Flight Phuket International Airport departs from Phuket Phuket International Airport at 21:35 and arrives at Beijing Beijing Capital International Airport at 04:15.
The flighttime is about 5h 40m. The distance travelled ("as the bird flies"): 2224 Km. So the average speed is roughly 392 Km.
There is an 1 hour time difference between Phuket and Beijing
