AeroMexico allows pets to travel only on flights under 6 hours. In cabin: Pets allowed within Mexico and to/from the USA, Canada, and Central and South America. As checked: Pets are allowed in the cargo hold, if your dog, cat, or chicken weighs less than 100 lb (45 kg), including the weight of the carrier. As cargo: If your pet weighs more than 100 lb (45 kg) including the weight of its carrier, or if you wish to ship another type of animal, please call the Cargo Department toll free at 1 (800) 368-4226 for more information. Snub-nosed or short-snouted pets are not permitted aboard as they may endure difficulty breathing which may cause excessive stress for the animal. These breeds may travel on Aeromexico Cargo.