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

Return flights

27 Sep - 13 Oct	Ryanair
23 Sep - 17 Oct	Ryanair
09 Sep - 17 Sep	Ryanair
16 Sep - 23 Sep	Ryanair
20 Sep - 20 Oct	Ryanair
17 Sep - 09 Oct	Ryanair
09 Sep - 22 Sep	Ryanair
09 Sep - 16 Sep	Ryanair
13 Sep - 24 Sep	Ryanair
12 Sep - 16 Sep	Ryanair
29 Sep - 13 Oct	Ryanair
28 Sep - 13 Oct	Ryanair
15 Sep - 18 Sep	Ryanair
09 Sep - 23 Sep	Ryanair
18 Sep - 23 Sep	Ryanair
10 Sep - 15 Sep	Ryanair
24 Sep - 09 Oct	Ryanair
29 Sep - 16 Oct	Ryanair
18 Sep - 10 Oct	Ryanair
28 Sep - 11 Oct	Ryanair

Also check the deals for one-way flights from Warsaw 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.

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Cheapest return flights from Warsaw to Seoul in September from $688

Return flights