EXHIBIT 5.1

                        PARCEL, MAURO & SPAANSTRA, P.C.
                        1801 CALIFORNIA ST., STE. 3600
                               DENVER, CO  80202
                                (303) 292-6400


                                 July 9, 1998


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

     Re:  Frontier Airlines, Inc.
          Form S-3 Registration Statement
          Covering 7,452,930 Shares of Common Stock

Ladies and Gentlemen:

     As counsel for Frontier Airlines, Inc., a Colorado corporation (the
"Company"), we have examined the above-referenced Registration Statement on Form
S-3 under the Securities Act of 1933, as amended (the "Registration Statement"),
which the Company has filed covering the sale of 7,452,930 shares of the
Company's common stock (the "Shares").  Capitalized terms used and not defined
herein shall have the meanings given to them in the Registration Statement.

     We have examined the Registration Statement, the Company's articles of
incorporation and by-laws and the record of its corporate proceedings and have
made such other investigation and reviewed such other documents as we have
deemed necessary in order to express the opinions set forth below.

     Based upon the foregoing and upon such further examinations as we have
deemed relevant and necessary, we are of the opinion that:

     1.   The Company is a corporation duly organized and validly existing under
the laws of the State of Colorado.

     2.   The Shares have been legally and validly authorized under the
Company's Articles of Incorporation, as amended, and constitute (or will
constitute upon due exercise of the warrants to purchase Shares as described in
the Registration Statement) duly and validly issued and outstanding and fully
paid and nonassessable shares of the Company.

 
Securities and Exchange Commission
July 9, 1998
Page 2



     We render the foregoing opinion as members of the Bar of the State of
Colorado and express no opinion as to laws other than the laws of the State of
Colorado and the federal laws of the United States of America.

     We hereby consent to the use of our name beneath the caption "Legal
Matters" in the Prospectus forming a part of the Registration Statement and to
the filing of a copy of this opinion as Exhibit 5.1 thereto.


                                        PARCEL, MAURO & SPAANSTRA, P.C.