Flight Indira Gandhi International Airport departs from Delhi Indira Gandhi International Airport at 21:10 and arrives at Kolkata Netaji Subhas Chandra Bose International Airport at 23:25.
The flighttime is about 2h 15m. The distance travelled ("as the bird flies"): 1262 Km. So the average speed is roughly 561 Km.
The best day to arrive at Delhi is Monday and it would be best to avoid Sunday, as prices are on average 95.3% higher than on Monday. (Average prices, based on 2482100 datapoints.)
We have a lot more statistics for flights AI 762 and between Delhi and Kolkata.