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

Return flights

12 May - 17 May	AirAsia X
14 May - 21 May	AirAsia X
01 May - 06 May	Air India
13 May - 17 May	AirAsia X
15 May - 22 May	Air India
01 May - 09 May	Air India
04 May - 12 May	SriLankan Airlines	direct
13 May - 17 May	SriLankan Airlines	direct
04 May - 02 Jun	SriLankan Airlines	direct
01 May - 05 May	AirAsia X
01 May - 31 May	Thai Airways

Also check the deals for one-way flights from Seoul to Colombo 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 Seoul to Colombo in May from 382€

Return flights