It is important for smooth travel to know how to check in American Airlines. You can check in on the web or in the portable application 24 hours before takeoff, and the air airport kiosks or counters open no less than 2-3 hours preceding domestic flights and 3-4 hours before international. Plan on getting there early to get through security on time. Call +1-860-374-7569 or visit americanskytrip A little early check-in will give you a smooth experience and a chance to get your favourite seat.