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

Return flights

17 Sep - 19 Sep	Air China
14 Sep - 17 Sep	Air China
17 Sep - 23 Sep	Air China
11 Sep - 22 Sep	Air China
10 Sep - 22 Sep	Air China
18 Sep - 22 Sep	Air China
15 Sep - 18 Sep	Air China
16 Sep - 19 Sep	Air China
08 Sep - 22 Sep	Air China
09 Sep - 22 Sep	Air China
24 Sep - 08 Oct	Air France
24 Sep - 07 Oct	Air France
25 Sep - 23 Oct	Etihad Airways
27 Sep - 12 Oct	Ryanair
21 Sep - 06 Oct	Etihad Airways
25 Sep - 07 Oct	Norwegian Air Sweden AOC
23 Sep - 04 Oct	Ryanair
25 Sep - 04 Oct	Etihad Airways
12 Sep - 04 Oct	Etihad Airways
18 Sep - 02 Oct	Etihad Airways

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 $568

Return flights