Flight Pudong International Airport departs from Shanghai Pudong International Airport at 15:40 and arrives at Phuket Phuket International Airport at 19:55.
The flighttime is about 5h 15m. The distance travelled ("as the bird flies"): 2707 Km. So the average speed is roughly 516 Km.
There is an 1 hour time difference between Shanghai and Phuket