Flight Indira Gandhi International Airport departs from Delhi Indira Gandhi International Airport at 11:00 and arrives at Chennai Chennai International Airport at 13:55.
The flighttime is about 2h 55m. The distance travelled ("as the bird flies"): 479 Km. So the average speed is roughly 164 Km.
The best day to arrive at Delhi is Tuesday and it would be best to avoid Saturday, as prices are on average 64.91% higher than on Tuesday. (Average prices, based on 971577 datapoints.)
We have a lot more statistics for flights 6E 6239 and between Delhi and Chennai.
