American Airlines provides a flexible flight change policy, allowing passengers to modify their travel plans under certain conditions. For most domestic and short-haul international flights, no change fees apply, but passengers must pay any fare difference. Basic economy tickets are generally non-changeable unless they qualify under specific conditions. Same-day flight changes are possible for a fee, with waived charges for AAdvantage elite members. Changes can be made through the airline's website, mobile app, or customer service.
https://www.flightaura.com/fli....ght-change-policy/am



