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

Return flights

28 Dec - 04 Jan	AirAsia
30 Dec - 06 Jan	AirAsia
21 Dec - 23 Dec	AirAsia
23 Dec - 24 Dec	AirAsia
28 Dec - 14 Jan	AirAsia
21 Dec - 10 Jan	AirAsia
31 Dec - 12 Jan	AirAsia
23 Dec - 11 Jan	AirAsia
30 Dec - 11 Jan	AirAsia
29 Dec - 05 Jan	AirAsia
26 Dec - 09 Jan	Thai AirAsia
30 Dec - 03 Jan	AirAsia
21 Dec - 24 Dec	AirAsia
23 Dec - 30 Dec	AirAsia
16 Dec - 23 Dec	Thai AirAsia
15 Dec - 16 Dec	Thai AirAsia
15 Dec - 23 Dec	Thai AirAsia
17 Dec - 24 Dec	Thai AirAsia
12 Dec - 19 Dec	Thai AirAsia
13 Dec - 24 Dec	Thai AirAsia

Also check the deals for one-way flights from Colombo to Bangkok 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 Colombo to Bangkok in December from $222

Return flights