Gibraltar International Airport or North Front Airport is the civilian airport that serves the British overseas territory of Gibraltar. The runway is owned by the Ministry of Defence for use by the Royal Air Force as RAF Gibraltar. Civilian operators use the civilian-operated terminal. National Air Traffic Services hold the contract for provision of air navigation services at the airport.

The runway of Gibraltar Airport passes through the main highway of the city and the airport building is only 500 meters from the center of Gibraltar so , this highway must be closed for the arrival of any landing or takeoff of any aircraft.Gibraltar Airport is one of the strangest airports in the world and currently has flights to four destinations in the UK and two destinations in Spain.

The airport was constructed during World War II upon the territory's race course (introduced by the Maltese), when Gibraltar was an important naval base for the British. Opened in 1939, it was only an emergency airfield for the Royal Navy's Fleet Air Arm. However, the runway was later extended by reclaiming some land from the Bay of Gibraltar using rock blasted from the Rock of Gibraltar while carrying out works on military tunnels.This last major extension of the runway allowed larger aircraft to land at Gibraltar.

More Info: en.wikipedia.org