American Airlines’ cancellation policy varies depending on the type of ticket purchased. For refundable tickets, passengers can cancel at any time and receive a full refund to the original payment method. Non-refundable tickets, typically for basic economy fares, can be canceled, but no cash refund is provided. Instead, travelers are issued a travel credit for future flights. If you cancel within 24 hours of booking, American Airlines offers a full refund regardless of ticket type, as long as the booking was made at least two days before the flight. Additionally, cancellations due to airline issues or disruptions generally qualify for refunds.

https://support.google.com/voice/thread/305875349?hl=en&sjid=7737501224668000854-AP