Flight Indira Gandhi International Airport departs from Delhi Indira Gandhi International Airport at 21:15 and arrives at Kolkata Netaji Subhas Chandra Bose International Airport at 23:25.
The flighttime is about 2h 10m. The distance travelled ("as the bird flies"): 1262 Km. So the average speed is roughly 582 Km.
The best month to arrive at Delhi is August and the most expensive month to fly is April. (Average prices, based on 556 datapoints.)
The best day to arrive at Delhi is Saturday and it would be best to avoid Wednesday, as prices are on average 203.31% higher than on Saturday. (Average prices, based on 2503680 datapoints.)
We have a lot more statistics for flights 6E 389 and between Delhi and Kolkata.