Flight Kuala Lumpur International Airport departs from Kuala Lumpur Kuala Lumpur International Airport at 15:20 and arrives at Phuket Phuket International Airport at 15:45.
The flighttime is about 1h 25m. The distance travelled ("as the bird flies"): 391 Km. So the average speed is roughly 276 Km.
There is an 1 hour time difference between Kuala Lumpur and Phuket