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

Return flights

04 Sep - 18 Sep	Air China
03 Sep - 09 Sep	Asiana Airlines
22 Sep - 29 Sep	Air China
14 Sep - 20 Sep	Japan Airlines
04 Sep - 12 Sep	Japan Airlines
30 Sep - 11 Oct	Japan Airlines
27 Sep - 05 Oct	Japan Airlines
26 Sep - 05 Oct	Japan Airlines
22 Sep - 05 Oct	Japan Airlines
25 Sep - 28 Sep	Japan Airlines
24 Sep - 07 Oct	Japan Airlines
25 Sep - 16 Oct	Japan Airlines
24 Sep - 29 Sep	Japan Airlines
24 Sep - 06 Oct	Japan Airlines
22 Sep - 03 Oct	Japan Airlines
04 Sep - 11 Sep	Japan Airlines
01 Sep - 05 Sep	Japan Airlines
08 Sep - 11 Sep	Japan Airlines
26 Sep - 03 Oct	Japan Airlines
27 Sep - 07 Oct	Japan Airlines

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 745€

Return flights