UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                SCHEDULE 13D/A-8

                    Under the Securities Exchange Act of 1934
                               (Amendment No. 8)*

                         REPUBLIC AIRWAYS HOLDINGS INC.
                         ------------------------------
                                (Name of issuer)

                     Common Stock, $.001 Par Value Per Share
                     ---------------------------------------
                         (Title of class of securities)

                                   760276 10 5
                                 (CUSIP number)

                              Arthur H. Amron, Esq.
                               Wexford Capital LLC
                             411 West Putnam Avenue
                               Greenwich, CT 06830
                                 (203) 862-7012
- --------------------------------------------------------------------------------
(Name, address and telephone number of person authorized to receive notices and
                                 communications)

                                September 4, 2007
             -------------------------------------------------------
             (Date of event which requires filing of this statement)

If the filing person has previously filed a statement on Schedule 13G to report
the acquisition that is the subject of this Schedule 13D, and is filing this
schedule because of Sections 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check
the following box [_].

Note: Schedules filed in paper format shall include a signed original and five
copies of the schedule, including all exhibits. See Section 240.13d-7 for other
parties to whom copies are to be sent.

*    The remainder of this cover page shall be filled out for a reporting
     person's initial filing on this form with respect to the subject class of
     securities, and for any subsequent amendment containing information which
     would alter disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the Securities Exchange Act of
1934 ("Act") or other subject to the liabilities of that section of Act but
shall be subject to all other provisions of the Act (however, see the Notes).


                                                               Page 1 of 8 Pages



CUSIP No. 760276 10 5



- --------------------------------------------------------------------------------------------------
1.    Names of Reporting Persons.                                                  WexAir RJET LLC
      I.R.S. Identification Nos. of Above Persons (entities only) 06-1497977    (f/k/a WexAir LLC)
- --------------------------------------------------------------------------------------------------
2.    Check the Appropriate Box if a Member of a Group                                     (a) [_]
      (See Instructions)                                                                   (b) [_]
- --------------------------------------------------------------------------------------------------
3.    SEC Use Only
- --------------------------------------------------------------------------------------------------
4.    Source of Funds (See Instructions)                                                        OO
- --------------------------------------------------------------------------------------------------
5.    Check if Disclosure of Legal Proceedings is
      Required Pursuant to Items 2(d) or 2(e)                                                  [_]
- --------------------------------------------------------------------------------------------------
6.    Citizenship or Place of Organization                                                Delaware
- --------------------------------------------------------------------------------------------------
      Number of Shares   7.    Sole Voting Power                                         2,556,063
      Beneficially       -------------------------------------------------------------------------
      Owned by Each      8.    Shared Voting Power (see Item 5 below)                            0
      Reporting          -------------------------------------------------------------------------
      Person With        9.    Sole Dispositive Power                                    2,556,063
                         -------------------------------------------------------------------------
                         10.   Shared Dispositive Power (see Item 5 below)                       0
- --------------------------------------------------------------------------------------------------
11.   Aggregate Amount Beneficially
      Owned by Each Reporting Person                                                     2,556,063
- --------------------------------------------------------------------------------------------------
12.   Check if the Aggregate Amount in Row (11) Excludes
      Certain Shares (See Instructions)                                                        [_]
- --------------------------------------------------------------------------------------------------
13.   Percent of Class Represented by Amount in Row (11)                                     6.17%
- --------------------------------------------------------------------------------------------------
14.   Type of Reporting Person (See Instructions)                                               OO
- --------------------------------------------------------------------------------------------------



                                                               Page 2 of 8 Pages



CUSIP No. 760276 10 5



- --------------------------------------------------------------------------------------------------
1.   Names of Reporting Persons.                                               Wexford Capital LLC
     I.R.S. Identification Nos. of Above Persons (entities only) 06-1442624
- --------------------------------------------------------------------------------------------------
2.   Check the Appropriate Box if a Member of a Group                                      (a) [_]
     (See Instructions)                                                                    (b) [_]
- --------------------------------------------------------------------------------------------------
3.   SEC Use Only
- --------------------------------------------------------------------------------------------------
4.   Source of Funds (See Instructions)                                                         OO
- --------------------------------------------------------------------------------------------------
5.   Check if Disclosure of Legal Proceedings is
     Required Pursuant to Items 2(d) or 2(e)                                                   [_]
- --------------------------------------------------------------------------------------------------
6.   Citizenship or Place of Organization                                              Connecticut
- --------------------------------------------------------------------------------------------------
     Number of Shares   7.    Sole Voting Power                                             32,500
     Beneficially       --------------------------------------------------------------------------
     Owned by Each      8.    Shared Voting Power (see Item 5 below)                     2,556,063
     Reporting          --------------------------------------------------------------------------
     Person With        9.    Sole Dispositive Power                                        32,500
                        --------------------------------------------------------------------------
                        10.   Shared Dispositive Power (see Item 5 below)                2,556,063
- --------------------------------------------------------------------------------------------------
11.  Aggregate Amount Beneficially
     Owned by Each Reporting Person                                                      2,588,563
- --------------------------------------------------------------------------------------------------
12.  Check if the Aggregate Amount in Row (11) Excludes
     Certain Shares (See Instructions)                                                         [_]
- --------------------------------------------------------------------------------------------------
13.  Percent of Class Represented by Amount in Row (11)                                      6.24%
- --------------------------------------------------------------------------------------------------
14.  Type of Reporting Person (See Instructions)                                                OO
- --------------------------------------------------------------------------------------------------



                                                               Page 3 of 8 Pages



CUSIP No. 760276 10 5



- --------------------------------------------------------------------------------------------------
1.   Names of Reporting Persons.                                               Charles E. Davidson
     I.R.S. Identification Nos. of Above Persons (entities only)
     (Intentionally Omitted)
- --------------------------------------------------------------------------------------------------
2.   Check the Appropriate Box if a Member of a Group                                      (a) [_]
     (See Instructions)                                                                    (b) [_]
- --------------------------------------------------------------------------------------------------
3.   SEC Use Only
- --------------------------------------------------------------------------------------------------
4.   Source of Funds (See Instructions)                                                         OO
- --------------------------------------------------------------------------------------------------
5.   Check if Disclosure of Legal Proceedings is
     Required Pursuant to Items 2(d) or 2(e)                                                   [_]
- --------------------------------------------------------------------------------------------------
6.   Citizenship or Place of Organization                                            United States
- --------------------------------------------------------------------------------------------------
     Number of Shares   7.   Sole Voting Power                                                   0
     Beneficially       --------------------------------------------------------------------------
     Owned by Each      8.   Shared Voting Power (see Item 5 below)                      2,588,563
     Reporting          --------------------------------------------------------------------------
     Person With        9.   Sole Dispositive Power                                              0
                        --------------------------------------------------------------------------
                        10.  Shared Dispositive Power (see Item 5 below)                 2,588,563
- --------------------------------------------------------------------------------------------------
11.  Aggregate Amount Beneficially
     Owned by Each Reporting Person                                                      2,588,563
- --------------------------------------------------------------------------------------------------
12.  Check if the Aggregate Amount in Row (11) Excludes
     Certain Shares (See Instructions)                                                         [_]
- --------------------------------------------------------------------------------------------------
13.  Percent of Class Represented by Amount in Row (11)                                      6.24%
- --------------------------------------------------------------------------------------------------
14.  Type of Reporting Person (See Instructions)                                                IN
- --------------------------------------------------------------------------------------------------



                                                               Page 4 of 8 Pages



CUSIP No. 760276 10 5



- --------------------------------------------------------------------------------------------------
1.   Names of Reporting Persons.                                                  Joseph M. Jacobs
     I.R.S. Identification Nos. of Above Persons (entities only)
     (Intentionally Omitted)
- --------------------------------------------------------------------------------------------------
2.   Check the Appropriate Box if a Member of a Group                                      (a) [_]
     (See Instructions)                                                                    (b) [_]
- --------------------------------------------------------------------------------------------------
3.   SEC Use Only
- --------------------------------------------------------------------------------------------------
4.   Source of Funds (See Instructions)                                                         OO
- --------------------------------------------------------------------------------------------------
5.   Check if Disclosure of Legal Proceedings is
     Required Pursuant to Items 2(d) or 2(e)                                                   [_]
- --------------------------------------------------------------------------------------------------
6.   Citizenship or Place of Organization                                            United States
- --------------------------------------------------------------------------------------------------
     Number of Shares   7.   Sole Voting Power                                                   0
     Beneficially       --------------------------------------------------------------------------
     Owned by Each      8.   Shared Voting Power (see Item 5 below)                      2,588,563
     Reporting          --------------------------------------------------------------------------
     Person With        9.   Sole Dispositive Power                                              0
                        --------------------------------------------------------------------------
                        10.  Shared Dispositive Power (see Item 5 below)                 2,588,563
- --------------------------------------------------------------------------------------------------
11.  Aggregate Amount Beneficially
     Owned by Each Reporting Person                                                      2,588,563
- --------------------------------------------------------------------------------------------------
12.  Check if the Aggregate Amount in Row (11) Excludes
     Certain Shares (See Instructions)                                                         [_]
- --------------------------------------------------------------------------------------------------
13.  Percent of Class Represented by Amount in Row (11)                                      6.24%
- --------------------------------------------------------------------------------------------------
14.  Type of Reporting Person (See Instructions)                                                IN
- --------------------------------------------------------------------------------------------------



                                                               Page 5 of 8 Pages



     This Amendment No. 8 to Schedule 13D modifies and supplements the Schedule
13D initially filed on November 7, 2005, and amended by Amendment No. 1 to
Schedule 13D filed on November 21, 2005, Amendment No. 2 to Schedule 13D filed
on December 19, 2004, Amendment No. 3 to Schedule 13D filed on January 4, 2006,
Amendment No. 4 to Schedule 13D filed on May 9, 2006, Amendment No. 5 to
Schedule 13D filed on August 16, 2006, Amendment No. 6 to Schedule 13D filed on
August 21, 2006 and Amendment No. 7 to Schedule 13D filed on March 21, 2007 (as
amended, the "Statement"), with respect to the common stock, $0.001 par value
per share (the "Common Stock"), of Republic Airways Holdings Inc., a Delaware
corporation (the "Company"). Except to the extent supplemented by the
information contained in this Amendment No. 8, the Statement, as amended as
provided herein, remains in full force and effect. Capitalized terms used herein
without definition have the respective meanings ascribed to them in the
Statement.

ITEM 5. INTEREST IN SECURITIES OF THE ISSUER.

     Since the date of the Statement, the Reporting Persons effectuated the
following sales of shares of Common Stock: (a) an aggregate of 77,400 shares in
open market transactions in June 2007 at an average price of $22.50 per share
and (b) an aggregate of 2,000,000 shares on September 4, 2007 in a private
transaction with the Issuer at a price of $19.20 per share. As a result of the
foregoing, the aggregate number and percentage (on the basis of 41,450,007
shares of Common Stock issued and outstanding, as reported in the Company's Form
10-Q filed August 3, 2007) of shares of Common Stock beneficially owned by the
Reporting Persons are as follows:

     WexAir RJET LLC (f/k/a Wexair LLC):

     (a)  Amount beneficially owned: 2,556,063

     (b)  Percent of class: 6.17%

     (c)  Number of shares as to which the person has:

          (i)   Sole power to vote or to direct the vote: 2,556,063

          (ii)  Shared power to vote or to direct the vote: 0

          (iii) Sole power to dispose or to direct the disposition of: 2,556,063

          (iv)  Shared power to dispose or to direct the disposition of: 0

     Wexford Capital LLC:

     (a)  Amount beneficially owned: 2,588,563

     (b)  Percent of class: 6.24%

     (c)  Number of shares as to which the person has:

          (i)   Sole power to vote or to direct the vote: 32,500

          (ii)  Shared power to vote or to direct the vote: 2,556,063

          (iii) Sole power to dispose or to direct the disposition of: 32,500

          (iv)  Shared power to dispose or to direct the disposition of:
                2,556,063

     Charles E. Davidson:

     (a)  Amount beneficially owned: 2,588,563

     (b)  Percent of class: 6.24%

     (c)  Number of shares as to which the person has:

          (i)   Sole power to vote or to direct the vote: 0

          (ii)  Shared power to vote or to direct the vote: 2,588,563

          (iii) Sole power to dispose or to direct the disposition of: 0

          (iv)  Shared power to dispose or to direct the disposition of:
                2,588,563

     Joseph M. Jacobs:

     (a)  Amount beneficially owned: 2,588,563

     (b)  Percent of class: 6.24%

     (c)  Number of shares as to which the person has:

          (i)   Sole power to vote or to direct the vote: 0

          (ii)  Shared power to vote or to direct the vote: 2,588,563

          (iii) Sole power to dispose or to direct the disposition of: 0

          (iv)  Shared power to dispose or to direct the disposition of:
                2,588,563

     Wexford Capital may, by reason of its status as managing member of WexAir,
be deemed to own beneficially the shares of Common Stock of which WexAir
possesses beneficial ownership. Each of Charles E. Davidson and Joseph M. Jacobs
may, by reason of his status as a controlling person of Wexford Capital, be
deemed to own beneficially the shares of Common Stock of which WexAir and
Wexford Capital possesses beneficial ownership. Each of Charles E.


                                                               Page 6 of 8 Pages



Davidson, Joseph M. Jacobs and Wexford Capital shares the power to vote and to
dispose of the shares of Common Stock beneficially owned by WexAir and Wexford
Capital. Each of Messrs. Davidson and Jacobs disclaims beneficial ownership of
the shares of Common Stock owned by WexAir and Wexford Capital and Wexford
Capital disclaims beneficial ownership of the shares of Common Stock owned by
WexAir, and this report shall not be deemed as an admission that they are the
beneficial owners of such securities except in the case of Messrs. Davidson and
Jacobs to the extent of their interests in each member of WexAir.

     Except as set forth above, the Reporting Persons have not effected any
transactions in the Common Stock during the 60 days preceding the date of this
Amendment No. 8 to Schedule 13D.

                                    * * * * *


                                                               Page 7 of 8 Pages



                                    SIGNATURE

     After reasonable inquiry and to the best of each of the undersigned's
knowledge and belief, each of the undersigned certifies that the information set
forth in this statement is true, complete and correct.

Dated: September 4, 2007

                                        WEXAIR RJET LLC


                                        By: /s/ Arthur H. Amron
                                            ------------------------------------
                                            Name: Arthur H. Amron
                                            Title: Vice President and Assistant
                                                   Secretary


                                        WEXFORD CAPITAL LLC


                                        By: /s/ Arthur H. Amron
                                            ------------------------------------
                                            Name: Arthur H. Amron
                                            Title: Partner and Secretary


                                        /s/ Charles E. Davidson
                                        ----------------------------------------
                                        CHARLES E. DAVIDSON


                                        /s/ Joseph M. Jacobs
                                        ----------------------------------------
                                        JOSEPH M. JACOBS


                                                               Page 8 of 8 Pages