Flight Chhatrapati Shivaji International Airport departs from Mumbai Chhatrapati Shivaji International Airport at 21:15 and arrives at Delhi Indira Gandhi International Airport at 23:25.
The flighttime is about 2h 10m. The distance travelled ("as the bird flies"): 544 Km. So the average speed is roughly 251 Km.
The best day to arrive at Mumbai is Wednesday and it would be best to avoid Tuesday, as prices are on average 157.7% higher than on Wednesday. (Average prices, based on 6667030 datapoints.)
We have a lot more statistics for flights 6E 102 and between Mumbai and Delhi.