AirHint found the following cheapest return flights from Zurich (ZRH) to Ljubljana (LJU) in December 2025 (see full year).

Return flights

30 Dec - 06 Jan	Air Serbia
28 Dec - 30 Dec	Air Serbia
27 Dec - 28 Dec	Air Serbia
28 Dec - 29 Dec	Air Serbia
27 Dec - 30 Dec	SWISS	direct
27 Dec - 28 Dec	SWISS	direct
27 Dec - 29 Dec	Air Serbia
27 Dec - 31 Dec	Air Serbia
29 Dec - 05 Jan	Air Serbia
30 Dec - 06 Jan	SWISS	direct
27 Dec - 29 Dec	SWISS	direct
28 Dec - 01 Jan	KLM
28 Dec - 02 Jan	SWISS
31 Dec - 03 Jan	SWISS	direct
30 Dec - 04 Jan	SWISS	direct
30 Dec - 04 Jan	SWISS
31 Dec - 04 Jan	SWISS	direct
28 Dec - 01 Jan	SWISS	direct
28 Dec - 29 Dec	SWISS	direct

Also check the deals for one-way flights from Zurich to Ljubljana 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 Zurich to Ljubljana in December from 274€

Return flights