Flight Indira Gandhi International Airport departs from Delhi Indira Gandhi International Airport at 23:30 and arrives at Mumbai Chhatrapati Shivaji International Airport at 01:55.
The flighttime is about 2h 25m. The distance travelled ("as the bird flies"): 544 Km. So the average speed is roughly 225 Km.
The best day to arrive at Delhi is Wednesday and it would be best to avoid Tuesday, as prices are on average 17.62% higher than on Wednesday. (Average prices, based on 6622678 datapoints.)
We have a lot more statistics for flights 6E 519 and between Delhi and Mumbai.
