Flight Chhatrapati Shivaji International Airport departs from Mumbai Chhatrapati Shivaji International Airport at 03:55 and arrives at Phuket Phuket International Airport at 10:05.
The flighttime is about 4h 40m. The distance travelled ("as the bird flies"): 2818 Km. So the average speed is roughly 604 Km.
There is an 1.5 hour time difference between Mumbai and Phuket