Where does envoy airlines fly? Envoy Air Online Booking. Envoy Air Inc. previously known as American Eagle Airlines is an air carrier with head quarters located at Irving, Texas. The airline is a wholly owned subsidiary of American Airlines Group. With over 1,800 flights a day, Envoy Air serves 159 cities across the United States, Canada, Mexico and the Caribbean.Where does envoy fly? With over 1,800 flights a day, serving 159 cities across the USA, Canada, Mexico and the Caribbean, Envoy is considered to be the world's largest regional airline system. Envoy is an affiliate member of the Oneworld airline alliance.