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

Return flights

27 Aug - 05 Sep	Air China
30 Aug - 04 Sep	Air China
30 Aug - 07 Sep	Air China
25 Aug - 04 Sep	China Southern
25 Aug - 29 Aug	Air China
27 Aug - 31 Aug	Air China
25 Aug - 27 Aug	Air China
26 Aug - 05 Sep	Air China
25 Aug - 01 Sep	Air China
25 Aug - 02 Sep	Air China
25 Aug - 08 Sep	Air China
27 Aug - 30 Aug	Air China
28 Aug - 01 Sep	Air China
30 Aug - 31 Aug	Air China
26 Aug - 30 Aug	Air China
31 Aug - 04 Sep	China Eastern
19 Aug - 26 Aug	Air China
28 Aug - 31 Aug	Air China
17 Aug - 25 Aug	KLM
17 Aug - 21 Aug	KLM

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 546€

Return flights