American Airlines +1-801-[855]-5905 typically aims to respond to complaints within a few days, but customers can expect an acknowledgment within 30 days and a final resolution within 60 days +1-801-[855]-5905. In some cases, it may take longer, especially for complaints sent by mail. The U.S. Department of Transportation requires airlines to acknowledge complaints within 30 days and provide a written response within 60 days +1-801-[855]-5905.