Changing a passenger name on a flight with American Airlines is generally not allowed, as airline tickets are issued with specific passenger details. However, if there is a minor typo in the name, American Airlines may allow a correction with proper documentation, such as identification proof. For significant name changes, such as after a marriage or legal name change, you would need to contact customer service. In some cases, a name change may require canceling the original ticket and purchasing a new one. Always check American Airlines' policies and consult their support team for guidance on specific situations.