Hong Kong International Airport (IATA code: HKG) is the main airport in Hong Kong and is located on the island of Chek Lap Kok, land which has mainly been reclaimed explicitly for the building of the airport itself. The airport has been in operation since its completion in 1998 when it took over from its predecessor, Kai Tak Airport, as Hong Kong’s main airport. The construction of the airport cost over $20 billion and increased the land mass of Hong Kong by 1%.