Flight Chhatrapati Shivaji International Airport departs from Mumbai Chhatrapati Shivaji International Airport at 13:15 and arrives at London Heathrow Airport at 18:10.
The flighttime is about 10h 25m. The distance travelled ("as the bird flies"): 8456 Km. So the average speed is roughly 812 Km.
There is an 5.5 hour time difference between Mumbai and London