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

Return flights

27 Jul - 11 Aug	Cathay Pacific
08 Jul - 14 Jul	AirAsia
22 Jul - 28 Jul	Cathay Pacific
27 Jul - 10 Aug	Cathay Pacific
31 Jul - 07 Aug	AirAsia
11 Jul - 17 Jul	AirAsia
29 Jul - 04 Aug	Cathay Pacific
07 Jul - 14 Jul	Cathay Pacific
06 Jul - 08 Jul	AirAsia
23 Jul - 08 Aug	AirAsia
23 Jul - 11 Aug	AirAsia
10 Jul - 17 Jul	AirAsia
05 Jul - 08 Jul	AirAsia
22 Jul - 08 Aug	AirAsia
22 Jul - 11 Aug	AirAsia
06 Jul - 09 Jul	AirAsia
06 Jul - 16 Jul	AirAsia
05 Jul - 07 Jul	AirAsia
23 Jul - 12 Aug	AirAsia
23 Jul - 07 Aug	AirAsia

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

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 July from $423

Return flights