10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, DC 20549

FORM 10-Q

(Mark One)

T ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended June 30, 2012

OR

£ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from to

Commission File Number 1-8957

ALASKA AIR GROUP, INC.

(Exact name of registrant as specified in its charter)

Delaware	91-1292054
(State or other jurisdiction of incorporation or organization	(I.R.S. Employer Identification No.)

19300 International Boulevard, Seattle, Washington 98188

(Address of principal executive offices)

Registrant's telephone number, including area code: (206) 392-5040

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 for 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 T  No £

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 T No £

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 definitions of “large accelerated filer”, "accelerated filer" and "smaller reporting company" in Rule 12b-2 of the Exchange Act (Check one):

Large accelerated filerT Accelerated filer  £ Non-accelerated filer   £ Smaller reporting company   £

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

The registrant has 70,494,808 common shares, par value $1.00, outstanding at July 31, 2012.

ALASKA AIR GROUP, INC.

FORM 10-Q

FOR THE QUARTER ENDED JUNE 30, 2012

TABLE OF CONTENTS

PART I.	FINANCIAL INFORMATION	4
ITEM 1.	CONDENSED CONSOLIDATED FINANCIAL STATEMENTS	4
	CONDENSED CONSOLIDATED BALANCE SHEETS	4
	CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS	6
	CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME	7
	CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS	8
	NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS	9
ITEM 2.	MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS	22
ITEM 3.	QUANTITATIVE AND QUALITATIVE DISCLOSURE ABOUT MARKET RISK	39
ITEM 4.	CONTROLS AND PROCEDURES	39
PART II.	OTHER INFORMATION	39
ITEM 1.	LEGAL PROCEEDINGS	39
ITEM 1A.	RISK FACTORS	39
ITEM 2.	UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS	40
ITEM 3.	DEFAULTS UPON SENIOR SECURITIES	40
ITEM 4.	MINE SAFETY DISCLOSURES	40
ITEM 5.	OTHER INFORMATION	40
ITEM 6.	EXHIBITS	40
	SIGNATURES	41

As used in this Form 10-Q, the terms “Air Group,” the "Company," “our,” “we” and "us," refer to Alaska Air Group, Inc. and its subsidiaries, unless the context indicates otherwise. Alaska Airlines, Inc. and Horizon Air Industries, Inc. are referred to as “Alaska” and “Horizon,” respectively, and together as our “airlines.”

2

CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS

Cautionary Note Regarding Forward-Looking Statements

In addition to historical information, this Form 10-Q contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, Section 21E of the Securities Exchange Act of 1934, as amended, and the Private Securities Litigation Reform Act of 1995. Forward-looking statements are those that predict or describe future events or trends and that do not relate solely to historical matters. You can generally identify forward-looking statements as statements containing the words "believe," "expect," "will," "anticipate," "intend," "estimate," "project," "assume" or other similar expressions, although not all forward-looking statements contain these identifying words. Forward-looking statements involve risks and uncertainties that could cause actual results to differ materially from historical experience or the Company’s present expectations. Some of the things that could cause our actual results to differ from our expectations are:

• changes in our operating costs, primarily fuel, which can be volatile;

• general economic conditions, including the impact of those conditions on customer travel behavior;

• the competitive environment in our industry;

• our ability to meet our cost reduction goals;

• operational disruptions;

• an aircraft accident or incident;

• labor disputes and our ability to attract and retain qualified personnel;

• our significant indebtedness;

• the concentration of our revenue from a few key markets;

• actual or threatened terrorist attacks, global instability and potential U.S. military actions or activities;

• our reliance on automated systems and the risks associated with changes made to those systems;

• changes in laws and regulations.

You should not place undue reliance on our forward-looking statements because the matters they describe are subject to known and unknown risks, uncertainties and other unpredictable factors, many of which are beyond our control. Our forward-looking statements are based on the information currently available to us and speak only as of the date on which this report was filed with the SEC. We expressly disclaim any obligation to issue any updates or revisions to our forward-looking statements, even if subsequent events cause our expectations to change regarding the matters discussed in those statements. Over time, our actual results, performance or achievements will likely differ from the anticipated results, performance or achievements that are expressed or implied by our forward-looking statements, and such differences might be significant and materially adverse to our shareholders. For a discussion of these and other risk factors, see Item 1A "Risk Factors” of the Company’s annual report on Form 10-K for the year ended December 31, 2011. Please consider our forward-looking statements in light of those risks as you read this report.

3

PART I

ITEM 1. CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

CONDENSED CONSOLIDATED BALANCE SHEETS (unaudited)

(in millions)	June 30, 2012		December 31, 2011
ASSETS
Current Assets
Cash and cash equivalents	$	35.4	$	102.2
Marketable securities	1,150.0		1,038.7
Total cash and marketable securities	1,185.4		1,140.9
Receivables - net	169.4		136.4
Inventories and supplies - net	47.8		44.3
Deferred income taxes	152.1		134.2
Fuel hedge contracts	22.0		46.7
Prepaid expenses and other current assets	121.7		93.0
Total Current Assets	1,698.4		1,595.5
Property and Equipment
Aircraft and other flight equipment	4,099.5		4,041.8
Other property and equipment	857.1		762.3
Deposits for future flight equipment	331.4		262.5
	5,288.0		5,066.6
Less accumulated depreciation and amortization	1,740.6		1,665.1
Total Property and Equipment - Net	3,547.4		3,401.5
Fuel Hedge Contracts	39.3		70.2
Other Assets	138.5		127.8
Total Assets	$	5,423.6	$	5,195.0

See accompanying notes to consolidated financial statements.

4

ALASKA AIR GROUP, INC.

CONSOLIDATED BALANCE SHEETS (unaudited)

(in millions except share amounts)	June 30, 2012			December 31, 2011
LIABILITIES AND SHAREHOLDERS' EQUITY
Current Liabilities
Accounts payable	$	110.8		$	103.6
Accrued aircraft rent	9.7			31.6
Accrued wages, vacation and payroll taxes	134.7			163.8
Other accrued liabilities	558.5			513.3
Air traffic liability	667.2			489.4
Current portion of long-term debt	183.4			207.9
Total Current Liabilities	1,664.3			1,509.6
Long-Term Debt, Net of Current Portion	957.1			1,099.0
Other Liabilities and Credits
Deferred income taxes	447.5			362.9
Deferred revenue	414.0			410.2
Obligation for pension and postretirement medical benefits	452.9			463.4
Other liabilities	204.8			176.7
	1,519.2			1,413.2
Commitments and Contingencies
Shareholders' Equity
Preferred stock, $1 par value Authorized: 5,000,000 shares, none issued or outstanding	—			—
Common stock, $1 par value Authorized: 100,000,000 shares, Issued: 2012 - 70,723,900 shares; 2011 - 75,733,044 shares	70.7			37.9
Capital in excess of par value	674.2			840.0
Treasury stock (common), at cost: 2012 - 0 shares; 2011 - 4,783,494 shares	—			(125.3		)
Accumulated other comprehensive loss	(380.8		)	(390.0		)
Retained earnings	918.9			810.6
	1,283.0			1,173.2
Total Liabilities and Shareholders' Equity	$	5,423.6		$	5,195.0

See accompanying notes to consolidated financial statements.

5

ALASKA AIR GROUP, INC.

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (unaudited)

	Three Months Ended June 30,						Six Months Ended June 30,
(in millions except per share amounts)	2012			2011			2012			2011
Operating Revenues
Passenger
Mainline	$	862.7		$	774.2		$	1,586.1		$	1,433.5
Regional	187.6			179.0			360.4			340.6
Total passenger revenue	1,050.3			953.2			1,946.5			1,774.1
Freight and mail	30.6			29.1			55.0			54.0
Other - net	132.3			127.9			251.0			247.3
Total Operating Revenues	1,213.2			1,110.2			2,252.5			2,075.4
Operating Expenses
Wages and benefits	258.9			242.8			515.5			492.1
Variable incentive pay	21.5			17.9			37.5			34.3
Aircraft fuel, including hedging gains and losses	431.8			397.5			750.6			592.0
Aircraft maintenance	54.5			49.1			104.6			102.4
Aircraft rent	29.0			29.0			57.0			59.5
Landing fees and other rentals	60.5			59.9			123.0			117.8
Contracted services	50.5			46.6			98.2			90.1
Selling expenses	44.2			45.8			85.3			85.6
Depreciation and amortization	65.8			61.7			129.5			122.0
Food and beverage service	19.6			17.1			37.4			32.2
Other	61.1			58.2			125.7			118.9
Fleet transition expenses	—			26.8			—			36.9
Total Operating Expenses	1,097.4			1,052.4			2,064.3			1,883.8
Operating Income	115.8			57.8			188.2			191.6
Nonoperating Income (Expense)
Interest income	5.1			6.3			10.0			13.9
Interest expense	(17.2		)	(20.0		)	(33.8		)	(43.4		)
Interest capitalized	3.5			1.6			8.0			3.4
Other - net	1.9			1.3			3.3			2.2
	(6.7		)	(10.8		)	(12.5		)	(23.9		)
Income before income tax	109.1			47.0			175.7			167.7
Income tax expense	41.6			18.2			67.4			64.7
Net Income	$	67.5		$	28.8		$	108.3		$	103.0
Basic Earnings Per Share:	$	0.95		$	0.40		$	1.52		$	1.43
Diluted Earnings Per Share:	$	0.93		$	0.39		$	1.50		$	1.40
Shares used for computation:
Basic	70.996			71.965			71.069			71.977
Diluted	72.200			73.473			72.325			73.551

See accompanying notes to consolidated financial statements.

6

ALASKA AIR GROUP, INC.

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE OPERATIONS (unaudited)

	Three Months Ended June 30,						Six Months Ended June 30,
(in millions)	2012			2011			2012			2011
Net Income	$	67.5		$	28.8		$	108.3		$	103.0
Other comprehensive income (loss):
Related to marketable securities:
Unrealized holding gains arising during the period	0.6			3.9			4.3			1.7
Reclassification adjustment for gains included in net income	(1.5		)	(0.9		)	(2.5		)	(1.5		)
Income tax expense (benefit)	0.3			(1.2		)	(0.7		)	(0.2		)
Total	(0.6		)	1.8			1.1			—
Related to employee benefit plans:
Prior service cost arising during period	9.8			6.4			19.7			12.7
Income tax benefit	(3.7		)	(2.4		)	(7.4		)	(4.8		)
Total	6.1			4.0			12.3			7.9
Related to interest rate derivative instruments:
Unrealized holding losses arising during the period	(6.4		)	(3.3		)	(3.2		)	(1.1		)
Income tax expense (benefit)	2.5			1.2			(1.0		)	0.4
Total	(3.9		)	(2.1		)	(4.2		)	(0.7		)
Other comprehensive income	1.6			3.7			9.2			7.2
Comprehensive income	$	69.1		$	32.5		$	117.5		$	110.2

See accompanying notes to consolidated financial statements.

7

ALASKA AIR GROUP, INC.

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (unaudited)

	Six Months Ended June 30,
(in millions)	2012			2011
Cash flows from operating activities:
Net income	$	108.3		$	103.0
Adjustments to reconcile net income to net cash provided by operating activities:
Fleet transition expenses	—			36.9
Depreciation and amortization	129.5			122.0
Stock-based compensation and other	5.5			7.3
Changes in certain assets and liabilities:
Changes in fair values of open fuel hedge contracts	45.3			(25.0		)
Changes in deferred income taxes	57.5			57.8
Increase in air traffic liability	177.8			172.1
Increase (decrease) in deferred revenue	3.8			(16.8		)
Increase in other long-term liabilities	4.9			53.8
Pension contribution	(23.6		)	(22.2		)
Other - net	(53.3		)	(120.2		)
Net cash provided by operating activities	455.7			368.7
Cash flows from investing activities:
Property and equipment additions:
Aircraft and aircraft purchase deposits	(228.4		)	(214.8		)
Other flight equipment	(6.7		)	(11.1		)
Other property and equipment	(19.7		)	(15.2		)
Total property and equipment additions	(254.8		)	(241.1		)
Assets constructed for others (Terminal 6 at LAX)	(50.0		)	(44.6		)
Purchases of marketable securities	(537.2		)	(427.7		)
Sales and maturities of marketable securities	430.4			459.0
Proceeds from disposition of assets and changes in restricted deposits	0.9			12.5
Net cash used in investing activities	(410.7		)	(241.9		)
Cash flows from financing activities:
Long-term debt payments	(165.4		)	(125.4		)
Proceeds from sale-leaseback transactions	49.3			—
Common stock repurchases	(26.3		)	(33.3		)
Proceeds and tax benefit from issuance of common stock	14.0			14.9
Other financing activities	16.6			(5.5		)
Net cash used in financing activities	(111.8		)	(149.3		)
Net decrease in cash and cash equivalents	(66.8		)	(22.5		)
Cash and cash equivalents at beginning of year	102.2			89.5
Cash and cash equivalents at end of the period	$	35.4		$	67.0
Supplemental disclosure:
Cash paid (refunded) during the period for:
Interest (net of amount capitalized)	$	24.6		$	39.7
Income taxes	(2.5		)	0.1
Non-cash transactions:
Assets constructed related to Terminal 6 at LAX	25.8			—

See accompanying notes to consolidated financial statements.

8

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (unaudited)

Alaska Air Group, Inc.

June 30, 2012

NOTE 1. GENERAL AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Organization and Basis of Presentation

The interim condensed consolidated financial statements include the accounts of Alaska Air Group, Inc. (Air Group or the Company) and its subsidiaries, Alaska Airlines, Inc. (Alaska) and Horizon Air Industries, Inc. (Horizon), through which the Company conducts substantially all of its operations. All intercompany balances and transactions have been eliminated. These financial statements have been prepared in accordance with accounting principles generally accepted in the United States (“GAAP”) for interim financial information. Consistent with these requirements, this Form 10-Q does not include all the information required by GAAP for complete financial statements. As a result, this Form 10-Q should be read in conjunction with the Consolidated Financial Statements and accompanying Notes in the Form 10-K for the year ended December 31, 2011. In the opinion of management, all adjustments have been made that are necessary to present fairly the Company’s financial position as of June 30, 2012, as well as the results of operations for the three and six months ended June 30, 2012 and 2011. The adjustments made were of a normal recurring nature.

In preparing these statements, the Company is required to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent liabilities, as well as the reported amounts of revenues and expenses. Due to seasonal variations in the demand for air travel, the volatility of aircraft fuel prices, changes in global economic conditions and other factors, operating results for the three and six months ended June 30, 2012 are not necessarily indicative of operating results for the entire year.

Reclassifications

Certain reclassifications have been made to conform the prior-year data to the current format. During the second quarter of 2012, the Company changed the classification of ancillary revenues, such as checked-bag fees, ticket change fees, and others, from "Passenger revenue" to "Other-net" revenue to enhance comparability of passenger revenue among peers in the industry. The Company has reclassified ancillary revenues in the current period and all prior periods, with the reclassification having no impact on total revenue for any of the respective periods. The table below shows operating revenues originally reported in the Form 10-Q for the three and six months ended June 30, 2011 and the effect of the reclassification on the condensed consolidated statement of operations (in millions):

	Three Months Ended June 30, 2011				Six Months Ended June 30, 2011
	As Reclassified		Reported		As Reclassified		Reported
Operating Revenues
Passenger
Mainline	$	774.2	$	819.9	$	1,433.5	$	1,522.3
Regional	179.0		194.3		340.6		370.8
Total passenger revenue	953.2		1,014.2		1,774.1		1,893.1
Freight and mail	29.1		29.1		54.0		54.0
Other - net	127.9		66.9		247.3		128.3
Total Operating Revenues	$	1,110.2	$	1,110.2	$	2,075.4	$	2,075.4

9

NOTE 2. CASH, CASH EQUIVALENTS AND MARKETABLE SECURITIES

Components for cash, cash equivalents and marketable securities (in millions):

June 30, 2012	Cost Basis		Unrealized Gains		Unrealized Losses			Fair Value
Cash	$	23.2	$	—	$	—		$	23.2
Commercial paper, money market funds and other securities	12.2		—		—			12.2
Cash and cash equivalents	35.4		—		—			35.4
U.S. government and agency securities	366.0		2.8		—			368.8
Foreign government bonds	41.4		0.9		—			42.3
Asset-back securities	90.3		0.4		—			90.7
Mortgage-back securities	109.6		0.9		(0.1		)	110.4
Corporate notes and bonds	516.8		6.5		(0.5		)	522.8
Municipal securities	14.9		0.1		—			15.0
Marketable securities	1,139.0		11.6		(0.6		)	1,150.0
Total	$	1,174.4	$	11.6	$	(0.6	)	$	1,185.4

December 31, 2011	Cost Basis		Unrealized Gains		Unrealized Losses			Fair Value
Cash	$	62.1	$	—	$	—		$	62.1
Money market funds	40.1		—		—			40.1
Cash and cash equivalents	102.2		—		—			102.2
U.S. government and agency securities	292.5		3.4		—			295.9
Foreign government bonds	24.9		0.5		—			25.4
Asset-back securities	58.2		0.1		(0.3		)	58.0
Mortgage-back securities	124.1		1.1		(0.3		)	124.9
Corporate notes and bonds	518.0		7.0		(2.4		)	522.6
Municipal securities	11.8		0.1		—			11.9
Marketable securities	1,029.5		12.2		(3.0		)	1,038.7
Total	$	1,131.7	$	12.2	$	(3.0	)	$	1,140.9

Activity for marketable securities (in millions):  

	Three Months Ended June 30,				Six Months Ended June 30,
	2012		2011		2012		2011
Proceeds from sales and maturities	$	242.3	$	145.0	$	430.4	$	459.0
Gross realized gains	2.0		1.4		3.6		3.3
Gross realized losses	0.5		0.4		0.8		1.7
Other-than-temporary impairments on investments	—		—		0.3		—

Of the marketable securities on hand at June 30, 2012, 9.8% mature in 2012, 29.5% in 2013, and 60.7% thereafter.

Investments with continuous unrealized losses (in millions):

	Less than 12 months					Greater than 12 months
June 30, 2012	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses		Total Fair Value		Total Unrealized Losses
Mortgage-backed obligations	$	26.3	$	(0.1	)	$	—	$	—	$	26.3	$	(0.1	)
Corporate notes and bonds	106.3		(0.5		)	—		—		106.3		(0.5		)
Total	$	132.6	$	(0.6	)	$	—	$	—	$	132.6	$	(0.6	)

10

	Less than 12 months					Greater than 12 months
December 31, 2011	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Total Fair Value		Total Unrealized Losses
Asset-backed obligations	$	31.7	$	(0.1	)	$	1.1	$	(0.2	)	$	32.8	$	(0.3	)
Mortgage-backed obligations	35.1		(0.2		)	1.9		(0.1		)	37.0		(0.3		)
Corporate notes and bonds	137.4		(2.4		)	1.0		—			138.4		(2.4		)
Total	$	204.2	$	(2.7	)	$	4.0	$	(0.3	)	$	208.2	$	(3.0	)

Unrealized losses from fixed-income securities are primarily attributable to changes in interest rates. Management does not believe any remaining unrealized losses represent other-than-temporary impairments based on our evaluation of available evidence as of June 30, 2012.

NOTE 3. DERIVATIVE INSTRUMENTS

Fuel Hedge Contracts

The Company’s operations are inherently dependent upon the price and availability of aircraft fuel. To manage economic risks associated with fluctuations in aircraft fuel prices, the Company periodically enters into call options for crude oil and swap agreements for jet fuel refining margins.

As of June 30, 2012, the Company had fuel hedge contracts outstanding covering 10.3 million barrels of crude oil that will be settled from July 2012 to June 2015. Refer to the contractual obligations and commitments section of Item 2 for further information.

Interest Rate Swap Agreements

The Company has interest rate swap agreements with a third party designed to hedge the volatility of the underlying variable interest rate in the Company's aircraft lease agreements for six Boeing 737-800 aircraft. The agreements stipulate that the Company pay a fixed interest rate over the term of the contract and receive a floating interest rate. All significant terms of the swap agreement match the terms of the lease agreements, including interest-rate index, rate reset dates, termination dates and underlying notional values. The agreements expire from February 2020 through March 2021 to coincide with the lease termination dates.

Fair Values of Derivative Instruments

Fair values of derivative instruments on the consolidated balance sheet (in millions):

	June 30, 2012			December 31, 2011
Derivative Instruments Not Designated as Hedges
Fuel hedge contracts
Fuel hedge contracts, current assets	$	22.0		$	46.7
Fuel hedge contracts, noncurrent assets	39.3			70.2
Fuel hedge contracts, current liabilities	—			(10.3		)
Derivative Instruments Designated as Hedges
Interest rate swaps
Other accrued liabilities	(5.7		)	(5.2		)
Other liabilities	(26.3		)	(23.6		)
Losses in Accumulated Other Comprehensive Loss (AOCL)	(32.0		)	(28.8		)

The net cash received (paid) for new positions and settlements was $(11.1) million and $9.6 million during the three months ended June 30, 2012 and 2011, respectively. The net cash received (paid) for new positions and settlements was $(17.5) million and $15.0 million during the six months ended June 30, 2012 and 2011, respectively.

11

Pretax effect of derivative instruments on earnings (in millions):

	Three Months Ended June 30,						Six Months Ended June 30,
	2012			2011			2012			2011
Derivative Instruments Not Designated as Hedges
Fuel hedge contracts
Gains (losses) recognized in aircraft fuel expense	$	(81.4	)	$	(54.4	)	$	(62.9	)	$	40.1
Derivative Instruments Designated as Hedges
Interest rate swaps
Losses recognized in aircraft rent	(1.4		)	(1.6		)	(2.9		)	(3.1		)
Losses recognized in Other Comprehensive Income (OCI)	(7.8		)	(4.9		)	(6.1		)	(4.2		)

The amounts shown as recognized in aircraft rent for cash flow hedges (interest rate swaps) represent the realized losses transferred out of AOCL to aircraft rent. The amounts shown as recognized in OCI are prior to the losses recognized in aircraft rent during the period. The Company expects $5.7 million to be reclassified from OCI to aircraft rent within the next twelve months.

Credit Risk and Collateral

The Company is exposed to credit losses in the event of non-performance by counterparties to these derivative instruments. To mitigate exposure, the Company periodically reviews the counterparties' nonperformance by monitoring the absolute exposure levels and credit ratings. The Company maintains security agreements with a number of its counterparties which may require the Company to post collateral if the fair value of the selected derivative instruments fall below specified mark-to-market thresholds. The posted collateral does not offset the fair value of the derivative instruments and is included in "Prepaid expenses and other current assets" on the consolidated balance sheet.

The Company posted collateral of $17.5 million and $0.9 million as of June 30, 2012 and December 31, 2011, respectively. The collateral was provided to one counterparty associated with the net liability position of the interest rate swap agreements offset by the net asset position of the fuel hedge contracts under a master netting arrangement.

NOTE 4. FAIR VALUE MEASUREMENTS

Fair Value of Financial Instruments on a Recurring Basis

Fair values of financial instruments on the consolidated balance sheet (in millions):

June 30, 2012	Level 1		Level 2			Total
Assets
Marketable securities
U.S. government and agency securities	$	368.8	$	—		$	368.8
Foreign government bonds	—		42.3			42.3
Asset-back securities	—		90.7			90.7
Mortgage-back securities	—		110.4			110.4
Corporate notes and bonds	—		522.8			522.8
Municipal securities	—		15.0			15.0
Derivative instruments
Fuel hedge contracts	—		61.3			61.3
Liabilities
Derivative instruments
Interest rate swap agreements	—		(32.0		)	(32.0		)

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December 31, 2011	Level 1		Level 2			Total
Assets
Marketable securities
U.S. government and agency securities	$	295.9	$	—		$	295.9
Foreign government bonds	—		25.4			25.4
Asset-back securities	—		58.0			58.0
Mortgage-back securities	—		124.9			124.9
Corporate notes and bonds	—		522.6			522.6
Municipal securities	—		11.9			11.9
Derivative instruments
Fuel hedge contracts	—		116.9			116.9
Liabilities
Derivative instruments
Fuel hedge contracts	—		(10.3		)	(10.3		)
Interest rate swap agreements	—		(28.8		)	(28.8		)

The Company uses the market and income approach to determine the fair value of marketable securities. U.S. government securities are Level 1 as the fair value is based on quoted prices in active markets. Foreign governments bonds, asset-back securities, mortgage-back securities, corporate notes and bonds, and municipal securities are Level 2 as the fair value is based on industry standard valuation models that are calculated based on observable inputs such as quoted interest rates, yield curves, credit ratings of the security and other observable market information.

The Company uses the market approach and the income approach to determine the fair value of derivative instruments. Fuel hedge contracts are over-the-counter, are not exchange traded and determined based on observable inputs that are readily available in active markets or can be derived from information available in active, quoted markets. Interest rate swap agreements are Level 2 as the fair value of these contracts is determined based on the difference between the fixed interest rate in the agreements and the observable LIBOR-based interest forward rates at period end, multiplied by the total notional value.

The Company has no other financial assets that are measured at fair value on a nonrecurring basis at June 30, 2012.

Fair Value of Other Financial Instruments

The Company used the following methods and assumptions to determine the fair value of financial instruments that are not recognized at fair value as described below.

Cash and Cash Equivalents: Carried at amortized costs, which approximates fair value.

Debt: The carrying amount of the Company's variable-rate debt approximates fair values. For fixed-rate debt, the Company uses the income approach to determine the estimated fair value, by using discounted cash flow using borrowing rates for comparable debt over the weighted life of the outstanding debt. The estimated fair value of the fixed-rate debt is Level 3 as certain inputs used are unobservable.

Fixed-rate debt that is not carried at fair value on the consolidated balance sheet and the estimated fair value of long-term fixed-rate debt (in millions):

	June 30, 2012		December 31, 2011
Carrying amount	$	933.3	$	1,002.5
Fair value	1,016.3		1,075.8

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NOTE 5. ASSETS CONSTRUCTED FOR OTHERS - TERMINAL 6 AT LOS ANGELES INTERNATIONAL AIRPORTS (LAX)

In March 2012, the Company placed into service assets constructed for others (Terminal 6 at LAX), including a new baggage system, additional gates, new common use systems, expansion of security screening checkpoints, and a new ticket lobby, all of which were constructed for the City of Los Angeles and Los Angeles World Airports (LAWA). Additionally, the Company placed into service proprietary renovations in the ticketing lobby and at the new gates included in Terminal 6. The majority of the assets constructed for LAX will be acquired by the City of Los Angeles and LAWA.

For accounting and financial reporting purposes, the Company is considered to be the owners of the project during construction and will not be able to qualify for sale and leaseback accounting when the non-proprietary assets are sold to the City of Los Angeles due to the Company's continuing involvement with the project. As a result, all of the costs incurred to fund the project are included in "Other property and equipment" and all amounts that have been and will be reimbursed will be in "Other liabilities" on the balance sheet. These assets and liabilities are summarized in the table below (in millions):

	June 30, 2012		December 31, 2011
Proprietary assets of T6 at LAX	$	16.3	$	8.7
Assets constructed for others (T6 at LAX)	219.2		143.4
Other property and equipment	$	235.5	$	152.1
Other liabilities	$	46.3	$	17.7

Included in the asset balances above is capitalized interest of $6.0 million and $4.5 million at June 30, 2012 and December 31, 2011, respectively.

The assets will be depreciated over the life of the lease based on the straight-line method, while the liability will amortize using the effective interest method based on the lease rental payments. Because the Company will only operate a small portion of the gates in the new terminal, the asset and liability will depreciate and amortize to an estimated fair value at the end of the lease term, at which time we may derecognize our obligation or we may extend our lease term.

Future minimum payments related to the Terminal 6 lease are included in facility leases described in Note 10.

NOTE 6. MILEAGE PLAN

Alaska's Mileage Plan liabilities and deferrals are included in the consolidated balance sheets (in millions) as follows:

	June 30, 2012		December 31, 2011
Current Liabilities:
Other accrued liabilities	$	289.1	$	271.4
Other Liabilities and Credits:
Deferred revenue	397.8		392.2
Other liabilities	17.2		16.9
Total	$	704.1	$	680.5

Alaska's Mileage Plan revenue is included in the consolidated statements of operations (in millions) as follows:

	Three Months Ended June 30,				Six Months Ended June 30,
	2012		2011		2012		2011
Passenger revenues	$	48.2	$	54.2	$	90.8	$	104.5
Other-net revenues	55.2		51.6		102.7		97.2
Total Mileage Plan revenues	$	103.4	$	105.8	$	193.5	$	201.7

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NOTE 7. LONG-TERM DEBT

Long-term debt obligations on the consolidated balance sheet (in millions):

	June 30, 2012			December 31, 2011
Fixed-rate notes payable due through 2024	$	933.3		$	1,002.5
Variable-rate notes payable due through 2023	207.2			304.4
Long-term debt	1,140.5			1,306.9
Less current portion	183.4			207.9
	$	957.1		$	1,099.0
Weighted-average fixed-interest rate	5.9		%	5.8		%
Weighted-average variable-interest rate	2.0		%	1.9		%

All of the Company’s borrowings were secured by aircraft, but only one aircraft debt agreement secured by an aircraft has a loan-to-value covenant. As of June 30, 2012, the Company was in compliance with this covenant and expects to retire this debt by December 31, 2012.

During the six months ended June 30, 2012, the Company made scheduled debt payments of $62.9 million and prepaid the full debt balance on seven outstanding aircraft debt agreements of $102.5 million.

At June 30, 2012, long-term debt principal payments for the next five years and thereafter are as follows (in millions):

	Total
Remainder of 2012	$	108.6
2013	160.9
2014	117.1
2015	113.4
2016	110.6
Thereafter	529.9
Total principal payments	$	1,140.5

Bank Line of Credit

The Company has two $100 million credit facilities. Both facilities have variable interest rates based on LIBOR plus a specified margin. Borrowings on one of the $100 million facilities, which expires in March 2013, are secured by aircraft. Borrowings on the other $100 million facility, which expires in March 2016, are secured by certain accounts receivable, spare engines, spare parts and ground service equipment. The Company has no immediate plans to borrow using either of these facilities. These facilities have a requirement to maintain a minimum unrestricted cash and marketable securities balance of $500 million. The Company is in compliance with this covenant at June 30, 2012.

NOTE 8. INCOME TAXES

Deferred income taxes reflect the impact of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and such amounts for tax purposes. Primarily due to differences in depreciation rates for federal income tax purposes and for financial reporting purposes, the Company has generated a net deferred tax liability. As a result of certain realization requirements of ASC 718, Compensation - Stock Compensation, deferred assets and liabilities do not include certain deferred tax assets that arose directly from the tax deductions related to equity compensation in excess of compensation recognized for financial reporting. Those deferred tax assets include $4.9 million and $10.3 million of loss carryforwards at June 30, 2012 and December 31, 2011, respectively, in which additional-paid-in-capital will be increased if and when such deferred tax assets are ultimately realized. The Company uses ASC 740 ordering for purposes of determining when excess tax benefits have been realized. During the second quarter of 2012, the Company recognized $9.7 million of previously unrecognized deferred tax assets related to the excess tax benefits of stock compensation, which decreased "Deferred income taxes" and increased "Capital in excess of par."

15

NOTE 9. EMPLOYEE BENEFIT PLANS

Net periodic benefit costs recognized included the following components for the three months ended June 30 (in millions): 

	Qualified						Nonqualified				Postretirement Medical
	2012			2011			2012		2011		2012			2011
Service cost	$	9.5		$	9.0		$	0.2	$	0.2	$	1.3		$	1.5
Interest cost	18.3			18.3			0.5		0.5		1.3			1.8
Expected return on assets	(23.2		)	(22.1		)	—		—		—			—
Amortization of prior service cost	(0.3		)	(0.2		)	—		—		0.2			0.1
Recognized actuarial loss	9.9			6.1			0.2		0.2		(0.2		)	0.3
Net periodic benefit costs	$	14.2		$	11.1		$	0.9	$	0.9	$	2.6		$	3.7

Net periodic benefit costs recognized included the following components for the six months ended June 30 (in millions): 

	Qualified						Nonqualified				Postretirement Medical
	2012			2011			2012		2011		2012			2011
Service cost	$	19.1		$	18.0		$	0.4	$	0.4	$	2.5		$	3.0
Interest cost	36.5			36.6			1.0		1.1		2.7			3.6
Expected return on assets	(46.5		)	(44.2		)	—		—		—			—
Amortization of prior service cost	(0.5		)	(0.4		)	—		—		0.3			0.2
Recognized actuarial loss	19.8			12.2			0.4		0.3		(0.3		)	0.6
Net periodic benefit costs	$	28.4		$	22.2		$	1.8	$	1.8	$	5.2		$	7.4

NOTE 10. COMMITMENTS

Future minimum fixed payments for commitments (in millions):

June 30, 2012	Aircraft Leases		Facility Leases		Aircraft Commitments		Capacity Purchase Agreements		Engine Maintenance
Remainder of 2012	$	41.8	$	31.8	$	181.8	$	9.7	$	20.9
2013	141.6		42.5		333.2		17.4		31.9
2014	126.1		38.5		194.6		17.7		26.4
2015	104.4		27.0		48.0		18.0		10.1
2016	81.9		17.2		18.4		18.3		—
Thereafter	130.7		137.9		36.8		26.5		—
Total	$	626.5	$	294.9	$	812.8	$	107.6	$	89.3

Lease Commitments

The Company had lease contracts for 63 aircraft, which have remaining noncancelable lease terms ranging up to nine years at June 30, 2012. Of these aircraft, 14 are non-operating (i.e. not in our fleet) and subleased to third-party carriers. In May 2012, the Company entered into an agreement to sell and leaseback three Boeing 737-700 aircraft. The lease terms are less than two years and qualify as operating leases. The sale of the aircraft resulted in a gain of $3.2 million, which was deferred and will be amortized over the life of the leases to aircraft rent expense on the consolidated statement of operations. The majority of airport and terminal facilities are also leased. Rent expense was $67.9 million and $69.4 million for the three months ended June 30, 2012 and 2011, respectively, and $137.9 million and $138.5 million for the six months ended June 30, 2012 and 2011, respectively.

16

Aircraft Commitments

As of June 30, 2012, the Company is committed to purchasing three Boeing 737-800 aircraft and 22 Boeing 737-900ER aircraft, with deliveries in 2012 through 2015, and has options to purchase an additional 39 Boeing 737 aircraft. The Company also purchased one Boeing 737-800 and two Q400 aircraft in the second quarter of 2012. The Company is committed to selling two Q400 aircraft in 2012, and has options to purchase an additional 10 Q400 aircraft.

Capacity Purchase Agreements (CPAs)

At June 30, 2012, Alaska had CPAs with three carriers, including our wholly-owned subsidiary, Horizon. Horizon sells 100% of its capacity to Alaska under a CPA, which is eliminated upon consolidation. On May 14, 2011, SkyWest Airlines, Inc. (SkyWest) began flying certain routes under a CPA with Alaska. In addition, Alaska has a CPA with Peninsula Airways, Inc. (PenAir) to fly in the state of Alaska. Under these agreements, Alaska pays the third-party carriers an amount which is based on a determination of their cost of operating those flights and other factors. The costs paid by Alaska to Horizon are based on similar data and are intended to approximate market rates for those services. Future payments (excluding Horizon) are based on minimum levels of flying by the third-party carriers, which could differ materially due to variable payments based on actual levels of flying and certain costs associated with operating flights such as fuel.

Engine Maintenance

The Company had power-by-the-hour maintenance agreements for all Boeing 737 engines other than the Boeing 737-800 at June 30, 2012. These agreements transfer risk to third-party service providers and fix the amount the Company pays per flight hour in exchange for maintenance and repairs under a predefined maintenance program. Future payments are based on minimum flight hours. Accordingly, payments could differ materially based on actual flight hours.

NOTE 11. SHAREHOLDERS' EQUITY

Common Stock Split

On February 15, 2012, the Board of Directors declared a two-for-one split of the Company's common stock to be accomplished by means of a stock distribution. The additional shares were distributed on March 16, 2012, to the shareholders of record on March 2, 2012. The stock split increased the Company's outstanding shares from approximately 35.5 million shares as of December 31, 2011 to 70.7 million shares as of June 30, 2012. Historical outstanding shares were recast upon the distribution.

Common Stock Repurchase

In February 2012, the Board of Directors authorized a $50 million share repurchase program, which expires in February 2013. In June 2011, the Board of Directors authorized a $50 million share repurchase program, which was completed in January 2012. In June 2010, the Board of Directors authorized a $50 million share repurchase program, which was completed in April 2011.

Share repurchase activity (in millions, except share amounts):

	Three Months Ended June 30,						Six Months Ended June 30,
	2012			2011			2012			2011
	Shares	Amount		Shares	Amount		Shares	Amount		Shares	Amount
2012 Repurchase Program	506,000	$	17.5	—	$	—	709,000	$	24.6	—	$	—
2011 Repurchase Program	—	—		63,000	2.1		46,340	1.7		63,000	2.1
2010 Repurchase Program	—	—		155,600	4.9		—	—		1,023,600	31.2
	506,000	$	17.5	218,600	$	7.0	755,340	$	26.3	1,086,600	$	33.3

Retirement of Treasury Shares

In February 2012, the Company retired 4,829,834 common shares that had been held in treasury.  This action did not impact the total number of common shares outstanding.

17

Earnings Per Share

Diluted EPS is calculated by dividing net income by the average common shares outstanding plus additional common shares that would have been outstanding assuming the exercise of in-the-money stock options and restricted stock units, using the treasury-stock method. For the three months ended June 30, 2012 and 2011, 0.2 million and 0.1 million stock options, respectively, were excluded from the calculation of diluted EPS because they were antidilutive. Antidilutive shares for the six month ended June 30, 2012 and 2011 were 0.2 million and 0.2 million, respectively.

NOTE 12. FLEET TRANSITION EXPENSES

Fleet transition expenses included in the consolidated statements of operations (in millions):

	Three Months Ended June 30,				Six Months Ended June 30,
	2012		2011		2012		2011
Horizon Fleet Transition - CRJ-700	$	—	$	20.8	$	—	$	30.9
Horizon Fleet Transition - Q200	—		6.0		—		6.0
Total	$	—	$	26.8	$	—	$	36.9

In 2011, Horizon completed its transition to an all-Q400 fleet. During the first six months of 2011, Horizon subleased the final 13 CRJ-700 aircraft to a third-party carrier.

Horizon also had 16 Q200 aircraft subleased to a third-party carrier, which included a liability related to the estimated sublease loss which had been recorded in previous periods. The Company evaluated the loss in the second quarter of 2011 and determined the ultimate loss would likely be higher than the original estimate and recorded an additional charge.

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NOTE 13. OPERATING SEGMENT INFORMATION

Management views the business in three operating segments.

Alaska Mainline - The Boeing 737 part of Alaska's business with average stage lengths greater than 1,000 miles.

Alaska Regional - Alaska's shorter distance network. In this segment, we record actual on-board passenger revenue, less costs such as fuel, distribution costs, and payments made to Horizon, SkyWest and PenAir under CPAs.

Horizon - Horizon operates regional aircraft. All of Horizon's capacity is sold to Alaska under a CPA.   Expenses include those typically borne by regional airlines such as crew costs, ownership costs, and maintenance costs.

The following table reports “Air Group adjusted,” which is not a measure determined in accordance with GAAP. The Company's chief operating decision-makers and others in management use this measure to evaluate operational performance and determine resource allocations. Adjustments are further explained below in reconciling to consolidated GAAP results. All inter-company revenues and expenses between Alaska and Horizon are eliminated in consolidation.

Operating segment information is as follows (in millions):

	Three Months Ended June 30, 2012
	Alaska
	Mainline			Regional		Horizon			Consolidating			Air Group Adjusted(a)			Special Items			Consolidated
Operating revenues
Passenger
Mainline	$	862.7		$	—	$	—		$	—		$	862.7		$	—		$	862.7
Regional	—			187.6		—			—			187.6			—			187.6
Total passenger revenues	862.7			187.6		—			—			1,050.3			—			1,050.3
CPA revenues	—			—		89.2			(89.2		)	—			—			—
Freight and mail	29.5			1.1		—			—			30.6			—			30.6
Other-net	115.4			15.1		1.8			—			132.3			—			132.3
Total operating revenues	1,007.6			203.8		91.0			(89.2		)	1,213.2			—			1,213.2
Operating expenses
Operating expenses, excluding fuel	532.2			139.0		83.1			(88.7		)	665.6			—			665.6
Economic fuel(c)	316.7			45.5		—			—			362.2			69.6			431.8
Total operating expenses	848.9			184.5		83.1			(88.7		)	1,027.8			69.6			1,097.4
Nonoperating income (expense)
Interest income	4.4			—		—			0.7			5.1			—			5.1
Interest expense	(12.7		)	—		(4.1		)	(0.4		)	(17.2		)	—			(17.2		)
Other	5.1			—		0.4			(0.1		)	5.4			—			5.4
	(3.2		)	—		(3.7		)	0.2			(6.7		)	—			(6.7		)
Income (loss) before income tax	$	155.5		$	19.3	$	4.2		$	(0.3	)	$	178.7		$	(69.6	)	$	109.1

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	Three Months Ended June 30, 2011
	Alaska
	Mainline			Regional		Horizon			Consolidating			Air Group Adjusted(a)			Special Items			Consolidated
Operating revenues
Passenger
Mainline	$	774.2		$	—	$	—		$	—		$	774.2		$	—		$	774.2
Regional	—			179.0		—			—			179.0			—			179.0
Total passenger revenues	774.2			179.0		—			—			953.2			—			953.2
CPA revenues	—			—		93.5			(93.5		)	—			—			—
Freight and mail	28.0			1.0		0.1			—			29.1			—			29.1
Other-net	110.7			15.4		1.8			—			127.9			—			127.9
Total operating revenues	912.9			195.4		95.4			(93.5		)	1,110.2			—			1,110.2
Operating expenses
Operating expenses, excluding fuel(b)	498.4			138.1		83.8			(92.2		)	628.1			26.8			654.9
Economic fuel(c)	285.2			41.4		—			—			326.6			70.9			397.5
Total operating expenses	783.6			179.5		83.8			(92.2		)	954.7			97.7			1,052.4
Nonoperating income (expense)
Interest income	7.1			—		—			(0.8		)	6.3			—			6.3
Interest expense	(16.3		)	—		(4.4		)	0.7			(20.0		)	—			(20.0		)
Other	2.3			—		0.2			0.4			2.9			—			2.9
	(6.9		)	—		(4.2		)	0.3			(10.8		)	—			(10.8		)
Income (loss) before income tax	$	122.4		$	15.9	$	7.4		$	(1.0	)	$	144.7		$	(97.7	)	$	47.0

	Six Months Ended June 30, 2012
	Alaska
	Mainline			Regional		Horizon			Consolidating			Air Group Adjusted(a)			Special Items			Consolidated
Operating revenues
Passenger
Mainline	$	1,586.1		$	—	$	—		$	—		$	1,586.1		$	—		$	1,586.1
Regional	—			360.4		—			—			360.4			—			360.4
Total passenger revenues	1,586.1			360.4		—			—			1,946.5			—			1,946.5
CPA revenues	—			—		176.2			(176.2		)	—			—			—
Freight and mail	53.0			2.0		—			—			55.0			—			55.0
Other-net	218.2			29.1		3.7			—			251.0			—			251.0
Total operating revenues	1,857.3			391.5		179.9			(176.2		)	2,252.5			—			2,252.5
Operating expenses
Operating expenses, excluding fuel	1,051.8			275.8		161.4			(175.3		)	1,313.7			—			1,313.7
Economic fuel(c)	611.1			89.8		—			—			700.9			49.7			750.6
Total operating expenses	1,662.9			365.6		161.4			(175.3		)	2,014.6			49.7			2,064.3
Nonoperating income (expense)
Interest income	9.3			—		—			0.7			10.0			—			10.0
Interest expense	(25.3		)	—		(8.1		)	(0.4		)	(33.8		)	—			(33.8		)
Other	10.4			—		0.8			0.1			11.3			—			11.3
	(5.6		)	—		(7.3		)	0.4			(12.5		)	—			(12.5		)
Income (loss) before income tax	$	188.8		$	25.9	$	11.2		$	(0.5	)	$	225.4		$	(49.7	)	$	175.7

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	Six Months Ended June 30, 2011
	Alaska
	Mainline			Regional		Horizon			Consolidating			Air Group Adjusted(a)			Special Items			Consolidated
Operating revenues
Passenger
Mainline	$	1,433.5		$	—	$	—		$	—		$	1,433.5		$	—		$	1,433.5
Regional	—			340.6		—			—			340.6			—			340.6
Total passenger revenues	1,433.5			340.6		—			—			1,774.1			—			1,774.1
CPA revenues	—			—		188.1			(188.1		)	—			—			—
Freight and mail	51.9			2.0		0.1			—			54.0			—			54.0
Other-net	212.7			30.4		4.2			—			247.3			—			247.3
Total operating revenues	1,698.1			373.0		192.4			(188.1		)	2,075.4			—			2,075.4
Operating expenses
Operating expenses, excluding fuel(b)	996.1			271.0		174.0			(186.2		)	1,254.9			36.9			1,291.8
Economic fuel(c)	523.6			79.5		—			—			603.1			(11.1		)	592.0
Total operating expenses	1,519.7			350.5		174.0			(186.2		)	1,858.0			25.8			1,883.8
Nonoperating income (expense)
Interest income	15.8			—		—			(1.9		)	13.9			—			13.9
Interest expense	(36.0		)	—		(9.1		)	1.7			(43.4		)	—			(43.4		)
Other	4.4			—		1.0			0.2			5.6			—			5.6
	(15.8		)	—		(8.1		)	—			(23.9		)	—			(23.9		)
Income (loss) before income tax	$	162.6		$	22.5	$	10.3		$	(1.9	)	$	193.5		$	(25.8	)	$	167.7

^(a)  The adjusted column represents the financial information that is reviewed by management to assess performance of operations and determine capital allocations and does not include certain charges.

^(b)  Refer to Note 12 for a summary of special charges.

^(c)  Represents adjustments to reflect the timing of gain or loss recognition resulting from mark-to-market fuel-hedge accounting.

Total assets were as follows (in millions):

	June 30, 2012			December 31, 2011
Alaska(a)	$	4,994.9		$	4,803.3
Horizon	864.1			846.5
Parent company	1,589.4			1,583.5
Elimination of inter-company accounts	(2,024.8		)	(2,038.3		)
Consolidated	$	5,423.6		$	5,195.0

^(a)  There are no assets associated with purchased capacity flying at Alaska.

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ITEM 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

OVERVIEW

The following Management’s Discussion and Analysis of Financial Condition and Results of Operations (MD&A) is intended to help the reader understand the Company, our operations and our present business environment. MD&A is provided as a supplement to – and should be read in conjunction with – our consolidated financial statements and the accompanying notes. All statements in the following discussion that are not statements of historical information or descriptions of current accounting policy are forward-looking statements. Please consider our forward-looking statements in light of the risks referred to in this report’s introductory cautionary note and the risks mentioned in Item 1A "Risk Factors” of our Annual Report on Form 10-K for the year ended December 31, 2011. This overview summarizes the MD&A, which includes the following sections:

• Second Quarter in Review—highlights from the second quarter of 2012 outlining some of the major events that happened during the period and how they affected our financial performance.

• Results of Operations—an in-depth analysis of the results of our operations for the three and six months ended June 30, 2012. We believe this analysis will help the reader better understand our consolidated statements of operations. Financial and statistical data is also included here. This section includes forward-looking statements regarding our view of the remainder of 2012. 

• Liquidity and Capital Resources—an analysis of cash flows, sources and uses of cash, contractual obligations, commitments, and an overview of financial position.

SECOND QUARTER REVIEW

Our consolidated pretax income was $109.1 million during the second quarter of 2012, compared to $47.0 million in the second quarter of 2011. The increase of $62.1 million was primarily due to the $103.0 million improvement in revenues, partially offset by the $34.3 million increase in aircraft fuel expense and $10.7 million increase in other operating expenses, including the $26.8 million charge in the second quarter of 2011 related to our transition to an all Q400 regional fleet. Our improvement in revenues was primarily due to a 6.3% increase in capacity and a 2.8% increase in revenue per available seat mile (RASM). The increase in fuel cost was driven by a 6.7% increase in consumption and a $27.0 million increase in the net impact of our fuel-hedging portfolio, partially offset by a 4.4% decline in the raw fuel cost per gallon.

See “Results of Operations” below for further discussion of changes in revenues and operating expenses and our reconciliation of Non-GAAP measures to the most directly comparable GAAP measure.

Ancillary Revenue Reclassification

We have historically reported many ancillary revenues, such as checked-bag fees, ticket change fees, and others, within Passenger Revenue in our consolidated statement of operations. We have, however, analyzed the SEC filings of our competitors and decided to include ancillary revenues in Other-net Revenue in the consolidated statement of operations so that our passenger revenues, passenger revenue per available seat mile (PRASM), and yield are comparable to others in our industry and to help facilitate better analysis among our peers. We have reclassified ancillary revenues in all prior periods, with the reclassification having no impact on total revenue for any of the respective periods.

Operations Performance

During the second quarter of 2012, we reported a record second quarter mainline load factor of 87.4%, and a consolidated load factor of 86.5%. Horizon reported second quarter 2012 load factor of 77.3%, consistent with the second quarter of 2011 load factor of 77.3% on a decrease in capacity of 4.5%.

Mainline on-time performance of 90.2% for the second quarter of 2012 helped Alaska to rank first among the 10 largest U.S. airlines for the twelve months ending in May. Additionally, Horizon significantly improved its operational performance from the prior-year period, reporting 93.9% of its flights arrived on-time during the second quarter of 2012, up substantially from 87.1%. In each month of the quarter, Horizon ranked first in on-time performance among all U.S. carriers according to FlightStats.com.

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During the second quarter of 2012, as part of our 2012 key initiative focusing on the customer travel experience, we launched a mobile website where customers can check-in, pay for bags and get an electronic boarding pass. Customers can also self-tag their checked bags at Seattle-Tacoma International Airport and in new locations added during the year, reducing their check-in time by up to 30%. Additionally, we have flown 1,894 flights to-date using Required Navigation Performance (RNP) technology under our Greener Skies program, where we feel we are the industry leader in environmental stewardship.

Additionally, we won our fifth consecutive J.D. Power and Associates^TM award naming us "Highest in Customer Satisfaction among Traditional Network Carriers". We believe our exceptional operational reliability, use of technology to make flying more hassle-free and improvements to our on-board experience all contributed to this award.

Update on Labor Negotiations

Our ramp and stores agents, represented by the International Association of Machinists, ratified a six-year contract by a 91% margin before the amendable date. The contract provides for an initial wage increase of 2.5% followed by 1.5% annual increases over the six-year term, and contains important productivity improvements. It also offers both the Company and our employees the certainty that comes with a long-term deal. We are currently in negotiations with Alaska's and Horizon's Association of Flight Attendants (AFA) unions.

New Markets

In the second quarter of 2012, we began service in 10 new markets with more new service scheduled to start in the second half of 2012 as follows:

New Non-Stop Routes (Launch Date)
Seattle to Fort Lauderdale (7/16)	Portland to Lihue (11/5)
Portland to Washington, D.C. (8/28)	Bellingham to Kahului (11/8)
Seattle to San Antonio (9/17)	Anchorage to Kona (11/10)
San Diego to Orlando (10/11)

Stock Repurchase

During the second quarter of 2012, we repurchased 506,000 shares of our common stock for $17.5 million under the $50 million repurchase plans authorized by our Board of Directors in February 2012.

Outlook

As we look into the second half of 2012, despite the uncertain macro economic environment, we are still seeing solid demand for air travel. Our advance bookings suggest our load factors will be flat in August and down half a point in September compared to the same periods in 2011 on an expected 6.5% increase in capacity for the third quarter of 2012. Our July load factor was up half a point, compared to July 2011, at 88.3%.

For the full year, we are expecting our non-fuel unit costs to be flat compared to the prior year. This is primarily due to increases in our projected incentive pay.

In July, the Port of Seattle Commission (Port) gave final design authorization for an estimated $230 million renovation of the North Satellite at Seattle-Tacoma International Airport to better serve passengers. The project will include modernizing facilities, seismic upgrades, enhanced traveler amenities, three new gates and a new roof-top lounge. We will be the sole tenant in the North Satellite and believe the enhancements will increase our operational efficiencies and reduce our overall costs. The Port will be contributing substantially all of the costs of the project and will be managing the project, which is different than our involvement with Terminal 6 at LAX.

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RESULTSOF OPERATIONS

COMPARISON OF THREE MONTHS ENDED JUNE 30, 2012 COMPARED TO THREE MONTHS ENDED JUNE 30, 2011

Our consolidated net income for the second quarter of 2012 was $67.5 million, or $0.93 per diluted share, compared to net income of $28.8 million, or $0.39 per diluted share, in the second quarter of 2011. Significant items impacting the comparability between the periods are as follows:

• Both periods include adjustments to reflect the timing of net unrealized mark-to-market losses related to our fuel hedge positions. For the second quarter of 2012, we recognized net mark-to-market losses of $69.6 million ($43.3 million after tax, or $0.60 per share) compared to losses of $70.9 million ($44.1 million after tax, or $0.60 per share) in the second quarter of 2011.

• In the second quarter of 2011, we incurred $26.8 million ($16.7 million after tax, or $0.23 per share) in expense as part of Horizon's fleet transition out of the CRJ-700 aircraft.

ADJUSTED (NON-GAAP) RESULTS ANDPER-SHARE AMOUNTS

We believe disclosure of earnings excluding the impact of these individual charges is useful information to investors because:

• We believe it is the basis by which we are evaluated by industry analysts;

• Our results excluding these items are most often used in internal management and board reporting and decision-making;

• Our results excluding these adjustments serve as the basis for our various employee incentive plans, thus the information allows investors to better understand the changes in variable incentive pay expense in our consolidated statements of operations;

• It is useful to monitor performance without these items as it improves a reader’s ability to compare our results to those of other airlines; and

• It is consistent with how we present information in our quarterly earnings press releases.

Although we are presenting these non-GAAP amounts for the reasons above, investors and other readers should not necessarily conclude that these amounts are non-recurring, infrequent, or unusual in nature.

Excluding the impact of mark-to-market fuel hedge adjustments and fleet transition costs in 2011, our adjusted consolidated net income for the second quarter of 2012 was $110.8 million, or $1.53 per diluted share, compared to an adjusted consolidated net income of $89.6 million, or $1.22 per share, in the second quarter of 2011.

	Three Months Ended June 30,
	2012				2011
(in millions, except per share amounts)	Dollars		Diluted EPS		Dollars		Diluted EPS
Net income and diluted EPS as reported	$	67.5	$	0.93	$	28.8	$	0.39
Fleet transition costs, net of tax	—		—		16.7		0.23
Mark-to-market fuel hedge adjustments, net of tax	43.3		0.60		44.1		0.60
Non-GAAP adjusted income and per share amounts	$	110.8	$	1.53	$	89.6	$	1.22

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OPERATING STATISTICS SUMMARY (unaudited)

Alaska Air Group, Inc.

Below are operating statistics we use to measure operating performance. We often refer to unit revenues and adjusted unit costs, which is a non-GAAP measure.

	Three Months Ended June 30,								Six Months Ended June 30,
	2012			2011			Change		2012			2011			Change
Consolidated Operating Statistics:(a)
Revenue passengers (000)	6,565			6,246			5.1	%	12,560			11,998			4.7	%
Revenue passenger miles (RPM) (000,000) "traffic"	6,869			6,293			9.2	%	13,101			12,146			7.9	%
Available seat miles (ASM) (000,000) "capacity"	7,939			7,469			6.3	%	15,283			14,581			4.8	%
Load factor	86.5		%	84.3		%	2.2 pts		85.7		%	83.3		%	2.4 pts
Yield		15.29	¢		15.15	¢	0.9	%		14.86	¢		14.61	¢	1.7	%
Passenger revenue per ASM (PRASM)		13.23	¢		12.76	¢	3.7	%		12.74	¢		12.17	¢	4.7	%
Revenue per ASM (RASM)		15.28	¢		14.86	¢	2.8	%		14.74	¢		14.23	¢	3.6	%
Operating expense per ASM (CASM) excluding fuel and fleet transition costs(b)		8.38	¢		8.41	¢	(0.4	)%		8.60	¢		8.61	¢	(0.1	)%
Economic fuel cost per gallon(b)	$	3.40		$	3.28		3.7	%	$	3.41		$	3.08		10.7	%
Fuel gallons (000,000)	106.4			99.7			6.7	%	205.8			196.0			5.0	%
Average number of full-time equivalent employees (FTE)	11,965			11,807			1.3	%	11,899			11,846			0.4	%
Mainline Operating Statistics:
Revenue passengers (000)	4,752			4,533			4.8	%	9,027			8,640			4.5	%
RPMs (000,000) "traffic"	6,231			5,697			9.4	%	11,868			10,976			8.1	%
ASMs (000,000) "capacity"	7,130			6,702			6.4	%	13,705			13,055			5.0	%
Load factor	87.4		%	85.0		%	2.4 pts		86.6		%	84.1		%	2.5 pts
Yield		13.85	¢		13.59	¢	1.9	%		13.36	¢		13.06	¢	2.3	%
PRASM		12.10	¢		11.55	¢	4.8	%		11.57	¢		10.98	¢	5.4	%
RASM		14.13	¢		13.62	¢	3.7	%		13.55	¢		13.01	¢	4.2	%
CASM excluding fuel(b)		7.46	¢		7.44	¢	0.3	%		7.67	¢		7.63	¢	0.5	%
Economic fuel cost per gallon(b)	$	3.40		$	3.27		4.0	%	$	3.40		$	3.07		10.7	%
Fuel gallons (000,000)	93.2			87.1			7.0	%	179.7			170.2			5.6	%
Average number of full-time equivalent employees	9,165			8,899			3.0	%	9,088			8,892			2.2	%
Aircraft utilization	10.9			10.5			3.8	%	10.6			10.5			1.0	%
Average aircraft stage length	1,149			1,104			4.1	%	1,151			1,111			3.6	%
Mainline operating fleet at period-end	120			117			3 a/c		120			117			3 a/c
Regional Operating Statistics:(c)
Revenue passengers (000)	1,813			1,713			5.8	%	3,533			3,358			5.2	%
RPMs (000,000) "traffic"	638			596			7.0	%	1,233			1,170			5.4	%
ASMs (000,000) "capacity"	809			767			5.5	%	1,578			1,526			3.4	%
Load factor	78.9		%	77.7		%	1.2 pts		78.1		%	76.7		%	1.4 pts
Yield		29.40	¢		30.03	¢	(2.1	)%		29.23	¢		29.11	¢	0.4	%
PRASM		23.19	¢		23.34	¢	(0.6	)%		22.84	¢		22.32	¢	2.3	%

^(a)  Except for FTEs, data includes information related to regional CPA flying with Horizon, SkyWest and PenAir.

^(b)  See reconciliation of this measure to the most directly related GAAP measure in the "Results of Operations" section.

^(c)  Data presented includes information related to regional CPAs.

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OPERATING REVENUES

Total operating revenues increased $103.0 million, or 9.3%, during the second quarter of 2012 compared to the same period in 2011.  The changes are summarized in the following table:

	Three Months Ended June 30,
(in millions)	2012		2011		% Change
Passenger
Mainline	$	862.7	$	774.2	11.4
Regional	187.6		179.0		4.8
Total passenger revenue	1,050.3		953.2		10.2
Freight and mail	30.6		29.1		5.2
Other - net	132.3		127.9		3.4
Total operating revenues	$	1,213.2	$	1,110.2	9.3

Passenger Revenue – Mainline

Mainline passenger revenue for the second quarter of 2012 improved by 11.4% on a 6.4% increase in capacity and a 4.8% increase in PRASM compared to 2011. The increase in capacity is driven by new routes added in the second half of 2011 and to a lesser extent new routes in 2012, most of which were to and from Hawaii. The increase in PRASM was driven by a 1.9% rise in ticket yield and a 2.4-points increase in load factor compared to the prior-year quarter. The increase in yield is due to strong demand.

Passenger Revenue – Regional

Regional passenger revenue increased by $8.6 million, or 4.8%, compared to the second quarter of 2011, due to an increase in load factor of 1.2-point on a 7.0% increase in traffic. Yields were negative due to increased competition in certain markets, increase in stage length, as well as lower introductory fares for new markets that we entered in the current year, bringing PRASM down by 0.6%. Additionally, in the second quarter of 2011, we transitioned out of the CRJ-700 fleet, which impacted capacity and stage lengths.

Freight and Mail

Freight and mail revenue increased $1.5 million, or 5.2%, primarily due to increased freight volumes associated with new markets.

Other – Net

Other—net revenue increased $4.4 million, or 3.4%, from the second quarter of 2011.  The increase is primarily due to Mileage Plan revenues rising 7% and buy-on-board revenues improving 23%, partially offset by a 6% decrease in baggage fees. The decrease in bag fees is due to our Club 49 program that was launched in the fourth quarter of 2011 and due to changing customer behavior with respect to checking bags.

OPERATING EXPENSES

Total operating expenses increased $45.0 million, or 4.3%, compared to the second quarter of 2011 mostly as a result of higher fuel costs. We believe it is useful to summarize operating expenses as follows, which is consistent with the way expenses are reported internally and evaluated by management:

	Three Months Ended June 30,
(in millions)	2012		2011		% Change
Fuel expense	$	431.8	$	397.5	8.6
Non-fuel expenses	665.6		654.9		1.6
Total Operating Expenses	$	1,097.4	$	1,052.4	4.3

Significant operating expense variances from the second quarter of 2011 are more fully described below.

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Wages and Benefits

Wages and benefits increased during the second quarter of 2012 by $16.1 million, or 6.6%, compared to 2011.  The primary components of wages and benefits are shown in the following table:

	Three Months Ended June 30,
(in millions)	2012		2011		% Change
Wages	$	179.4	$	172.7	3.9
Pension and defined-contribution retirement benefits	25.8		22.6		14.2
Medical benefits	27.8		26.4		5.3
Other benefits and payroll taxes	25.9		21.1		22.7
Total wages and benefits	$	258.9	$	242.8	6.6

Wages increased 3.9% on a 1.3% increase in FTEs related to more flying and due to higher wage rates throughout our different employee groups that have wage step increases in the contracts. The contracts with the different employee groups contain important productivity improvements, which resulted in a 3.7% increase in the number of passengers per FTE that were handled in the second quarter compared to 2011.

The 14.2% increase in pension and other retirement-related benefits is directly due to a lower return on our plan assets in the prior year and an increased actuarial loss on our projected benefit obligation.

Medical benefits increased 5.3% from the prior-year quarter primarily due an increase in employee health-care claims, partially offset by a decline in post-retirement medical expense.

Other benefits and payroll taxes increased 22.7% in the second quarter of 2012 compared to the same period in the prior year primarily due to increased worker's compensation expense of $3.0 million resulting from higher loss rates in more recent claim years, an increase in stock-based compensation expense of $0.7 million, and increased payroll taxes and fringe benefits in line with increased wages.

Variable Incentive Pay

Variable incentive pay expense increased from $17.9 million in the second quarter of 2011 to $21.5 million in the second quarter of 2012. The increase is due to higher than expected financial results, performance against operational and customer satisfaction goals, and forecast for the remainder of the year.

Aircraft Fuel

Aircraft fuel expense includes both raw fuel expense (as defined below) plus the effect of mark-to-market adjustments to our fuel hedge portfolio included in our consolidated statement of operations as the value of that portfolio increases and decreases. Our aircraft fuel expense is very volatile, even between quarters, because it includes these gains or losses in the value of the underlying instrument as crude oil prices and refining margins increase or decrease. Raw fuel expense is defined as the price that we generally pay at the airport, or the “into-plane” price, including taxes and fees. Raw fuel prices are impacted by world oil prices and refining costs, which can vary by region in the U.S.  Raw fuel expense approximates cash paid to suppliers and does not reflect the effect of our fuel hedges.

Aircraft fuel expense increased $34.3 million, or 8.6% compared to the second quarter of 2011. The elements of the change are illustrated in the following table: 

	Three Months Ended June 30,
(in millions, except per gallon amounts)	2012		2011		% Change
Fuel gallons consumed	106.4		99.7		6.7
Raw price per gallon	$	3.29	$	3.44	(4.4	)
Total raw fuel expense	$	350.4	$	343.1	2.1
Net impact to fuel expense from fuel-hedging activities	81.4		54.4		49.6
Aircraft fuel expense	$	431.8	$	397.5	8.6

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Fuel gallons consumed increased 6.7%, primarily as a result of more flying and higher load factors.

The raw fuel price per gallon decreased 4.4% as a result of lower West Coast jet fuel prices. West Coast jet fuel prices are impacted by both the price of crude oil, as well as refining margins associated with the conversion of crude oil to jet fuel. The average prices of crude oil and refining margins during the second quarter of 2012 were lower by approximately 9% and 3% respectively, as compared to the same period in 2011.

We also evaluate economic fuel expense, which we define as raw fuel expense adjusted for the cash we receive from, or pay to, hedge counterparties for hedges that settle during the period, and for the premium expense that we paid for those contracts. A key difference between aircraft fuel expense and economic fuel expense is the timing of gain or loss recognition on our hedge portfolio. When we refer to economic fuel expense, we include gains and losses only when they are realized for those contracts that were settled during the period based on their original contract terms.  We believe this is the best measure of the effect that fuel prices are currently having on our business because it most closely approximates the net cash outflow associated with purchasing fuel for our operations. Accordingly, many industry analysts evaluate our results using this measure, and it is the basis for most internal management reporting and incentive pay plans.

Our economic fuel expense is calculated as follows:

	Three Months Ended June 30,
(in millions, except per gallon amounts)	2012		2011			% Change
Raw fuel expense	$	350.4	$	343.1		2.1
(Gain) loss on settled hedges (net of cash settled) and premium expense recognized	11.8		(16.5		)	NM
Economic fuel expense	$	362.2	$	326.6		10.9
Fuel gallons consumed	106.4		99.7			6.7
Economic fuel cost per gallon	$	3.40	$	3.28		3.7

NM - Not Meaningful

As noted above, the total net expense recognized for hedges that settled during the second quarter was $11.8 million in 2012, compared to a benefit of $16.5 million in 2011.  These amounts represent the cash received net of the premium expense recognized for those hedges.

We currently expect our economic fuel price per gallon to be approximately 5% lower in the third quarter of 2012 compared to the third quarter of 2011, due to the recent decline in the cost of jet fuel. As both oil prices and refining margins are volatile, we are unable to forecast the full-year cost with any certainty.

Aircraft Maintenance

Aircraft maintenance increased by $5.4 million, or 11.0%, due to $3.9 million in additional engine events that occurred during the second quarter and increased component expense related to increased block hours compared to the prior-year quarter.

Aircraft Rent

Aircraft rent was flat compared to the prior-year quarter primarily due to slightly higher rent expense related to three B737-700 aircraft that were sold and leased back, offset by lower rent expense for aircraft that were extended.

Landing Fees and Other Rentals

Landing fees and other rentals increased $0.6 million, or 1.0%, compared to the second quarter of 2011 primarily due to flying to new locations in the past 12 months and increases in our landing fee rates, offset by the amortization of our construction obligation related to Terminal 6 at LAX.

Contracted Services

Contracted services increased $3.9 million, or 8.4%, primarily due to increased capacity purchased flying of $3.4 million related to SkyWest, which began in May 2011.

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Selling Expenses

Selling expenses decreased by $1.6 million, or 3.5%, compared to the second quarter of 2011 due to lower fees related to debit card purchases of $1.9 million and less promotional activity, offset by higher commissions due to higher levels of revenue.

Depreciation and Amortization

Depreciation and amortization increased $4.1 million, or 6.6%, compared to the second quarter of 2011.  This is primarily due to three B737-800 and two Q400 aircraft acquired since the second quarter of 2011, and placing Terminal 6 at LAX into service in March 2012.

Food and Beverage Service

Food and beverage costs increased $2.5 million, or 14.6%, from the prior-year quarter due to a 5.1% increase in the number of passengers, a 23.0% increase in sales of buy-on-board products, increased costs related to our premium wine program and serving Starbucks coffee, and additional costs associated with food delivery.

Other Operating Expenses

Other operating expenses increased $2.9 million, or 5.0%, compared to the second quarter of 2011.  The increase is primarily driven by IT and professional services costs of $2.4 million associated with our key initiatives and infrastructure improvements, and higher personnel non-wage costs such as hotels, meals and per diems of $1.9 million. These increases were offset by a reduction in property taxes from the prior year.

Fleet Transition and Restructuring Related Expenses

Fleet transition costs decreased $26.8 million, as we completed our transition to an all Q400 fleet at Horizon in the third quarter of 2011.

Operating Costs per Available Seat Mile (CASM)

Our operating costs per ASM are summarized below:

	Three Months Ended June 30,
	2012			2011			% Change
Consolidated:
CASM		13.82	¢		14.09	¢	(1.9	)
Less the following components:
Aircraft fuel, including hedging gains and losses	5.44			5.32			2.3
Fleet transition costs	—			0.36			NM
CASM excluding fuel and fleet transition costs		8.38	¢		8.41	¢	(0.4	)
	Three Months Ended June 30,
	2012			2011			% Change
Mainline:
CASM		12.60	¢		12.75	¢	(1.2	)
Less the following components:
Aircraft fuel, including hedging gains and losses	5.14			5.31			(3.2	)
CASM excluding fuel		7.46	¢		7.44	¢	0.3

NM - Not Meaningful

29

We have listed separately in the above table our fuel costs per ASM and our unit costs, excluding fuel and other noted items. These amounts are included in CASM, but for internal purposes we consistently use unit cost metrics that exclude fuel and certain special items to measure our cost-reduction progress. We believe that such analysis may be important to investors and other readers of these financial statements for the following reasons:

• By eliminating fuel expense and certain special items from our unit cost metrics, we believe that we have better visibility into the results of our non-fuel cost-reduction initiatives.  Our industry is highly competitive and is characterized by high fixed costs, so even a small reduction in non-fuel operating costs can result in a significant improvement in operating results.  In addition, we believe that all domestic carriers are similarly impacted by changes in jet fuel costs over the long run, so it is important for management (and thus investors) to understand the impact of (and trends in) company-specific cost drivers such as labor rates and productivity, airport costs, maintenance costs, etc., which are more controllable by management.

• CASM excluding fuel and certain special items is one of the most important measures used by management and by the Air Group Board of Directors in assessing quarterly and annual cost performance.

• CASM excluding fuel (and other items as specified in our plan documents) is an important metric for the employee incentive plan that covers all employees.

• CASM excluding fuel and certain special items is a measure commonly used by industry analysts, and we believe it is the basis by which they compare our airlines to others in the industry.  The measure is also the subject of frequent questions from investors.

• Disclosure of the individual impact of certain noted items provides investors the ability to measure and monitor performance both with and without these special items. We believe that disclosing the impact of certain items, such as fleet transition costs, is important because it provides information on significant items that are not necessarily indicative of future performance. Industry analysts and investors consistently measure our performance without these items for better comparability between periods and among other airlines.

• Although we disclose our passenger unit revenues, we do not (nor are we able to) evaluate unit revenues excluding the impact that changes in fuel costs have had on ticket prices.  Fuel expense represents a large percentage of our total operating expenses.  Fluctuations in fuel prices often drive changes in unit revenues in the mid-to-long term.  Although we believe it is useful to evaluate non-fuel unit costs for the reasons noted above, we would caution readers of these financial statements not to place undue reliance on unit costs excluding fuel as a measure or predictor of future profitability because of the significant impact of fuel costs on our business.

Our current expectations for capacity and CASM excluding fuel and special items are summarized below:

	Forecast Q3 2012	Change Y-O-Y	Forecast Full Year 2012	Change Y-O-Y
Consolidated:
ASMs (000,000) "capacity"	8,200 - 8,300	~ 6.5%	31,350 - 31,450	~ 6%
CASM excluding fuel and special items (cents)	8.20 - 8.30	0.5% - 1.5%	8.50 - 8.55	~ flat
	Forecast Q3 2012	Change Y-O-Y	Forecast Full Year 2012	Change Y-O-Y
Mainline:
ASMs (000,000) "capacity"	7,330 - 7,430	~ 6.5%	28,100 - 28,200	~ 6%
CASM excluding fuel (cents)	7.35 - 7.45	1% - 2.5%	7.60 - 7.65	~ 0.5%

CONSOLIDATED NONOPERATING INCOME (EXPENSE)

Net nonoperating expense was $6.7 million in the second quarter of 2012 compared to $10.8 million in the same period of 2011. The $4.1 million decrease is due to a lower average outstanding debt balance, additional capitalized interest due to higher levels of aircraft purchase deposits and capital expenditures, partially offset by lower investment returns in our marketable securities portfolio.

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CONSOLIDATED INCOME TAX EXPENSE

We provide for income taxes based on either our estimate of the effective tax rate for the full year or the actual year-to-date effective rate if it is our best estimate of our annual rate. Our effective income tax rate for the second quarter of 2012 of 38.1%, is consistent with our effective tax rate of 38.7% for the second quarter of 2011.

Our effective tax rate can vary significantly between quarters and for the full year, depending on the magnitude of non-deductible expenses in proportion to estimated pretax results.

COMPARISON OF SIX MONTHS ENDED JUNE 30, 2012 COMPARED TO SIX MONTHS ENDED JUNE 30, 2011

Our consolidated net income for the first six months of 2012 was $108.3 million, or $1.50 per diluted share, compared to net income of $103.0 million, or $1.40 per diluted share, in the first six months of 2011. Significant items impacting the comparability between the periods are as follows:

• Both periods include adjustments to reflect the timing of net unrealized mark-to-market gains related to our fuel hedge positions. For the first six months of 2012, we recognized net mark-to-market losses of $49.7 million ($30.8 million after tax, or $0.42 per share) compared to gains of $11.1 million ($6.9 million after tax, or $0.09 per share) in the first six months of 2011.

• In the first six months of 2011, we incurred $36.9 million ($22.9 million after tax, or $0.31 per share) in expense as part of Horizon's fleet transition out of the CRJ-700 and Q200 aircraft.

Excluding the impact of mark-to-market fuel hedge adjustments and fleet transition costs in 2011, our adjusted consolidated net income for the first six months of 2012 was $139.1 million, or $1.92 per diluted share, compared to an adjusted consolidated net income of $119.0 million, or $1.62 per share, in the first six months of 2011.

	Six Months Ended June 30,
	2012				2011
(in millions, except per share amounts)	Dollars		Diluted EPS		Dollars			Diluted EPS
Net income and diluted EPS as reported	$	108.3	$	1.50	$	103.0		$	1.40
Fleet transition costs, net of tax	—		—		22.9			0.31
Mark-to-market fuel hedge adjustments, net of tax	30.8		0.42		(6.9		)	(0.09		)
Non-GAAP adjusted income and per share amounts	$	139.1	$	1.92	$	119.0		$	1.62

OPERATING REVENUES

Total operating revenues increased $177.1 million, or 8.5%, during the first six months of 2012 compared to the same period in 2011.  The changes are summarized in the following table:

	Six Months Ended June 30,
(in millions)	2012		2011		% Change
Passenger
Mainline	$	1,586.1	$	1,433.5	10.6
Regional	360.4		340.6		5.8
Total passenger revenue	1,946.5		1,774.1		9.7
Freight and mail	55.0		54.0		1.9
Other - net	251.0		247.3		1.5
Total operating revenues	$	2,252.5	$	2,075.4	8.5

Passenger Revenue – Mainline

Mainline passenger revenue for the first six months of 2012 improved by 10.6% on a 5.0% increase in capacity and a 5.4% increase in PRASM compared to 2011. The increase in capacity is driven by new routes added in the last half of 2011, and to a lesser extent new routes in 2012, most of which were to and from Hawaii. The increase in PRASM was driven by a 2.3%

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improvement in ticket yield and a 2.5-point increase in load factor compared to the prior-year period. The increase in yield is due to strong demand throughout the period.

Passenger Revenue – Regional

Regional passenger revenue increased by $19.8 million, or 5.8%, compared to the first six months of 2011 on a 3.4% increase in capacity and a 2.3% increase in PRASM. The increase in PRASM was driven by a 0.4% improvement in ticket yield and a 1.4-point increase in load factor compared to the prior period.

Freight and Mail

Freight and mail revenue increased $1.0 million, or 1.9%, primarily due to increased freight volumes associated with new markets, which offset a decrease in mail volumes.

Other – Net

Other—net revenue increased $3.7 million, or 1.5%, from the first six months of 2011.  The increase is primarily due to Mileage Plan revenues rising 6% and buy on board products increasing 23%, offset by a decrease in bag fees of 6%. The decrease in bag fees is primarily due to our Club 49 program that was launched in the fourth quarter of 2011, and due to changing customer behavior with respect to checking bags.

OPERATING EXPENSES

Total operating expenses increased $180.5 million, or 9.6%, compared to the first six months of 2011 mostly as a result of higher fuel costs. We believe it is useful to summarize operating expenses as follows, which is consistent with the way expenses are reported internally and evaluated by management:

	Six Months Ended June 30,
(in millions)	2012		2011		% Change
Fuel expense	$	750.6	$	592.0	26.8
Non-fuel expenses	1,313.7		1,291.8		1.7
Total Operating Expenses	$	2,064.3	$	1,883.8	9.6

Significant operating expense variances from 2011 are more fully described below.

Wages and Benefits

Wages and benefits increased during the first six months of 2012 by $23.4 million, or 4.8%, compared to 2011.  The primary components of wages and benefits are shown in the following table:

	Six Months Ended June 30,
(in millions)	2012		2011		% Change
Wages	$	358.8	$	349.3	2.7
Pension and defined-contribution retirement benefits	51.6		45.2		14.2
Medical benefits	52.9		52.3		1.1
Other benefits and payroll taxes	52.2		45.3		15.2
Total wages and benefits	$	515.5	$	492.1	4.8

Wages increased 2.7% on a 0.4% increase in FTEs due to higher wage rates throughout our different employee groups that have wage step increases in the contracts. The contracts with the different employee groups contain important productivity improvements, which resulted in a 4.2% increase in the number of passengers per FTE that were handled in the first half of 2012 compared to 2011.

The 14.2% increase in pension and other retirement-related benefits is directly due to a lower return on our plan assets in the prior year and an increased actuarial loss on our projected benefit obligation. We expect our annual pension cost for 2012 to be approximately $57.0 million compared to $42.2 million for all of 2011.

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Medical benefits increased 1.1% from the prior-year period primarily due to an increase in employee health-care claims, partially offset by a decline in post-retirement medical expense.

Other benefits and payroll taxes increased 15.2% in the first six months of 2012 compared to the same period in the prior year primarily due to increased worker's compensation expense of $3.2 million, stock-based compensation expense of $2.0 million, and increased payroll taxes and fringe benefits in line with increased wages.

Variable Incentive Pay

Variable incentive pay expense increased from $34.3 million in the first six months of 2011 to $37.5 million in the first six months of 2012, or 9.3%. The increase is due to our people exceeding goals in safety and customer satisfaction and full year profit projecting to be better than plan. For the full year 2012, we currently expect incentive pay to be approximately $90 million compared to the $71.9 million recorded in 2011, but actual amounts could differ materially based on actual performance.

Aircraft Fuel

Aircraft fuel expense increased $158.6 million, or 26.8% compared to the first six months of 2011. The elements of the change are illustrated in the following table: 

	Six Months Ended June 30,
(in millions, except per gallon amounts)	2012		2011			% Change
Fuel gallons consumed	205.8		196.0			5.0
Raw price per gallon	$	3.34	$	3.23		3.4
Total raw fuel expense	$	687.7	$	632.1		8.8
Net impact to fuel expense from fuel-hedging activities	62.9		(40.1		)	NM
Aircraft fuel expense	$	750.6	$	592.0		26.8

NM - Not Meaningful

Fuel gallons consumed increased 5.0%, primarily as a result of more flying and higher load factors.

The raw fuel price per gallon increased 3.4% as a result of higher West Coast jet fuel prices. West Coast jet fuel prices are impacted by both the price of crude oil, as well as refining margins associated with the conversion of crude oil to jet fuel.

Our economic fuel expense is calculated as follows:

	Six Months Ended June 30,
(in millions, except per gallon amounts)	2012		2011			% Change
Raw fuel expense	$	687.7	$	632.1		8.8
(Gain) loss on settled hedges (net of cash settled) and premium expense recognized	13.2		(29.0		)	NM
Economic fuel expense	$	700.9	$	603.1		16.2
Fuel gallons consumed	205.8		196.0			5.0
Economic fuel cost per gallon	$	3.41	$	3.08		10.7

NM - Not Meaningful

As noted above, the total net expense recognized for hedges that settled during the first six months was $13.2 million in 2012, compared to a benefit of $29.0 million in 2011.  These amounts represent the cash received net of the premium expense recognized for those hedges.

Aircraft Maintenance

Aircraft maintenance increased by $2.2 million, or 2.1%, compared to the prior-year period primarily due to engine events and additional component costs associated with higher block hours. We expect aircraft maintenance to be slightly higher for all of 2012 in line with additional block hours and the timing of scheduled maintenance events.

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Aircraft Rent

Aircraft rent declined $2.5 million, or 4.2%, compared to the prior-period primarily due to 13 fewer CRJ 700 aircraft in 2012 compared to 2011. We expect aircraft rent to be slightly lower for all of 2012 as we continue to purchase aircraft.

Landing Fees and Other Rentals

Landing fees and other rentals increased $5.2 million, or 4.4%, compared to the first six months of 2011 primarily due to increases in facilities rents across our network and increases in our landing fee rates. We expect landing fees and other rentals to be higher in 2012 due to increased rates and a slight increase in departures.

Contracted Services

Contracted services increased $8.1 million, or 9.0%, primarily due to capacity purchased flying of $9.9 million related to SkyWest, which began in May 2011. This increase was offset by lower contracted outside services of $0.9 million. We expect contracted services to be higher in 2012 due to the full-year impact of our capacity agreement with SkyWest and the increased flying to Hawaii.

Selling Expenses

Selling expenses decreased by $0.3 million, or 0.4%, compared to the first six months of 2011 as a result of lower global distribution system (GDS) fees and less promotional activity. Going forward we expect selling expenses as a percentage of revenue to be lower than 2011 due to favorable rate changes.

Depreciation and Amortization

Depreciation and amortization increased $7.5 million, or 6.1%, compared to the first six months of 2011.  This is primarily due to the annualization of Q400 and B737-800 aircraft acquired in the prior year, as well as the deliveries in the current year. Additionally, we incurred depreciation of $1.9 million from March 2012 when we placed Terminal 6 at LAX into service.

We expect depreciation and amortization to be higher in 2012 in line with our remaining four new aircraft deliveries and the annualization of Terminal 6 at LAX.

Food and Beverage Service

Food and beverage costs increased $5.2 million, or 16.1%, from the first six months of the prior-year due to a 4.7% increase in the number of passengers, a 19% increase in sales of buy on board products, increased costs related to our premium wine program and serving Starbucks coffee, and additional costs associated with food delivery. We expect food and beverage costs to be higher in 2012 due to increased passenger and departure volume.

Other Operating Expenses

Other operating expenses increased $6.8 million, or 5.7%, compared to the first six months of 2011.  The increase is primarily driven by IT and professional services costs of $5.9 million associated with our key initiatives and infrastructure improvements, and higher personnel non-wage costs such as hotels, meals and per diems of $3.3 million. These increases were offset by a reduction in uniform costs and passenger remuneration from the prior period. We expect other operating expenses to be higher for the full year of 2012 due to professional services, IT and training costs.

Fleet Transition and Restructuring Related Expenses

Fleet transition costs decreased $36.9 million, as we completed our transition to an all Q400 fleet at Horizon in the third quarter of 2011.

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Operating Costs per Available Seat Mile (CASM)

Our operating costs per ASM are summarized below:

	Six Months Ended June 30,
	2012			2011			% Change
Consolidated:
CASM		13.51	¢		12.92	¢	4.6
Less the following components:
Aircraft fuel, including hedging gains and losses	4.91			4.06			20.9
Fleet transition costs	—			0.25			NM
CASM excluding fuel and fleet transition costs		8.60	¢		8.61	¢	(0.1	)
	Six Months Ended June 30,
	2012			2011			% Change
Mainline:
CASM		12.50	¢		11.56	¢	8.1
Less the following components:
Aircraft fuel, including hedging gains and losses	4.83			3.93			22.9
CASM excluding fuel		7.67	¢		7.63	¢	0.5

NM - Not Meaningful

CONSOLIDATED NONOPERATING INCOME (EXPENSE)

Net nonoperating expense was $12.5 million in the first six months of 2012 compared to $23.9 million in the same period of 2011. The $11.4 million decrease is due to a lower average outstanding debt balance, additional capitalized interest due to higher levels of aircraft purchase deposits and capital expenditures, partially offset by lower investment returns in our marketable securities portfolio.

CONSOLIDATED INCOME TAX EXPENSE

We provide for income taxes based on either our estimate of the effective tax rate for the full year or the actual year-to-date effective rate if it is our best estimate of our annual rate. Our effective income tax rate for the first six months of 2012 of 38.4%, is consistent with our effective tax rate of 38.6% for the first six months of 2011.

Our effective tax rate can vary significantly between quarters and for the full year, depending on the magnitude of non-deductible expenses in proportion to estimated pretax results.

LIQUIDITY AND CAPITAL RESOURCES

Our primary sources of liquidity are:

• Our existing cash and marketable securities balance of $1.2 billion (which represents 26% of trailing 12 months revenue) and our expected cash from operations;

• Aircraft financing – the 40 unencumbered aircraft (as of June 30, 2012) in our operating fleet that could be financed, if necessary;

• Our combined $200 million bank line-of-credit facilities (currently none outstanding).

In the second quarter of 2012, we took free and clear delivery of three B737-800 aircraft, paid off outstanding debt associated with seven aircraft and made scheduled debt payments totaling $62.9 million. In addition, we continued to return capital to our shareholders by repurchasing $26.3 million of our common stock in the first half of 2012. Finally, we made voluntary contributions to our defined-benefit pension plans of $23.6 million in 2012, although there were no funding requirements. We will continue to focus on preserving a strong liquidity position and evaluate our cash needs as conditions change.  

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The overall strength of our balance sheet was one of the contributing factors for Standard & Poor's recent decision to change our outlook from “Stable” to “Positive” during the period.

We believe that our current cash and marketable securities balance combined with future cash flows from operations and other sources of liquidity will be sufficient to fund our operations for the foreseeable future.

In our cash and marketable securities portfolio, we invest only in securities that meet our overall investment strategy of maintaining and securing investment principal. Our investment portfolio is managed by reputable financial institutions and is continually reviewed to ensure that the investments are aligned with our strategy. As of June 30, 2012, we had an $11.6 million unrealized gain on our $1.2 billion cash and marketable securities balance.

The table below presents the major indicators of financial condition and liquidity: 

(in millions, except per share and debt-to-capital amounts)	June 30, 2012			December 31, 2011			Change
Cash and marketable securities	$	1,185.4		$	1,140.9		3.8	%
Cash and marketable securities as a percentage of trailing twelve months revenue	26		%	26		%	(0.0) pts
Long-term debt, net of current portion	$	957.1		$	1,099.0		(14.8	)%
Shareholders’ equity	$	1,283.0		$	1,173.2		8.6	%
Long-term debt-to-capital assuming aircraft operating leases are capitalized at seven times annualized rent	58%:42%			62%:38%			(4.0) pts

The following discussion summarizes the primary drivers of the increase in our cash and marketable securities balance and our expectation of future cash requirements.

ANALYSIS OF OUR CASH FLOWS

Cash Provided by Operating Activities

For the first half of 2012, net cash provided by operating activities was $455.7 million, compared to $368.7 million during the same period in 2011. The $87.0 million increase was primarily driven by lower PBP payouts in 2012 of $18.2 million, compared to 2011. Additionally, we had increased revenues with slightly higher advanced ticket sales, offset by higher fuel, less benefit from fuel hedges, and increased non-fuel operating expenses.

We typically generate positive cash flows from operations, and expect to use a portion to invest in aircraft, flight equipment, and other equipment.

Cash Used in Investing Activities

Cash used in investing activities was $410.7 million during the first six months of 2012, compared to $241.9 million during the same period of 2011. Our capital expenditures were $254.8 million, or $13.7 million higher than the same period in 2011, due to deposits related to future deliveries including our four B737-900ER aircraft that will be delivered in the fourth quarter this year, offset by six fewer Q400 deliveries compared to the prior period.

Additionally, we had net purchases of marketable securities of $106.8 million, compared to net sales of $31.3 million in the prior period to fund capital expenditures.

We currently expect capital expenditures for all of 2012 and 2013 to be as follows (in millions):

	2012		2013
Aircraft and aircraft purchase deposits	$	380	$	295
Other flight equipment	30		20
Other property and equipment	60		65
Total property and equipment additions	$	470	$	380

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The decrease in expected capital expenditures from previously reported in our Form 10-Q for the quarter ended March 31, 2012, is due to slight modifications in our Boeing 737 delivery schedule. One aircraft delivery was moved into December 2012 from January 2013 and two 737s scheduled for mid-2013 were moved into 2014.

Cash Used by Financing Activities

Net cash used by financing activities was $111.8 million during the first six months of 2012 and $149.3 million during the same period in 2011. During the current year, we had scheduled debt payments of $62.9 million, debt prepayments of $102.5 million, and stock repurchases of $26.3 million, partially offset by proceeds of $49.3 million related to three B737-700 sale-leasebacks.

One of our debt agreements secured by one aircraft has a loan-to-value covenant. The balance on this agreement as of June 30, 2012 was $10.0 million. Because the current loan-to-value ratio exceeds the requirement by a comfortable margin, we do not expect this covenant to have any impact on our liquidity position.

We plan to meet our capital and operating commitments through internally generated funds from operations and cash and marketable securities on hand, along with additional debt financing if necessary.

Bank Line-of-Credit Facility

The Company has two $100 million credit facilities. Both facilities have variable interest rates based on LIBOR plus a specified margin. Borrowings on one of the $100 million facilities, which expires in March 2013, are secured by aircraft. Borrowings on the other $100 million facility, which expires in March 2016, are secured by certain accounts receivable, spare engines, spare parts and ground service equipment. The Company has no immediate plans to borrow using either of these facilities.

CONTRACTUAL OBLIGATIONS AND COMMITMENTS

Aircraft Purchase Commitments

Overall, we have firm orders to purchase 25 aircraft, as set forth below. We also have options to acquire 39 additional B737s and options to acquire 10 Q400s.

The following table summarizes aircraft purchase commitments by year:

Aircraft	Delivery Period - Firm Orders
	Remainder of 2012	2013	2014	2015	Beyond 2015	Total
Boeing 737-800	—	—	1	2	—	3
Boeing 737-900ER	4	9	9	—	—	22
Total	4	9	10	2	—	25

We expect to pay for the firm future aircraft deliveries with cash on hand.  If we exercise our options for additional deliveries, we may finance the aircraft through internally generated cash, long-term debt, or operating lease arrangements.

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Future Fuel Hedge Positions

We use both call options for crude oil futures and swap agreements for jet fuel refining margins to hedge against price volatility of future jet fuel consumption. We have refining margin swaps in place for approximately 50% of our third quarter 2012 estimated jet fuel purchases at an average price of 73 cents per gallon. Our crude oil positions are as follows:

	Approximate % of Expected Fuel Requirements	Weighted-Average Crude Oil Price per Barrel	Average Premium Cost per Barrel
Third Quarter 2012	50%	$100	$10
Fourth Quarter 2012	50%	$100	$10
Remainder of 2012	50%	$100	$10
First Quarter 2013	50%	$98	$12
Second Quarter 2013	50%	$98	$12
Third Quarter 2013	44%	$99	$12
Fourth Quarter 2013	38%	$100	$12
Full Year 2013	46%	$99	$12
First Quarter 2014	33%	$100	$12
Second Quarter 2014	28%	$99	$12
Third Quarter 2014	22%	$98	$12
Fourth Quarter 2014	17%	$100	$11
Full Year 2014	25%	$99	$12
First Quarter 2015	11%	$99	$10
Second Quarter 2015	6%	$92	$10
Full Year 2015	4%	$96	$10

Contractual Obligations

The following table provides a summary of our principal payments under current and long-term debt obligations, operating lease commitments; aircraft purchase commitments and other obligations as of June 30, 2012.

(in millions)	Remainder of 2012		2013		2014		2015		2016		Beyond 2016		Total
Current and long-term debt obligations	$	108.6	$	160.9	$	117.1	$	113.4	$	110.6	$	529.9	$	1,140.5
Operating lease commitments(a)	73.6		184.1		164.6		131.4		99.1		268.6		921.4
Aircraft purchase commitments	181.8		333.2		194.6		48.0		18.4		36.8		812.8
Interest obligations(b)	29.5		50.6		42.6		37.3		31.9		70.2		262.1
Other obligations(c)	30.6		49.3		44.1		28.1		18.3		26.5		196.9
Total	$	424.1	$	778.1	$	563.0	$	358.2	$	278.3	$	932.0	$	3,333.7

^(a)  Operating lease commitments generally include aircraft operating leases, airport property and hangar leases, office space, and other equipment leases.

^(b)  For variable-rate debt, future obligations are shown above using interest rates in effect as of June 30, 2012.

^(c)  Includes minimum obligations under our long-term power-by-the-hour maintenance agreements and obligations associated with third-party CPAs with SkyWest and PenAir. Refer to the "Commitments" note in the condensed consolidated financial statements for further information.

Pension Obligations

The table above excludes contributions to our various pension plans. Although there is no minimum required contribution in 2012, the Company expects to contribute between $10 million and $15 million during the remainder of the year.

Credit Card Agreements

We have agreements with a number of credit card companies to process the sale of tickets and other services. Under these agreements, there are material adverse change clauses that, if triggered, could result in the credit card companies holding back a

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reserve from our credit card receivables. Under one such agreement, we could be required to maintain a reserve if our credit rating is downgraded to or below a rating specified by the agreement. Under another such agreement, we would be obligated to maintain a reserve if our cash and marketable securities balance fell below $350 million. We are not currently required to maintain any reserve under these agreements, but if we were, our financial position and liquidity could be materially harmed.

Deferred Income Taxes

For federal income tax purposes, the majority of our assets are fully depreciated over a seven-year life using an accelerated depreciation method. For financial reporting purposes, the majority of our assets are depreciated over 15 to 20 years to an estimated salvage value using the straight-line basis. This difference has created a significant deferred tax liability. At some point in the future the depreciation basis will reverse, potentially resulting in an increase in income taxes paid. While it is possible that we could have material cash obligations for this deferred liability at some point in the future, we cannot estimate the timing of long-term cash flows with reasonable accuracy. Taxable income and cash taxes payable in the short term are impacted by many items, including the amount of book income generated, which can be volatile depending on revenue and fuel prices, level of pension funding (which is generally not known until late each year), whether "bonus depreciation" provisions are available, as well as other legislative changes that are out of our control. Based on year-to-date earnings as of June 30, 2012, and our current visibility into third quarter revenues, we expect to pay cash taxes of between $75 million and $125 million for the 2012 tax year.

CRITICAL ACCOUNTING ESTIMATES

For information on our critical accounting estimates, see Item 7 "Management's Discussion and Analysis of Financial Condition and Results of Operations" of our Annual Report on Form 10-K for the year ended December 31, 2011.

ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURE ABOUT MARKET RISK

There have been no material changes in market risk from the information provided in Item 7A “Quantitative and Qualitative Disclosure About Market Risk” in our Annual Report on Form 10-K for the year ended December 31, 2011.

ITEM 4. CONTROLS AND PROCEDURES

Evaluation of Disclosure Controls and Procedures

As of June 30, 2012, an evaluation was performed under the supervision and with the participation of our management, including our chief executive officer and chief financial officer (collectively, our “certifying officers”), of the effectiveness of the design and operation of our disclosure controls and procedures. These disclosure controls and procedures are designed to ensure that the information required to be disclosed by us in our periodic reports filed with or submitted to the Securities and Exchange Commission (the SEC) is recorded, processed, summarized and reported within the time periods specified by the SEC's rules and forms, and includes, without limitation, controls and procedures designed to ensure that such information is accumulated and communicated to our management, including our certifying officers, as appropriate to allow timely decisions regarding required disclosure. Our certifying officers concluded, based on their evaluation, that disclosure controls and procedures were effective as of June 30, 2012.

Changes in Internal Control over Financial Reporting

We made no changes in our internal control over financial reporting during the quarter ended June 30, 2012, that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

PART II

ITEM 1. LEGAL PROCEEDINGS

We are a party to routine litigation matters incidental to our business. Management believes the ultimate disposition of these matters is not likely to materially affect our financial position or results of operations. This forward-looking statement is based on management’s current understanding of the relevant law and facts, and it is subject to various contingencies, including the potential costs and risks associated with litigation and the actions of judges and juries.

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ITEM 1A. RISK FACTORS

There have been no material changes to the risk factors affecting our business, financial condition or future results from those set forth in Item 1A "Risk Factors” in our Annual Report on Form 10-K for the year ended December 31, 2011. However, you should carefully consider the factors discussed in such section of our Annual Report on Form 10-K, which could materially affect our business, financial condition or future results. Additional risks and uncertainties not currently known to us or that we currently deem to be immaterial also may materially adversely affect our business, financial condition and/or operating results.

ITEM 2. UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS

This table provides certain information with respect to our purchases of shares of our common stock during the second quarter of 2012.  

	Total Number of Shares Purchased	Average Price Paid per Share		Total Number of Shares (or units) Purchased as Part of Publicly Announced Plans or Programs	Maximum remaining dollar value of shares that can be purchased under the plan
April 1, 2012 - April 30, 2012(a)	140,000	$	34.95	140,000
May 1, 2012 - May 31, 2012(a)	154,000	33.48		154,000
June 1, 2012 - June 30, 2012(a)	212,000	35.17		212,000
Total	506,000	$	34.59	506,000	$	25,387,103

^(a)  Purchased pursuant to a $50 million repurchase plan authorized by the Board of Directors in February 2012. This plan will expire in February 2013.

ITEM 3. DEFAULTS UPON SENIOR SECURITIES

None

ITEM 4. MINE SAFETY DISCLOSURES

None

ITEM 5. OTHER INFORMATION

None

ITEM 6. EXHIBITS

The following documents are filed as part of this report:

1. Exhibits: See Exhibit Index.

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SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

ALASKA AIR GROUP, INC.

/s/    BRANDON S. PEDERSEN

Brandon S. Pedersen

Vice President/Finance and Chief Financial Officer

(Principal Financial and Accounting Officer)

August 8, 2012

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EXHIBIT INDEX

Exhibit Number	Exhibit Description
31.1	Certification of Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
31.2	Certification of Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
32.1	Certification of Chief Executive Officer Pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
32.2	Certification of Chief Financial Officer Pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
101.INS	XBRL Instance Document
101.SCH	XBRL Taxonomy Extension Schema Document
101.CAL	XBRL Taxonomy Extension Calculation Linkbase Document
101.DEF	XBRL Taxonomy Extension Definition Linkbase Document
101.LAB	XBRL Taxonomy Extension Label Linkbase Document
101.PRE	XBRL Taxonomy Extension Presentation Linkbase Document

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EX-31.1

EXHIBIT 31.1

CERTIFICATIONS

I, Bradley D. Tilden, certify that:

1. I have reviewed this annual report on Form 10-Q of Alaska Air Group, Inc. for the period ended June 30, 2012;

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 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 15d-15(f)) for the registrant and we 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 generally 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 fourth fiscal quarter that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

e) 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:

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.

August 8, 2012

By	/s/ BRADLEY D. TILDEN
	Bradley D. Tilden
	President and Chief Executive Officer

EX-31.2

EXHIBIT 31.2

CERTIFICATIONS

I, Brandon S. Pedersen, certify that:

1. I have reviewed this annual report on Form 10-Q of Alaska Air Group, Inc. for the period ended June 30, 2012;

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 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 15d-15(f)) for the registrant and we 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 generally 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 fourth fiscal quarter 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:

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.

August 8, 2012

By	/s/ BRANDON S. PEDERSEN
	Brandon S. Pedersen
	Chief Financial Officer

EX-32.1

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 of Alaska Air Group, Inc. (the “Company”) on Form 10-Q for the period ended June 30, 2012 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Bradley D. Tilden, Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

(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.

August 8, 2012

By	/s/ BRADLEY D. TILDEN
	Bradley D. Tilden
	President and Chief Executive Officer

EX-32.2

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 of Alaska Air Group, Inc. (the “Company”) on Form 10-Q for the period ended June 30, 2012 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Brandon S. Pedersen, Chief Financial Officer of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

(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.

August 8, 2012

By	/s/ BRANDON S. PEDERSEN
	Brandon S. Pedersen
	Chief Financial Officer

XML

ASSETS CONSTRUCTED FOR OTHERS (TERMINAL 6 AT LAX) (DETAILS) (USD $) In Millions, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Sale Leaseback Transaction [Line Items]
Other liabilities	$ 204.8	$ 176.7
LAX airport project proprietary assets [Member]
Sale Leaseback Transaction [Line Items]
Other property and equipment	16.3	8.7
LAX airport project assets constructed for other [Member]
Sale Leaseback Transaction [Line Items]
Other property and equipment	219.2	143.4
LAX airport project total cost [Member]
Sale Leaseback Transaction [Line Items]
Other property and equipment	235.5	152.1
LAX airport project reimbursement [Member]
Sale Leaseback Transaction [Line Items]
Other liabilities	46.3	17.7
LAX airport project capitalized interest [Member]
Sale Leaseback Transaction [Line Items]
Other property and equipment	$ 6.0	$ 4.5

XML

SHAREHOLDER'S EQUITY SHAREHOLDERS' EQUITY, EARNINGS PER SHARE (Details) (Stock Options [Member]) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Stock Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	0.2	0.1	0.2	0.2

XML

SHAREHOLDER'S EQUITY SHAREHOLDER'S EQUITY, STOCK SPLIT (Details) In Millions, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Common stock, shares outstanding	70.7	35.5

XML

CASH, CASH EQUIVALENTS AND MARKETABLE SECURITIES (DETAILS) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2011	Dec. 31, 2010
Cash and Cash Equivalents [Abstract]
Cash	$ 23.2		$ 23.2		$ 62.1
Money market funds	12.2		12.2		40.1
Cash and cash equivalents	35.4	67.0	35.4	67.0	102.2	89.5
Available-for-sale Securities, Current [Abstract]
Marketable securities, Cost Basis	1,139.0		1,139.0		1,029.5
Marketable securities, Unrealized Gains	11.6		11.6		12.2
Marketable securities, Unrealized Losses	(0.6)		(0.6)		(3.0)
Marketable securities, Fair Value	1,150.0		1,150.0		1,038.7
Cash and marketables securities, Cost Basis	1,174.4		1,174.4		1,131.7
Total cash and marketable securities	1,185.4		1,185.4		1,140.9
Available-for-sale Securities, Activity [Abstract]
Proceeds from sales and maturities	242.3	145.0	430.4	459.0
Gross realized gains	2.0	1.4	3.6	3.3
Gross realized losses	0.5	0.4	0.8	1.7
Other-than-temporary impairments on investments	0	0	0.3	0
Percentage of marketable securities maturing in 2012	9.80%		9.80%
Percentage of marketable securities maturing in 2013	29.50%		29.50%
Percentage of marketable securities maturing after 2013	60.70%		60.70%
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Investments with continuous unrealized losses, Less than 12 months, Fair Value	132.6		132.6		204.2
Investments with continuous unrealized losses, Less than 12 months, Unrealized Losses	(0.6)		(0.6)		(2.7)
Investments with continuous unrealized losses, Greater than 12 months, Fair Value	0		0		4.0
Investments with continuous unrealized losses, Greater than 12 months, Unrealized Losses	0		0		(0.3)
Investments with continuous unrealized losses, Total Fair Value	132.6		132.6		208.2
Investments with continuous unrealized losses, Total Unrealized Losses	(0.6)		(0.6)		(3.0)
U.S. government and agency securities [Member]
Available-for-sale Securities, Current [Abstract]
Marketable securities, Cost Basis	366.0		366.0		292.5
Marketable securities, Unrealized Gains	2.8		2.8		3.4
Marketable securities, Unrealized Losses	0		0		0
Marketable securities, Fair Value	368.8		368.8		295.9
Foreign government bonds [Member]
Available-for-sale Securities, Current [Abstract]
Marketable securities, Cost Basis	41.4		41.4		24.9
Marketable securities, Unrealized Gains	0.9		0.9		0.5
Marketable securities, Unrealized Losses	0		0		0
Marketable securities, Fair Value	42.3		42.3		25.4
Asset-backed securities [Member]
Available-for-sale Securities, Current [Abstract]
Marketable securities, Cost Basis	90.3		90.3		58.2
Marketable securities, Unrealized Gains	0.4		0.4		0.1
Marketable securities, Unrealized Losses	0		0		(0.3)
Marketable securities, Fair Value	90.7		90.7		58.0
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Investments with continuous unrealized losses, Less than 12 months, Fair Value					31.7
Investments with continuous unrealized losses, Less than 12 months, Unrealized Losses					(0.1)
Investments with continuous unrealized losses, Greater than 12 months, Fair Value					1.1
Investments with continuous unrealized losses, Greater than 12 months, Unrealized Losses					(0.2)
Investments with continuous unrealized losses, Total Fair Value					32.8
Investments with continuous unrealized losses, Total Unrealized Losses					(0.3)
Mortgage-backed securities [Member]
Available-for-sale Securities, Current [Abstract]
Marketable securities, Cost Basis	109.6		109.6		124.1
Marketable securities, Unrealized Gains	0.9		0.9		1.1
Marketable securities, Unrealized Losses	(0.1)		(0.1)		(0.3)
Marketable securities, Fair Value	110.4		110.4		124.9
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Investments with continuous unrealized losses, Less than 12 months, Fair Value	26.3		26.3		35.1
Investments with continuous unrealized losses, Less than 12 months, Unrealized Losses	(0.1)		(0.1)		(0.2)
Investments with continuous unrealized losses, Greater than 12 months, Fair Value	0		0		1.9
Investments with continuous unrealized losses, Greater than 12 months, Unrealized Losses	0		0		(0.1)
Investments with continuous unrealized losses, Total Fair Value	26.3		26.3		37.0
Investments with continuous unrealized losses, Total Unrealized Losses	(0.1)		(0.1)		(0.3)
Corporate notes and bonds [Member]
Available-for-sale Securities, Current [Abstract]
Marketable securities, Cost Basis	516.8		516.8		518.0
Marketable securities, Unrealized Gains	6.5		6.5		7.0
Marketable securities, Unrealized Losses	(0.5)		(0.5)		(2.4)
Marketable securities, Fair Value	522.8		522.8		522.6
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Investments with continuous unrealized losses, Less than 12 months, Fair Value	106.3		106.3		137.4
Investments with continuous unrealized losses, Less than 12 months, Unrealized Losses	(0.5)		(0.5)		(2.4)
Investments with continuous unrealized losses, Greater than 12 months, Fair Value	0		0		1.0
Investments with continuous unrealized losses, Greater than 12 months, Unrealized Losses	0		0		0
Investments with continuous unrealized losses, Total Fair Value	106.3		106.3		138.4
Investments with continuous unrealized losses, Total Unrealized Losses	(0.5)		(0.5)		(2.4)
Municipal securities [Member]
Available-for-sale Securities, Current [Abstract]
Marketable securities, Cost Basis	14.9		14.9		11.8
Marketable securities, Unrealized Gains	0.1		0.1		0.1
Marketable securities, Unrealized Losses	0		0		0
Marketable securities, Fair Value	$ 15.0		$ 15.0		$ 11.9

XML

MILEAGE PLAN MILEAGE PLAN (TABLES)

6 Months Ended

Jun. 30, 2012

MILEAGE PLAN [Abstract]

Mileage Plan Liabilities [Table Text Block]

Alaska's Mileage Plan liabilities and deferrals are included in the consolidated balance sheets (in millions) as follows:

	June 30, 2012		December 31, 2011
Current Liabilities:
Other accrued liabilities	$	289.1	$	271.4
Other Liabilities and Credits:
Deferred revenue	397.8		392.2
Other liabilities	17.2		16.9
Total	$	704.1	$	680.5

Mileage Plan Revenue [Table Text Block]

Alaska's Mileage Plan revenue is included in the consolidated statements of operations (in millions) as follows:

	Three Months Ended June 30,				Six Months Ended June 30,
	2012		2011		2012		2011
Passenger revenues	$	48.2	$	54.2	$	90.8	$	104.5
Other-net revenues	55.2		51.6		102.7		97.2
Total Mileage Plan revenues	$	103.4	$	105.8	$	193.5	$	201.7

XML

OPERATING SEGMENT INFORMATION (DETAILS) (USD $) In Millions, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2012		Jun. 30, 2011		Jun. 30, 2012		Jun. 30, 2011
Operating revenues
Passenger, Mainline	$ 862.7		$ 774.2		$ 1,586.1		$ 1,433.5
Passenger, Regional	187.6		179.0		360.4		340.6
Total passenger revenue	1,050.3		953.2		1,946.5		1,774.1
Segment Reporting Information, Intersegment Revenue	0		0		0		0
Freight and mail	30.6		29.1		55.0		54.0
Other - net	132.3		127.9		251.0		247.3
Total Operating Revenues	1,213.2		1,110.2		2,252.5		2,075.4
Operating expenses
Operating expenses, excluding fuel	665.6		654.9		1,313.7		1,291.8
Economic fuel	431.8		397.5		750.6		592.0
Total Operating Expenses	1,097.4		1,052.4		2,064.3		1,883.8
Nonoperating income (expense)
Interest income	5.1		6.3		10.0		13.9
Interest expense	(17.2)		(20.0)		(33.8)		(43.4)
Other	5.4		2.9		11.3		5.6
Nonoperating Income (Expense) Total	(6.7)		(10.8)		(12.5)		(23.9)
Income (loss) before income tax	109.1		47.0		175.7		167.7
Air Group Adjusted [Member]
Operating revenues
Passenger, Mainline	862.7	[1]	774.2	[1]	1,586.1	[1]	1,433.5	[1]
Passenger, Regional	187.6	[1]	179.0	[1]	360.4	[1]	340.6	[1]
Total passenger revenue	1,050.3	[1]	953.2	[1]	1,946.5	[1]	1,774.1	[1]
Segment Reporting Information, Intersegment Revenue	0		0		0		0
Freight and mail	30.6	[1]	29.1	[1]	55.0	[1]	54.0	[1]
Other - net	132.3	[1]	127.9	[1]	251.0	[1]	247.3	[1]
Total Operating Revenues	1,213.2	[1]	1,110.2	[1]	2,252.5	[1]	2,075.4	[1]
Operating expenses
Operating expenses, excluding fuel	665.6	[1]	628.1	[1]	1,313.7	[1]	1,254.9	[1]
Economic fuel	362.2	[1]	326.6	[1]	700.9	[1]	603.1	[1]
Total Operating Expenses	1,027.8	[1]	954.7	[1]	2,014.6	[1]	1,858.0	[1]
Nonoperating income (expense)
Interest income	5.1	[1]	6.3	[1]	10.0	[1]	13.9	[1]
Interest expense	(17.2)	[1]	(20.0)	[1]	(33.8)	[1]	(43.4)	[1]
Other	5.4	[1]	2.9	[1]	11.3	[1]	5.6	[1]
Nonoperating Income (Expense) Total	(6.7)	[1]	(10.8)	[1]	(12.5)	[1]	(23.9)	[1]
Income (loss) before income tax	178.7	[1]	144.7	[1]	225.4	[1]	193.5	[1]
Alaska Mainline [Member]
Operating revenues
Passenger, Mainline	862.7		774.2		1,586.1		1,433.5
Passenger, Regional	0		0		0		0
Total passenger revenue	862.7		774.2		1,586.1		1,433.5
Segment Reporting Information, Intersegment Revenue	0		0		0		0
Freight and mail	29.5		28.0		53.0		51.9
Other - net	115.4		110.7		218.2		212.7
Total Operating Revenues	1,007.6		912.9		1,857.3		1,698.1
Operating expenses
Operating expenses, excluding fuel	532.2		498.4		1,051.8		996.1
Economic fuel	316.7		285.2		611.1		523.6
Total Operating Expenses	848.9		783.6		1,662.9		1,519.7
Nonoperating income (expense)
Interest income	4.4		7.1		9.3		15.8
Interest expense	(12.7)		(16.3)		(25.3)		(36.0)
Other	5.1		2.3		10.4		4.4
Nonoperating Income (Expense) Total	(3.2)		(6.9)		(5.6)		(15.8)
Income (loss) before income tax	155.5		122.4		188.8		162.6
Alaska Regional [Member]
Operating revenues
Passenger, Mainline	0		0		0		0
Passenger, Regional	187.6		179.0		360.4		340.6
Total passenger revenue	187.6		179.0		360.4		340.6
Segment Reporting Information, Intersegment Revenue	0		0		0		0
Freight and mail	1.1		1.0		2.0		2.0
Other - net	15.1		15.4		29.1		30.4
Total Operating Revenues	203.8		195.4		391.5		373.0
Operating expenses
Operating expenses, excluding fuel	139.0		138.1		275.8		271.0
Economic fuel	45.5		41.4		89.8		79.5
Total Operating Expenses	184.5		179.5		365.6		350.5
Nonoperating income (expense)
Interest income	0		0		0		0
Interest expense	0		0		0		0
Other	0		0		0		0
Nonoperating Income (Expense) Total	0		0		0		0
Income (loss) before income tax	19.3		15.9		25.9		22.5
Horizon [Member]
Operating revenues
Passenger, Mainline	0		0		0		0
Passenger, Regional	0		0		0		0
Total passenger revenue	0		0		0		0
Segment Reporting Information, Intersegment Revenue	89.2		93.5		176.2		188.1
Freight and mail	0		0.1		0		0.1
Other - net	1.8		1.8		3.7		4.2
Total Operating Revenues	91.0		95.4		179.9		192.4
Operating expenses
Operating expenses, excluding fuel	83.1		83.8		161.4		174.0
Economic fuel	0		0		0		0
Total Operating Expenses	83.1		83.8		161.4		174.0
Nonoperating income (expense)
Interest income	0		0		0		0
Interest expense	(4.1)		(4.4)		(8.1)		(9.1)
Other	0.4		0.2		0.8		1.0
Nonoperating Income (Expense) Total	(3.7)		(4.2)		(7.3)		(8.1)
Income (loss) before income tax	4.2		7.4		11.2		10.3
Intersegment Elimination [Member]
Operating revenues
Passenger, Mainline	0		0		0		0
Passenger, Regional	0		0		0		0
Total passenger revenue	0		0		0		0
Segment Reporting Information, Intersegment Revenue	(89.2)		(93.5)		(176.2)		(188.1)
Freight and mail	0		0		0		0
Other - net	0		0		0		0
Total Operating Revenues	(89.2)		(93.5)		(176.2)		(188.1)
Operating expenses
Operating expenses, excluding fuel	(88.7)		(92.2)		(175.3)		(186.2)
Economic fuel	0		0		0		0
Total Operating Expenses	(88.7)		(92.2)		(175.3)		(186.2)
Nonoperating income (expense)
Interest income	0.7		(0.8)		0.7		(1.9)
Interest expense	(0.4)		0.7		(0.4)		1.7
Other	(0.1)		0.4		0.1		0.2
Nonoperating Income (Expense) Total	0.2		0.3		0.4		0
Income (loss) before income tax	(0.3)		(1.0)		(0.5)		(1.9)
Special Charges [Member]
Operating revenues
Passenger, Mainline	0		0		0		0
Passenger, Regional	0		0		0		0
Total passenger revenue	0		0		0		0
Segment Reporting Information, Intersegment Revenue	0		0		0		0
Freight and mail	0		0		0		0
Other - net	0		0		0		0
Total Operating Revenues	0		0		0		0
Operating expenses
Operating expenses, excluding fuel	0		26.8	[2]	0		36.9	[2]
Economic fuel	69.6	[3]	70.9	[3]	49.7	[3]	(11.1)	[3]
Total Operating Expenses	69.6		97.7		49.7		25.8
Nonoperating income (expense)
Interest income	0		0		0		0
Interest expense	0		0		0		0
Other	0		0		0		0
Nonoperating Income (Expense) Total	0		0		0		0
Income (loss) before income tax	$ (69.6)		$ (97.7)		$ (49.7)		$ (25.8)

[1] The adjusted column represents the financial information that is reviewed by management to assess performance of operations and determine capital allocations and does not include certain charges.

[2] Refer to Note 12 for a summary of special charges.

[3] Represents adjustments to reflect the timing of gain or loss recognition resulting from mark-to-market fuel-hedge accounting.

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LONG-TERM DEBT - LINE OF CREDIT (DETAILS) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2012
Line of Credit Facility [Line Items]
Line of Credit Facility, Minimum Asset Requirement Amount	$ 500
Secured by aircraft [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	100
Line of Credit Facility, Expiration Date	Mar. 29, 2013
Secured by other [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 100
Line of Credit Facility, Expiration Date	Mar. 31, 2016

XML

FAIR VALUE MEASUREMENTS - FAIR VALUE OF ASSETS AND LIABILITIES (DETAILS) (Recurring [Member], USD $) In Millions, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Fuel hedge contracts [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative instruments, assets	$ 61.3	$ 116.9
Derivative instruments, liabilities		(10.3)
Fuel hedge contracts [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative instruments, assets	0	0
Derivative instruments, liabilities		0
Fuel hedge contracts [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative instruments, assets	61.3	116.9
Derivative instruments, liabilities		(10.3)
Interest rate swaps agreements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative instruments, liabilities	(32.0)	(28.8)
Interest rate swaps agreements [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative instruments, liabilities	0	0
Interest rate swaps agreements [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative instruments, liabilities	(32.0)	(28.8)
U.S. government and agency securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	368.8	295.9
U.S. government and agency securities [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	368.8	295.9
U.S. government and agency securities [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	0	0
Foreign government bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	42.3	25.4
Foreign government bonds [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	0	0
Foreign government bonds [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	42.3	25.4
Asset-backed securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	90.7	58.0
Asset-backed securities [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	0	0
Asset-backed securities [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	90.7	58.0
Mortgage-backed securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	110.4	124.9
Mortgage-backed securities [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	0	0
Mortgage-backed securities [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	110.4	124.9
Corporate notes and bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	522.8	522.6
Corporate notes and bonds [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	0	0
Corporate notes and bonds [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	522.8	522.6
Municipal securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	15.0	11.9
Municipal securities [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	0	0
Municipal securities [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	$ 15.0	$ 11.9

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SHAREHOLDER'S EQUITY, STOCK REPURCHASE (DETAILS) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended		1 Months Ended	3 Months Ended		6 Months Ended		1 Months Ended	3 Months Ended		6 Months Ended		1 Months Ended	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Feb. 29, 2012 February 2012 Stock Repurchase Program [Member]	Jun. 30, 2012 February 2012 Stock Repurchase Program [Member]	Jun. 30, 2011 February 2012 Stock Repurchase Program [Member]	Jun. 30, 2012 February 2012 Stock Repurchase Program [Member]	Jun. 30, 2011 February 2012 Stock Repurchase Program [Member]	Jun. 30, 2011 June 2011 Stock Repurchase Program [Member]	Jun. 30, 2012 June 2011 Stock Repurchase Program [Member]	Jun. 30, 2011 June 2011 Stock Repurchase Program [Member]	Jun. 30, 2012 June 2011 Stock Repurchase Program [Member]	Jun. 30, 2011 June 2011 Stock Repurchase Program [Member]	Jun. 30, 2010 June 2010 Stock Repurchase Program [Member]	Jun. 30, 2012 June 2010 Stock Repurchase Program [Member]	Jun. 30, 2011 June 2010 Stock Repurchase Program [Member]	Jun. 30, 2012 June 2010 Stock Repurchase Program [Member]	Jun. 30, 2011 June 2010 Stock Repurchase Program [Member]
Equity, Class of Treasury Stock [Line Items]
Authorized amount under share repurchase program					$ 50					$ 50					$ 50
Share repurchase activity (in shares)	506,000	218,600	755,340	1,086,600		506,000	0	709,000	0		0	63,000	46,340	63,000		0	155,600	0	1,023,600
Share repurchase activity	$ 17.5	$ 7.0	$ 26.3	$ 33.3		$ 17.5	$ 0	$ 24.6	$ 0		$ 0	$ 2.1	$ 1.7	$ 2.1		$ 0	$ 4.9	$ 0	$ 31.2
Common stock held in treasury retired			4,829,834

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DERIVATIVE INSTRUMENTS

6 Months Ended

Jun. 30, 2012

Derivative Instruments and Hedging Activities Disclosure [Abstract]

DERIVATIVE INSTRUMENTS

DERIVATIVE INSTRUMENTS

Fuel Hedge Contracts

The Company’s operations are inherently dependent upon the price and availability of aircraft fuel. To manage economic risks associated with fluctuations in aircraft fuel prices, the Company periodically enters into call options for crude oil and swap agreements for jet fuel refining margins.

As of June 30, 2012, the Company had fuel hedge contracts outstanding covering 10.3 million barrels of crude oil that will be settled from July 2012 to June 2015. Refer to the contractual obligations and commitments section of Item 2 for further information.

Interest Rate Swap Agreements

The Company has interest rate swap agreements with a third party designed to hedge the volatility of the underlying variable interest rate in the Company's aircraft lease agreements for six Boeing 737-800 aircraft. The agreements stipulate that the Company pay a fixed interest rate over the term of the contract and receive a floating interest rate. All significant terms of the swap agreement match the terms of the lease agreements, including interest-rate index, rate reset dates, termination dates and underlying notional values. The agreements expire from February 2020 through March 2021 to coincide with the lease termination dates.

Fair Values of Derivative Instruments

Fair values of derivative instruments on the consolidated balance sheet (in millions):

	June 30, 2012			December 31, 2011
Derivative Instruments Not Designated as Hedges
Fuel hedge contracts
Fuel hedge contracts, current assets	$	22.0		$	46.7
Fuel hedge contracts, noncurrent assets	39.3			70.2
Fuel hedge contracts, current liabilities	—			(10.3		)
Derivative Instruments Designated as Hedges
Interest rate swaps
Other accrued liabilities	(5.7		)	(5.2		)
Other liabilities	(26.3		)	(23.6		)
Losses in Accumulated Other Comprehensive Loss (AOCL)	(32.0		)	(28.8		)

The net cash received (paid) for new positions and settlements was $(11.1) million and $9.6 million during the three months ended June 30, 2012 and 2011, respectively. The net cash received (paid) for new positions and settlements was $(17.5) million and $15.0 million during the six months ended June 30, 2012 and 2011, respectively.

Pretax effect of derivative instruments on earnings (in millions):

	Three Months Ended June 30,						Six Months Ended June 30,
	2012			2011			2012			2011
Derivative Instruments Not Designated as Hedges
Fuel hedge contracts
Gains (losses) recognized in aircraft fuel expense	$	(81.4	)	$	(54.4	)	$	(62.9	)	$	40.1
Derivative Instruments Designated as Hedges
Interest rate swaps
Losses recognized in aircraft rent	(1.4		)	(1.6		)	(2.9		)	(3.1		)
Losses recognized in Other Comprehensive Income (OCI)	(7.8		)	(4.9		)	(6.1		)	(4.2		)

The amounts shown as recognized in aircraft rent for cash flow hedges (interest rate swaps) represent the realized losses transferred out of AOCL to aircraft rent. The amounts shown as recognized in OCI are prior to the losses recognized in aircraft rent during the period. The Company expects $5.7 million to be reclassified from OCI to aircraft rent within the next twelve months.

Credit Risk and Collateral

The Company is exposed to credit losses in the event of non-performance by counterparties to these derivative instruments. To mitigate exposure, the Company periodically reviews the counterparties' nonperformance by monitoring the absolute exposure levels and credit ratings. The Company maintains security agreements with a number of its counterparties which may require the Company to post collateral if the fair value of the selected derivative instruments fall below specified mark-to-market thresholds. The posted collateral does not offset the fair value of the derivative instruments and is included in "Prepaid expenses and other current assets" on the consolidated balance sheet.

The Company posted collateral of $17.5 million and $0.9 million as of June 30, 2012 and December 31, 2011, respectively. The collateral was provided to one counterparty associated with the net liability position of the interest rate swap agreements offset by the net asset position of the fuel hedge contracts under a master netting arrangement.

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INCOME TAXES INCOME TAXES - OPERATING LOSS (DETAILS) (Equity Compensation in Excess of Compensation Recognized [Member], USD $) In Millions, unless otherwise specified	3 Months Ended
	Jun. 30, 2012	Dec. 31, 2011
Equity Compensation in Excess of Compensation Recognized [Member]
Operating Loss Carryforwards [Line Items]
Loss carryforwards	$ 4.9	$ 10.3
Excess tax benefit recognized	$ 9.7

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SHAREHOLDER'S EQUITY (TABLES)

6 Months Ended

Jun. 30, 2012

Jun. 30, 2011

Equity [Abstract]

Schedule of Stock by Class [Table Text Block]

.

Schedule of Treasury Stock by Class [Table Text Block]

Share repurchase activity (in millions, except share amounts):

	Three Months Ended June 30,						Six Months Ended June 30,
	2012			2011			2012			2011
	Shares	Amount		Shares	Amount		Shares	Amount		Shares	Amount
2012 Repurchase Program	506,000	$	17.5	—	$	—	709,000	$	24.6	—	$	—
2011 Repurchase Program	—	—		63,000	2.1		46,340	1.7		63,000	2.1
2010 Repurchase Program	—	—		155,600	4.9		—	—		1,023,600	31.2
	506,000	$	17.5	218,600	$	7.0	755,340	$	26.3	1,086,600	$	33.3

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COMMITMENTS (TABLES)

6 Months Ended

Jun. 30, 2012

Commitments and Contingencies Disclosure [Abstract]

Schedule of Future Minimum Rental Payments for Operating Leases and Unrecorded Unconditional Purchase Obligtaions [Table Text Block]

Future minimum fixed payments for commitments (in millions):

June 30, 2012	Aircraft Leases		Facility Leases		Aircraft Commitments		Capacity Purchase Agreements		Engine Maintenance
Remainder of 2012	$	41.8	$	31.8	$	181.8	$	9.7	$	20.9
2013	141.6		42.5		333.2		17.4		31.9
2014	126.1		38.5		194.6		17.7		26.4
2015	104.4		27.0		48.0		18.0		10.1
2016	81.9		17.2		18.4		18.3		—
Thereafter	130.7		137.9		36.8		26.5		—
Total	$	626.5	$	294.9	$	812.8	$	107.6	$	89.3

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EMPLOYEE BENEFIT PLANS - NET PENSION EXPENSE (DETAILS) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Qualified Defined Benefit [Member]
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service cost	$ 9.5	$ 9.0	$ 19.1	$ 18.0
Interest cost	18.3	18.3	36.5	36.6
Expected return on assets	(23.2)	(22.1)	(46.5)	(44.2)
Amortization of prior service cost	(0.3)	(0.2)	(0.5)	(0.4)
Recognized actuarial loss	9.9	6.1	19.8	12.2
Net pension expense	14.2	11.1	28.4	22.2
Nonqualified Defined Benefit [Member]
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service cost	0.2	0.2	0.4	0.4
Interest cost	0.5	0.5	1.0	1.1
Expected return on assets	0	0	0	0
Amortization of prior service cost	0	0	0	0
Recognized actuarial loss	0.2	0.2	0.4	0.3
Net pension expense	0.9	0.9	1.8	1.8
Postretirement Medical Benefits [Member]
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service cost	1.3	1.5	2.5	3.0
Interest cost	1.3	1.8	2.7	3.6
Expected return on assets	0	0	0	0
Amortization of prior service cost	0.2	0.1	0.3	0.2
Recognized actuarial loss	(0.2)	0.3	(0.3)	0.6
Net pension expense	$ 2.6	$ 3.7	$ 5.2	$ 7.4

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FLEET TRANSITION EXPENSES FLEET TRANSITION EXPENSES (Tables)

6 Months Ended

Jun. 30, 2012

Fleet Transition Expenses [Abstract]

Schedule of Restructuring and Related Costs [Table Text Block]

Fleet transition expenses included in the consolidated statements of operations (in millions):

	Three Months Ended June 30,				Six Months Ended June 30,
	2012		2011		2012		2011
Horizon Fleet Transition - CRJ-700	$	—	$	20.8	$	—	$	30.9
Horizon Fleet Transition - Q200	—		6.0		—		6.0
Total	$	—	$	26.8	$	—	$	36.9

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OPERATING SEGMENT INFORMATION (TABLES)

6 Months Ended

Jun. 30, 2012

Segment Reporting [Abstract]

Schedule of Segment Reporting Information, by Segment [Table Text Block]

Operating segment information is as follows (in millions):

	Three Months Ended June 30, 2012
	Alaska
	Mainline			Regional		Horizon			Consolidating			Air Group Adjusted(a)			Special Items			Consolidated
Operating revenues
Passenger
Mainline	$	862.7		$	—	$	—		$	—		$	862.7		$	—		$	862.7
Regional	—			187.6		—			—			187.6			—			187.6
Total passenger revenues	862.7			187.6		—			—			1,050.3			—			1,050.3
CPA revenues	—			—		89.2			(89.2		)	—			—			—
Freight and mail	29.5			1.1		—			—			30.6			—			30.6
Other-net	115.4			15.1		1.8			—			132.3			—			132.3
Total operating revenues	1,007.6			203.8		91.0			(89.2		)	1,213.2			—			1,213.2
Operating expenses
Operating expenses, excluding fuel	532.2			139.0		83.1			(88.7		)	665.6			—			665.6
Economic fuel(c)	316.7			45.5		—			—			362.2			69.6			431.8
Total operating expenses	848.9			184.5		83.1			(88.7		)	1,027.8			69.6			1,097.4
Nonoperating income (expense)
Interest income	4.4			—		—			0.7			5.1			—			5.1
Interest expense	(12.7		)	—		(4.1		)	(0.4		)	(17.2		)	—			(17.2		)
Other	5.1			—		0.4			(0.1		)	5.4			—			5.4
	(3.2		)	—		(3.7		)	0.2			(6.7		)	—			(6.7		)
Income (loss) before income tax	$	155.5		$	19.3	$	4.2		$	(0.3	)	$	178.7		$	(69.6	)	$	109.1

	Three Months Ended June 30, 2011
	Alaska
	Mainline			Regional		Horizon			Consolidating			Air Group Adjusted(a)			Special Items			Consolidated
Operating revenues
Passenger
Mainline	$	774.2		$	—	$	—		$	—		$	774.2		$	—		$	774.2
Regional	—			179.0		—			—			179.0			—			179.0
Total passenger revenues	774.2			179.0		—			—			953.2			—			953.2
CPA revenues	—			—		93.5			(93.5		)	—			—			—
Freight and mail	28.0			1.0		0.1			—			29.1			—			29.1
Other-net	110.7			15.4		1.8			—			127.9			—			127.9
Total operating revenues	912.9			195.4		95.4			(93.5		)	1,110.2			—			1,110.2
Operating expenses
Operating expenses, excluding fuel(b)	498.4			138.1		83.8			(92.2		)	628.1			26.8			654.9
Economic fuel(c)	285.2			41.4		—			—			326.6			70.9			397.5
Total operating expenses	783.6			179.5		83.8			(92.2		)	954.7			97.7			1,052.4
Nonoperating income (expense)
Interest income	7.1			—		—			(0.8		)	6.3			—			6.3
Interest expense	(16.3		)	—		(4.4		)	0.7			(20.0		)	—			(20.0		)
Other	2.3			—		0.2			0.4			2.9			—			2.9
	(6.9		)	—		(4.2		)	0.3			(10.8		)	—			(10.8		)
Income (loss) before income tax	$	122.4		$	15.9	$	7.4		$	(1.0	)	$	144.7		$	(97.7	)	$	47.0

	Six Months Ended June 30, 2012
	Alaska
	Mainline			Regional		Horizon			Consolidating			Air Group Adjusted(a)			Special Items			Consolidated
Operating revenues
Passenger
Mainline	$	1,586.1		$	—	$	—		$	—		$	1,586.1		$	—		$	1,586.1
Regional	—			360.4		—			—			360.4			—			360.4
Total passenger revenues	1,586.1			360.4		—			—			1,946.5			—			1,946.5
CPA revenues	—			—		176.2			(176.2		)	—			—			—
Freight and mail	53.0			2.0		—			—			55.0			—			55.0
Other-net	218.2			29.1		3.7			—			251.0			—			251.0
Total operating revenues	1,857.3			391.5		179.9			(176.2		)	2,252.5			—			2,252.5
Operating expenses
Operating expenses, excluding fuel	1,051.8			275.8		161.4			(175.3		)	1,313.7			—			1,313.7
Economic fuel(c)	611.1			89.8		—			—			700.9			49.7			750.6
Total operating expenses	1,662.9			365.6		161.4			(175.3		)	2,014.6			49.7			2,064.3
Nonoperating income (expense)
Interest income	9.3			—		—			0.7			10.0			—			10.0
Interest expense	(25.3		)	—		(8.1		)	(0.4		)	(33.8		)	—			(33.8		)
Other	10.4			—		0.8			0.1			11.3			—			11.3
	(5.6		)	—		(7.3		)	0.4			(12.5		)	—			(12.5		)
Income (loss) before income tax	$	188.8		$	25.9	$	11.2		$	(0.5	)	$	225.4		$	(49.7	)	$	175.7

	Six Months Ended June 30, 2011
	Alaska
	Mainline			Regional		Horizon			Consolidating			Air Group Adjusted(a)			Special Items			Consolidated
Operating revenues
Passenger
Mainline	$	1,433.5		$	—	$	—		$	—		$	1,433.5		$	—		$	1,433.5
Regional	—			340.6		—			—			340.6			—			340.6
Total passenger revenues	1,433.5			340.6		—			—			1,774.1			—			1,774.1
CPA revenues	—			—		188.1			(188.1		)	—			—			—
Freight and mail	51.9			2.0		0.1			—			54.0			—			54.0
Other-net	212.7			30.4		4.2			—			247.3			—			247.3
Total operating revenues	1,698.1			373.0		192.4			(188.1		)	2,075.4			—			2,075.4
Operating expenses
Operating expenses, excluding fuel(b)	996.1			271.0		174.0			(186.2		)	1,254.9			36.9			1,291.8
Economic fuel(c)	523.6			79.5		—			—			603.1			(11.1		)	592.0
Total operating expenses	1,519.7			350.5		174.0			(186.2		)	1,858.0			25.8			1,883.8
Nonoperating income (expense)
Interest income	15.8			—		—			(1.9		)	13.9			—			13.9
Interest expense	(36.0		)	—		(9.1		)	1.7			(43.4		)	—			(43.4		)
Other	4.4			—		1.0			0.2			5.6			—			5.6
	(15.8		)	—		(8.1		)	—			(23.9		)	—			(23.9		)
Income (loss) before income tax	$	162.6		$	22.5	$	10.3		$	(1.9	)	$	193.5		$	(25.8	)	$	167.7

^(a)  The adjusted column represents the financial information that is reviewed by management to assess performance of operations and determine capital allocations and does not include certain charges.

^(b)  Refer to Note 12 for a summary of special charges.

^(c)  Represents adjustments to reflect the timing of gain or loss recognition resulting from mark-to-market fuel-hedge accounting.

Total assets were as follows (in millions):

	June 30, 2012			December 31, 2011
Alaska(a)	$	4,994.9		$	4,803.3
Horizon	864.1			846.5
Parent company	1,589.4			1,583.5
Elimination of inter-company accounts	(2,024.8		)	(2,038.3		)
Consolidated	$	5,423.6		$	5,195.0

^(a)  There are no assets associated with purchased capacity flying at Alaska.

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CASH, CASH EQUIVALENTS AND MARKETABLE SECURITIES

6 Months Ended

Jun. 30, 2012

Cash, Cash Equivalents, and Short-term Investments [Abstract]

CASH, CASH EQUIVALENTS AND MARKETABLE SECURITIES

CASH, CASH EQUIVALENTS AND MARKETABLE SECURITIES

Components for cash, cash equivalents and marketable securities (in millions):

June 30, 2012	Cost Basis		Unrealized Gains		Unrealized Losses			Fair Value
Cash	$	23.2	$	—	$	—		$	23.2
Commercial paper, money market funds and other securities	12.2		—		—			12.2
Cash and cash equivalents	35.4		—		—			35.4
U.S. government and agency securities	366.0		2.8		—			368.8
Foreign government bonds	41.4		0.9		—			42.3
Asset-back securities	90.3		0.4		—			90.7
Mortgage-back securities	109.6		0.9		(0.1		)	110.4
Corporate notes and bonds	516.8		6.5		(0.5		)	522.8
Municipal securities	14.9		0.1		—			15.0
Marketable securities	1,139.0		11.6		(0.6		)	1,150.0
Total	$	1,174.4	$	11.6	$	(0.6	)	$	1,185.4

December 31, 2011	Cost Basis		Unrealized Gains		Unrealized Losses			Fair Value
Cash	$	62.1	$	—	$	—		$	62.1
Money market funds	40.1		—		—			40.1
Cash and cash equivalents	102.2		—		—			102.2
U.S. government and agency securities	292.5		3.4		—			295.9
Foreign government bonds	24.9		0.5		—			25.4
Asset-back securities	58.2		0.1		(0.3		)	58.0
Mortgage-back securities	124.1		1.1		(0.3		)	124.9
Corporate notes and bonds	518.0		7.0		(2.4		)	522.6
Municipal securities	11.8		0.1		—			11.9
Marketable securities	1,029.5		12.2		(3.0		)	1,038.7
Total	$	1,131.7	$	12.2	$	(3.0	)	$	1,140.9

Activity for marketable securities (in millions):  

	Three Months Ended June 30,				Six Months Ended June 30,
	2012		2011		2012		2011
Proceeds from sales and maturities	$	242.3	$	145.0	$	430.4	$	459.0
Gross realized gains	2.0		1.4		3.6		3.3
Gross realized losses	0.5		0.4		0.8		1.7
Other-than-temporary impairments on investments	—		—		0.3		—

Of the marketable securities on hand at June 30, 2012, 9.8% mature in 2012, 29.5% in 2013, and 60.7% thereafter.

Investments with continuous unrealized losses (in millions):

	Less than 12 months					Greater than 12 months
June 30, 2012	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses		Total Fair Value		Total Unrealized Losses
Mortgage-backed obligations	$	26.3	$	(0.1	)	$	—	$	—	$	26.3	$	(0.1	)
Corporate notes and bonds	106.3		(0.5		)	—		—		106.3		(0.5		)
Total	$	132.6	$	(0.6	)	$	—	$	—	$	132.6	$	(0.6	)

	Less than 12 months					Greater than 12 months
December 31, 2011	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Total Fair Value		Total Unrealized Losses
Asset-backed obligations	$	31.7	$	(0.1	)	$	1.1	$	(0.2	)	$	32.8	$	(0.3	)
Mortgage-backed obligations	35.1		(0.2		)	1.9		(0.1		)	37.0		(0.3		)
Corporate notes and bonds	137.4		(2.4		)	1.0		—			138.4		(2.4		)
Total	$	204.2	$	(2.7	)	$	4.0	$	(0.3	)	$	208.2	$	(3.0	)

Unrealized losses from fixed-income securities are primarily attributable to changes in interest rates. Management does not believe any remaining unrealized losses represent other-than-temporary impairments based on our evaluation of available evidence as of June 30, 2012.

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GENERAL AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES GENERAL AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Passenger, Mainline	$ 862.7	$ 774.2	$ 1,586.1	$ 1,433.5
Passenger, Regional	187.6	179.0	360.4	340.6
Total passenger revenue	1,050.3	953.2	1,946.5	1,774.1
Freight and mail	30.6	29.1	55.0	54.0
Other - net	132.3	127.9	251.0	247.3
Total Operating Revenues	1,213.2	1,110.2	2,252.5	2,075.4
Scenario, Previously Reported [Member]
Passenger, Mainline		819.9		1,522.3
Passenger, Regional		194.3		370.8
Total passenger revenue		1,014.2		1,893.1
Freight and mail		29.1		54.0
Other - net		66.9		128.3
Total Operating Revenues		$ 1,110.2		$ 2,075.4

XML

MILEAGE PLAN MILEAGE PLAN (DETAILS) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2011
Mileage Plan [Line Items]
Other accrued liabilities	$ 558.5		$ 558.5		$ 513.3
Deferred revenue	414.0		414.0		410.2
Other liabilities	204.8		204.8		176.7
Total passenger revenue	1,050.3	953.2	1,946.5	1,774.1
Other - net	132.3	127.9	251.0	247.3
Total Operating Revenues	1,213.2	1,110.2	2,252.5	2,075.4
Liabilities From Mileage Plan [Member]
Mileage Plan [Line Items]
Other accrued liabilities	289.1		289.1		271.4
Deferred revenue	397.8		397.8		392.2
Other liabilities	17.2		17.2		16.9
Liabilities	704.1		704.1		680.5
Revenue From Mileage Plan [Member]
Mileage Plan [Line Items]
Total passenger revenue	48.2	54.2	90.8	104.5
Other - net	55.2	51.6	102.7	97.2
Total Operating Revenues	$ 103.4	$ 105.8	$ 193.5	$ 201.7

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CONDENSED CONSOLIDATED BALANCE SHEETS (USD $) In Millions, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Current Assets
Cash and cash equivalents	$ 35.4	$ 102.2
Marketable securities	1,150.0	1,038.7
Total cash and marketable securities	1,185.4	1,140.9
Receivables - net	169.4	136.4
Inventories and supplies - net	47.8	44.3
Deferred income taxes	152.1	134.2
Fuel hedge contracts	22.0	46.7
Prepaid expenses and other current assets	121.7	93.0
Total Current Assets	1,698.4	1,595.5
Property and Equipment
Aircraft and other flight equipment	4,099.5	4,041.8
Other property and equipment	857.1	762.3
Deposits for future flight equipment	331.4	262.5
Property and Equipment Total	5,288.0	5,066.6
Less accumulated depreciation and amortization	1,740.6	1,665.1
Total Property and Equipment - Net	3,547.4	3,401.5
Fuel Hedge Contracts	39.3	70.2
Other Assets	138.5	127.8
Total Assets	5,423.6	5,195.0
Current Liabilities
Accounts payable	110.8	103.6
Accrued aircraft rent	9.7	31.6
Accrued wages, vacation and payroll taxes	134.7	163.8
Other accrued liabilities	558.5	513.3
Air traffic liability	667.2	489.4
Current portion of long-term debt	183.4	207.9
Total Current Liabilities	1,664.3	1,509.6
Long-Term Debt, Net of Current Portion	957.1	1,099.0
Other Liabilities and Credits
Deferred income taxes	447.5	362.9
Deferred revenue	414.0	410.2
Obligation for pension and postretirement medical benefits	452.9	463.4
Other liabilities	204.8	176.7
Other Liabilities and Credits Totals	1,519.2	1,413.2
Commitments and Contingencies
Shareholders' Equity
Preferred stock, $1 par value Authorized: 5,000,000 shares, none issued or outstanding	0	0
Common stock, $1 par value Authorized: 100,000,000 shares, Issued: 2012 - 70,723,900 shares; 2011 - 75,733,044 shares	70.7	37.9
Capital in excess of par value	674.2	840.0
Treasury stock (common), at cost: 2012 - 0 shares; 2011 - 4,783,494 shares	0	(125.3)
Accumulated other comprehensive loss	(380.8)	(390.0)
Retained earnings	918.9	810.6
Shareholders' Equity Total	1,283.0	1,173.2
Total Liabilities and Shareholders' Equity	$ 5,423.6	$ 5,195.0

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COMMITMENTS (DETAILS) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012 carriers	Jun. 30, 2011	Jun. 30, 2012 carriers	Jun. 30, 2011
Unrecorded Unconditional Purchase Obligation, Fiscal Year Maturity [Abstract]
Rent Expense	$ 67.9	$ 69.4	$ 137.9	$ 138.5
Airline, Capacity Purchase Arrangements, Carriers	3		3
Airline, Capacity Purchase Arrangements, Percent	100.00%		100.00%
Aircraft Commitments [Member]
Unrecorded Unconditional Purchase Obligation, Fiscal Year Maturity [Abstract]
Remainder of 2012	181.8		181.8
2013	333.2		333.2
2014	194.6		194.6
2015	48.0		48.0
2016	18.4		18.4
Thereafter	36.8		36.8
Total	812.8		812.8
Capacity Purchase Agreements[Member]
Unrecorded Unconditional Purchase Obligation, Fiscal Year Maturity [Abstract]
Remainder of 2012	9.7		9.7
2013	17.4		17.4
2014	17.7		17.7
2015	18.0		18.0
2016	18.3		18.3
Thereafter	26.5		26.5
Total	107.6		107.6
Engine Maintenance [Member]
Unrecorded Unconditional Purchase Obligation, Fiscal Year Maturity [Abstract]
Remainder of 2012	20.9		20.9
2013	31.9		31.9
2014	26.4		26.4
2015	10.1		10.1
2016	0		0
Thereafter	0		0
Total	89.3		89.3
Aircraft Leases [Member]
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
Remainder of 2012	41.8		41.8
2013	141.6		141.6
2014	126.1		126.1
2015	104.4		104.4
2016	81.9		81.9
Thereafter	130.7		130.7
Total	626.5		626.5
Unrecorded Unconditional Purchase Obligation, Fiscal Year Maturity [Abstract]
Operating Leases, Number of Units (in Aircraft)	63		63
Facility Leases [Member]
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
Remainder of 2012	31.8		31.8
2013	42.5		42.5
2014	38.5		38.5
2015	27.0		27.0
2016	17.2		17.2
Thereafter	137.9		137.9
Total	294.9		294.9
Assets Leased to Others [Member]
Unrecorded Unconditional Purchase Obligation, Fiscal Year Maturity [Abstract]
Operating Leases, Number of Units (in Aircraft)	14		14
B737 [Member]
Unrecorded Unconditional Purchase Obligation, Fiscal Year Maturity [Abstract]
Option to Purchase Additional (in Aircraft)	39		39
B737-700 [Member]
Unrecorded Unconditional Purchase Obligation, Fiscal Year Maturity [Abstract]
Sale Leaseback Transaction, Deferred Gain, Net	$ 3.2		$ 3.2
B737-700 [Member] | Aircraft Leases [Member]
Unrecorded Unconditional Purchase Obligation, Fiscal Year Maturity [Abstract]
Sale Leaseback Leases, Number of Units (in Aircraft)	3		3
B737-800 [Member]
Unrecorded Unconditional Purchase Obligation, Fiscal Year Maturity [Abstract]
Operating Leases, Number of Units (in Aircraft)	6.0		6.0
Commited to Purchase (in Aircraft)	3		3
Number of Aircraft Purchased	1		1
B737-900ER [Member]
Unrecorded Unconditional Purchase Obligation, Fiscal Year Maturity [Abstract]
Commited to Purchase (in Aircraft)	22		22
Q400 [Member]
Unrecorded Unconditional Purchase Obligation, Fiscal Year Maturity [Abstract]
Number to be Aircraft Sold	2		2
Option to Purchase Additional (in Aircraft)	10		10
Number of Aircraft Purchased	2		2

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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Document Period End Date	Jun. 30, 2012
Cash flows from operating activities:
Net Income	$ 108.3	$ 103.0
Adjustments to reconcile net income to net cash provided by operating activities:
Fleet transition expenses	0	36.9
Depreciation and amortization	129.5	122.0
Stock-based compensation and other	5.5	7.3
Changes in certain assets and liabilities:
Changes in fair values of open fuel hedge contracts	45.3	(25.0)
Changes in deferred income taxes	57.5	57.8
Increase in air traffic liability	177.8	172.1
Increase (decrease) in deferred revenue	3.8	(16.8)
Increase in other long-term liabilities	4.9	53.8
Pension contribution	(23.6)	(22.2)
Other - net	(53.3)	(120.2)
Net cash provided by operating activities	455.7	368.7
Property and equipment additions:
Aircraft and aircraft purchase deposits	(228.4)	(214.8)
Other flight equipment	(6.7)	(11.1)
Other property and equipment	(19.7)	(15.2)
Total property and equipment additions	(254.8)	(241.1)
Assets constructed for others (Terminal 6 at LAX)	(50.0)	(44.6)
Purchases of marketable securities	(537.2)	(427.7)
Sales and maturities of marketable securities	430.4	459.0
Proceeds from disposition of assets and changes in restricted deposits	0.9	12.5
Net cash used in investing activities	(410.7)	(241.9)
Cash flows from financing activities:
Long-term debt payments	(165.4)	(125.4)
Proceeds from sale-leaseback transactions	49.3	0
Common stock repurchases	(26.3)	(33.3)
Proceeds and tax benefit from issuance of common stock	14.0	14.9
Other financing activities	16.6	(5.5)
Net cash used in financing activities	(111.8)	(149.3)
Net decrease in cash and cash equivalents	(66.8)	(22.5)
Cash and cash equivalents at beginning of year	102.2	89.5
Cash and cash equivalents at end of the period	35.4	67.0
Cash paid (refunded) during the period for:
Interest (net of amount capitalized)	24.6	39.7
Income taxes	(2.5)	0.1
Non-cash transactions:
Assets constructed related to Terminal 6 at LAX	$ 25.8	$ 0

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DERIVATIVE INSTRUMENTS - INCOME STATEMENT (DETAILS) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Derivative Instruments Not Designated as Hedges [Member] | Fuel hedge contracts [Member] | Gains (losses) recognized in aircraft fuel expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (losses) recognized in income	$ (81.4)	$ (54.4)	$ (62.9)	$ 40.1
Cash Flow Hedging [Member] | Derivative Instruments Designated as Hedges [Member] | Interest rate swaps agreements [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Losses Recognized in Other Comprehensive Income	(7.8)	(4.9)	(6.1)	(4.2)
Cash Flow Hedging [Member] | Derivative Instruments Designated as Hedges [Member] | Interest rate swaps agreements [Member] | Gains (losses) recognized in aircraft rent [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (losses) recognized in income	$ (1.4)	$ (1.6)	$ (2.9)	$ (3.1)

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DERIVATIVE INSTRUMENTS (TABLES)

6 Months Ended

Jun. 30, 2012

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]

Fair values of derivative instruments on the consolidated balance sheet (in millions):

	June 30, 2012			December 31, 2011
Derivative Instruments Not Designated as Hedges
Fuel hedge contracts
Fuel hedge contracts, current assets	$	22.0		$	46.7
Fuel hedge contracts, noncurrent assets	39.3			70.2
Fuel hedge contracts, current liabilities	—			(10.3		)
Derivative Instruments Designated as Hedges
Interest rate swaps
Other accrued liabilities	(5.7		)	(5.2		)
Other liabilities	(26.3		)	(23.6		)
Losses in Accumulated Other Comprehensive Loss (AOCL)	(32.0		)	(28.8		)

Schedule of Derivative Instruments, Gain (Loss) in Statement of Financial Performance [Table Text Block]

Pretax effect of derivative instruments on earnings (in millions):

	Three Months Ended June 30,						Six Months Ended June 30,
	2012			2011			2012			2011
Derivative Instruments Not Designated as Hedges
Fuel hedge contracts
Gains (losses) recognized in aircraft fuel expense	$	(81.4	)	$	(54.4	)	$	(62.9	)	$	40.1
Derivative Instruments Designated as Hedges
Interest rate swaps
Losses recognized in aircraft rent	(1.4		)	(1.6		)	(2.9		)	(3.1		)
Losses recognized in Other Comprehensive Income (OCI)	(7.8		)	(4.9		)	(6.1		)	(4.2		)

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DERIVATIVE INSTRUMENTS - FAIR VALUE OF HEDGE POSITIONS (DETAILS) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Derivative [Line Items]
Net cash received (paid) to for new positions and settlements	$ (11.1)	$ 9.6	$ (17.5)	$ 15.0
B737-800 [Member]
Derivative [Line Items]
Operating Leases, Number of Units (in Aircraft)	6.0		6.0
Not Designated as Hedging Instrument [Member] | Fuel hedge contracts [Member]
Derivative [Line Items]
Fuel hedge contracts outstanding (in barrels)	10,300,000		10,300,000

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ASSETS CONSTRUCTED FOR OTHERS (TERMINAL 6 AT LAX) ASSETS CONSTRUCTED FOR OTHERS (TERMINAL 6 AT LAX) (Tables)

6 Months Ended

Jun. 30, 2012

ASSETS CONSTRUCTED FOR OTHERS (TERMINAL 6 AT LAX) [Abstract]

Schedule of Sale Leaseback Transactions [Table Text Block]

	June 30, 2012		December 31, 2011
Proprietary assets of T6 at LAX	$	16.3	$	8.7
Assets constructed for others (T6 at LAX)	219.2		143.4
Other property and equipment	$	235.5	$	152.1
Other liabilities	$	46.3	$	17.7

XML

GENERAL AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

6 Months Ended

Jun. 30, 2012

Accounting Policies [Abstract]

GENERAL AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

GENERAL AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Organization and Basis of Presentation

The interim condensed consolidated financial statements include the accounts of Alaska Air Group, Inc. (Air Group or the Company) and its subsidiaries, Alaska Airlines, Inc. (Alaska) and Horizon Air Industries, Inc. (Horizon), through which the Company conducts substantially all of its operations. All intercompany balances and transactions have been eliminated. These financial statements have been prepared in accordance with accounting principles generally accepted in the United States (“GAAP”) for interim financial information. Consistent with these requirements, this Form 10-Q does not include all the information required by GAAP for complete financial statements. As a result, this Form 10-Q should be read in conjunction with the Consolidated Financial Statements and accompanying Notes in the Form 10-K for the year ended December 31, 2011. In the opinion of management, all adjustments have been made that are necessary to present fairly the Company’s financial position as of June 30, 2012, as well as the results of operations for the three and six months ended June 30, 2012 and 2011. The adjustments made were of a normal recurring nature.

In preparing these statements, the Company is required to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent liabilities, as well as the reported amounts of revenues and expenses. Due to seasonal variations in the demand for air travel, the volatility of aircraft fuel prices, changes in global economic conditions and other factors, operating results for the three and six months ended June 30, 2012 are not necessarily indicative of operating results for the entire year.

Reclassifications

Certain reclassifications have been made to conform the prior-year data to the current format. During the second quarter of 2012, the Company changed the classification of ancillary revenues, such as checked-bag fees, ticket change fees, and others, from "Passenger revenue" to "Other-net" revenue to enhance comparability of passenger revenue among peers in the industry. The Company has reclassified ancillary revenues in the current period and all prior periods, with the reclassification having no impact on total revenue for any of the respective periods. The table below shows operating revenues originally reported in the Form 10-Q for the three and six months ended June 30, 2011 and the effect of the reclassification on the condensed consolidated statement of operations (in millions):

	Three Months Ended June 30, 2011				Six Months Ended June 30, 2011
	As Reclassified		Reported		As Reclassified		Reported
Operating Revenues
Passenger
Mainline	$	774.2	$	819.9	$	1,433.5	$	1,522.3
Regional	179.0		194.3		340.6		370.8
Total passenger revenue	953.2		1,014.2		1,774.1		1,893.1
Freight and mail	29.1		29.1		54.0		54.0
Other - net	127.9		66.9		247.3		128.3
Total Operating Revenues	$	1,110.2	$	1,110.2	$	2,075.4	$	2,075.4

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CONDENSED CONSOLIDATED BALANCE SHEETS (PARENTHETICALS) (USD $)	Jun. 30, 2012	Dec. 31, 2011
Stockholders' Equity:
Preferred Stock, par value	$ 1	$ 1
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 1	$ 1
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	70,723,900	75,733,044
Treasury Stock (common) at cost	0	4,783,494

XML

SHAREHOLDER'S EQUITY

6 Months Ended

Jun. 30, 2012

Equity [Abstract]

SHAREHOLDER'S EQUITY

SHAREHOLDERS' EQUITY

Common Stock Split

On February 15, 2012, the Board of Directors declared a two-for-one split of the Company's common stock to be accomplished by means of a stock distribution. The additional shares were distributed on March 16, 2012, to the shareholders of record on March 2, 2012. The stock split increased the Company's outstanding shares from approximately 35.5 million shares as of December 31, 2011 to 70.7 million shares as of June 30, 2012. Historical outstanding shares were recast upon the distribution.

Common Stock Repurchase

In February 2012, the Board of Directors authorized a $50 million share repurchase program, which expires in February 2013. In June 2011, the Board of Directors authorized a $50 million share repurchase program, which was completed in January 2012. In June 2010, the Board of Directors authorized a $50 million share repurchase program, which was completed in April 2011.

Share repurchase activity (in millions, except share amounts):

	Three Months Ended June 30,						Six Months Ended June 30,
	2012			2011			2012			2011
	Shares	Amount		Shares	Amount		Shares	Amount		Shares	Amount
2012 Repurchase Program	506,000	$	17.5	—	$	—	709,000	$	24.6	—	$	—
2011 Repurchase Program	—	—		63,000	2.1		46,340	1.7		63,000	2.1
2010 Repurchase Program	—	—		155,600	4.9		—	—		1,023,600	31.2
	506,000	$	17.5	218,600	$	7.0	755,340	$	26.3	1,086,600	$	33.3

Retirement of Treasury Shares

In February 2012, the Company retired 4,829,834 common shares that had been held in treasury.  This action did not impact the total number of common shares outstanding.

Earnings Per Share

Diluted EPS is calculated by dividing net income by the average common shares outstanding plus additional common shares that would have been outstanding assuming the exercise of in-the-money stock options and restricted stock units, using the treasury-stock method. For the three months ended June 30, 2012 and 2011, 0.2 million and 0.1 million stock options, respectively, were excluded from the calculation of diluted EPS because they were antidilutive. Antidilutive shares for the six month ended June 30, 2012 and 2011 were 0.2 million and 0.2 million, respectively.

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DOCUMENT AND ENTITY INFORMATION	6 Months Ended
	Jun. 30, 2012	Jul. 31, 2012
Entity Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2012
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2012
Entity Registrant Name	ALASKA AIR GROUP, INC.
Entity Central Index Key	0000766421
Entity Filer Category	Large Accelerated Filer
Document Fiscal Period Focus	Q1
Entity Common Stock, Shares Outstanding		70,494,808

XML

FLEET TRANSITION EXPENSES

6 Months Ended

Jun. 30, 2012

Restructuring and Related Activities [Abstract]

RESTRUCTURING RELATED EXPENSES

FLEET TRANSITION EXPENSES

Fleet transition expenses included in the consolidated statements of operations (in millions):

	Three Months Ended June 30,				Six Months Ended June 30,
	2012		2011		2012		2011
Horizon Fleet Transition - CRJ-700	$	—	$	20.8	$	—	$	30.9
Horizon Fleet Transition - Q200	—		6.0		—		6.0
Total	$	—	$	26.8	$	—	$	36.9

In 2011, Horizon completed its transition to an all-Q400 fleet. During the first six months of 2011, Horizon subleased the final 13 CRJ-700 aircraft to a third-party carrier.

Horizon also had 16 Q200 aircraft subleased to a third-party carrier, which included a liability related to the estimated sublease loss which had been recorded in previous periods. The Company evaluated the loss in the second quarter of 2011 and determined the ultimate loss would likely be higher than the original estimate and recorded an additional charge.

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CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Millions, except Share data in Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Operating Revenues
Passenger, Mainline	$ 862.7	$ 774.2	$ 1,586.1	$ 1,433.5
Passenger, Regional	187.6	179.0	360.4	340.6
Total passenger revenue	1,050.3	953.2	1,946.5	1,774.1
Freight and mail	30.6	29.1	55.0	54.0
Other - net	132.3	127.9	251.0	247.3
Total Operating Revenues	1,213.2	1,110.2	2,252.5	2,075.4
Operating Expenses
Wages and benefits	258.9	242.8	515.5	492.1
Variable incentive pay	21.5	17.9	37.5	34.3
Aircraft fuel, including hedging gains and losses	431.8	397.5	750.6	592.0
Aircraft maintenance	54.5	49.1	104.6	102.4
Aircraft rent	29.0	29.0	57.0	59.5
Landing fees and other rentals	60.5	59.9	123.0	117.8
Contracted services	50.5	46.6	98.2	90.1
Selling expenses	44.2	45.8	85.3	85.6
Depreciation and amortization	65.8	61.7	129.5	122.0
Food and beverage service	19.6	17.1	37.4	32.2
Other	61.1	58.2	125.7	118.9
Fleet transition expenses	0	26.8	0	36.9
Total Operating Expenses	1,097.4	1,052.4	2,064.3	1,883.8
Operating Income	115.8	57.8	188.2	191.6
Nonoperating income (expense)
Interest income	5.1	6.3	10.0	13.9
Interest expense	(17.2)	(20.0)	(33.8)	(43.4)
Interest capitalized	3.5	1.6	8.0	3.4
Other - net	1.9	1.3	3.3	2.2
Nonoperating Income (Expense) Total	(6.7)	(10.8)	(12.5)	(23.9)
Income before income tax	109.1	47.0	175.7	167.7
Income tax expense	41.6	18.2	67.4	64.7
Net Income	$ 67.5	$ 28.8	$ 108.3	$ 103.0
Basic Earnings Per Share	$ 0.95	$ 0.40	$ 1.52	$ 1.43
Diluted Earnings Per Share	$ 0.93	$ 0.39	$ 1.50	$ 1.40
Shares used for computation:
Basic	70,996	71,965	71,069	71,977
Diluted	72,200	73,473	72,325	73,551

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MILEAGE PLAN

6 Months Ended

Jun. 30, 2012

MILEAGE PLAN [Abstract]

Frequent Flyer Plan Disclosure [Text Block]

MILEAGE PLAN

Alaska's Mileage Plan liabilities and deferrals are included in the consolidated balance sheets (in millions) as follows:

	June 30, 2012		December 31, 2011
Current Liabilities:
Other accrued liabilities	$	289.1	$	271.4
Other Liabilities and Credits:
Deferred revenue	397.8		392.2
Other liabilities	17.2		16.9
Total	$	704.1	$	680.5

Alaska's Mileage Plan revenue is included in the consolidated statements of operations (in millions) as follows:

	Three Months Ended June 30,				Six Months Ended June 30,
	2012		2011		2012		2011
Passenger revenues	$	48.2	$	54.2	$	90.8	$	104.5
Other-net revenues	55.2		51.6		102.7		97.2
Total Mileage Plan revenues	$	103.4	$	105.8	$	193.5	$	201.7

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ASSETS CONSTRUCTED FOR OTHERS (TERMINAL 6 AT LAX)

6 Months Ended

Jun. 30, 2012

Leases [Abstract]

ASSETS CONSTRUCTED FOR OTHERS (TERMINAL 6 AT LAX)

ASSETS CONSTRUCTED FOR OTHERS - TERMINAL 6 AT LOS ANGELES INTERNATIONAL AIRPORTS (LAX)

In March 2012, the Company placed into service assets constructed for others (Terminal 6 at LAX), including a new baggage system, additional gates, new common use systems, expansion of security screening checkpoints, and a new ticket lobby, all of which were constructed for the City of Los Angeles and Los Angeles World Airports (LAWA). Additionally, the Company placed into service proprietary renovations in the ticketing lobby and at the new gates included in Terminal 6. The majority of the assets constructed for LAX will be acquired by the City of Los Angeles and LAWA.

For accounting and financial reporting purposes, the Company is considered to be the owners of the project during construction and will not be able to qualify for sale and leaseback accounting when the non-proprietary assets are sold to the City of Los Angeles due to the Company's continuing involvement with the project. As a result, all of the costs incurred to fund the project are included in "Other property and equipment" and all amounts that have been and will be reimbursed will be in "Other liabilities" on the balance sheet. These assets and liabilities are summarized in the table below (in millions):

	June 30, 2012		December 31, 2011
Proprietary assets of T6 at LAX	$	16.3	$	8.7
Assets constructed for others (T6 at LAX)	219.2		143.4
Other property and equipment	$	235.5	$	152.1
Other liabilities	$	46.3	$	17.7

Included in the asset balances above is capitalized interest of $6.0 million and $4.5 million at June 30, 2012 and December 31, 2011, respectively.

The assets will be depreciated over the life of the lease based on the straight-line method, while the liability will amortize using the effective interest method based on the lease rental payments. Because the Company will only operate a small portion of the gates in the new terminal, the asset and liability will depreciate and amortize to an estimated fair value at the end of the lease term, at which time we may derecognize our obligation or we may extend our lease term.

Future minimum payments related to the Terminal 6 lease are included in facility leases described in Note 10.

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FAIR VALUE MEASUREMENTS (TABLES)

6 Months Ended

Jun. 30, 2012

Fair Value Disclosures [Abstract]

Fair Value, Measurement Inputs, Disclosure [Table Text Block]

Fair values of financial instruments on the consolidated balance sheet (in millions):

June 30, 2012	Level 1		Level 2			Total
Assets
Marketable securities
U.S. government and agency securities	$	368.8	$	—		$	368.8
Foreign government bonds	—		42.3			42.3
Asset-back securities	—		90.7			90.7
Mortgage-back securities	—		110.4			110.4
Corporate notes and bonds	—		522.8			522.8
Municipal securities	—		15.0			15.0
Derivative instruments
Fuel hedge contracts	—		61.3			61.3
Liabilities
Derivative instruments
Interest rate swap agreements	—		(32.0		)	(32.0		)

December 31, 2011	Level 1		Level 2			Total
Assets
Marketable securities
U.S. government and agency securities	$	295.9	$	—		$	295.9
Foreign government bonds	—		25.4			25.4
Asset-back securities	—		58.0			58.0
Mortgage-back securities	—		124.9			124.9
Corporate notes and bonds	—		522.6			522.6
Municipal securities	—		11.9			11.9
Derivative instruments
Fuel hedge contracts	—		116.9			116.9
Liabilities
Derivative instruments
Fuel hedge contracts	—		(10.3		)	(10.3		)
Interest rate swap agreements	—		(28.8		)	(28.8		)

Fair Value, by Balance Sheet Grouping [Table Text Block]

Fixed-rate debt that is not carried at fair value on the consolidated balance sheet and the estimated fair value of long-term fixed-rate debt (in millions):

	June 30, 2012		December 31, 2011
Carrying amount	$	933.3	$	1,002.5
Fair value	1,016.3		1,075.8

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OPERATING SEGMENT INFORMATION

6 Months Ended

Jun. 30, 2012

Segment Reporting [Abstract]

Operating Segment Information

OPERATING SEGMENT INFORMATION

Management views the business in three operating segments.

Alaska Mainline - The Boeing 737 part of Alaska's business with average stage lengths greater than 1,000 miles.

Alaska Regional - Alaska's shorter distance network. In this segment, we record actual on-board passenger revenue, less costs such as fuel, distribution costs, and payments made to Horizon, SkyWest and PenAir under CPAs.

Horizon - Horizon operates regional aircraft. All of Horizon's capacity is sold to Alaska under a CPA.   Expenses include those typically borne by regional airlines such as crew costs, ownership costs, and maintenance costs.

The following table reports “Air Group adjusted,” which is not a measure determined in accordance with GAAP. The Company's chief operating decision-makers and others in management use this measure to evaluate operational performance and determine resource allocations. Adjustments are further explained below in reconciling to consolidated GAAP results. All inter-company revenues and expenses between Alaska and Horizon are eliminated in consolidation.

Operating segment information is as follows (in millions):

	Three Months Ended June 30, 2012
	Alaska
	Mainline			Regional		Horizon			Consolidating			Air Group Adjusted(a)			Special Items			Consolidated
Operating revenues
Passenger
Mainline	$	862.7		$	—	$	—		$	—		$	862.7		$	—		$	862.7
Regional	—			187.6		—			—			187.6			—			187.6
Total passenger revenues	862.7			187.6		—			—			1,050.3			—			1,050.3
CPA revenues	—			—		89.2			(89.2		)	—			—			—
Freight and mail	29.5			1.1		—			—			30.6			—			30.6
Other-net	115.4			15.1		1.8			—			132.3			—			132.3
Total operating revenues	1,007.6			203.8		91.0			(89.2		)	1,213.2			—			1,213.2
Operating expenses
Operating expenses, excluding fuel	532.2			139.0		83.1			(88.7		)	665.6			—			665.6
Economic fuel(c)	316.7			45.5		—			—			362.2			69.6			431.8
Total operating expenses	848.9			184.5		83.1			(88.7		)	1,027.8			69.6			1,097.4
Nonoperating income (expense)
Interest income	4.4			—		—			0.7			5.1			—			5.1
Interest expense	(12.7		)	—		(4.1		)	(0.4		)	(17.2		)	—			(17.2		)
Other	5.1			—		0.4			(0.1		)	5.4			—			5.4
	(3.2		)	—		(3.7		)	0.2			(6.7		)	—			(6.7		)
Income (loss) before income tax	$	155.5		$	19.3	$	4.2		$	(0.3	)	$	178.7		$	(69.6	)	$	109.1

	Three Months Ended June 30, 2011
	Alaska
	Mainline			Regional		Horizon			Consolidating			Air Group Adjusted(a)			Special Items			Consolidated
Operating revenues
Passenger
Mainline	$	774.2		$	—	$	—		$	—		$	774.2		$	—		$	774.2
Regional	—			179.0		—			—			179.0			—			179.0
Total passenger revenues	774.2			179.0		—			—			953.2			—			953.2
CPA revenues	—			—		93.5			(93.5		)	—			—			—
Freight and mail	28.0			1.0		0.1			—			29.1			—			29.1
Other-net	110.7			15.4		1.8			—			127.9			—			127.9
Total operating revenues	912.9			195.4		95.4			(93.5		)	1,110.2			—			1,110.2
Operating expenses
Operating expenses, excluding fuel(b)	498.4			138.1		83.8			(92.2		)	628.1			26.8			654.9
Economic fuel(c)	285.2			41.4		—			—			326.6			70.9			397.5
Total operating expenses	783.6			179.5		83.8			(92.2		)	954.7			97.7			1,052.4
Nonoperating income (expense)
Interest income	7.1			—		—			(0.8		)	6.3			—			6.3
Interest expense	(16.3		)	—		(4.4		)	0.7			(20.0		)	—			(20.0		)
Other	2.3			—		0.2			0.4			2.9			—			2.9
	(6.9		)	—		(4.2		)	0.3			(10.8		)	—			(10.8		)
Income (loss) before income tax	$	122.4		$	15.9	$	7.4		$	(1.0	)	$	144.7		$	(97.7	)	$	47.0

	Six Months Ended June 30, 2012
	Alaska
	Mainline			Regional		Horizon			Consolidating			Air Group Adjusted(a)			Special Items			Consolidated
Operating revenues
Passenger
Mainline	$	1,586.1		$	—	$	—		$	—		$	1,586.1		$	—		$	1,586.1
Regional	—			360.4		—			—			360.4			—			360.4
Total passenger revenues	1,586.1			360.4		—			—			1,946.5			—			1,946.5
CPA revenues	—			—		176.2			(176.2		)	—			—			—
Freight and mail	53.0			2.0		—			—			55.0			—			55.0
Other-net	218.2			29.1		3.7			—			251.0			—			251.0
Total operating revenues	1,857.3			391.5		179.9			(176.2		)	2,252.5			—			2,252.5
Operating expenses
Operating expenses, excluding fuel	1,051.8			275.8		161.4			(175.3		)	1,313.7			—			1,313.7
Economic fuel(c)	611.1			89.8		—			—			700.9			49.7			750.6
Total operating expenses	1,662.9			365.6		161.4			(175.3		)	2,014.6			49.7			2,064.3
Nonoperating income (expense)
Interest income	9.3			—		—			0.7			10.0			—			10.0
Interest expense	(25.3		)	—		(8.1		)	(0.4		)	(33.8		)	—			(33.8		)
Other	10.4			—		0.8			0.1			11.3			—			11.3
	(5.6		)	—		(7.3		)	0.4			(12.5		)	—			(12.5		)
Income (loss) before income tax	$	188.8		$	25.9	$	11.2		$	(0.5	)	$	225.4		$	(49.7	)	$	175.7

	Six Months Ended June 30, 2011
	Alaska
	Mainline			Regional		Horizon			Consolidating			Air Group Adjusted(a)			Special Items			Consolidated
Operating revenues
Passenger
Mainline	$	1,433.5		$	—	$	—		$	—		$	1,433.5		$	—		$	1,433.5
Regional	—			340.6		—			—			340.6			—			340.6
Total passenger revenues	1,433.5			340.6		—			—			1,774.1			—			1,774.1
CPA revenues	—			—		188.1			(188.1		)	—			—			—
Freight and mail	51.9			2.0		0.1			—			54.0			—			54.0
Other-net	212.7			30.4		4.2			—			247.3			—			247.3
Total operating revenues	1,698.1			373.0		192.4			(188.1		)	2,075.4			—			2,075.4
Operating expenses
Operating expenses, excluding fuel(b)	996.1			271.0		174.0			(186.2		)	1,254.9			36.9			1,291.8
Economic fuel(c)	523.6			79.5		—			—			603.1			(11.1		)	592.0
Total operating expenses	1,519.7			350.5		174.0			(186.2		)	1,858.0			25.8			1,883.8
Nonoperating income (expense)
Interest income	15.8			—		—			(1.9		)	13.9			—			13.9
Interest expense	(36.0		)	—		(9.1		)	1.7			(43.4		)	—			(43.4		)
Other	4.4			—		1.0			0.2			5.6			—			5.6
	(15.8		)	—		(8.1		)	—			(23.9		)	—			(23.9		)
Income (loss) before income tax	$	162.6		$	22.5	$	10.3		$	(1.9	)	$	193.5		$	(25.8	)	$	167.7

^(a)  The adjusted column represents the financial information that is reviewed by management to assess performance of operations and determine capital allocations and does not include certain charges.

^(b)  Refer to Note 12 for a summary of special charges.

^(c)  Represents adjustments to reflect the timing of gain or loss recognition resulting from mark-to-market fuel-hedge accounting.

Total assets were as follows (in millions):

	June 30, 2012			December 31, 2011
Alaska(a)	$	4,994.9		$	4,803.3
Horizon	864.1			846.5
Parent company	1,589.4			1,583.5
Elimination of inter-company accounts	(2,024.8		)	(2,038.3		)
Consolidated	$	5,423.6		$	5,195.0

^(a)  There are no assets associated with purchased capacity flying at Alaska.

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EMPLOYEE BENEFIT PLANS

6 Months Ended

Jun. 30, 2012

Compensation and Retirement Disclosure [Abstract]

EMPLOYEE BENEFIT PLANS

EMPLOYEE BENEFIT PLANS

Net periodic benefit costs recognized included the following components for the three months ended June 30 (in millions): 

	Qualified						Nonqualified				Postretirement Medical
	2012			2011			2012		2011		2012			2011
Service cost	$	9.5		$	9.0		$	0.2	$	0.2	$	1.3		$	1.5
Interest cost	18.3			18.3			0.5		0.5		1.3			1.8
Expected return on assets	(23.2		)	(22.1		)	—		—		—			—
Amortization of prior service cost	(0.3		)	(0.2		)	—		—		0.2			0.1
Recognized actuarial loss	9.9			6.1			0.2		0.2		(0.2		)	0.3
Net periodic benefit costs	$	14.2		$	11.1		$	0.9	$	0.9	$	2.6		$	3.7

Net periodic benefit costs recognized included the following components for the six months ended June 30 (in millions): 

	Qualified						Nonqualified				Postretirement Medical
	2012			2011			2012		2011		2012			2011
Service cost	$	19.1		$	18.0		$	0.4	$	0.4	$	2.5		$	3.0
Interest cost	36.5			36.6			1.0		1.1		2.7			3.6
Expected return on assets	(46.5		)	(44.2		)	—		—		—			—
Amortization of prior service cost	(0.5		)	(0.4		)	—		—		0.3			0.2
Recognized actuarial loss	19.8			12.2			0.4		0.3		(0.3		)	0.6
Net periodic benefit costs	$	28.4		$	22.2		$	1.8	$	1.8	$	5.2		$	7.4

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LONG-TERM DEBT

6 Months Ended

Jun. 30, 2012

Debt Disclosure [Abstract]

LONG-TERM DEBT

LONG-TERM DEBT

Long-term debt obligations on the consolidated balance sheet (in millions):

	June 30, 2012			December 31, 2011
Fixed-rate notes payable due through 2024	$	933.3		$	1,002.5
Variable-rate notes payable due through 2023	207.2			304.4
Long-term debt	1,140.5			1,306.9
Less current portion	183.4			207.9
	$	957.1		$	1,099.0
Weighted-average fixed-interest rate	5.9		%	5.8		%
Weighted-average variable-interest rate	2.0		%	1.9		%

All of the Company’s borrowings were secured by aircraft, but only one aircraft debt agreement secured by an aircraft has a loan-to-value covenant. As of June 30, 2012, the Company was in compliance with this covenant and expects to retire this debt by December 31, 2012.

During the six months ended June 30, 2012, the Company made scheduled debt payments of $62.9 million and prepaid the full debt balance on seven outstanding aircraft debt agreements of $102.5 million.

At June 30, 2012, long-term debt principal payments for the next five years and thereafter are as follows (in millions):

	Total
Remainder of 2012	$	108.6
2013	160.9
2014	117.1
2015	113.4
2016	110.6
Thereafter	529.9
Total principal payments	$	1,140.5

Bank Line of Credit

The Company has two $100 million credit facilities. Both facilities have variable interest rates based on LIBOR plus a specified margin. Borrowings on one of the $100 million facilities, which expires in March 2013, are secured by aircraft. Borrowings on the other $100 million facility, which expires in March 2016, are secured by certain accounts receivable, spare engines, spare parts and ground service equipment. The Company has no immediate plans to borrow using either of these facilities. These facilities have a requirement to maintain a minimum unrestricted cash and marketable securities balance of $500 million. The Company is in compliance with this covenant at June 30, 2012.

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INCOME TAXES

6 Months Ended

Jun. 30, 2012

Income Tax Disclosure [Abstract]

INCOME TAXES

INCOME TAXES

Deferred income taxes reflect the impact of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and such amounts for tax purposes. Primarily due to differences in depreciation rates for federal income tax purposes and for financial reporting purposes, the Company has generated a net deferred tax liability. As a result of certain realization requirements of ASC 718, Compensation - Stock Compensation, deferred assets and liabilities do not include certain deferred tax assets that arose directly from the tax deductions related to equity compensation in excess of compensation recognized for financial reporting. Those deferred tax assets include $4.9 million and $10.3 million of loss carryforwards at June 30, 2012 and December 31, 2011, respectively, in which additional-paid-in-capital will be increased if and when such deferred tax assets are ultimately realized. The Company uses ASC 740 ordering for purposes of determining when excess tax benefits have been realized. During the second quarter of 2012, the Company recognized $9.7 million of previously unrecognized deferred tax assets related to the excess tax benefits of stock compensation, which decreased "Deferred income taxes" and increased "Capital in excess of par."

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COMMITMENTS

6 Months Ended

Jun. 30, 2012

Commitments and Contingencies Disclosure [Abstract]

COMMITMENTS

COMMITMENTS

Future minimum fixed payments for commitments (in millions):

June 30, 2012	Aircraft Leases		Facility Leases		Aircraft Commitments		Capacity Purchase Agreements		Engine Maintenance
Remainder of 2012	$	41.8	$	31.8	$	181.8	$	9.7	$	20.9
2013	141.6		42.5		333.2		17.4		31.9
2014	126.1		38.5		194.6		17.7		26.4
2015	104.4		27.0		48.0		18.0		10.1
2016	81.9		17.2		18.4		18.3		—
Thereafter	130.7		137.9		36.8		26.5		—
Total	$	626.5	$	294.9	$	812.8	$	107.6	$	89.3

Lease Commitments

The Company had lease contracts for 63 aircraft, which have remaining noncancelable lease terms ranging up to nine years at June 30, 2012. Of these aircraft, 14 are non-operating (i.e. not in our fleet) and subleased to third-party carriers. In May 2012, the Company entered into an agreement to sell and leaseback three Boeing 737-700 aircraft. The lease terms are less than two years and qualify as operating leases. The sale of the aircraft resulted in a gain of $3.2 million, which was deferred and will be amortized over the life of the leases to aircraft rent expense on the consolidated statement of operations. The majority of airport and terminal facilities are also leased. Rent expense was $67.9 million and $69.4 million for the three months ended June 30, 2012 and 2011, respectively, and $137.9 million and $138.5 million for the six months ended June 30, 2012 and 2011, respectively.

Aircraft Commitments

As of June 30, 2012, the Company is committed to purchasing three Boeing 737-800 aircraft and 22 Boeing 737-900ER aircraft, with deliveries in 2012 through 2015, and has options to purchase an additional 39 Boeing 737 aircraft. The Company also purchased one Boeing 737-800 and two Q400 aircraft in the second quarter of 2012. The Company is committed to selling two Q400 aircraft in 2012, and has options to purchase an additional 10 Q400 aircraft.

Capacity Purchase Agreements (CPAs)

At June 30, 2012, Alaska had CPAs with three carriers, including our wholly-owned subsidiary, Horizon. Horizon sells 100% of its capacity to Alaska under a CPA, which is eliminated upon consolidation. On May 14, 2011, SkyWest Airlines, Inc. (SkyWest) began flying certain routes under a CPA with Alaska. In addition, Alaska has a CPA with Peninsula Airways, Inc. (PenAir) to fly in the state of Alaska. Under these agreements, Alaska pays the third-party carriers an amount which is based on a determination of their cost of operating those flights and other factors. The costs paid by Alaska to Horizon are based on similar data and are intended to approximate market rates for those services. Future payments (excluding Horizon) are based on minimum levels of flying by the third-party carriers, which could differ materially due to variable payments based on actual levels of flying and certain costs associated with operating flights such as fuel.

Engine Maintenance

The Company had power-by-the-hour maintenance agreements for all Boeing 737 engines other than the Boeing 737-800 at June 30, 2012. These agreements transfer risk to third-party service providers and fix the amount the Company pays per flight hour in exchange for maintenance and repairs under a predefined maintenance program. Future payments are based on minimum flight hours. Accordingly, payments could differ materially based on actual flight hours.

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DERIVATIVE INSTRUMENTS - BALANCE SHEET CLASSIFICATION (DETAILS) (USD $) In Millions, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Derivatives, Fair Value [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax	$ 380.8	$ 390.0
Posted collateral	17.5	0.9
Fuel hedge contracts [Member] | Derivative Instruments Not Designated as Hedges [Member] | Fuel hedge contracts [Member]
Derivatives, Fair Value [Line Items]
Derivative Assets, Current	22.0	46.7
Derivative Liabilities, Current	0	(10.3)
Fuel hedge contracts [Member] | Derivative Instruments Not Designated as Hedges [Member] | Fuel hedge contracts, noncurrent assets [Member]
Derivatives, Fair Value [Line Items]
Derivative Assets, Noncurrent	39.3	70.2
Interest rate swaps agreements [Member] | Derivative Instruments Designated as Hedges [Member] | Other accrued liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative Liabilities, Current	(5.7)	(5.2)
Interest rate swaps agreements [Member] | Derivative Instruments Designated as Hedges [Member] | Other liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative Liabilities, Noncurrent	(26.3)	(23.6)
Interest rate swaps agreements [Member] | Derivative Instruments Designated as Hedges [Member] | Gains (losses) in AOCL [Member]
Derivatives, Fair Value [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax	(32.0)	(28.8)
Derivative Gain (Loss) in Accumulated Other Comprehensive Loss To Be Reclassified Within Next Twelve Months	$ 5.7

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OPERATING SEGMENT INFORMATION, ASSETS (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2012		Dec. 31, 2011
Total assets	$ 5,423.6		$ 5,195.0
Alaska Airlines [Member]
Total assets	4,994.9	[1]	4,803.3	[1]
Horizon [Member]
Total assets	864.1		846.5
Parent [Member]
Total assets	1,589.4		1,583.5
Intersegment Elimination [Member]
Total assets	$ (2,024.8)		$ (2,038.3)

[1] There are no assets associated with purchased capacity flying at Alaska.

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CASH, CASH EQUIVALENTS AND MARKETABLE SECURITIES (TABLES)

6 Months Ended

Jun. 30, 2012

Cash, Cash Equivalents, and Short-term Investments [Abstract]

Schedule of Cash, Cash Equivalents and Short-term Investments [Table Text Block]

Components for cash, cash equivalents and marketable securities (in millions):

June 30, 2012	Cost Basis		Unrealized Gains		Unrealized Losses			Fair Value
Cash	$	23.2	$	—	$	—		$	23.2
Commercial paper, money market funds and other securities	12.2		—		—			12.2
Cash and cash equivalents	35.4		—		—			35.4
U.S. government and agency securities	366.0		2.8		—			368.8
Foreign government bonds	41.4		0.9		—			42.3
Asset-back securities	90.3		0.4		—			90.7
Mortgage-back securities	109.6		0.9		(0.1		)	110.4
Corporate notes and bonds	516.8		6.5		(0.5		)	522.8
Municipal securities	14.9		0.1		—			15.0
Marketable securities	1,139.0		11.6		(0.6		)	1,150.0
Total	$	1,174.4	$	11.6	$	(0.6	)	$	1,185.4

December 31, 2011	Cost Basis		Unrealized Gains		Unrealized Losses			Fair Value
Cash	$	62.1	$	—	$	—		$	62.1
Money market funds	40.1		—		—			40.1
Cash and cash equivalents	102.2		—		—			102.2
U.S. government and agency securities	292.5		3.4		—			295.9
Foreign government bonds	24.9		0.5		—			25.4
Asset-back securities	58.2		0.1		(0.3		)	58.0
Mortgage-back securities	124.1		1.1		(0.3		)	124.9
Corporate notes and bonds	518.0		7.0		(2.4		)	522.6
Municipal securities	11.8		0.1		—			11.9
Marketable securities	1,029.5		12.2		(3.0		)	1,038.7
Total	$	1,131.7	$	12.2	$	(3.0	)	$	1,140.9

Schedule of Realized Gain (Loss) [Table Text Block]

Activity for marketable securities (in millions):  

	Three Months Ended June 30,				Six Months Ended June 30,
	2012		2011		2012		2011
Proceeds from sales and maturities	$	242.3	$	145.0	$	430.4	$	459.0
Gross realized gains	2.0		1.4		3.6		3.3
Gross realized losses	0.5		0.4		0.8		1.7
Other-than-temporary impairments on investments	—		—		0.3		—

Schedule of Unrealized Loss on Investments [Table Text Block]

Investments with continuous unrealized losses (in millions):

	Less than 12 months					Greater than 12 months
June 30, 2012	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses		Total Fair Value		Total Unrealized Losses
Mortgage-backed obligations	$	26.3	$	(0.1	)	$	—	$	—	$	26.3	$	(0.1	)
Corporate notes and bonds	106.3		(0.5		)	—		—		106.3		(0.5		)
Total	$	132.6	$	(0.6	)	$	—	$	—	$	132.6	$	(0.6	)

	Less than 12 months					Greater than 12 months
December 31, 2011	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Total Fair Value		Total Unrealized Losses
Asset-backed obligations	$	31.7	$	(0.1	)	$	1.1	$	(0.2	)	$	32.8	$	(0.3	)
Mortgage-backed obligations	35.1		(0.2		)	1.9		(0.1		)	37.0		(0.3		)
Corporate notes and bonds	137.4		(2.4		)	1.0		—			138.4		(2.4		)
Total	$	204.2	$	(2.7	)	$	4.0	$	(0.3	)	$	208.2	$	(3.0	)

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LONG-TERM DEBT (TABLES)

6 Months Ended

Jun. 30, 2012

Debt Disclosure [Abstract]

Schedule of Long-term Debt Instruments [Table Text Block]

Long-term debt obligations on the consolidated balance sheet (in millions):

	June 30, 2012			December 31, 2011
Fixed-rate notes payable due through 2024	$	933.3		$	1,002.5
Variable-rate notes payable due through 2023	207.2			304.4
Long-term debt	1,140.5			1,306.9
Less current portion	183.4			207.9
	$	957.1		$	1,099.0
Weighted-average fixed-interest rate	5.9		%	5.8		%
Weighted-average variable-interest rate	2.0		%	1.9		%

Schedule of Maturities of Long-term Debt [Table Text Block]

At June 30, 2012, long-term debt principal payments for the next five years and thereafter are as follows (in millions):

	Total
Remainder of 2012	$	108.6
2013	160.9
2014	117.1
2015	113.4
2016	110.6
Thereafter	529.9
Total principal payments	$	1,140.5

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FLEET TRANSITION EXPENSES (DETAILS) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Restructuring Cost and Reserve [Line Items]
Restructuring, Settlement and Impairment Provisions	$ 0	$ 26.8	$ 0	$ 36.9
Horizon Fleet Transition - CRJ-700 [Member]
Restructuring Cost and Reserve [Line Items]
Number of Aircraft Subleased				13
Restructuring, Settlement and Impairment Provisions	0	20.8	0	30.9
Horizon Fleet Transition - Q200 [Member]
Restructuring Cost and Reserve [Line Items]
Number of Aircraft Subleased				16
Restructuring, Settlement and Impairment Provisions	$ 0	$ 6.0	$ 0	$ 6.0

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LONG-TERM DEBT - SCHEDULE OF LONG-TERM DEBT (DETAILS) (USD $) In Millions, unless otherwise specified							6 Months Ended
	Jun. 30, 2012	Dec. 31, 2011	Jun. 30, 2012 Fixed-rate notes payable due through 2024 [Member]	Dec. 31, 2011 Fixed-rate notes payable due through 2024 [Member]	Jun. 30, 2012 Variable-rate notes payable due through 2023 [Member]	Dec. 31, 2011 Variable-rate notes payable due through 2023 [Member]	Jun. 30, 2012 Scheduled debt payments [Member]	Jun. 30, 2012 Debt prepayments [Member]
Debt Instrument [Line Items]
Long-term Debt	$ 1,140.5	$ 1,306.9	$ 933.3	$ 1,002.5	$ 207.2	$ 304.4
Less current portion	183.4	207.9
Long-term debt, net of current portion	957.1	1,099.0
Weighted-average fixed-interest rate	5.90%	5.80%
Weighted-average variable-interest rate	2.00%	1.90%
Debt payments							62.9	102.5
Long-term Debt, Fiscal Year Maturity [Abstract]
Remainder of 2012	108.6
2013	160.9
2014	117.1
2015	113.4
2016	110.6
Thereafter	529.9
Long-term Debt	$ 1,140.5	$ 1,306.9	$ 933.3	$ 1,002.5	$ 207.2	$ 304.4

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CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE OPERATIONS (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Net Income	$ 67.5	$ 28.8	$ 108.3	$ 103.0
Related to marketable securities:
Unrealized holding gains (losses) arising during the period	0.6	3.9	4.3	1.7
Reclassification adjustment for gains included in net income	(1.5)	(0.9)	(2.5)	(1.5)
Income tax effect	0.3	(1.2)	(0.7)	(0.2)
Marketable securities, net of tax	(0.6)	1.8	1.1	0
Related to employee benefit plans:
Prior service cost arising during period	9.8	6.4	19.7	12.7
Income tax effect	(3.7)	(2.4)	(7.4)	(4.8)
Employee benefit plans, net of tax	6.1	4.0	12.3	7.9
Related to interest rate derivative instruments:
Unrealized holding gains arising during the period	(6.4)	(3.3)	(3.2)	(1.1)
Income tax effect	2.5	1.2	(1.0)	0.4
Interest rate derivative instruments, net of tax	(3.9)	(2.1)	(4.2)	(0.7)
Other comprehensive income	1.6	3.7	9.2	7.2
Comprehensive income	$ 69.1	$ 32.5	$ 117.5	$ 110.2

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FAIR VALUE MEASUREMENTS

6 Months Ended

Jun. 30, 2012

Fair Value Disclosures [Abstract]

FAIR VALUE MEASUREMENTS

FAIR VALUE MEASUREMENTS

Fair Value of Financial Instruments on a Recurring Basis

Fair values of financial instruments on the consolidated balance sheet (in millions):

June 30, 2012	Level 1		Level 2			Total
Assets
Marketable securities
U.S. government and agency securities	$	368.8	$	—		$	368.8
Foreign government bonds	—		42.3			42.3
Asset-back securities	—		90.7			90.7
Mortgage-back securities	—		110.4			110.4
Corporate notes and bonds	—		522.8			522.8
Municipal securities	—		15.0			15.0
Derivative instruments
Fuel hedge contracts	—		61.3			61.3
Liabilities
Derivative instruments
Interest rate swap agreements	—		(32.0		)	(32.0		)

December 31, 2011	Level 1		Level 2			Total
Assets
Marketable securities
U.S. government and agency securities	$	295.9	$	—		$	295.9
Foreign government bonds	—		25.4			25.4
Asset-back securities	—		58.0			58.0
Mortgage-back securities	—		124.9			124.9
Corporate notes and bonds	—		522.6			522.6
Municipal securities	—		11.9			11.9
Derivative instruments
Fuel hedge contracts	—		116.9			116.9
Liabilities
Derivative instruments
Fuel hedge contracts	—		(10.3		)	(10.3		)
Interest rate swap agreements	—		(28.8		)	(28.8		)

The Company uses the market and income approach to determine the fair value of marketable securities. U.S. government securities are Level 1 as the fair value is based on quoted prices in active markets. Foreign governments bonds, asset-back securities, mortgage-back securities, corporate notes and bonds, and municipal securities are Level 2 as the fair value is based on industry standard valuation models that are calculated based on observable inputs such as quoted interest rates, yield curves, credit ratings of the security and other observable market information.

The Company uses the market approach and the income approach to determine the fair value of derivative instruments. Fuel hedge contracts are over-the-counter, are not exchange traded and determined based on observable inputs that are readily available in active markets or can be derived from information available in active, quoted markets. Interest rate swap agreements are Level 2 as the fair value of these contracts is determined based on the difference between the fixed interest rate in the agreements and the observable LIBOR-based interest forward rates at period end, multiplied by the total notional value.

The Company has no other financial assets that are measured at fair value on a nonrecurring basis at June 30, 2012.

Fair Value of Other Financial Instruments

The Company used the following methods and assumptions to determine the fair value of financial instruments that are not recognized at fair value as described below.

Cash and Cash Equivalents: Carried at amortized costs, which approximates fair value.

Debt: The carrying amount of the Company's variable-rate debt approximates fair values. For fixed-rate debt, the Company uses the income approach to determine the estimated fair value, by using discounted cash flow using borrowing rates for comparable debt over the weighted life of the outstanding debt. The estimated fair value of the fixed-rate debt is Level 3 as certain inputs used are unobservable.

Fixed-rate debt that is not carried at fair value on the consolidated balance sheet and the estimated fair value of long-term fixed-rate debt (in millions):

	June 30, 2012		December 31, 2011
Carrying amount	$	933.3	$	1,002.5
Fair value	1,016.3		1,075.8

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EMPLOYEE BENEFIT PLANS (TABLES)

6 Months Ended

Jun. 30, 2012

Compensation and Retirement Disclosure [Abstract]

Schedule of Net Benefit Costs [Table Text Block]

Net periodic benefit costs recognized included the following components for the three months ended June 30 (in millions): 

	Qualified						Nonqualified				Postretirement Medical
	2012			2011			2012		2011		2012			2011
Service cost	$	9.5		$	9.0		$	0.2	$	0.2	$	1.3		$	1.5
Interest cost	18.3			18.3			0.5		0.5		1.3			1.8
Expected return on assets	(23.2		)	(22.1		)	—		—		—			—
Amortization of prior service cost	(0.3		)	(0.2		)	—		—		0.2			0.1
Recognized actuarial loss	9.9			6.1			0.2		0.2		(0.2		)	0.3
Net periodic benefit costs	$	14.2		$	11.1		$	0.9	$	0.9	$	2.6		$	3.7

Net periodic benefit costs recognized included the following components for the six months ended June 30 (in millions): 

	Qualified						Nonqualified				Postretirement Medical
	2012			2011			2012		2011		2012			2011
Service cost	$	19.1		$	18.0		$	0.4	$	0.4	$	2.5		$	3.0
Interest cost	36.5			36.6			1.0		1.1		2.7			3.6
Expected return on assets	(46.5		)	(44.2		)	—		—		—			—
Amortization of prior service cost	(0.5		)	(0.4		)	—		—		0.3			0.2
Recognized actuarial loss	19.8			12.2			0.4		0.3		(0.3		)	0.6
Net periodic benefit costs	$	28.4		$	22.2		$	1.8	$	1.8	$	5.2		$	7.4

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FAIR VALUE MEASUREMENTS - LONG-TERM DEBT (DETAILS) (USD $) In Millions, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Carrying Amount [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	$ 933.3	$ 1,002.5
Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	$ 1,016.3	$ 1,075.8

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GENERAL AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES GENERAL AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)

6 Months Ended

Jun. 30, 2012

RECLASSIFICATIONS [Abstract]

Schedule of Error Corrections and Prior Period Adjustments [Table Text Block]

The table below shows operating revenues originally reported in the Form 10-Q for the three and six months ended June 30, 2011 and the effect of the reclassification on the condensed consolidated statement of operations (in millions):

	Three Months Ended June 30, 2011				Six Months Ended June 30, 2011
	As Reclassified		Reported		As Reclassified		Reported
Operating Revenues
Passenger
Mainline	$	774.2	$	819.9	$	1,433.5	$	1,522.3
Regional	179.0		194.3		340.6		370.8
Total passenger revenue	953.2		1,014.2		1,774.1		1,893.1
Freight and mail	29.1		29.1		54.0		54.0
Other - net	127.9		66.9		247.3		128.3
Total Operating Revenues	$	1,110.2	$	1,110.2	$	2,075.4	$	2,075.4