Rules for American Airlines flight check-in. You can check in online or using the mobile app starting 24 hours before and up to 45 minutes before departure of the first flight in your itinerary. This applies even if you have a connecting flight that's more than a day away.

You can check in for your trip, add bags, choose your seat and more online or in the American app. Find your trip using your confirmation code or log in to your AAdvantage account.

Learn how to print bag tags faster and spend less time waiting in line at American Airlines kiosks. This article explains the new online check-in option and its benefits for customers and the airline.

Download the American Airlines app to access your trip details, mobile boarding pass, flight updates, and more. You can also request upgrades, change seats, track your bag, and use Wi-Fi on flights with the app.

Check in beginning 24 hours and up to 45 minutes before your flight (90 minutes for international).

Find your trip on aa.com to check in online, change or cancel your reservation, add special requests, and redeem Trip or Flight Credit.

Learn how to check in online, mobile, curbside, kiosk, or ticket counter for your American Airlines flight. Find out the check-in deadlines, baggage rules, seat assignment fees, and more.

Learn how to check in online or from the app, and when to arrive at the airport for your flight. Find out the check-in times, baggage limits and travel restrictions for your destination.

American Airlines makes it easy to check in online, so you can skip the line at the airport. If you've never checked in online before, KnownInsiders will show you the ropes. 1. Access the American Airlines Website or Mobile App. 2. Log in or Retrieve Your Reservation. 3. Select the Check-in Option. 4. Review and Confirm Your Flight Information. 5.