AirHint found the following cheapest return flights from Colombo (CMB) to Bangkok (DMK) in May 2026 (see full year).

Return flights

04 May - 12 May	AirAsia
12 May - 19 May	AirAsia
13 May - 19 May	AirAsia
04 May - 10 May	AirAsia
20 May - 27 May	Thai AirAsia	direct
12 May - 19 May	Thai AirAsia	direct
30 May - 14 Jun	Thai AirAsia	direct
27 May - 31 May	Thai AirAsia	direct
27 May - 01 Jun	Thai AirAsia	direct

Also check the deals for one-way flights from Colombo to Bangkok in May.

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 May from $225

Return flights