Flight Phuket International Airport departs from Phuket Phuket International Airport at 18:40 and arrives at Hong Kong Hong Kong International Airport at 23:15.
The flighttime is about 3h 35m. The distance travelled ("as the bird flies"): 1776 Km. So the average speed is roughly 496 Km.
There is an 1 hour time difference between Phuket and Hong Kong
