Flight Chhatrapati Shivaji International Airport departs from Mumbai Chhatrapati Shivaji International Airport at 16:00 and arrives at Delhi Indira Gandhi International Airport at 18:30.
The flighttime is about 2h 30m. The distance travelled ("as the bird flies"): 544 Km. So the average speed is roughly 218 Km.
The best day to arrive at Mumbai is Friday and it would be best to avoid Wednesday, as prices are on average 90% higher than on Friday. (Average prices, based on 6665220 datapoints.)
We have a lot more statistics for flights AI 687 and between Mumbai and Delhi.