Having been in commercial operation since 1998, Chek Lap Kok Airport is an important regional trans-shipment centre, passenger hub and gateway for destinations in China (with 45 destinations) and the rest of Asia. The airport is the world's busiest cargo gateway and one of the world's busiest passenger airports. It is also home to one of the world's largest passenger terminal buildings (the largest when opened in 1998).

The airport is operated by the Airport Authority Hong Kong 24 hours a day and is the primary hub for Cathay Pacific (the flag carrier of Hong Kong), Cathay Dragon, Hong Kong Airlines, HK Express and Air Hong Kong (cargo carrier). The airport is one of the hubs of Oneworld alliance, and also one of the Asia-Pacific cargo hubs for UPS Airlines. It is a focus city for many airlines, including China Airlines and China Eastern Airlines. Singapore Airlines, Ethiopian Airlines and Air India all utilise Hong Kong as a stopover point for their flights.

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. Since 2010, it has also surpassed Memphis International Airport to become the world's busiest airport by cargo traffic.

The airport is managed and operated by the Airport Authority Hong Kong (AA), which was established on 1 December 1995. To facilitate the increased traffic due to the third runway, Terminal 2 is currently under maintenance of adding a departures and arrivals section with immigration and will not be reopening until at least 2024.

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According to Wikipedia