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

Return flights

06 Dec - 09 Dec	Ryanair
08 Dec - 19 Dec	Ryanair
03 Dec - 16 Dec	Ryanair
05 Dec - 20 Dec	Ryanair
01 Dec - 08 Dec	Ryanair
09 Dec - 19 Dec	Ryanair
09 Dec - 13 Dec	Air France
13 Dec - 21 Dec	Ryanair
31 Dec - 08 Jan	KLM
24 Dec - 11 Jan	LOT
28 Dec - 11 Jan	LOT
11 Dec - 04 Jan	Ryanair
10 Dec - 08 Jan	Croatia Airlines
27 Dec - 06 Jan	LOT
21 Dec - 04 Jan	Lufthansa
28 Dec - 06 Jan	LOT
26 Dec - 06 Jan	LOT
21 Dec - 18 Jan	Lufthansa

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 539€

Return flights