FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person * Biffle Barry   2. Issuer Name and Ticker or Trading Symbol Spirit Airlines, Inc. [SAVE] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) See Remarks (Last) (First) (Middle) C/O SPIRIT AIRLINES, INC., 2800 EXECUTIVE WAY 3. Date of Earliest Transaction (Month/Day/Year) 05/10/2012 (Street) MIRAMAR, FL 33025 4. If Amendment, Date Original Filed(Month/Day/Year) 6. Individual or Joint/Group Filing(Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 05/10/2012   M   5,000 A $ 7.8 94,375 (1) D   Common Stock 05/10/2012   J(2)   5,000 D $ 0 89,375 (1) D   Common Stock 05/10/2012   J(2)   5,000 A $ 0 86,139 I See Footnote (3)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

4. Transaction Code (Instr. 8)

5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5)

6. Date Exercisable and Expiration Date (Month/Day/Year)

7. Title and Amount of Underlying Securities (Instr. 3 and 4)

8. Price of Derivative Security (Instr. 5)

9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)

10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)

11. Nature of Indirect Beneficial Ownership (Instr. 4)

Code

V

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Stock Option (right to buy)

$ 7.8

05/10/2012

M

5,000

(4)

07/27/2020

Common Stock

5,000

$ 0

5,000

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Biffle Barry C/O SPIRIT AIRLINES, INC. 2800 EXECUTIVE WAY MIRAMAR, FL 33025			See Remarks

Signatures

/s/ Thomas Canfield, as Attorney-In-Fact for Barry Biffle		05/14/2012
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	Includes 20,000 Restricted Stock Units.
(2)	The Reporting Person transferred 5,000 shares of Common Stock to Meabs Bay LP, a limited partnership in which the Reporting Person holds a controlling interest, immediately following the option exercise reported herein.
(3)	Shares held by Meabs Bay LP, a limited partnership in which the Reporting Person holds a controlling interest.
(4)	50% of the shares that remain subject to the option will vest and become exercisable on each of February 2, 2013 and February 2, 2014, such that 100% of the shares that remain subject to the option will be fully vested and exercisable on February 2, 2014.
Remarks: Executive VP and Chief Marketing Officer

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