American Airlines Flight Change, at the airport (at the self-service kiosk or ticket counter) or call AA Reservations. If you still want to try for a different flight, same-day standby lets you standby for an earlier American or American Eagle flight (with the same routine on your day of departure).
American Airlines allows same-day flight change on domestic flights. For a $75 fee, you can get a confirmed seat on a different flight (known as a confirmed same-day flight change). If a seat is not available, you can opt for standby status instead (unconfirmed same-day flight change). If you are not allocated a seat on a standby flight, the $75 fee is refunded.
American charges a whopping $200 change or cancellation fee on most paid fares (excluding full-fare refundable tickets) for domestic flights. This climbs as high as $750 per passenger for international flights. Same-day charges start at $75 for domestic and short-haul international flights in economy class.
You can request American Airlines standby or confirmed flight changes online, by phone, at an airport check-in kiosk, or at the ticket counter 24 hours prior to departure.
Those traveling with American Airlines can change their AA flight reservations, but it incurs a service charge. They can call American Airlines Reservations Number to change their ticket at any time of day at the following numbers:
English: 800-433-7300 or +1 833 584-08-69