Flight Hong Kong International Airport departs from Hong Kong Hong Kong International Airport at 08:20 and arrives at Phuket Phuket International Airport at 10:50.
The flighttime is about 3h 30m. The distance travelled ("as the bird flies"): 1776 Km. So the average speed is roughly 507 Km.
There is an 1 hour time difference between Hong Kong and Phuket
THB
