Flight Indira Gandhi International Airport departs from Delhi Indira Gandhi International Airport at 17:55 and arrives at Patna Lok Nayak Jayaprakash Airport at 19:35.
The flighttime is about 1h 40m. The distance travelled ("as the bird flies"): 888 Km. So the average speed is roughly 533 Km.
The best day to arrive at Delhi is Saturday and it would be best to avoid Tuesday, as prices are on average 54.5% higher than on Saturday. (Average prices, based on 512699 datapoints.)
We have a lot more statistics for flights 6E 2695 and between Delhi and Patna.