https://community.servicetitan.com/t5/General-Office/1-833-816-0098-American-Airlines-flight-change-policy-Flight/m-p/67735#M10208
(+1)-833-816-0098 American Airlines flight change policy [Flight~Change@Policy!!
All tickets are fully refundable within the first 24 hours after booking if your departure date is more than two days in the future.
Nonrefundable tickets can be changed or canceled without a fee, but you won't receive a refund.
#americanairlinesflightchange