American Airlines is set to stop serving its transborder route from Phoenix Sky Harbor International Airport (PHX) to General Mariano Escobedo International Airport (MTY) in Monterrey. Given Phoenix's relatively close proximity to the Mexican border, the country remains an important market for American outside of its Arizona hub. Simple Flying Quiz Think you really know American Airlines? Answer 10 questions and put your knowledge to the test Easy (15s) Medium (10s) Hard (5s) Start — QUESTION 1/1 Back Results 0 — Play AgainThink you really know American Airlines? In terms of lower frequencies, American is set to operate two flights a week from Phoenix to Ixtapa and Manzanillo throughout January.