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

Return flights

10 Dec - 16 Dec	Wizz Air
01 Dec - 06 Dec	Wizz Air
03 Dec - 07 Dec	Wizz Air
05 Dec - 08 Dec	Wizz Air
01 Dec - 05 Dec	Wizz Air
04 Dec - 09 Dec	Air Serbia
07 Dec - 09 Dec	Air Serbia
11 Dec - 06 Jan	Air Serbia
12 Dec - 14 Dec	Wizz Air
09 Dec - 12 Dec	Vueling Airlines
12 Dec - 02 Jan	Wizz Air
15 Dec - 29 Jan	Lufthansa
03 Dec - 13 Dec	Wizz Air
18 Dec - 06 Jan	Air Serbia
17 Dec - 06 Jan	Air Serbia
18 Dec - 05 Jan	Air Serbia
29 Dec - 06 Jan	Air Serbia
15 Dec - 29 Jan	Turkish Airlines	direct
24 Dec - 06 Jan	Air Serbia
23 Dec - 11 Jan	Vueling Airlines

Also check the deals for one-way flights from Ljubljana to Istanbul 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 Istanbul in December from 147€

Return flights