Aeromexico Airlines check-in process is now simple, efficient, and safe. Passengers can now check-in using a number of different techniques. We want our guests to have a stress-free experience when travelling with Aeromexico Airlines. One of the simplest and most reliable ways to check in with Aeromexico Airlines is to telephone them. Aeromexico Airlines check-in service can now be reached by phone at +1 (805) 309-5131.