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

Return flights

09 Dec - 13 Dec	Air India
07 Dec - 11 Dec	IndiGo
08 Dec - 11 Dec	IndiGo
10 Dec - 15 Dec	IndiGo
10 Dec - 16 Dec	IndiGo
08 Dec - 16 Dec	IndiGo
11 Dec - 17 Dec	Air India
12 Dec - 18 Dec	Air India
17 Dec - 30 Dec	Air India
13 Dec - 20 Dec	Air India
29 Dec - 08 Jan	IndiGo
20 Dec - 06 Jan	IndiGo
29 Dec - 04 Jan	IndiGo
30 Dec - 04 Jan	IndiGo
27 Dec - 02 Jan	IndiGo
25 Dec - 01 Jan	IndiGo
26 Dec - 04 Jan	IndiGo
23 Dec - 03 Jan	IndiGo
24 Dec - 02 Jan	IndiGo
26 Dec - 03 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 $242

Return flights