Flight Sheremetyevo International Airport departs from Moscow Sheremetyevo International Airport at 08:10 and arrives at Phuket Phuket International Airport at 21:00.
The flighttime is about 8h 50m. The distance travelled ("as the bird flies"): 6492 Km. So the average speed is roughly 735 Km.
There is an 4 hour time difference between Moscow and Phuket