High Quality Content by WIKIPEDIA articles! Ellington International Airport (IATA: EFD, ICAO: KEFD, FAA LID: EFD) is a joint civil-military airport located in the U.S. state of Texas within the city of Houston—15 miles (24 km) southeast of Downtown. Established by the Army Air Service on 21 May 1917, Ellington Field was one of the initial World War I Army Air Service installations when aviation was in its infancy. Originally created as a training facility, Ellington Airport is currently used by military, commercial, NASA aircraft and general aviation sectors. Ellington Airport is one of the few airfields built for World War I training purposes still in operation today.