Hong Kong International Airport is the main airport in Hong Kong. It is located on the island of Chek Lap Kok, which largely comprises land reclaimed for the construction of the airport itself. The airport is also colloquially known as Chek Lap Kok Airport, to distinguish it from its predecessor, the closed Kai Tak Airport. HKIA is an important contributor to Hong Kong's economy, with approximately 65,000 employees. More than 100 airlines operate flights from the airport to over 180 cities across the globe.