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

Return flights

22 Sep - 09 Oct	Hainan Airlines
24 Sep - 09 Oct	Hainan Airlines
21 Sep - 09 Oct	Etihad Airways
29 Sep - 09 Oct	Hainan Airlines
28 Sep - 09 Oct	Etihad Airways
04 Sep - 14 Sep	easyJet
08 Sep - 14 Sep	Etihad Airways
01 Sep - 14 Sep	Hainan Airlines
10 Sep - 14 Sep	Hainan Airlines
05 Sep - 10 Sep	Air France
02 Sep - 10 Sep	Air France
01 Sep - 10 Sep	KLM
03 Sep - 10 Sep	KLM
08 Sep - 16 Oct	Air France
01 Sep - 21 Sep	Hainan Airlines
15 Sep - 21 Sep	Hainan Airlines
10 Sep - 10 Oct	LOT
23 Sep - 09 Oct	Finnair
22 Sep - 08 Oct	Finnair
26 Sep - 09 Oct	Etihad Airways

Also check the deals for one-way flights from Prague 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 Prague to Seoul in September from $659

Return flights