Flight Chhatrapati Shivaji International Airport departs from Mumbai Chhatrapati Shivaji International Airport at 23:35 and arrives at Bangkok Suvarnabhumi Airport at 05:35.
The flighttime is about 4h 30m. The distance travelled ("as the bird flies"): 3097 Km. So the average speed is roughly 688 Km.
There is an 1.5 hour time difference between Mumbai and Bangkok