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

Return flights

10 Oct - 19 Oct	Air India
08 Oct - 15 Oct	Air India
09 Oct - 15 Oct	Air India
02 Oct - 11 Oct	Air India
10 Oct - 17 Oct	Air India
10 Oct - 14 Oct	Air India
24 Oct - 01 Nov	IndiGo
30 Oct - 04 Nov	Air India
16 Oct - 23 Oct	IndiGo
09 Oct - 09 Oct	Air India
22 Oct - 27 Oct	IndiGo
01 Oct - 05 Oct	Air India

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

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 October from 223€

Return flights