Flight Chhatrapati Shivaji International Airport departs from Mumbai Chhatrapati Shivaji International Airport at 14:40 and arrives at Bangkok Suvarnabhumi Airport at 20:15.
The flighttime is about 4h 05m. The distance travelled ("as the bird flies"): 3097 Km. So the average speed is roughly 758 Km.
There is an 1.5 hour time difference between Mumbai and Bangkok