Flight Indira Gandhi International Airport departs from Delhi Indira Gandhi International Airport at 03:00 and arrives at Mumbai Chhatrapati Shivaji International Airport at 05:20.
The flighttime is about 2h 20m. The distance travelled ("as the bird flies"): 544 Km. So the average speed is roughly 233 Km.
The best day to arrive at Delhi is Sunday and it would be best to avoid Monday, as prices are on average 41.53% higher than on Sunday. (Average prices, based on 6612130 datapoints.)
We have a lot more statistics for flights QF 5289 and between Delhi and Mumbai.