Flight Indira Gandhi International Airport departs from Delhi Indira Gandhi International Airport at 09:40 and arrives at Patna Lok Nayak Jayaprakash Airport at 11:20.
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 Friday, as prices are on average 100.6% higher than on Wednesday. (Average prices, based on 494264 datapoints.)
We have a lot more statistics for flights 6E 2373 and between Delhi and Patna.