1. 1Visit aa.com or open the American Airlines app.
2. 2Enter your confirmation code or AAdvantage number.
3. 3Select passengers to check in.
4. 4Choose or confirm your seat assignment.
5. 5Add any bags or extras.
6. 6Download or print your boarding pass.

Booking confirmation code, passport for international flights, visa if required, and U.S. Resident Card if applicable.

Seat selection is available during check-in. You can pay for preferred, Main Cabin Extra, or First Class seats, or wait until 24 hours before the flight when you check in to select from remaining seats.

Check-in closes 90 minutes before international flights. Passport details are required. If your destination requires specific travel documents or a visa, you must check in at the airport counter for document verification.

Groups of 10 or more can book together. For standard check-in, multiple passengers on the same reservation can check in together using the confirmation code.

1. 1'Unable to check in online' - May require document verification at the airport for international flights.
2. 2'Cannot change reservation' - Once checked in, changes must be made by contacting Reservations.
3. 3'Boarding pass not available' - Some international flights require a printed boarding pass at the airport.