AirHint found the following cheapest return flights from Colombo (CMB) to Seoul (ICN) in August 2025 (see full year).

Return flights

27 Aug - 03 Sep	AirAsia
28 Aug - 03 Sep	AirAsia
28 Aug - 02 Sep	AirAsia
21 Aug - 25 Aug	AirAsia
17 Aug - 27 Aug	China Eastern
27 Aug - 30 Aug	AirAsia
26 Aug - 01 Sep	AirAsia
20 Aug - 27 Aug	AirAsia
19 Aug - 27 Aug	AirAsia
22 Aug - 25 Aug	AirAsia
24 Aug - 26 Aug	AirAsia
24 Aug - 30 Aug	AirAsia
22 Aug - 30 Aug	AirAsia
22 Aug - 27 Aug	AirAsia
27 Aug - 01 Sep	AirAsia
27 Aug - 15 Sep	AirAsia
27 Aug - 08 Sep	AirAsia
22 Aug - 01 Sep	AirAsia
27 Aug - 14 Sep	AirAsia
27 Aug - 13 Sep	AirAsia

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

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 Seoul in August from 376€

Return flights