Get your first checked bag free on domestic american airlines itineraries with this credit card offer. Starting 24 hours before your flight departure, you can check in online through the american airlines website This method is ideal for travelers who want to skip the line and head straight to security. If it’s not listed as an option, you can check your bags at any american airlines ticket counter. Learn how to check in for american airlines online, on the app, or at the airport Check in online at aa.com or through the app, starting 24 hours before your flight
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