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

One-Way flights

16 Oct	Thai AirAsia	direct
17 Oct	Thai AirAsia	direct
02 Oct	Thai AirAsia	direct
18 Oct	Thai AirAsia	direct
20 Oct	Thai AirAsia	direct
10 Oct	Thai AirAsia	direct
07 Oct	Thai AirAsia	direct
27 Oct	Thai AirAsia	direct
23 Oct	Thai AirAsia	direct
30 Oct	Thai AirAsia	direct

Also check the deals for return flights from Bangkok to Colombo in October.

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 Bangkok to Colombo in October from 97€

One-Way flights