The best month to fly between Kolkata and Mumbai is September and the most expensive month to fly is May. (Average prices, based on 582 datapoints.)
The best day to arrive at Kolkata is Friday and it would be best to avoid Thursday, as prices are on average 122.07% higher than on Friday. (Average prices, based on 260096 datapoints.)
The best time to fly is at around 20. (Average prices, based on 747 datapoints.)