American Airlines check-in is an important step passengers must complete before their flight. There are several ways to check in, including online, through the mobile app, at airport kiosks, or at the check-in counters. Online check-in is the easiest and fastest method. It usually opens 24 hours before the scheduled departure time and closes 45 minutes before domestic flights or 60 minutes before international flights. To check in online, passengers visit the American Airlines website or use the mobile app. They enter their booking reference or ticket number along with personal information. After completing check-in, passengers can download, print, or save their boarding pass on their mobile device. Having a boarding pass ready before arriving at the airport helps avoid long lines and speeds up the process. Passengers who prefer not to check in online can use airport kiosks or visit the check-in counters. Airport kiosks are self-service machines where passengers can enter their booking details, print boarding passes, and tag checked baggage. Check-in counters are staffed by airline employees who assist with check-in, baggage drop, and any special requests. It is important to arrive at the airport early to allow enough time for check-in, baggage drop, security, and boarding. Passengers traveling with checked luggage must complete check-in before dropping off their bags. American Airlines usually requires passengers to drop off checked bags at least 45 minutes before domestic flights and at least 60 minutes before international flights. Carry-on baggage rules vary depending on the fare and destination, but generally, passengers are allowed one carry-on bag and one personal item free of charge. It is important to review baggage size and weight limits to avoid extra fees at the airport. Some passengers may be eligible for priority check-in, which allows them to check in at special counters or use faster lanes. Priority check-in is available for premium cabin passengers, elite status members, and those who purchase priority services. Families traveling with small children or passengers needing special assistance can request help during check-in. American Airlines staff will provide necessary support to ensure a smooth experience. Passengers must have valid identification and travel documents ready at check-in. For international flights, a passport and any required visas or entry permits are mandatory. American Airlines will check these documents during the check-in process. If passengers have connecting flights, it is important to check if separate check-in is required for each flight or if through check-in is available. The airline provides information about this when booking or during check-in. Passengers should double-check all flight information, names, and dates when checking in. Errors may cause problems at the airport or delays in boarding. Changes to passenger details or flights after check-in may incur fees. In case of flight changes or cancellations, American Airlines usually allows passengers to rebook or get a refund according to their ticket type and airline policies. In summary, American Airlines check-in can be done online, via the app, at kiosks, or at counters. Online check-in opens 24 hours before departure and closes close to flight time. Passengers should have their boarding pass and documents ready, drop off checked bags on time, and follow baggage rules. Priority check-in and assistance are available for eligible passengers. Checking in early helps avoid stress and makes the travel experience smoother. Understanding the check-in process ensures a better start to any American Airlines trip.