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

Return flights

15 Jun - 16 Jun	Vietnam Airlines
14 Jun - 15 Jun	Thai AirAsia X
01 Jun - 11 Jun	Thai AirAsia X
14 Jun - 16 Jun	Thai AirAsia X
06 Jun - 11 Jun	Thai AirAsia X
01 Jun - 15 Jun	Thai AirAsia X
01 Jun - 16 Jun	Thai AirAsia X
06 Jun - 15 Jun	Thai AirAsia X
06 Jun - 16 Jun	Thai AirAsia X
15 Jun - 16 Jun	SriLankan Airlines	direct
14 Jun - 05 Jul	Thai AirAsia X
15 Jun - 05 Jul	Thai AirAsia X
15 Jun - 06 Jul	Thai AirAsia X

Also check the deals for one-way flights from Seoul to Colombo in June.

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 June from 335€

Return flights