Flight Chhatrapati Shivaji International Airport departs from Mumbai Chhatrapati Shivaji International Airport at 00:40 and arrives at Hanoi Noi Bai International Airport at 07:10.
The flighttime is about 5h 00m. The distance travelled ("as the bird flies"): 3662 Km. So the average speed is roughly 732 Km.
There is an 1.5 hour time difference between Mumbai and Hanoi