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

Return flights

02 Dec - 07 Dec	Lufthansa
01 Dec - 30 Jan	Lufthansa
02 Dec - 09 Dec	Lufthansa
09 Dec - 13 Jan	Lufthansa
17 Dec - 24 Dec	Lufthansa
16 Dec - 23 Dec	Lufthansa
05 Dec - 09 Dec	Lufthansa
18 Dec - 23 Dec	Lufthansa
06 Dec - 11 Dec	KLM
03 Dec - 08 Dec	Air France
11 Dec - 14 Dec	Lufthansa
01 Dec - 05 Dec	Air France
26 Dec - 30 Jan	Lufthansa
22 Dec - 06 Jan	Lufthansa
26 Dec - 02 Jan	Lufthansa
29 Dec - 02 Jan	Lufthansa
26 Dec - 03 Jan	Lufthansa
30 Dec - 03 Jan	Lufthansa
03 Dec - 01 Jan	Lufthansa
22 Dec - 01 Jan	Lufthansa

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 511€

Return flights