How to Change Americans Airl ines Flight American Airlines' flight change policy allows you to change flights and rebook at a later date. You can replace it for free or for a fee as shown below. American Airlines will not charge any replacement cost (except for Basic Economy). Some short international flights. During the COVID19 epidemic, American Airlines, like many other airlines, offered travelers more flexibility, and American Airlines changed its cancellation and cancellation policy after restrictions were lifted. The following are the current American Airlines change rules: As long as you're traveling outside of the major economy, change fees are waived on all domestic and short-haul international flights, as well as certain long-haul international flights. Fundamental Economy ticket prices purchased after 2021 April 1, are nonrefundable and non-exchangeable. For all domestic flights, this includes standby flights if you choose to make an earlier trip to the same location on the same day.