If you’re flying with a pet on American Airlines, the standard carry-on fee is $125 per kennel, each way. This fee applies to most flights within the U.S. and certain international routes. Make sure your pet’s carrier adheres to the airline’s size limits to travel in the cabin. With a restricted number of pets allowed per flight, securing your pet’s spot early is important. For exact details on fees and requirements, visit the American Airlines website or contact customer service to arrange your pet’s travel.