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
02 Dec - 11 Dec	Lufthansa
02 Dec - 07 Dec	Lufthansa
16 Dec - 15 Jan	Lufthansa
04 Dec - 11 Dec	Lufthansa
20 Dec - 08 Jan	China Eastern
08 Dec - 31 Dec	LOT
07 Dec - 10 Dec	LOT
08 Dec - 13 Dec	LOT
20 Dec - 09 Jan	China Eastern
24 Dec - 31 Dec	LOT
06 Dec - 13 Dec	LOT
01 Dec - 04 Dec	Lufthansa
24 Dec - 04 Jan	LOT
23 Dec - 22 Jan	Air France
23 Dec - 05 Jan	LOT
27 Dec - 02 Jan	LOT
19 Dec - 10 Jan	Turkish Airlines
23 Dec - 02 Jan	LOT
26 Dec - 04 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 501€

Return flights