FORM 12b-25


Commission File Number        000-51890     
CUSIP Number        359059102     

(Check One):
o Form 10-K
o Form 20-F
o Form 11-K
x Form 10-Q
o Form 10-D
o Form N-SAR
o Form N-CSR
For period ended:
June 30, 2009
Transition Report on Form 10-K
Transition Report on Form 20-F
Transition Report on Form 11-K
Transition Report on Form 10-Q
Transition Report on Form N-SAR

For the transition period ended:
Read Attached Instruction Sheet Before Preparing Form.
Please Print or Type.

Nothing in this form shall be construed to imply that the Commission has verified any information contained herein.
If the notification relates to a portion of the filing checked above, identify the item(s) to which the notification relates: _______________________________________________


Full name of registrant:
Frontier Airlines Holdings, Inc.
Former name if applicable:
Address of principal executive office (street and number):
7001 Tower Road
City, state and zip code:
Denver, Colorado 80249

PART II.  RULE 12b-25(b) AND (c)
If the subject report could not be filed without unreasonable effort or expense and the registrant seeks relief pursuant to Rule 12b-25(b), the following should be completed.  (Check box if appropriate.)
(a)  the reasons described in reasonable detail in Part III of this form could not be eliminated without unreasonable effort or expense;
(b)  the subject annual report, semi-annual report, transition report on Form 10-K, Form 20-F, Form 11-K, Form N-SAR or Form N-CSR, or portion thereof, will be filed on or before the fifteenth calendar day following the prescribed due date; or the subject quarterly report or transition report on Form 10-Q or subject distribution report on Form 10-D, or portion thereof, will be filed on or before the fifth calendar day following the prescribed due date; and
(c)  the accountant’s statement or other exhibit required by Rule 12b-25(c) has been attached if applicable.
State below in reasonable detail the reasons why Forms 10-K, 20-F, 11-K, 10-Q, 10-D, N-SAR, N-CSR, or the transition report or portion thereof, could not be filed within the prescribed time period.
The registrant will not be able to timely file its Quarterly Report on Form 10-Q for the three months ended June 30, 2009.  The reason for the registrant’s delay in filing the Quarterly Report on Form 10-Q relates to the filing by the registrant and its subsidiaries of voluntary petitions for reorganization under Chapter 11 of the United States Bankruptcy Code in the United States Bankruptcy Court for the Southern District of New York on April 10, 2008 (Case No. 08-11298 (RDD)).
(1)  Name and telephone number of person to contact in regard to this notification
Matthew Henry
(area code)
(telephone number)
(2)  Have all other periodic reports required under Section 13 or 15(d) of the Securities Exchange Act of 1934 or Section 30 of the Investment Company Act of 1940 during the preceding 12 months or for such shorter period that the registrant was required to file such report(s) been filed?  If the answer is no, identify report(s).
ý Yes     o No
(3)  Is it anticipated that any significant change in results of operations from the corresponding period for the last fiscal year will be reflected by the earnings statements to be included in the subject report or portion thereof?
ý Yes     o No
If so:  attach an explanation of the anticipated change, both narratively and quantitatively, and, if appropriate, state the reasons why a reasonable estimate of the results cannot be made.
 The Company references exhibit 99.1 to its Current Report on Form 8-K filed with the SEC on July 28, 2009, which contains financial results for the three months ended June 30, 2009.

(name of registrant as specified in charter)
has caused this notification to be signed on its behalf by the undersigned thereunto duly authorized.

Date   August 14, 2009                                     
  /s/ Matthew Henry
Matthew Henry
Vice President and General Counsel
Instruction.  The form may be signed by an executive officer of the registrant or by any other duly authorized representative.  The name and title of the person signing the form shall be typed or printed beneath the signature.  If the statement is signed on behalf of the registrant by an authorized representative (other than an executive officer), evidence of the representative’s authority to sign on behalf of the registrant shall be filed with the form.

Intentional misstatements or omissions of fact constitute Federal criminal violations (see 18 U.S.C. 1001).