To where?
The flight time from the England to Hong Kong is around 11-12 hours direct depending on the airline you use.
It depends how long you stay in Hong Kong.
Fly on a plane. There are direct flights to Taiwan, or you can fly to Hong Kong and take the Ferry to Taiwan. There is no Ferry from Hong Kong to Taiwan. It is still necessary to take plane from Hong Kong to Taiwan (about 1.5 hours)
16h30
Suppose you are to fly from Hong Kong to Toronto, it would take about 15 hours by 747.
About 12 hours.
4x daily between Hong Kong and london/Heathrow.
14hours
3 hours
15 hours
== == 12 hours
3.8 seconds