American Airlines' cancellation policy allows for a full refund for most tickets within 24 hours of purchase, provided the booking was made at least two days before departure. Call at +1-888-415-1245 (US) or +44-203-869-5245 (UK) After this period, refunds depend on the ticket type; refundable tickets offer free changes or cancellations, while non-refundable tickets may incur a fee and fare difference, though fees were eliminated for most standard domestic and international tickets. Call at +1-888-415-1245 (US) or +44-203-869-5245 (UK) For non-refundable tickets outside the 24-hour window, you can receive a trip credit or flight credit if you cancel before the first flight.