You cannot change the name on an American Airlines ticket. Tickets are non-transferable, and the name must match the passenger’s ID. If there’s a minor typo, contact customer service for corrections. For bigger changes, you may need to cancel and rebook the ticket under the correct name.
Source: https://discuss.ai.google.dev/t/can-i-change-the-name-on-an-american-airlines-ticket/50524