No, American Airlines (AA) does not automatically check you in for your flights in 2026. Passengers are still required to manually initiate the check-in process starting 24 hours before the scheduled departure time. This can be done via the American Airlines mobile app, their website, or at an airport kiosk. The only slight exception is for those who have opted into "Automatic Check-In" notifications via the app, which will send a prompt or push notification as soon as the 24-hour window opens, but the user must still click to confirm their health and hazardous materials declarations. By 2026, American has leaned heavily into "Biometric Boarding" at major hubs like DFW and MIA, where your face acts as your boarding pass, but the initial check-in step remains a mandatory regulatory requirement for the passenger to confirm they are actually intending to travel and to provide any necessary final document verification for international routes.