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                                                                     EXHIBIT 5

                  OPINION OF SQUIRE, SANDERS & DEMPSEY L.L.P.

                               September 15, 2006


Securities and Exchange Commission
450 Fifth Street, N.W.
Washington, D.C. 20549

          RE: MESA AIR GROUP, INC.-REGISTRATION STATEMENT ON FORM S-3

Ladies and Gentlemen:

     We have acted as counsel to Mesa Air Group, Inc., a Nevada corporation
(the "Company") in connection with the registration for sale under the
Securities Act of 1933, as amended (the "Act"), of 219,667 shares of its common
stock, no par value per share ("Common Stock"), to be sold by the selling
stockholder identified therein, all of which shares are issuable upon the
exercise of an outstanding warrant (the "Selling Stockholder Shares"), pursuant
to a Registration Statement on Form S-3 (the "Registration Statement"), and
certain matters relating thereto.

     In that connection, we have examined such documents, corporate records and
other instruments and undertaken such further inquiry as we have deemed
necessary or appropriate for purposes of this opinion, including, but not
limited to, examination of the Registration Statement, the warrant relating to
the Selling Stockholder Shares and the Certificate of Incorporation and Bylaws
of the Company, including all amendments thereto. In our examination, we have
assumed the genuineness of all signatures, the legal capacity of all natural
persons, the accuracy and completeness of all documents submitted to us, the
authenticity of all original documents, and the conformity to authentic original
documents of all documents submitted to us as copies (including telecopies).
This opinion letter is given, and all statements herein are made, in the context
of the foregoing.

     Based upon, subject to and limited by the foregoing, we are of the opinion
that when the Selling Stockholder Shares are issued (before resale pursuant to
the Registration Statement) upon exercise of a currently outstanding warrant to
purchase Common Stock (and the exercise price of such warrant is received
therefor), such Selling Stockholder Shares will be duly authorized, validly
issued, fully paid and nonassessable.

     We hereby consent to the use of this opinion as an exhibit to the
Registration Statement. In giving this consent, we do not thereby admit that
we are "experts" within the meaning of the Act, nor do we admit that we are
within the category of persons whose consent is required under Section 7
of the Act or under the rules and regulations of the Securities and
Exchange Commission.

     We do not express an opinion on any matters other than those expressly
set forth in this letter.

                                                 Very truly yours,



                                           /s/ Squire, Sanders & Dempsey L.L.P.
                                          _____________________________________
                                              SQUIRE, SANDERS & DEMPSEY L.L.P.
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