Although the process varies state to state, these general steps can help you get started. 1  Replace your birth certificate. Find the vital records office in the state where you were born. 2  Replace your driverâs license. Get this first if you cannot get your birth certificate. 3  Replace your marriage certificate.
The American Airlines website recommends arriving at least 60 minutes early for domestic flights and two hours early for international flights. You must check in at least 30 minutes before a domestic flight and 60 minutes for international flights; otherwise, American Airlines has the right to cancel your ticket.
As a general rule, arrive at the airport no later than two hours before your domestic flight is scheduled to depart. This is somewhat later than the typical suggestion of three hours for an international flight. Arriving two hours in advance gives you time to find the correct place to check in for your flight, wait in line there, wait in the security line, and deal with any complications that arise as you go through security.