If you plan to book your upcoming flight with one of the country's most reputable airlines, American Airlines, then you must be aware of all the American Airlines check-in information and options before continuing. The American Airlines check-in policy is specifically designed to improve customer satisfaction. Now, a single check-in time is purely dependent on the option selected by the flyer. You can use American Airlines 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 equally even if your next flight is more than a day away. Keep in mind  that for international flights, online and app check-in closes one and a half hours before departure. If you want any further information regarding American airlines baggage policy, cancellation policy, American airlines name change policy, etc. then visit our website today!