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

One-Way flights

26 Oct	Thai AirAsia	direct
17 Oct	Thai AirAsia	direct
16 Oct	Thai AirAsia	direct
11 Oct	Thai AirAsia	direct
14 Oct	Thai AirAsia	direct
15 Oct	Thai AirAsia	direct
19 Oct	Thai AirAsia	direct
25 Oct	Thai AirAsia	direct
24 Oct	Thai AirAsia	direct
23 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 $122

One-Way flights