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

Return flights

08 Oct - 13 Oct	Air India
02 Oct - 07 Oct	Air India
12 Oct - 20 Oct	Air India
01 Oct - 05 Oct	Air India
03 Oct - 14 Oct	Air India
13 Oct - 23 Oct	Air India
23 Oct - 30 Oct	AirAsia
03 Oct - 07 Oct	Air India
20 Oct - 24 Oct	Air India
13 Oct - 09 Nov	Air India
13 Oct - 13 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 206€

Return flights