Investimentos to acquire the TRIP shares from the Company. The exercise price escalates annually at a specified rate and the Company can exercise the option, at its discretion, between the second and fourth anniversaries of the Company's receipt of the final required installment payments from Trip Investimentos. Under the terms of the agreement, Trip Investmentos is prohibited from transferring the TRIP shares until all three installment payments have been made. The restriction on Trip Investimentos' ability to transfer the TRIP shares prevents the transaction from being recognized as a sale for financial reporting purposes. As a result, the Company intends to account for the transaction as a sale once all three installment payments have been made. The Company has no continuing involvement with the TRIP shares. As of December 31, 2013, the Company had received the first two installment payments totaling $26.2 million. These payments were recorded as an "Other Long-Term Liability" on the Company's consolidated balance sheet. The third installment payment is due July 12, 2014 for an amount of $16.8 million. The last installment payment and the option to purchase 15.38% of Trip Investimentos represent variable interests in TRIP Investimentos, which is a variable interest entity. The Company has no equity interest and no control over Trip Investimentos, and therefore the Company does not consolidate the financial performance of Trip Investimentos in its financial statements.

        On September 29, 2010, the Company invested $7 million for a 30% ownership interest in Mekong Aviation Joint Stock Company, an airline operating in Vietnam ("Air Mekong"). During 2011, the Company invested an additional $3 million in Air Mekong. During the year ended December 31, 2013, the Company sold its shares of Air Mekong. In conjunction with the sale of its shares, the Company recognized a gain of $5.0 million, which is reflected in other income in the Consolidated Statements of Comprehensive Income.

        During the year ended December 31, 2013, the Company terminated its sub-lease with Air Mekong and recognized $5.1 million of other income primarily due to the recognition of contingent rent payments, net of the write-off of certain maintenance deposits. The contingent rent payments were collected and realized related to aircraft maintenance obligations and no are longer payable to Air Mekong as a result of the sub-lease termination.

XML

Retirement Plans and Employee Stock Purchase Plans

12 Months Ended

Dec. 31, 2013

Retirement Plans and Employee Stock Purchase Plans

Retirement Plans and Employee Stock Purchase Plans

(9) Retirement Plans and Employee Stock Purchase Plans

SkyWest Retirement Plan

        The Company sponsors the SkyWest, Inc. Employees' Retirement Plan (the "SkyWest Plan"). Employees who have completed 90 days of service and are at least 18 years of age are eligible for participation in the SkyWest Plan. Employees may elect to make contributions to the SkyWest Plan. The Company matches 100% of such contributions up to 2%, 4% or 6% of the individual participant's compensation, based upon length of service. Additionally, a discretionary contribution may be made by the Company. The Company's combined contributions to the SkyWest Plan were $18.3 million, $16.0 million and $14.4 million for the years ended December 31, 2013, 2012 and 2011, respectively.

ExpressJet and Atlantic Southeast Retirement Plan

        ExpressJet (formerly Atlantic Southeast) sponsors the Atlantic Southeast Airlines, Inc. Investment Savings Plan (the "Atlantic Southeast Plan"). Employees who have completed 90 days of service and are 18 years of age are eligible for participation in the Atlantic Southeast Plan. Employees may elect to make contributions to the Atlantic Southeast Plan; however, ExpressJet limits the amount of company match at 6% of each participant's total compensation, except for those with ten or more years of service whose company match is limited to 8% of total compensation. Additionally, ExpressJet matches the individual participant's contributions from 20% to 75%, depending on the length of the participant's service. Additionally, participants are 100% vested in their elective deferrals and rollover amounts and from 10% to 100% vested in company matching contributions based on length of service.

        Effective December 31, 2002, ExpressJet Delaware adopted the ExpressJet Airlines, Inc. 401(k) Savings Plan (the "ExpressJet Retirement Plan"). Substantially all of ExpressJet Delaware's domestic employees were covered by this plan at the time of the ExpressJet Combination. Effective January 1, 2009, the ExpressJet Retirement Plan was amended such that certain matching payment amounts have been reduced or eliminated depending on the terms of the collective bargaining unit or work group, as applicable.

        ExpressJet's contribution to the Atlantic Southeast and the ExpressJet Retirement Plans was $26.7 million, $26.4 million and $25.1 million for the years ended December 31, 2013, 2012 and 2011, respectively.

        ExpressJet Delaware also provided medical bridge coverage for employees between the ages of 60 to 65, with at least ten years of service who have retired from the Company. In December 2007, the Fair Treatment for Experienced Pilots Act (H.R. 4343) was enacted. This law increased the mandatory retirement age of commercial pilots from 60 to 65. As a result of this legislation, ExpressJet is no longer required to provide medical bridge coverage to its pilots between the ages of 60 to 65. In 2008, ExpressJet Delaware's practice of providing medical bridge coverage for non-pilot employees was frozen, and does not permit non-pilot employees retiring on or after January 1, 2009 to participate in such coverage.

Employee Stock Purchase Plans

        In May 2009, the Company's Board of Directors approved the SkyWest, Inc. 2009 Employee Stock Purchase Plan (the "2009 Stock Purchase Plan"). All employees who have completed 90 days of employment with the Company or one of its subsidiaries are eligible to participate in the 2009 Stock Purchase Plan, except employees who own five percent or more of the Company's common stock. The 2009 Stock Purchase Plan enables employees to purchase shares of the Company's common stock at a five percent discount, through payroll deductions. Employees can contribute up to 15% of their base pay, not to exceed $21,250 each calendar year, for the purchase of shares. Shares are purchased semi-annually at a five percent discount based on the end of the period price. Employees can terminate their participation in the 2009 Stock Purchase Plan at any time upon written notice.

        The following table summarizes purchases made under the 2009 Employee Stock Purchase Plans during the years ended December 31, 2013, 2012 and 2011:

	Year Ended December 31,
	2013		2012		2011
Number of shares purchased		299,786		487,451		300,177
Average price of shares purchased	$	12.33	$	8.35	$	14.56

        The 2009 Stock Purchase Plan is a non-compensatory plan under the accounting guidance. Therefore, no compensation expense was recorded for the years ended December 31, 2013, 2012 and 2011.

XML

Nature of Operations and Summary of Significant Accounting Policies (Details 4) (USD $)	12 Months Ended			0 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Sep. 07, 2005 Atlantic Southeast Airlines,Inc.	Dec. 31, 2013 Atlantic Southeast Airlines,Inc.	Dec. 31, 2012 Atlantic Southeast Airlines,Inc.
Impairment of Long Lived and Intangible Assets
Property and equipment and related assets	$ 2,651,793,000	$ 2,710,996,000
Intangible assets	14,998,000	17,248,000	19,497,000
Intangible assets related to acquisition of Atlantic Southeast				33,700,000
Period for amortization of intangible assets				15 years
Accumulated amortization expense					18,700,000	16,500,000
Capitalized Interest
Capitalized interest costs	$ 1,200,000	$ 0	$ 0

XML

Related-Party Transactions (Details) (Zions Bancorporation, USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013 item	Dec. 31, 2012 item
Related Party Transactions
Cash balance with related party	$ 81.8	$ 56.4
Minimum
Related Party Transactions
Refinancing term		3 years
Maximum
Related Party Transactions
Refinancing term		4 years
CRJ 200
Related Party Transactions
Equity participation in leveraged leases on number of aircraft	3
Number of refinanced aircraft		6
CRJ700
Related Party Transactions
Equity participation in leveraged leases on number of aircraft	2
Number of refinanced aircraft		2
Brasilia turboprop aircraft
Related Party Transactions
Equity participation in leveraged leases on number of aircraft	5

XML

Nature of Operations and Summary of Significant Accounting Policies (Policies)

12 Months Ended

Dec. 31, 2013

Nature of Operations and Summary of Significant Accounting Policies

Basis of Presentation

Basis of Presentation

        The Company's consolidated financial statements include the accounts of SkyWest, Inc. and its subsidiaries, including SkyWest Airlines and ExpressJet, with all inter-company transactions and balances having been eliminated.

        In preparing the accompanying consolidated financial statements, the Company has reviewed, as determined necessary by the Company's management, events that have occurred after December 31, 2013, up until the filing of the Company's annual report with the U.S. Securities and Exchange Commission.

Use of Estimates

Use of Estimates

        The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

Cash and Cash Equivalents

Cash and Cash Equivalents

        The Company considers all highly liquid investments with an original maturity of three months or less to be cash equivalents. The Company classified $12.2 million and $19.6 million of cash as restricted cash as required by the Company's workers' compensation policy and classified it accordingly in the consolidated balance sheets as of December 31, 2013 and 2012, respectively.

Marketable Securities

Marketable Securities

        The Company's investments in marketable debt and equity securities are deemed by management to be available for sale and are reported at fair market value with the net unrealized appreciation (depreciation) reported as a component of accumulated other comprehensive income in stockholders' equity. At the time of sale, any realized appreciation or depreciation, calculated by the specific identification method, is recognized in other income and expense. The Company's position in marketable securities as of December 31, 2013 and 2012 was as follows (in thousands):

	2013				2012
Investment Types	Cost		Market Value		Cost		Market Value
Commercial paper	$	—	$	—	$	3,510	$	3,514
Bond and bond funds		489,071		489,294		555,603		556,133
Asset backed securities		182		190		296		314
		489,253		489,484		559,409		559,961
Unrealized appreciation		231		—		552		—
Total		489,484		489,484	$	559,961	$	559,961

        Marketable securities had the following maturities as of December 31, 2013 (in thousands):

Maturities	Amount
Year 2014	$	304,353
Years 2015 through 2018		182,873
Years 2019 through 2023		—
Thereafter		2,258

        As of December 31, 2013, the Company had classified $487.2 million of marketable securities as short-term since it has the intent to maintain a liquid portfolio and the ability to redeem the securities within one year. The Company has classified approximately $2.2 million of investments as non-current and has identified them as "Other assets" in the Company's consolidated balance sheet as of December 31, 2013 (see Note 7).

Inventories

Inventories

        Inventories include expendable parts, fuel and supplies and are valued at cost (FIFO basis) less an allowance for obsolescence based on historical results and management's expectations of future operations. Expendable inventory parts are charged to expense as used. An obsolescence allowance for flight equipment expendable parts is accrued based on estimated lives of the corresponding fleet types and salvage values. The inventory allowance as of December 31, 2013 and 2012 was $10.1 million and $9.2 million, respectively. These allowances are based on management estimates, which are subject to change.

Property and Equipment

Property and Equipment

        Property and equipment are stated at cost and depreciated over their useful lives to their estimated residual values using the straight-line method as follows:

Assets	Depreciable Life	Residual Value
Aircraft and rotable spares	10 - 18 years	0 - 30%
Ground equipment	5 - 10 years	0%
Office equipment	5 - 7 years	0%
Leasehold improvements	15 years or life of the lease	0%
Buildings	20 - 39.5 years	0%

Impairment of Long-Lived Assets

Impairment of Long Lived Assets

        As of December 31, 2013, the Company had approximately $2.7 billion of property and equipment and related assets. Additionally, as of December 31, 2013, the Company had approximately $15.0 million in intangible assets. In accounting for these long-lived and intangible assets, the Company makes estimates about the expected useful lives of the assets, the expected residual values of certain of these assets, and the potential for impairment based on the fair value of the assets and the cash flows they generate. On September 7, 2005, the Company completed the acquisition of all of the issued and outstanding capital stock of Atlantic Southeast and recorded an intangible asset of approximately $33.7 million relating to the acquisition. The intangible asset is being amortized over fifteen years under the straight-line method. As of December 31, 2013 and 2012, the Company had $18.7 million and $16.5 million in accumulated amortization expense, respectively. Factors indicating potential impairment include, but are not limited to, significant decreases in the market value of the long-lived assets, a significant change in the condition of the long-lived assets and operating cash flow losses associated with the use of the long-lived assets. On a periodic basis, the Company evaluates whether impairment indicators are present. When considering whether or not impairment of long-lived assets exists, we group similar assets together at the lowest level for which identifiable cash flows are largely independent of the cash flows of other assets and liabilities and compare the undiscounted cash flows for each asset group to the net carrying amount of the assets supporting the asset group. Asset groupings are done at the fleet or contract level. The Company did not recognize any impairments of long-lived assets during 2013, 2012, or 2011.

Capitalized Interest

Capitalized Interest

        Interest is capitalized on aircraft purchase deposits as a portion of the cost of the asset and is depreciated over the estimated useful life of the asset. During the years ended December 31, 2013, 2012 and 2011, the Company capitalized interest costs of approximately $1.2 million, $0, and $0, respectively.

Maintenance

Maintenance

        The Company operates under an FAA-approved continuous inspection and maintenance program. The Company uses the direct expense method of accounting for its regional jet engine overhauls wherein the expense is recorded when the overhaul event occurs. The Company has an engine services agreement with a third party vendor to provide long-term engine services covering the scheduled and unscheduled repairs for certain of its Bombardier CRJ700 Regional Jets ("CRJ700s") and Embraer S.A. ("Embraer") ERJ145 regional jet ("ERJ 145") aircraft. Under the terms of the agreement, the Company pays a set dollar amount per engine hour flown on a monthly basis and the third party vendor will assume the responsibility to repair the engines at no additional cost to the Company, subject to certain specified exclusions. Maintenance costs under these contracts are recognized when the engine hour is flown pursuant to the terms of the contract. The Company uses the "deferral method" of accounting for its Embraer Brasilia EMB-120 turboprop aircraft ("Brasilia turboprop") engine overhauls wherein the overhaul costs are capitalized and depreciated to the next estimated overhaul event. The costs of maintenance for airframe and avionics components, landing gear and normal recurring maintenance are expensed as incurred. For leased aircraft, the Company is subject to lease return provisions that require a minimum portion of the "life" of an overhaul be remaining on the engine at the lease return date. For Brasilia turboprop engine overhauls related to leased aircraft to be returned, the Company adjusts the estimated useful lives of the final engine overhauls based on the shorter of the remaining useful life or the respective lease return dates.

Passenger and Ground Handling Revenues

Passenger and Ground Handling Revenues

        The Company recognizes passenger and ground handling revenues when the service is provided. Under the Company's contract and pro-rate flying agreements with Delta, United, US Airways, American and Alaska, revenue is considered earned when the flight is completed. Revenue is recognized under the Company's pro-rate flying agreements based upon the portion of the pro-rate passenger fare the Company anticipates that it will receive. Other ancillary revenues commonly associated with airlines such as baggage fee revenue, ticket change fee revenue and the marketing component of the sale of mileage credits are retained by the Company's major airline partners on flights that the Company operates under its code-share agreements.

        In the event that the contractual rates under the agreements have not been finalized at quarterly or annual financial statement dates, the Company records revenues based on the lower of prior period's approved rates, as adjusted to reflect any contract negotiations and the Company's estimate of rates that will be implemented in accordance with revenue recognition guidelines.

        In the event the Company has a reimbursement dispute with a major partner, the Company evaluates the dispute under its established revenue recognition criteria and, provided the revenue recognition criteria have been met, the Company recognizes revenue based on management's estimate of the resolution of the dispute.

        In several of the Company's agreements, the Company is eligible for incentive compensation upon the achievement of certain performance criteria. The incentives are defined in the agreements and are being measured and determined on a monthly, quarterly or semi-annual basis. At the end of period, the Company calculates the incentives achieved during that period and recognizes revenue accordingly.

        The following summarizes the significant provision of each code share agreement the Company has with each major partner:

Delta Connection Agreements

Agreement	Number of aircraft under contract	Term / Termination Dates	Pass through costs or costs paid directly by major partner	Performance Incentive Structure	Payment Structure
SkyWest Airlines Delta Connection Agreement	• CRJ 200 - 41 • CRJ700 - 19 • CRJ 900 - 32	• The contract expires on an individual aircraft basis beginning in 2014 • The final aircraft expires in 2022 • The average remaining term of the aircraft under contract is 5.8 years • Upon expiration, aircraft may be renewed or extended	• Fuel • Engine Maintenance • Landing fees, Station Rents, Deice • Insurance	• No financial performance based incentives	• Rate per block hour, per departure and per aircraft under contract
ExpressJet Delta Connection Agreement	• CRJ 200 - 76 • CRJ700 - 41 • CRJ 900 - 28	• The contract expires on an individual aircraft basis beginning in 2014 • The final aircraft expires in 2022 • The average remaining term of the aircraft under contract is 4.4 years • Upon expiration, aircraft may be renewed or extended	• Fuel • Engine Maintenance • Landing fees, Station Rents, Deice Insurance	• Performance based financial incentives	• Rate per block hour, per departure and per aircraft under contract
SkyWest Airlines Prorate Agreement	• EMB 120 - 9 • CRJ200 - 8	• Terminate with 120 days notice	• None	• None	• Pro-rata sharing of the passenger fare revenue

SkyWest Airlines and ExpressJet are each parties to a Delta Connection Agreement with Delta, pursuant to which SkyWest Airlines and ExpressJet provide contract flight services for Delta. The SkyWest Airlines and ExpressJet Delta Connection Agreements contain multi-year rate reset provisions beginning in 2010 and continuing each 5th year thereafter. The Delta Connection Agreements also provide that, beginning with the fifth anniversary of the execution of the agreements (September 8, 2010), Delta has the right to require that certain contractual rates under those agreements shall not exceed the second lowest of all carriers within the Delta Connection program. During the fourth quarter of 2010, SkyWest Airlines and ExpressJet reached an agreement with Delta on contractual rates satisfying the 2010 rate reset provision and the second-lowest rate provision and agreed to rates through December 31, 2015. Delta additionally waived its right to require that the contractual rates payable under the Delta Connection Agreements shall not exceed the second-lowest rates of all carriers within the Delta Connection program through December 31, 2015.

United Express Agreements

Agreement	Number of aircraft under contract	Term / Termination Dates	Pass through costs or costs paid directly by major partner	Performance Incentive Structure	Payment Structure
SkyWest Airlines United Express Agreement	• CRJ 200 - 61 • CRJ700 - 70 • EMB 120 - 9	• The contract expires on an individual aircraft basis beginning in 2014 • The final aircraft expires in 2024 • The average remaining term of the aircraft under contract is 3.8 years • Upon expiration, aircraft may be renewed or extended	• Fuel • Landing fees, Station Rents, Deice • Insurance	• Performance based incentives	• Rate per block hour, per departure and per aircraft under contract
Atlantic Southeast United Express Agreement	• CRJ 200 - 14	• Terminates 2015 • Upon expiration, aircraft may be renewed or extended	• Fuel • Landing fees, Station Rents, Deice • Insurance	• Performance based incentives	• Rate per block hour, per departure and per aircraft under contract
ExpressJet Delaware United Express Agreement	• EMB 145 - 22	• Terminates 2015 • Upon expiration, aircraft may be renewed or extended	• Fuel • Landing fees, Station Rents, Deice • Insurance	• Performance based incentives	• Rate per block hour, per departure and per aircraft under contract
ExpressJet Delaware United Express Agreement	• EMB 135 - 9 • EMB 145 - 220	• The contract expires on an individual aircraft basis beginning in 2014 • The final aircraft expires in 2020 • The average remaining term of the aircraft under contract is 4.3 years • Upon expiration, aircraft may be renewed or extended	• Fuel • Engine Maintenance • Landing fees, Station Rents, Deice • Insurance	• Performance based incentives or penalties	• Rate per block hour, per departure and per aircraft under contract
SkyWest Airlines United Express Prorate Agreement	• CRJ200 - 17 • EMB 120 - 27	• Terminate with 120 days notice	• None	• None	• Pro-rata sharing of the passenger fare revenue

Alaska Capacity Purchase Agreement

Agreement	Number of aircraft under contract	Term / Termination Dates	Pass through costs or costs paid directly by major partner	Incentive Structure	Payment Structure
SkyWest Airlines Capacity Purchase Agreement	• CRJ 700 - 7	• Terminates 2018 • Upon expiration, aircraft may be renewed or extended	• Fuel • Landing fees, Station Rents, Deice • Insurance	• Performance based incentives	• Rate per block hour, per departure and per aircraft under contract

US Airways Express Agreement

Agreement	Number of aircraft under contract	Term / Termination Dates	Pass through costs or costs paid directly by major partner	Incentive Structure	Payment Structure
SkyWest Airlines US Airways Express Agreement	• CRJ200 - 10 • CRJ900 - 4	• Terminates 2015 • Upon expiration, aircraft may be renewed or extended	• Fuel • Landing fees, Station Rents, Deice • Insurance	• Performance based incentives	• Rate per block hour, per departure and per aircraft under contract
SkyWest Airlines US Airways Express Prorate Agreement	• CRJ200 - 1	• Terminate with 120 days notice	• None	• None	• Pro-rata sharing of the passenger fare revenue

American Agreement

Agreement	Number of aircraft under contract	Term / Termination Dates	Pass through costs or costs paid directly by major partner	Incentive Structure	Payment Structure
SkyWest Airlines American Capacity Purchase Agreement	• CRJ200 - 12	• Terminate 2016 • Upon expiration, aircraft may be renewed or extended	• Fuel • Landing fees, Station Rents, Deice • Insurance	• Performance based incentives	• Rate per block hour, per departure and per aircraft under contract
ExpressJet American Capacity Purchase Agreement	• CRJ200 - 11	• Terminates 2017 • Upon expiration, aircraft may be renewed or extended	• Fuel • Landing fees, Station Rents, Deice • Insurance	• Performance based incentives	• Rate per block hour, per departure and per aircraft under contract

Other Revenue Items

Other Revenue Items

        The Company's passenger and ground handling revenues could be impacted by a number of factors, including changes to the Company's code-share agreements with Delta, United, Alaska, American or US Airways, contract modifications resulting from contract re-negotiations, the Company's ability to earn incentive payments contemplated under the Company's code-share agreements and settlement of reimbursement disputes with the Company's major partners.

        Under the Company's code-share agreements with Delta, United, Alaska, US Airways and American, the compensation structure generally consists of a combination of agreed-upon rates for operating flights and direct reimbursement for other certain costs associated with operating the aircraft. A portion of the Company's contract flying compensation is designed to reimburse the Company for certain aircraft ownership costs. The Company has concluded that a component of its revenue under these agreements is rental income, inasmuch as the agreements identify the "right of use" of a specific type and number of aircraft over a stated period of time. The amounts deemed to be rental income under the agreements for the years ended December 31, 2013, 2012 and 2011 were $500.2 million, $506.7 million and $521.3 million, respectively. These amounts were recorded as passenger revenue on the Company's consolidated statements of operations. The Company has not separately stated aircraft rental income and aircraft rental expense in the consolidated statement of comprehensive income (loss) since the use of the aircraft is not a separate activity of the total service provided and there is not a separate profitability measurement for the deemed rental activity of the aircraft.

Deferred Aircraft Credits

Deferred Aircraft Credits

        The Company accounts for incentives provided by aircraft manufacturers as deferred credits. The deferred credits related to leased aircraft are amortized on a straight-line basis as a reduction to rent expense over the lease term. Credits related to owned aircraft reduce the purchase price of the aircraft, which has the effect of amortizing the credits on a straight-line basis as a reduction in depreciation expense over the life of the related aircraft. The incentives are credits that may be used to purchase spare parts and pay for training and other expenses.

Income Taxes

Income Taxes

        The Company recognizes a liability or asset for the deferred tax consequences of all temporary differences between the tax basis of assets and liabilities and their reported amounts in the consolidated financial statements that will result in taxable or deductible amounts in future years when the reported amounts of the assets and liabilities are recovered or settled.

Net Income (Loss) Per Common Share

Net Income (Loss) Per Common Share

        Basic net income (loss) per common share ("Basic EPS") excludes dilution and is computed by dividing net income (loss) by the weighted average number of common shares outstanding during the period. Diluted net income (loss) per common share ("Diluted EPS") reflects the potential dilution that could occur if stock options or other contracts to issue common stock were exercised or converted into common stock. The computation of Diluted EPS does not assume exercise or conversion of securities that would have an anti-dilutive effect on net income (loss) per common share. During the years ended December 31, 2013, 2012 and 2011, 3,072,000, 3,889,000 and 4,323,000 shares reserved for issuance upon the exercise of outstanding options were excluded from the computation of Diluted EPS respectively, as their inclusion would be anti-dilutive.

        The calculation of the weighted average number of common shares outstanding for Basic EPS and Diluted EPS are as follows for the years ended December 31, 2013, 2012and 2011 (in thousands):

	Year Ended December 31,
	2013		2012		2011
Numerator:
Net Income (Loss)	$	58,956	$	51,157	$	(27,335	)
Denominator:
Denominator for basic earnings per-share weighted average shares		51,688		51,090		52,201
Dilution due to stock options and restricted stock		734		656		—
Denominator for diluted earnings per-share weighted average shares		52,422		51,746		52,201
Basic earnings (loss) per-share	$	1.14	$	1.00	$	(0.52	)
Diluted earnings (loss) per-share	$	1.12	$	0.99	$	(0.52	)

Comprehensive Income (Loss)

Comprehensive Income (Loss)

        Comprehensive income (loss) includes charges and credits to stockholders' equity that are not the result of transactions with the Company's shareholders. Also, comprehensive income (loss) consisted of net income (loss) plus changes in unrealized appreciation (depreciation) on marketable securities and unrealized gain (loss) on foreign currency translation adjustment related to the Company's equity investment in Trip Linhas Aereas, a regional airline operating in Brazil ("Trip") and Mekong Aviation Joint Stock Company, an airline operating in Vietnam ("Air Mekong") (see note 8), net of tax, for the periods indicated (in thousands):

	Year Ended December 31,
	2013			2012			2011
Net Income (Loss)	$	58,956			51,157		$	(27,335	)
Proportionate share of other companies foreign currency translation adjustment, net of tax		66			(251	)		(295	)
Unrealized appreciation (depreciation) on marketable securities, net of tax		(13	)		316			534
Comprehensive income (loss)	$	59,009		$	51,222		$	(27,096	)

Fair Value of Financial Instruments

Fair Value of Financial Instruments

        The carrying amounts reported in the consolidated balance sheets for receivables and accounts payable approximate fair values because of the immediate or short-term maturity of these financial instruments. Marketable securities are reported at fair value based on market quoted prices in the consolidated balance sheets. If quoted prices in active markets are no longer available and the Company has estimated the fair values of these securities utilizing a discounted cash flow analysis as of December 31, 2013. These analyses consider, among other items, the collateralization underlying the security investments, the creditworthiness of the counterparty, the timing of expected future cash flows, and the expectation of the next time the security is expected to have a successful auction. The fair value of the Company's long-term debt is estimated based on current rates offered to the Company for similar debt and was approximately $1,509.2 million as of December 31, 2013, as compared to the carrying amount of $1,470.6 million as of December 31, 2013. The Company's fair value of long-term debt as of December 31, 2012 was $1,744.2 million as compared to the carrying amount of $1,642.0 million as of December 31, 2012.

Segment Reporting

Segment Reporting

        Generally accepted accounting principles require disclosures related to components of a company for which separate financial information is available to, and regularly evaluated by, the Company's chief operating decision maker when deciding how to allocate resources and in assessing performance. The Company's two operating segments consist of the operations conducted by its two subsidiaries, SkyWest Airlines and ExpressJet. Information pertaining to the Company's reportable segments is presented in Note 2, Segment Reporting.

XML

Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2013

Commitments and Contingencies

Schedule of Future Minimum Rental Payments for Operating Leases

The following table summarizes future minimum rental payments required under operating leases that have initial or remaining non-cancelable lease terms in excess of one year as of December 31, 2013 (in thousands):

Year ending December 31,
2014	380,413
2015	331,151
2016	258,464
2017	194,258
2018	153,294
Thereafter	571,783
	1,889,363

Schedule of Employees Under Collective Bargaining Agreements

Employee Group	Approximate Number of Active Employees Represented		Representatives	Status of Agreement
Atlantic Southeast Pilots		1,800	Air Line Pilots Association International	Amendable
Atlantic Southeast Flight Attendants		1,075	International Association of Machinists and Aerospace Workers	Amendable
Atlantic Southeast Flight Controllers		60	Transport Workers Union of America	Amendable
Atlantic Southeast Mechanics		700	International Brotherhood of Teamsters	Amendable
Atlantic Southeast Stock Clerks		70	International Brotherhood of Teamsters	Amendable
ExpressJet Delaware Pilots		2,900	Air Line Pilots Association International	Amendable
ExpressJet Delaware Flight Attendants		1,200	International Association of Machinists and Aerospace Workers	Amendable
ExpressJet Delaware Mechanics		1,000	International Brotherhood of Teamsters	Amendable
ExpressJet Delaware Dispatchers		85	Transport Workers Union of America	Amendable
ExpressJet Delaware Stock Clerks		100	International Brotherhood of Teamsters	Amendable

XML

Retirement Plans and Employee Stock Purchase Plans (Details 2) (2009 Stock Purchase Plan, USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
2009 Stock Purchase Plan
Employee Stock Purchase Plans
Service period required to be completed for an employee to be eligible to participate in plan, minimum	90 days
Ownership interest in Company common stock to disqualify employee from participation in plan, maximum (as a percent)	5.00%
Maximum percentage of base salary which can be contributed by the employees	15.00%
Maximum amount of base salary which can be contributed annually by the employees	$ 21,250
Discount rate at which common stock can be purchased by the plan participant (as a percent)	5.00%
Summary of purchases made under the 2010 and 1995 Employee Stock Purchase Plans
Number of shares purchased	299,786	487,451	300,177
Average price of shares purchased (in dollars per share)	$ 12.33	$ 8.35	$ 14.56

XML

Commitments and Contingencies (Details) (USD $)	12 Months Ended
	Dec. 31, 2013 aircraft	Dec. 31, 2012	Dec. 31, 2011
Commitments and Contingencies
Number of aircraft leased by the entity	570
Future minimum rental payments required under operating leases
2014	$ 380,413,000
2015	331,151,000
2016	258,464,000
2017	194,258,000
2018	153,294,000
Thereafter	571,783,000
Total	1,889,363,000
Rental expense for non-cancelable aircraft operating leases	325,360,000	333,637,000	346,526,000
Minimum rental expense for airport station rents	$ 35,100,000	$ 43,500,000	$ 42,600,000
Leveraged lease agreements term, maximum	12 years

XML

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (USD $) In Thousands, unless otherwise specified	Total	Common Stock	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive Income (Loss)
Balance at Dec. 31, 2010	$ 1,420,923	$ 589,610	$ 1,139,739	$ (309,628)	$ 1,202
Balance (in shares) at Dec. 31, 2010		75,245		(21,072)
Increase (Decrease) in Stockholders' Equity
Net income (loss)	(27,335)		(27,335)
Proportionate share of other companies foreign currency translation adjustment, net of tax of $8, $154 and $180 for the year ended 2013, 2012 and 2011, respectively	(295)				(295)
Net unrealized appreciation (depreciation) on marketable securities net of tax of $43, $194 and $327 for the year ended 2013, 2012 and 2011, respectively	534				534
Exercise of common stock options and issuance of restricted stock	70	70
Exercise of common stock options and issuance of restricted stock (in shares)		289
Sale of common stock under employee stock purchase plan	4,372	4,372
Sale of common stock under employee stock purchase plan (in shares)		300
Stock based compensation expense related to the issuance of stock options and restricted stock	5,365	5,365
Tax (deficiency) benefit from exercise of common stock options	(432)	(432)
Treasury stock purchases	(60,681)			(60,681)
Treasury stock purchases (in shares)				(4,149)
Cash dividends declared ($0.16 per share)	(8,260)		(8,260)
Balance at Dec. 31, 2011	1,334,261	598,985	1,104,144	(370,309)	1,441
Balance (in shares) at Dec. 31, 2011		75,834		(25,221)
Increase (Decrease) in Stockholders' Equity
Net income (loss)	51,157		51,157
Proportionate share of other companies foreign currency translation adjustment, net of tax of $8, $154 and $180 for the year ended 2013, 2012 and 2011, respectively	(251)				(251)
Net unrealized appreciation (depreciation) on marketable securities net of tax of $43, $194 and $327 for the year ended 2013, 2012 and 2011, respectively	316				316
Exercise of common stock options and issuance of restricted stock	1,879	1,879
Exercise of common stock options and issuance of restricted stock (in shares)		392
Sale of common stock under employee stock purchase plan	4,068	4,068
Sale of common stock under employee stock purchase plan (in shares)		487
Stock based compensation expense related to the issuance of stock options and restricted stock	4,693	4,693
Tax (deficiency) benefit from exercise of common stock options	138	138
Treasury stock purchases	(902)			(902)
Treasury stock purchases (in shares)				(59)
Cash dividends declared ($0.16 per share)	(8,184)		(8,184)
Balance at Dec. 31, 2012	1,387,175	609,763	1,147,117	(371,211)	1,506
Balance (in shares) at Dec. 31, 2012		76,713		(25,280)
Increase (Decrease) in Stockholders' Equity
Net income (loss)	58,956		58,956
Proportionate share of other companies foreign currency translation adjustment, net of tax of $8, $154 and $180 for the year ended 2013, 2012 and 2011, respectively	66				66
Net unrealized appreciation (depreciation) on marketable securities net of tax of $43, $194 and $327 for the year ended 2013, 2012 and 2011, respectively	(13)				(13)
Exercise of common stock options and issuance of restricted stock	835	835
Exercise of common stock options and issuance of restricted stock (in shares)		313
Sale of common stock under employee stock purchase plan	3,696	3,696
Sale of common stock under employee stock purchase plan (in shares)		300
Stock based compensation expense related to the issuance of stock options and restricted stock	4,363	4,363
Tax (deficiency) benefit from exercise of common stock options	(146)	(146)
Treasury stock purchases	(11,739)			(11,739)
Treasury stock purchases (in shares)				(816)
Cash dividends declared ($0.16 per share)	(8,254)		(8,254)
Balance at Dec. 31, 2013	$ 1,434,939	$ 618,511	$ 1,197,819	$ (382,950)	$ 1,559
Balance (in shares) at Dec. 31, 2013		77,326		(26,096)

XML

Long-term Debt

12 Months Ended

Dec. 31, 2013

Long-term Debt

Long-term Debt

(3) Long-term Debt

        Long-term debt consisted of the following as of December 31, 2013 and 2012 (in thousands):

	December 31, 2013			December 31, 2012
Notes payable to banks, due in semi-annual installments, variable interest based on LIBOR, or with interest rates ranging from 1.34% to 2.55% through 2014 to 2020, secured by aircraft	$	224,915		$	273,515
Notes payable to a financing company, due in semi-annual installments, variable interest based on LIBOR, or with interest rates ranging from 0.70% to 2.36% through 2014 to 2021, secured by aircraft		392,660			434,716
Notes payable to banks, due in semi-annual installments plus interest at 6.06% to 7.18% through 2021, secured by aircraft		149,477			168,937
Notes payable to a financing company, due in semi-annual installments plus interest at 5.78% to 6.23% through 2019, secured by aircraft		32,528			39,548
Notes payable to banks, due in monthly installments plus interest of 3.15% to 8.18% through 2025, secured by aircraft		623,315			665,867
Notes payable to banks, due in semi-annual installments, plus interest at 6.05% through 2020, secured by aircraft		15,740			17,872
Notes payable to a bank, due in monthly installments interest based on LIBOR plus interest at 2.00% to 4.00% through 2016, secured by aircraft		31,933			41,567
Long-term debt		1,470,568			1,642,022
Less current maturities		(177,389	)		(171,454	)
Long-term debt, net of current maturities		1,293,179			1,470,568

        As of December 31, 2013, the Company had $1.5 billion of long-term debt obligations related to the acquisition of CRJ200, CRJ700 and CRJ900 aircraft. The average effective interest rate on the debt related to the CRJ aircraft was approximately 4.5% at December 31, 2013.

        The aggregate amounts of principal maturities of long-term debt as of December 31, 2013 were as follows (in thousands):

2014	177,389
2015	184,510
2016	188,240
2017	161,735
2018	139,020
Thereafter	619,674
	1,470,568

        As of December 31, 2013 and 2012, SkyWest Airlines had a $25 million line of credit. As of December 31, 2013 and 2012, SkyWest Airlines had no amount outstanding under the facility. The facility expires on March 31, 2014 and has a variable interest rate of Libor plus 3.0%.

        As of December 31, 2013, the Company had $88.5 million in letters of credit and surety bonds outstanding with various banks and surety institutions.

        As of December 31, 2013, the Company was in compliance with all debt covenants to which it was subject.

XML

Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2013

Fair Value Measurements

Schedule of assets measured at fair value on a recurring basis

Assets measured at fair value on a recurring basis are summarized below (in thousands):

	Fair Value Measurements as of December 31, 2013
	Total		Level 1		Level 2		Level 3
Marketable Securities
Bonds	$	487,049	$	—	$	487,049	$	—
Asset backed securities		190		—		190		—
		487,239		—		487,239		—
Cash, Cash Equivalents and Restricted Cash	$	182,855		182,855		—		—
Other Assets(a)		2,245		—		—		2,245
Total Assets Measured at Fair Value	$	672,339	$	182,855	$	487,239	$	2,245

	Fair Value Measurements as of December 31, 2012
	Total		Level 1		Level 2		Level 3
Marketable Securities
Bonds	$	552,289	$	—	$	552,289	$	—
Commercial paper		3,514		—		3,514		—
Asset backed securities		314		—		314		—
		556,117		—		556,117		—
Cash, Cash Equivalents and Restricted Cash		153,325		153,325		—		—
Other Assets(a)		3,844		—		—		3,844
Total Assets Measured at Fair Value	$	713,286	$	153,325	$	556,117	$	3,844

(a)

Auction rate securities included in "Other assets" in the Consolidated Balance Sheet

Schedule of fair value measurements using significant unobservable inputs

The following table presents the Company's assets measured at fair value on a recurring basis using significant unobservable inputs (Level 3) at December 31, 2013 (in thousands):

Fair Value Measurements Using Significant Unobservable Inputs

(Level 3)

	Auction Rate Securities
Balance at January 1, 2013	$	3,844
Total realized and unrealized gains or (losses)
Included in earnings		—
Included in other comprehensive income		(71	)
Transferred out		—
Settlements		(1,528	)
Balance at December 31, 2013	$	2,245

XML

Income Taxes (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Current tax provision (benefit):
Federal	$ 1,767
State	343	441	396
Total current payable	2,110	441	396
Deferred tax provision (benefit):
Federal	34,728	31,791	(21,533)
State	2,738	2,507	(1,698)
Total deferred payable	37,466	34,298	(23,231)
Provision (benefit) for income taxes	$ 39,576	$ 34,739	$ (22,835)

XML

SCHEDULE II-VALUATION AND QUALIFYING ACCOUNTS

12 Months Ended

Dec. 31, 2013

SCHEDULE II-VALUATION AND QUALIFYING ACCOUNTS

SCHEDULE II-VALUATION AND QUALIFYING ACCOUNTS

SCHEDULE II—VALUATION AND QUALIFYING ACCOUNTS
For the Years Ended December 31, 2013, 2012 and 2011
(Dollars in thousands)

Description	Balance at Beginning of Year		Additions Charged to Costs and Expenses		Deductions			Balance at End of Year
Year Ended December 31, 2013:
Allowance for inventory obsolescence	$	9,189		949		—			10,138
Allowance for doubtful accounts receivable		94		—		—			94
		9,283		949		—			10,232
Year Ended December 31, 2012:
Allowance for inventory obsolescence	$	8,248		941		—		$	9,189
Allowance for doubtful accounts receivable		240		—		(146	)		94
		8,488		941		(146	)		9,283
Year Ended December 31, 2011:
Allowance for inventory obsolescence	$	7,541	$	707		—		$	8,248
Allowance for doubtful accounts receivable		47		193		—			240
		7,588		900		—			8,488