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

Return flights

08 Sep - 16 Sep	Hainan Airlines
29 Sep - 14 Oct	Etihad Airways
10 Sep - 16 Sep	Hainan Airlines
10 Sep - 18 Sep	Hainan Airlines
22 Sep - 14 Oct	Hainan Airlines
29 Sep - 23 Oct	Etihad Airways
29 Sep - 16 Oct	Etihad Airways
22 Sep - 13 Oct	Wizz Air UK
17 Sep - 21 Sep	Hainan Airlines
10 Sep - 21 Sep	Hainan Airlines
16 Sep - 23 Sep	Wizz Air UK
12 Sep - 13 Oct	Ryanair
18 Sep - 21 Sep	Wizz Air UK
08 Sep - 16 Oct	Air France
09 Sep - 09 Oct	KLM
13 Sep - 23 Sep	Ryanair
17 Sep - 22 Sep	Wizz Air UK
22 Sep - 08 Oct	Air France
14 Sep - 22 Sep	Wizz Air UK
27 Sep - 11 Oct	Wizz Air UK

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 $645

Return flights