American Flight Cancellation PolicyAmerican Cancellation Policy After 24 HoursIf you’ve booked a flight with American and need to cancel for whatever reason, you may do so using American Flight Cancellation Policy after 24 hours. This may be done by filing an American Cancellation Request for an American reservation made within 24 hours of the initial ticket reservation, as long as the departure date is 7 days or later from the purchase date.This is a risk-free measure, and travelers who cancel within 24 hours do not have to pay a cancellation charge. If a ticket is cancelled after 24 hours, the passenger is responsible for the cancellation cost. In compliance with American cancellation policy, full refunds are offered for refundable tickets.