AirHint found the following cheapest return flights from Kolkata (CCU) to Colombo (CMB) in August 2025 (see full year).

Return flights

08 Aug - 14 Aug	IndiGo
12 Aug - 19 Aug	IndiGo
03 Aug - 07 Aug	IndiGo
09 Aug - 16 Aug	IndiGo
09 Aug - 17 Aug	IndiGo
04 Aug - 10 Aug	IndiGo
14 Aug - 20 Aug	IndiGo
26 Aug - 02 Sep	IndiGo
27 Aug - 02 Sep	IndiGo
03 Aug - 10 Aug	Air India
02 Aug - 05 Aug	IndiGo
02 Aug - 06 Aug	IndiGo

Also check the deals for one-way flights from Kolkata to Colombo in August.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from Kolkata to Colombo in August from $255

Return flights