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

Return flights

07 Dec - 11 Dec	Air Serbia
13 Dec - 14 Dec	SWISS
02 Dec - 05 Dec	Air Serbia
11 Dec - 13 Dec	SWISS
12 Dec - 14 Dec	Lufthansa
05 Dec - 07 Dec	Lufthansa
16 Dec - 26 Dec	Air Serbia
27 Dec - 30 Dec	Air Serbia
26 Dec - 29 Dec	Air Serbia
30 Dec - 01 Jan	Air Serbia
30 Dec - 02 Jan	Air Serbia
24 Dec - 28 Dec	LOT

Also check the deals for one-way flights from Ljubljana to Vienna 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 Ljubljana to Vienna in December from $222

Return flights