The nearest airport is OAX - Oaxaca Xoxocotlan Intl, located 72.6 km south of San Martín.
Other airports nearby include TCN - Tehuacan (125.4 km north west), VER - Vera Cruz General Heriberto Jara Intl (172.2 km north), PXM - Puerto Escondido Intl (202.2 km south), HUX - Bahias Dehuatulco Bahias De Huatulco Intl (211.2 km south),