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 Tuesday and it would be best to avoid Wednesday, as prices are on average 221.75% higher than on Tuesday. (Average prices, based on 257585 datapoints.)
The best time to fly is at around 20. (Average prices, based on 747 datapoints.)