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

One-Way flights

08 Dec	Thai AirAsia	direct
27 Dec	Thai AirAsia	direct
16 Dec	Thai AirAsia	direct
06 Dec	Thai AirAsia	direct
21 Dec	Thai AirAsia	direct
31 Dec	Thai AirAsia	direct
29 Dec	Thai AirAsia	direct
20 Dec	Thai AirAsia	direct
24 Dec	Thai AirAsia	direct
25 Dec	Thai AirAsia	direct

Also check the deals for return 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 one-way flights from Colombo to Bangkok in December from 131€

One-Way flights