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

Return flights

03 Sep - 16 Sep	Lufthansa
22 Sep - 30 Sep	Scandinavian Airlines
10 Sep - 16 Sep	Lufthansa
09 Sep - 15 Sep	Etihad Airways
09 Sep - 17 Sep	Etihad Airways
15 Sep - 23 Sep	Scandinavian Airlines
15 Sep - 18 Sep	Scandinavian Airlines
04 Sep - 14 Sep	Etihad Airways
04 Sep - 08 Sep	Etihad Airways
04 Sep - 07 Sep	Etihad Airways
23 Sep - 05 Oct	Etihad Airways
25 Sep - 05 Oct	Etihad Airways
22 Sep - 02 Oct	Emirates
24 Sep - 02 Oct	Emirates
21 Sep - 02 Oct	LOT
23 Sep - 02 Oct	LOT
24 Sep - 21 Oct	Emirates
22 Sep - 21 Oct	Emirates
23 Sep - 06 Oct	LOT
15 Sep - 01 Oct	Emirates

Also check the deals for one-way flights from Seoul to Prague 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 Seoul to Prague in September from 547€

Return flights