Mesa Air (MESA) 10-Q 2005 Q3 Quarterly report

Exhibit 32.1

MESA AIR GROUP, INC. AND ITS SUBSIDIARIES

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 Quarterly Report of Mesa Air Group, Inc. (the “Company”) on Form 10-Q for the period ended June 30, 2005, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Jonathan G. Ornstein, Chairman and Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. ss. 1350, as adopted pursuant to ss. 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; and

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

By  /s/ Jonathan G. Ornstein

Jonathan G. Ornstein

Chairman of the Board and

Chief Executive Officer

Date: August 9, 2005