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

Return flights

11 Dec - 17 Dec	Ryanair
04 Dec - 11 Dec	Ryanair
24 Dec - 31 Dec	LOT
16 Dec - 23 Dec	Lufthansa
11 Dec - 24 Dec	Ryanair
24 Dec - 11 Jan	LOT
21 Dec - 28 Dec	LOT
27 Dec - 10 Jan	LOT
14 Dec - 18 Dec	Turkish Airlines
27 Dec - 03 Jan	LOT
28 Dec - 04 Jan	LOT
24 Dec - 04 Jan	LOT
20 Dec - 06 Jan	LOT
29 Dec - 10 Jan	LOT
18 Dec - 12 Jan	Pegasus Airlines
21 Dec - 11 Jan	LOT
19 Dec - 06 Jan	Ryanair

Also check the deals for one-way flights from Zagreb 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 Zagreb to Seoul in December from 563€

Return flights