The U.S. Court of Appeals for the Eleventh Circuit ruled in favor of Grupo Aeroméxico and Delta Air Lines, vacating the U.S. Department of Transportation’s September 2025 order terminating approval of their nearly 10-year-old joint venture and its antitrust immunity. The partnership allows the airlines to coordinate scheduling, pricing and capacity on U.S.-Mexico flights, and will remain in effect, supporting broader network coverage, more service options and competition for travelers. The court previously said the Transportation Department had not adequately explained its narrower market analysis or why it applied requirements not imposed on similar ventures, including the United Airlines-ANA partnership in Japan, describing the action as "arbitrary and capricious." Delta owns a 20% stake in Aeroméxico. Aeroméxico said it is reviewing the court’s opinion and potential next steps with Delta and its legal advisers and will inform the market of material developments.