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11hr 35min to 12hr 20min London Heathrow (LHR) to Hong Kong (HKG) by a nonstop flight operated by Air New Zealand, British Airways, Cathay Pacific Airways, Qantas Airways or Virgin Atlantic.
The flightpath departs Hong Kong to the Northwest over the Mongolian Desert in China. This overflies Russian territory near Kazakhstan, until reaching Eastern and Western Europe. The flightpath is very dangerous, to say the least.
3hr 35min to 3hr 40min Hong Kong (HKG) to Phuket, Thailand (HKT) by a nonstop flight operated by Air New Zealand, Cathay Pacific Airways, Dragonair or Thai Airways.
3hr 25min to 3hr 45min Seoul Incheon (ICN) to Hong Kong (HKG) by a nonstop flight operated by Asiana Airlines, Cathay Pacific Airways, Korean Air or Thai Airways.
Good its 5995 miles or about 13 hours flying I recommend Cathy Pacific or British Airways
4hr 45min to 5hr 05min DEL to HKG by a nonstop flight operated by Air India, Cathay Pacific Airways or Jet Airways.
Hong Kong (HKG) to Bangkok (BKK)Shortest Flight Duration 2 hours 40 mins02hr 30min to 02hr 45min Hong Kong (HKG) to Bangkok (BKK) by a nonstop flight operated by Air New Zealand, Bangkok Airways, Cathay Pacific Airways, China Airlines, Emirates Airlines, SAS Scandinavian Airlines System, or Thai Airways.
It really depends, a flight from London (LHR) to Hong Kong is around 11:50 minutes, so it could be the same.
Shortest Flight Duration 11 hours 40 mins*The distance between London and Hong Kong is 6052 miles (9740 km).
Hong Kong Airways was created in 1947.
Hong Kong Airways ended in 1959.
A random search for flights from Ho Chi Minh City (Saigon) (SGN) to London Heathrow (LHR) shows: OPTION 1: 16hr 25min via Doha (DOH) SGN - DOH Qatar Airways Flt 689 Dep 08:30pm 16Oct,Fri DOH - LHR Qatar Airways Flt 075 Dep 01:30am 17Oct,Sat Total Trip Time: 16hr 25min OPTION 2: 16hr 40min via Hong Kong (HKG) SGN - HKG British Airways Flt 4588 Dep 06:55pm 15Oct,Thu HKG - LHR British Airways Flt 0032 Dep 11:40pm 15Oct,Thu Total Trip Time: 16hr 40min