Chek Lap Kok is an island in the western waters of Hong Kong's New Territories. Unlike the smaller Lam Chau, it was only partially leveled when it was assimilated via land reclamation into the 12.48-square-kilometre (4.82 sq mi) island for the current Hong Kong International Airport, which opened for commercial aviation in 1998. The airport is popularly referred to as Chek Lap Kok Airport to distinguish it from the former Hong Kong International Airport, now commonly known as Kai Tak Airport.
Hong Kong SkyCity, a business and entertainment complex, is also located on Chek Lap Kok. It includes AsiaWorld–Expo, a convention and exhibition centre, which opened in 2005. Cathay Pacific City, the head office of Cathay Pacific; HAECO, and formerly Hong Kong Airlines are also located on the airport platform.