8-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

____________________

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the

Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): March 1, 2018

____________________

SPIRIT AIRLINES, INC.

(Exact name of registrant as specified in its charter)

Delaware

(State or other jurisdiction of incorporation)

001-35186 (Commission File Number) 38-1747023 (IRS Employer Identification Number)

2800 Executive Way

Miramar, Florida 33025

(Address of principal executive offices, including Zip Code)

(954) 447-7920

(Registrant's telephone number, including area code)

____________________

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

[]	Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
[]	Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
[]	Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
[]	Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Item 7.01 Regulation FD Disclosure.

The information in this report furnished pursuant to Item 7.01 shall not be deemed “filed” for the purposes of Section 18 of the Securities and Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section. It may only be incorporated by reference in another filing under the Exchange Act or the Securities Act of 1933, as amended (the “Securities Act”), if such subsequent filing specifically references the information furnished pursuant to Item 7.01 of this report.

On March 1, 2018, the Company provided an update to investors regarding the Company's first quarter and full year 2018 guidance; a copy of which is attached hereto as Exhibit 99.1 and is incorporated herein by reference. The guidance provided therein is only an estimate of what the Company believes is realizable as of the date of this investor update. Actual results may vary from the guidance and the variations may be material. The Company undertakes no intent or obligation to publicly update or revise any of these projections, whether as a result of new information, future events or otherwise, except as required by law.

Item 9.01 Financial Statements and Exhibits.

(d)Exhibits

The following is furnished as an exhibit to this report and shall not be deemed “filed” for purposes of Section 18 of the Exchange Act:

Exhibit No.	Description
99.1	Investor Update regarding first quarter and full year 2018 guidance.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Date: March 1, 2018	SPIRIT AIRLINES, INC.
	By: /s/ Thomas Canfield
	Name: Thomas Canfield
	Title: Senior Vice President and General Counsel

EXHIBIT INDEX

Exhibit No.	Description
99.1	Investor Update regarding first quarter and full year 2018 guidance.

EX-99.1

Exhibit 99.1

Investor Update

March 1, 2018

This investor update provides Spirit's first quarter and full year 2018 guidance which, among other things, incorporates the estimated increased costs due to its recently amended pilot contract. All data is based on preliminary estimates.

		1Q18E		FY18E
Capacity - Available Seat Miles (ASMs)
Year-over-Year % Change	21.7%		~23%
Total Revenue per ASM (TRASM) (cents)
Year-over-Year % Change	Down 1% - 2.5%
Adjusted Operating Expense Ex-Fuel per ASM
Adjusted CASM ex-fuel year-over-year % change(2)	Down ~ 3%		Flat to Down 1%
Average Stage Length (miles)		1,033		1,050
Fuel Expense
Fuel gallons (millions)		96.1		~422
Economic fuel cost per gallon ($)(3)		$2.17
Selected Operating Expenses ($Millions)
Aircraft rent		$50.8	$203 to $209
Depreciation and amortization		$40.3	$190 to $196
Interest Expense, net of Capitalized Interest ($Millions)
Interest expense		$18.2		$72.7
Capitalized interest		$(2.4)		$(9.8)
Interest Income		$(4.2)		$(19.4)
Interest expense, net		$11.6		$43.5
Effective Tax Rate		25.5%		24%
Wtd. Average Diluted Share Count (Millions)		68.3		68.4

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Full Year 2018 Guidance
	Full Year 2018E
Estimated Cash Tax Rate(4)		~0%
Capital Expenditures ($MM)
Aircraft capital commitments, net of pre-delivery deposits:(5)		$354
Other capital expenditures(6)		$128
Pre-delivery deposits paid in current year for flight equipment		$167
Total capital expenditures		$649
Anticipated proceeds from issuance of long-term debt ($MM)		$357
Other Working Capital Requirements ($MM)
Payments for heavy maintenance events(7)		$211
Pre-paid maintenance deposits, net of reimbursements		$20

Footnotes

(1)	Excludes special items which may include loss on disposal of assets, special charges, and other items.
(2)	Excludes all components of fuel expense, loss on disposal of assets, special items.
(3)	Includes fuel taxes and into-plane fuel cost.
(4)	Spirit's cash tax rate differs from its effective tax rate primarily due to the benefit related to bonus depreciation on the acquisition of purchased aircraft.
(5)	Includes amounts related to 10 of the aircraft delivered, or scheduled to be delivered in 2018, net of $130 million funded as pre-delivery deposits for these aircraft.
(6)	Includes the purchase of nine spare engines.
(7)	Payments for heavy maintenance events are recorded as "Long-term deposits and other assets" within "Changes in operating assets and liabilities" on the Company's cash flow statement.

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Forward-Looking Statements

Statements in this release and certain oral statements made from time to time by representatives of the Company contain various forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended (the Securities Act), and Section 21E of the Securities Exchange Act of 1934, as amended (the Exchange Act) which are subject to the “safe harbor” created by those sections. Forward-looking statements are based on our management’s beliefs and assumptions and on information currently available to our management. All statements other than statements of historical facts are “forward-looking statements” for purposes of these provisions. In some cases, you can identify forward-looking statements by terms such as “may,” “will,” “should,” “could,” “would,” “expect,” “plan,” “anticipate,” “believe,” “estimate,” “project,” “predict,” “potential,” and similar expressions intended to identify forward-looking statements. Forward-looking statements include, without limitation, statements regarding the Company's intentions and expectations regarding the delivery schedule of aircraft on order, guidance and estimates for the first quarter and full year 2018, including expectations regarding the delivery schedule of aircraft on order, announced new service routes, revenues, TRASM, cost of operations, operating margin, capacity, CASM, CASM ex-fuel, fuel expense, economic fuel cost, expected unrealized mark-to-market gains or losses, capital expenditures and other working capital requirements, aircraft rent, depreciation and amortization, fuel hedges and tax rates. Such forward-looking statements are subject to risks, uncertainties and other important factors that could cause actual results and the timing of certain events to differ materially from future results expressed or implied by such forward-looking statements. Furthermore, such forward-looking statements speak only as of the date of this release. Except as required by law, we undertake no obligation to update any forward-looking statements to reflect events or circumstances after the date of such statements. Risks or uncertainties (i) that are not currently known to us, (ii) that we currently deem to be immaterial, or (iii) that could apply to any company, could also materially adversely affect our business, financial condition, or future results. References in this report to “Spirit,” “we,” “us,” “our,” or the “Company” shall mean Spirit Airlines, Inc., unless the context indicates otherwise. Additional information concerning certain factors is contained in the Company's Securities and Exchange Commission filings, including but not limited to the Company's Annual Report on Form 10-K, Quarterly Reports on Form 10-Q, and Current Reports on Form 8-K.

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