Flight Lok Nayak Jayaprakash Airport departs from Patna Lok Nayak Jayaprakash Airport at 21:20 and arrives at Delhi Indira Gandhi International Airport at 23:30.
The flighttime is about 2h 10m. The distance travelled ("as the bird flies"): 888 Km. So the average speed is roughly 410 Km.
The best day to arrive at Patna is Tuesday and it would be best to avoid Sunday, as prices are on average 181.76% higher than on Tuesday. (Average prices, based on 316743 datapoints.)
We have a lot more statistics for flights SG 8390 and between Patna and Delhi.