Ciudad del Carmen International Airport — Ciudad del Carmen, Mexico

Petroleum, not tourism, drives most of the traffic through CME, since Ciudad del Carmen anchors Mexico's offshore oil industry in the Bay of Campeche, one of the country's most productive drilling regions. Pemex, the state oil company, along with numerous international oilfield service firms, bases extensive helicopter operations here, ferrying workers out to platforms scattered across the Gulf of Mexico, a role that gives the airport unusually heavy helicopter traffic for its size. Fixed-wing flights connect the city with Mexico City, Villahermosa, and other regional centers, carrying oil executives and engineers alongside the comparatively modest number of leisure travelers visiting this island city linked to the mainland by bridges. The runway and apron infrastructure have been expanded over the years specifically to accommodate the steady demand generated by the offshore energy sector.