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

Return flights

12 Sep - 19 Sep	Air India
07 Sep - 14 Sep	Air China
08 Sep - 14 Sep	Air China
11 Sep - 24 Sep	Air France
08 Sep - 24 Sep	Air France
14 Sep - 20 Sep	Air India
12 Sep - 26 Sep	Air India
26 Sep - 10 Oct	Air India
30 Sep - 10 Oct	Finnair
19 Sep - 30 Sep	Air India
23 Sep - 08 Oct	Scandinavian Airlines	direct
12 Sep - 22 Sep	Air France
14 Sep - 27 Sep	Air India
30 Sep - 10 Oct	Scandinavian Airlines	direct
26 Sep - 10 Oct	Scandinavian Airlines	direct
19 Sep - 17 Oct	Air Canada

Also check the deals for one-way flights from Copenhagen to Seoul in September.

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.

Book a cheap hotel in Seoul

Cheap car rent in Seoul

Cheapest return flights from Copenhagen to Seoul in September from $668

Return flights