Overview

• Delta Air Lines and Aeroméxico filed their challenge in September, and the appeal became public on October 10.
• The U.S. Department of Transportation revoked the alliance’s antitrust immunity and ordered the venture dissolved by January 1, 2026.
• Regulators cited persistent anticompetitive effects and concerns over Mexico’s slot allocation at congested airports as key reasons.
• U.S. Transportation Secretary Sean P. Duffy also pointed to Mexico’s 2022 shift of cargo operations from AICM to AIFA as part of the dispute.
• Aeroméxico criticized the decision and is proceeding with a dual listing that includes a Mexican IPO on October 13 with a simultaneous U.S. offering.