Flight Lok Nayak Jayaprakash Airport departs from Patna Lok Nayak Jayaprakash Airport at 21:45 and arrives at Kolkata Netaji Subhas Chandra Bose International Airport at 23:25.
The flighttime is about 1h 40m. The distance travelled ("as the bird flies"): 374 Km. So the average speed is roughly 224 Km.
The best day to arrive at Patna is Sunday and it would be best to avoid Friday, as prices are on average 170.91% higher than on Sunday. (Average prices, based on 82596 datapoints.)
We have a lot more statistics for flights SG 3508 and between Patna and Kolkata.