The cost to change a flight on American Airlines

The cost to change a flight on American Airlines depends on several factors, including the type of ticket purchased, the route, and timing of the change. For many domestic and short-haul international flights, there are no change fees for Main Cabin, Premium Economy, or higher fare classes. However, passengers may be required to pay the difference in fare if the new flight is more expensive. Basic Economy tickets are typically non-changeable, but exceptions may apply due to special circumstances or promotions. It’s recommended to review your specific fare rules or check with American Airlines directly for up-to-date policies.

Source: https://www.40plusdoubledutchclub.org/forum/general-discussion/expedia-24-hour-faqs