Flight Indira Gandhi International Airport departs from Delhi Indira Gandhi International Airport at 06:20 and arrives at Patna Lok Nayak Jayaprakash Airport at 08:00.
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 Wednesday and it would be best to avoid Monday, as prices are on average 103.75% higher than on Wednesday. (Average prices, based on 329840 datapoints.)
We have a lot more statistics for flights 6E 5058 and between Delhi and Patna.