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

Return flights

11 Dec - 16 Dec	Air India
01 Dec - 07 Dec	Air India
12 Dec - 20 Dec	Air India
12 Dec - 22 Dec	Air India
15 Dec - 20 Dec	Air India
20 Dec - 29 Dec	Air India
19 Dec - 27 Dec	Air India
24 Dec - 29 Dec	Air India
24 Dec - 30 Dec	Air India
25 Dec - 31 Dec	Air India
24 Dec - 01 Jan	Air India
26 Dec - 01 Jan	Air India
24 Dec - 03 Jan	Air India
24 Dec - 04 Jan	Air India
25 Dec - 04 Jan	Air India
24 Dec - 02 Jan	Air India

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

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 December from 275€

Return flights