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

Return flights

17 Dec - 31 Dec	Finnair
12 Dec - 09 Jan	Finnair
13 Dec - 20 Dec	Turkish Airlines
23 Dec - 31 Dec	Finnair
14 Dec - 21 Dec	Turkish Airlines
26 Dec - 09 Jan	Finnair
21 Dec - 29 Dec	Finnair
26 Dec - 09 Jan	Korean Air	direct
19 Dec - 25 Dec	Etihad Airways
23 Dec - 02 Jan	Finnair
19 Dec - 01 Jan	Finnair
17 Dec - 31 Dec	Korean Air	direct
20 Dec - 26 Dec	Finnair
20 Dec - 28 Dec	Finnair
14 Dec - 21 Dec	Asiana Airlines	direct
12 Dec - 09 Jan	Korean Air	direct
20 Dec - 03 Jan	LOT

Also check the deals for one-way flights from Prague to Seoul in December.

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 December from $823

Return flights