THIRD AMENDMENT TO THE CAPACITY PURCHASE AGREEMENT

Exhibit 10.9.4

THIRD AMENDMENT TO THE CAPACITY PURCHASE AGREEMENT

This Third Amendment (this “Amendment”) to that certain Capacity Purchase Agreement (the “Agreement”), by and between United Airlines, Inc., a Delaware corporation (“United”), and, Mesa Airlines, Inc., a Nevada corporation (“Contractor”), and Mesa Air Group, Inc. (“Parent”), is entered into this 1st day of January, 2015 by and between United, Contractor and Parent.

WHEREAS, United, Contractor and Parent entered into that certain Capacity Purchase Agreement dated as of August 29, 2013 (the “Agreement”); and

NOW THEREFORE, in consideration of the mutual covenants contained herein and other good and valuable consideration, the receipt, sufficiency, and adequacy of which are hereby acknowledged, the parties agree to amend the Agreement as follows:

Capitalized terms used in this Amendment that are not otherwise defined in this Amendment shall have the meanings given to them in the Agreement.

Exhibit T, titled “United Wi-Fi”, shall be added to the Agreement, effective as of January 1, 2015, notwithstanding the date of this Amendment

“EXHIBIT T

United Wi-Fi”

United has contracted with Gogo, Inc. (“Gogo”) to provide air-to-ground internet service inflight (“United’s Wi-Fi Agreement”). Pursuant to United’s Wi-Fi Agreement, Gogo or one of its subcontractors will install the Gogo Wi-Fi and inflight entertainment equipment, including associated software (“Wi-Fi Equipment”) on the CRJ700 and E175 Aircraft. For purposes of this Amendment, Wi-Fi and inflight entertainment services will be defined as “Wi-Fi Services”. As of the date of this Amendment, Gogo has subcontracted with STS Line Maintenance (“STS”) to perform the actual installation of the Wi-Fi Equipment. Contractor and United agree that the Wi-Fi Equipment will be installed on selected Contractor aircraft that provide United Express regional airline services as such aircraft are determined by united from time to time; such initially selected aircraft are defined by tail number and identified in Attachment 1 attached and may be referred to throughout this Amendment as “Equipped Aircraft”. United has purchased, or will purchase, all Wi-Fi Equipment installed. Contractor agrees that United shall remain the sole owner of the Wi-Fi Equipment installed on Contractor aircraft and Contractor agrees not to assert any claim of ownership or a lien on such Wi-Fi Equipment. United will purchase all Wi-Fi Equipment from Gogo. Contractor agrees to use its commercially reasonable efforts to make its selected aircraft available to Gogo and/or STS (or other installation vendor as applicable) to enable the installation of the Wi-Fi Equipment to occur as expeditiously as possible without interfering with

- 1 -

Contractor’s operations (and United agrees to reasonably cooperate with Contractor in this regard with respect to scheduling of the aircraft to facilitate such installation).

Contractor acknowledges and agrees that all revenues generated from or in connection with the sale of Wi-Fi Services onboard Equipped Aircraft are the sole property of and shall be retained by United (or, if received by Contractor, shall be promptly remitted without set-off to United; free and clear of any claims or liens created by Contractor or any third party arising by, through or under Contractor or its affiliates). Contractor agrees that it shall reasonably cooperate with United so as to permit United to receive all revenues of the type described above.

Contractor shall issue a no-cost Wi-Fi purchase order to Gogo in accordance with, and subject to, the provisions of United’s Wi-Fi Agreement as such provisions have been provided by United to Contractor for (i) the quantity of shipsets ordered; (ii) requested delivery dates; (iii) point of delivery; (iv) a listing of the aircraft (by tail number) onto which the Wi-Fi Equipment is to be installed; (v) any special requirements relating to the order; and (vi) a purchase order number and date. Each such purchase order shall be at no stated cost to Contractor, and Gogo will issue invoices related to such purchase order(s) issued by Contractor directly to United pursuant to and in accordance with the terms and conditions of United’s Wi-Fi Agreement. If there is any information missing from the purchase order at the time of issuance, Contractor understands that it may affect Gogo’s ability to process and accept the purchase order.

Contractor will comply with all laws and regulations applicable to Contractor in performing Contractor’s obligations under this Agreement and will cooperate, to the extent reasonably necessary, with Gogo, at no cost or charge to Gogo or United, for Gogo and Gogo subcontractors to comply with all laws and regulations applicable to Gogo and its subcontractors. Contractor will also provide Gogo or its subcontractors, at no cost or charge to Gogo or United, with access to the Equipped Aircraft and provide such assistance as Gogo reasonably requests to obtain and maintain any legally required certification of the Wi-Fi Equipment and Gogo Services at all times during the Term.

Contractor shall notify United and Gogo promptly when it becomes aware of any failure in performance, malfunction, defect, loss of or damage to the Wi-Fi Equipment with reasonable details (it being acknowledged that United may be precluded from claiming a breach of the warranty included in the United Wi-Fi Agreement without such information). Contractor shall not take any action that would (i) cause a failure or defect of the Wi-Fi Equipment by combining it with equipment, software, or services not supplied, authorized or specified by Gogo, (ii) cause Wi-Fi Equipment to be subjected to any misuse, neglect, accident or improper maintenance by Contractor or subcontractors, or (iii) cause an infringement or misappropriation of a third party’s intellectual. Property by combining the Wi-Fi Equipment with any content, materials, equipment or software provided by or on behalf of Contractor that is not authorized or approved by Gogo.

- 2 -

Contractor shall not itself nor knowingly permit any other party to, modify or tamper with the Wi-Fi Equipment, other than Gogo or its subcontractors.

In the event of a defect in the Wi-Fi Equipment covered by the warranty, Contractor agrees to use its commercially reasonable efforts to ship such Wi-Fi. Equipment to Gogo within forty-eight (48) hours if requested by Gogo to do so (and the reasonable shipping costs shall be reimbursed to Contractor by United).

For a period of time under the United Wi-Fi Agreement Gogo or its subcontractor will provide touch labor to correct any malfunctioning or defective Wi-Fi Equipment, including any associated software. Following the expiration of this initial warranty period, United may either (i) continue to have Gogo or its subcontractor provide touch labor or (ii) elect to provide touch labor for maintenance of Wi-Fi Equipment on Equipped Aircraft. Gogo may dispatch Gogo personnel or its subcontractors to the Contractor’s designated Wi-Fi Equipment maintenance location to troubleshoot maintenance issues with such Wi-Fi Equipment; the cost of such maintenance services shall be mutually agreed upon between United and Gogo and will be at United expense.

- 3 -

With respect to any Equipped Aircraft (leased by Contractor from third parties or owned by Contractor) that ceases operating as United Express service) unless otherwise agreed by United and Contractor at such time, Contractor acknowledges that United or its subcontractors may elect to de-install the Wi-Fi Equipment from such aircraft, at United’s expense. Contractor shall make the Equipped Aircraft available for such deinstallation services as and where reasonably required by United or Gogo, in a timely manner.

Contractor and United agree that in the course of performing this Amendment, each party will be bound by the non-disclosure agreement dated August 1, 2014 among United, Gogo and Contractor. Any confidential information of Gogo provided to Contractor by either United and/or Gogo shall be deemed Confidential Information of United for purposes of Article 11.7 of the Agreement

Contractor shall promptly notify United and Gogo of any damage (except normal wear and tear), destruction, loss (including after any event of default under a Contractor financing agreement that results in the loss of such Wi-Fi Equipment, including as a result of the foreclosure of any lien or the exercise of remedies by any financing party),

- 4 -

theft, or governmental taking of any Wi-Fi Equipment or spare parts in Contractor’s custody upon Contractor’s becoming aware thereof and, whether or not covered by Contractor’s insurance (“Event of Loss”). If an Event of Loss occurs, Contractor shall be responsible for the cost of any necessary repair or replacement of such Wi-Fi Equipment or spare parts unless such Event of Loss was caused by a defect or malfunction of such Wi-Fi Equipment. When an Event of Loss is caused by Contractor, such repair or replacement shall not be considered part of Gogo’s maintenance obligations, but Gogo or United may coordinate and oversee repair or replacement performed by a third-party on a “Pass Through Expenses” basis from United to Contractor as a set-off per the Agreement, or have such repair or replacement performed by Gogo at Gogo’s agreed-upon prices, in each case at Contractor’s expense.

- 5 -

United agrees to timely purchase and pay for all materials, consumables, equipment, shipping and reasonable labor costs for the installation project, including all engineering and certification services, necessary or appropriate to complete the installation of the Wi-Fi Equipment as quickly as possible. United will reimburse Contractor for those reasonable costs incurred by Contractor related to the items in this Section 15, provided that they have been approved by United in advance and in writing.

At United’s cost and expense, United may remove the Wi-Fi Equipment at any time, and upon any such removal, United shall repair any damage to the Contractor aircraft caused by such removal, except to the extent any such cost or expense is caused by or is resulting from the negligence or willful misconduct of Contractor or its agents, which shall be borne by Contractor.

- 6 -

Except as otherwise amended herein, the Agreement will remain in full force and effect. The terms of this Amendment, including any Attachments attached hereto, are deemed to be incorporated in, and made a part o1 the Agreement. In the case of any conflict between this Amendment and any prior Frmentiment3 to the Agreement duly executed by the parties, this Amendment shall control. This Amendment may be executed in any number of counterparts, by original or facsimile signature, each of which when executed and delivered shall be deemed an original and such counterparts together shall constitute one and the same instrument

[REMAINDER OF PAGE INTENTIONALLY LEFT BLANK; SIGNATURE PAGE ‘FOLLOWS]

- 7 -

IN WITNESS WHEREOF, the parties hereto have caused this Amendment to be duly executed in duplicate (each of which duplicates are deemed to be an original) by their duly authorized representatives as of the date first set forth above.

- 8 -

Attachment 1

- ▇ -

▇▇▇▇▇▇▇▇▇▇ ▇

- 10 -