Description
If you miss your American Airlines flight, you may be rebooked on the next available flight, though an extra fee might apply. If the missed flight is due to an airline issue, they’ll typically rebook you at no cost. Failing to show up without prior notice can lead to your ticket being canceled, with no refund. Same-day standby may be offered depending on availability. For the most accurate options, contacting American Airlines directly is the best approach.
https://gethumandesk.com/blog/american-airlines-missed-flight-policy/