American ???????????????????????????????? allows cancellations with full refunds within 24 hours of booking contact ????-????????????-????????????-????????????????. , provided your departure is at least two days away. You can get more details by calling their customer service at ????-????????????-????????????-????????????????.. American ???????????????????????????????? offers a 24-hour cancellation policy ????-????????????-????????????-????????????????. If you book a flight at least seven days before your departure and cancel it within 24 hours of booking ????-????????????-????????????-????????????????, you can receive a full refund without any cancellation fees.