Flight Indira Gandhi International Airport departs from Delhi Indira Gandhi International Airport at 18:55 and arrives at Patna Lok Nayak Jayaprakash Airport at 20:50.
The flighttime is about 1h 55m. The distance travelled ("as the bird flies"): 888 Km. So the average speed is roughly 463 Km.
The best day to arrive at Delhi is Friday and it would be best to avoid Thursday, as prices are on average 66.62% higher than on Friday. (Average prices, based on 329744 datapoints.)
We have a lot more statistics for flights SG 8471 and between Delhi and Patna.