Pets − Travel information − American Airlines
American Airlines Cargo offers the American PetEmbark™ service for pets that don't qualify to travel as carry-on or checked pets. Ship your pet through American PetEmbark™. Kennel guidelines for checked pets. Aircraft type. Maximum kennel height. A321T. 46 inches / 117 cm. B737-800. 28 inches / 71.12 cm.