American Airlines typically does not allow changes to a passenger's name on a ticket once it has been issued. If you’ve made a minor error, such as a typo, you may be able to correct it by contacting customer service. However, if you need to make a significant name change, like due to marriage or legal reasons, American Airlines generally requires you to cancel the existing booking and rebook a new ticket with the correct name. This process may incur cancellation fees or fare differences. For specific cases, it’s best to contact customer service to discuss your options.