Flight Indira Gandhi International Airport departs from Delhi Indira Gandhi International Airport at 12:20 and arrives at Kolkata Netaji Subhas Chandra Bose International Airport at 14:40.
The flighttime is about 2h 20m. The distance travelled ("as the bird flies"): 1262 Km. So the average speed is roughly 541 Km.
The best day to arrive at Delhi is Sunday and it would be best to avoid Saturday, as prices are on average 173.28% higher than on Sunday. (Average prices, based on 2502339 datapoints.)
We have a lot more statistics for flights AI 767 and between Delhi and Kolkata.
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