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

Return flights

24 Apr - 04 May	Air India
25 Apr - 04 May	Air India
24 Apr - 05 May	Thai AirAsia X
25 Apr - 05 May	Thai AirAsia X
22 Apr - 05 May	Thai AirAsia X
22 Apr - 04 May	Thai AirAsia X
22 Apr - 26 Apr	SriLankan Airlines	direct
22 Apr - 01 May	Thai Airways
01 Apr - 03 Apr	Thai AirAsia X
24 Apr - 01 May	Thai AirAsia X
25 Apr - 01 May	Thai AirAsia X
22 Apr - 28 Apr	Emirates

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

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 April from 456€

Return flights