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
03 Sep - 16 Sep	Hainan Airlines
01 Sep - 14 Oct	Hainan Airlines
22 Sep - 14 Oct	Hainan Airlines
01 Sep - 04 Sep	Hainan Airlines
29 Sep - 21 Oct	Etihad Airways
10 Sep - 25 Sep	Etihad Airways
09 Sep - 09 Oct	Air France
10 Sep - 10 Oct	Air France
28 Sep - 12 Oct	Smart Wings
27 Sep - 12 Oct	Smart Wings
01 Sep - 09 Sep	Hainan Airlines
01 Sep - 07 Sep	Hainan Airlines
09 Sep - 21 Sep	Wizz Air UK
01 Sep - 20 Sep	Etihad Airways
15 Sep - 20 Sep	Etihad Airways
14 Sep - 31 Oct	Smart Wings
06 Sep - 17 Sep	easyJet
08 Sep - 16 Oct	KLM
22 Sep - 13 Oct	KLM

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 563€

Return flights