The nearest airport is TGZ - Tuxtla Gutierrez Angel Albino Corzo, located 82.8 km east of San Martín.
Other airports nearby include MTT - Minatitlan (178.1 km north west), VSA - Villahermosa C P A Carlos Rovirosa Intl (178.5 km north east), TAP - Tapachula Intl (258.7 km south east), CME - Ciudad Del Carmen Intl (303.7 km north east),