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

One-Way flights

04 Dec	Thai AirAsia	direct
01 Dec	Thai AirAsia	direct
10 Dec	Thai AirAsia	direct
12 Dec	Thai AirAsia	direct
11 Dec	Thai AirAsia	direct
06 Dec	Thai AirAsia	direct
15 Dec	Thai AirAsia	direct
13 Dec	Thai AirAsia	direct
16 Dec	Thai AirAsia	direct
18 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 125€

One-Way flights