Flight Phuket International Airport departs from Phuket Phuket International Airport at 15:30 and arrives at Taipei Taoyuan International Airport at 21:00.
The flighttime is about 4h 30m. The distance travelled ("as the bird flies"): 2601 Km. So the average speed is roughly 578 Km.
There is an 1 hour time difference between Phuket and Taipei