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

Return flights

27 Aug - 15 Sep	Air China
30 Aug - 06 Sep	Air China
30 Aug - 05 Sep	Air China
26 Aug - 25 Sep	Air China
27 Aug - 31 Aug	Air China
21 Aug - 01 Sep	Air China
26 Aug - 02 Sep	Air China
30 Aug - 04 Sep	Air China
30 Aug - 14 Sep	Air China
30 Aug - 13 Sep	Air China
25 Aug - 06 Sep	Air China
24 Aug - 29 Aug	Asiana Airlines
27 Aug - 30 Aug	Air China
20 Aug - 23 Aug	Lufthansa
26 Aug - 30 Aug	Air China
25 Aug - 31 Aug	Air China
27 Aug - 29 Aug	Air China
28 Aug - 31 Aug	Air China
21 Aug - 27 Aug	KLM
20 Aug - 26 Aug	China Eastern

Also check the deals for one-way flights from Seoul to Copenhagen 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 Seoul to Copenhagen in August from $678

Return flights