Exhibit 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in Registration Statement Nos. 333-02791, 333-09395, 333-83799, 333-83801, 333-83803, 333-83805, 333-58646 and 333-107404 of Mesa Air Group, Inc. on Form S-8 and Registration Statement Nos. 333-108490 and 333-115312 on Form S-3 of our report dated December 13, 2004, (which expresses an unqualified opinion and includes an explanatory paragraph relating to the Company’s significant code-sharing agreements), appearing in this Annual Report on Form 10-K of Mesa Air Group, Inc. for the year ended September 30, 2004.

DELOITTE & TOUCHE LLP

Phoenix, Arizona
December 13, 2004

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