Flight Indira Gandhi International Airport departs from Delhi Indira Gandhi International Airport at 16:25 and arrives at Kolkata Netaji Subhas Chandra Bose International Airport at 20:10.The flight has a short stop at Patna.
The flighttime is about 3h 45m. The distance travelled ("as the bird flies"): 1262 Km. So the average speed is roughly 337 Km.
The best month to arrive at Delhi is July and the most expensive month to fly is May. (Average prices, based on 449 datapoints.)
We have a lot more statistics for flights SG 2953 and between Delhi and Kolkata.