Exhibit 32.1

Certifications Pursuant to 18 U.S.C. § 1350 As Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

Pursuant to 18 U.S.C. § 1350, adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, the undersigned officer of Spirit Airlines, Inc. (the “Company”) hereby certifies, to such officer’s knowledge, that:

(i.) the Yearly Report on Form 10-K of the Company for the year ended December 31, 2011 (the "Report") full complies with the requirements of Section 13(a) or Section 15(d), as applicable, of the Securities Exchange Act of 1934, as amended; and

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

Date: February 22, 2012	/s/ B. Ben Baldanza
	B. Ben Baldanza
	President and Chief Executive Officer
Date: February 22, 2012	/s/ David Lancelot
	David Lancelot
	Senior Vice President and
	Chief Financial Officer