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

Return flights

24 Dec - 11 Jan	Ryanair
28 Dec - 11 Jan	Ryanair
15 Dec - 22 Dec	Croatia Airlines
30 Dec - 11 Jan	Pegasus Airlines
28 Dec - 12 Jan	Ryanair
30 Dec - 12 Jan	Pegasus Airlines
16 Dec - 23 Dec	Croatia Airlines
28 Dec - 10 Jan	Ryanair
30 Dec - 10 Jan	Pegasus Airlines
29 Dec - 12 Jan	LOT
29 Dec - 10 Jan	LOT
27 Dec - 10 Jan	Ryanair
15 Dec - 21 Dec	Croatia Airlines
17 Dec - 19 Dec	Aegean Airlines
19 Dec - 27 Dec	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 $832

Return flights