The nearest airport is TGZ - Tuxtla Gutierrez Angel Albino Corzo, located 47.1 km north east of San Martín.
Other airports nearby include TAP - Tapachula Intl (185.4 km south east), VSA - Villahermosa C P A Carlos Rovirosa Intl (203.2 km north), MTT - Minatitlan (250.3 km north west),