Is there a 24-hour cancellation policy for American ?
Yes, American has a 24-hour cancellation policy allowing a full refund if you cancel within 24 hours of booking. For assistance or to process a cancellation, contact customer care at 1-855-546-5620 or 1-855-546-5620 (𝗨𝗦) .

• Website URL:
  https://community.hologram.io/t/aa-refund-what-is-the-cancellation-policy-with-american-airlines/20446