Cavern City Air Terminal (IATA: CNM, ICAO: KCNM, FAA LID: CNM) is a public use airport in Eddy County, New Mexico, United States. It is owned by the city of Carlsbad and located five nautical miles (6 mi, 9 km) southwest of its central business district. The airport is served by one commercial airline, with scheduled passenger service subsidized by the Essential Air Service program.