When cancelling your reservation with American Airlines, the primary concern will be the type of ticket you have booked. The One-world alliance's founding member offers paper and electronic tickets in various flight classes. One can, however, modify or cancel their reservation online. Itineraries for some paper tickets may need to be called in or picked up in person by an agent. You have a year to change your mind if you wish to utilise the credit toward another flight, according to the American Airlines official website. You may find information How to cancel American Airlines flight here. Do you qualify for a reimbursement? If so, please allow seven to twenty business days for delivery. the quantity. If there are any questions about American Airlines' refund policy in the event of a flight cancellation, customers can call their customer service line or visit the airline's website for further information.