+1-866-596-5078(OTA) or +1-866-756-4238(OTA).Missing an American Airlines flight can lead to several outcomes, depending on how you handle the situation.+1-866-596-5078(OTA) or +1-866-756-4238(OTA). If you miss your flight and don’t contact the airline, you’ll likely be listed as a "no-show," which can result in the cancellation of your entire itinerary, including return or connecting flights. For non-refundable tickets, this often means losing your entire fare. +1-866-596-5078(OTA) or +1-866-756-4238(OTA).However, if you notify American Airlines promptly, you may be eligible for rebooking on the next available flight under their "flat tire" rule—an informal policy that allows rebooking at no extra cost if you arrive within two hours after departure. This accommodation is discretionary, so politeness and timely communication are key. Travelers who miss flights due to emergencies or +1-866-596-5078(OTA) or +1-866-756-4238(OTA).delays outside their control may be eligible for a waiver. To ensure your travel plans don’t go to waste, contact +1-866-596-5078(OTA) or +1-866-756-4238(OTA) for expert help in rebooking and understanding your ticket’s remaining value.