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
02 Dec - 11 Dec	Lufthansa
09 Dec - 14 Dec	Lufthansa
05 Dec - 10 Dec	Lufthansa
25 Dec - 31 Dec	KLM
23 Dec - 06 Jan	Lufthansa
17 Dec - 07 Jan	Lufthansa
27 Dec - 31 Dec	KLM
06 Dec - 13 Dec	LOT
01 Dec - 07 Dec	Lufthansa
23 Dec - 05 Jan	Lufthansa
09 Dec - 12 Dec	LOT
27 Dec - 05 Jan	KLM
18 Dec - 02 Jan	Lufthansa
26 Dec - 03 Jan	Lufthansa
31 Dec - 07 Jan	KLM
25 Dec - 02 Jan	Turkish Airlines
25 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 509€

Return flights