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

Return flights

10 Dec - 15 Dec	KLM
11 Dec - 15 Dec	KLM
13 Dec - 15 Jan	KLM
12 Dec - 14 Dec	Lufthansa
18 Dec - 22 Dec	Lufthansa
16 Dec - 20 Dec	Lufthansa
18 Dec - 21 Dec	Lufthansa
15 Dec - 16 Dec	Air Serbia
08 Dec - 10 Dec	Air Serbia
05 Dec - 12 Dec	Air Serbia
18 Dec - 08 Jan	Lufthansa
18 Dec - 06 Jan	Lufthansa
18 Dec - 12 Jan	Lufthansa
29 Dec - 16 Jan	Lufthansa
16 Dec - 27 Jan	Lufthansa
16 Dec - 06 Jan	Lufthansa
17 Dec - 08 Jan	SWISS
16 Dec - 08 Jan	SWISS
16 Dec - 09 Jan	SWISS
10 Dec - 15 Dec	KLM	direct

Also check the deals for one-way flights from Amsterdam 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 Amsterdam to Ljubljana in December from $244

Return flights