Flight Phuket International Airport departs from Phuket Phuket International Airport at 21:45 and arrives at Melbourne Melbourne Airport at 10:05.
The flighttime is about 8h 20m. The distance travelled ("as the bird flies"): 5479 Km. So the average speed is roughly 657 Km.
There is an 4 hour time difference between Phuket and Melbourne
