The best month to arrive at Kolkata is September and the most expensive month to fly is June. (Average prices, based on 605 datapoints.)
The best day to arrive at Kolkata is Monday and it would be best to avoid Friday, as prices are on average 44.64% higher than on Monday. (Average prices, based on 652 datapoints.)
The cheapest airline flying to Kolkata is Biman Bangladesh Airlines. They are 54% cheaper than Air India. (Average prices, based on 624 datapoints.)