Flight Indira Gandhi International Airport departs from Delhi Indira Gandhi International Airport at 08:45 and arrives at Mumbai Chhatrapati Shivaji International Airport at 11:00.
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 Thursday and it would be best to avoid Saturday, as prices are on average 60.05% higher than on Thursday. (Average prices, based on 4794453 datapoints.)
We have a lot more statistics for flights 6E 6278 and between Delhi and Mumbai.