September 21, 2007 Via U.S. Mail and Facsimile Brian Dunne Executive Vice-President and Chief Financial Officer ACE Aviation Holdings Inc. 5100 de Maisonneuve Boulevard West Montreal, Quebec, Canada H4A 3T2 RE:		ACE Aviation Holdings Inc. Form 40-F for Fiscal Year Ended December 30, 2006 Filed March 30, 2007 Form 6-K filed August 14, 2006 		File No. 0-51034 Dear Mr. Dunne: We have limited our review of your above filings to disclosure relating to your contacts with a country that has been identified as a state sponsor of terrorism, and we have the following comments. Our review with respect to this issue does not preclude further review by the Assistant Director group with respect to other issues. At this juncture, we are asking you to provide us with supplemental information, so that we may better understand your disclosure. Please be as detailed as necessary in your response. After reviewing this information, we may raise additional comments. Please understand that the purpose of our review process is to assist you in your compliance with the applicable disclosure requirements and to enhance the overall disclosure in your filings. We look forward to working with you in these respects. We welcome any questions you may have about our comments or on any other aspect of our review. Feel free to call us at the telephone numbers listed at the end of this letter. General 1. We note the disclosure on page 12 of your Form 6-K that your majority-owned subsidiary, Air Canada, flies to Cuba. Cuba is identified as a state sponsor of terrorism by the U.S. Department of State and subject to U.S. sanctions and export controls. Your Form 40-F does not include any information on Air Canada`s Cuban operations. Please describe for us your past, current, and anticipated operations in, and other contacts with, Cuba, whether through subsidiaries or other direct or indirect arrangements. Your response should include discussion of whether you have offices, facilities, sales agents, or other employees in Cuba, and the extent to which your dealings or arrangements have been with the government of Cuba, or entities affiliated with or controlled by that government. 2. Please discuss the materiality of the operations and other contacts described in response to the foregoing comment, and whether they would constitute a material investment risk for your security holders. You should address materiality in quantitative terms, including the approximate dollar amounts of any associated revenues, assets, and liabilities for the past three years concerning Cuba. Please also address materiality in terms of qualitative factors that a reasonable investor would deem important in making an investment decision, including the potential impact of corporate activities upon a company`s reputation and share value. We note, for example, that Arizona and Louisiana have adopted legislation requiring their state retirement systems to prepare reports regarding state pension fund assets invested in, and/or permitting divestment of state pension fund assets from, companies that do business with countries identified as state sponsors of terrorism. The Missouri Investment Trust has established an equity fund for the investment of certain state-held monies that screens out stocks of companies that do business with U.S.-designated state sponsors of terrorism. The Pennsylvania legislature has adopted a resolution directing its Legislative Budget and Finance Committee to report annually to the General Assembly regarding state funds invested in companies that have ties to terrorist-sponsoring countries. Florida requires issuers to disclose in their prospectuses any business contacts with Cuba or persons located in Cuba. Your materiality analysis should address the potential impact of the investor sentiment evidenced by such actions directed toward companies that have operations associated with Cuba. Your qualitative materiality analysis also should address whether, and the extent to which, the government of Cuba or persons or entities controlled by or affiliated with that government, receive cash or act as intermediaries in connection with your operations. * * * * * Please respond to these comments within 10 business days or tell us when you will provide us with a response. Please submit your response letter on EDGAR. We urge all persons who are responsible for the accuracy and adequacy of the disclosure in the filings to be certain that the filings include all information required under the Exchange Act of 1934 and that they have provided all information investors require for an informed investment decision. Since the company and its management are in possession of all facts relating to the company`s disclosure, they are responsible for the accuracy and adequacy of the disclosures they have made. In connection with responding to our comments, please provide, in writing, a statement from the company acknowledging that: * the company is responsible for the adequacy and accuracy of the disclosure in the filings; * staff comments or changes to disclosure in response to staff comments do not foreclose the Commission from taking any action with respect to the filings; and * the company may not assert staff comments as a defense in any proceeding initiated by the Commission or any person under the federal securities laws of the United States. In addition, please be advised that the Division of Enforcement has access to all information you provide to the staff of the Division of Corporation Finance in our review of your filings or in response to our comments on your filings. Please understand that we may have additional comments after we review your response to our comments. Please contact Pradip Bhaumik, Attorney-Advisor, at (202) 551-3333 if you have any questions about the comments or our review. You may also contact me at (202) 551- 3470. 								Sincerely, 								Cecilia Blye, Chief 								Office of Global Security Risk cc: 	Jack McLean 		Controller 		ACE Aviation Holdings Inc. 		Fax: (204-941-2402) 		Max Webb 		Assistant Director 	Division of Corporation Finance Brian Dunne ACE Aviation Holdings Inc. September 21, 2007 Page 1