Flight Indira Gandhi International Airport departs from Delhi Indira Gandhi International Airport at 08:20 and arrives at Patna Lok Nayak Jayaprakash Airport at 10:00.
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 Tuesday and it would be best to avoid Monday, as prices are on average 98.92% higher than on Tuesday. (Average prices, based on 495005 datapoints.)
We have a lot more statistics for flights UL 3616 and between Delhi and Patna.