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

Return flights

02 Dec - 09 Dec	Lufthansa
06 Dec - 11 Dec	Lufthansa
07 Dec - 14 Dec	Lufthansa
02 Dec - 31 Dec	Lufthansa
08 Dec - 18 Dec	Lufthansa
25 Dec - 31 Dec	KLM
26 Dec - 06 Jan	Lufthansa
15 Dec - 22 Dec	Lufthansa
16 Dec - 21 Dec	Lufthansa
19 Dec - 31 Dec	Lufthansa
23 Dec - 31 Dec	Lufthansa
25 Dec - 01 Jan	Turkish Airlines
31 Dec - 07 Jan	Turkish Airlines
25 Dec - 03 Jan	Turkish Airlines
28 Dec - 03 Jan	Turkish Airlines
27 Dec - 03 Jan	Turkish Airlines

Also check the deals for one-way flights from Seoul to Zagreb 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 Seoul to Zagreb in December from $598

Return flights