Flight Indira Gandhi International Airport departs from Delhi Indira Gandhi International Airport at 05:25 and arrives at Mumbai Chhatrapati Shivaji International Airport at 07:40.
The flighttime is about 2h 15m. The distance travelled ("as the bird flies"): 544 Km. So the average speed is roughly 242 Km.
The best day to arrive at Delhi is Friday and it would be best to avoid Saturday, as prices are on average 51.22% higher than on Friday. (Average prices, based on 6057480 datapoints.)
We have a lot more statistics for flights SG 385 and between Delhi and Mumbai.