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

Return flights

12 Dec - 15 Dec	Wizz Air
11 Dec - 13 Dec	Air Serbia
15 Dec - 20 Dec	Air Serbia
08 Dec - 13 Dec	Air Serbia
25 Dec - 27 Dec	Air Serbia
31 Dec - 03 Jan	Air Serbia
12 Dec - 15 Dec	Turkish Airlines	direct
14 Dec - 20 Dec	Air Serbia
11 Dec - 13 Dec	Turkish Airlines	direct
05 Dec - 07 Dec	Turkish Airlines	direct
05 Dec - 15 Dec	Turkish Airlines	direct
28 Dec - 21 Jan	Wizz Air
25 Dec - 08 Jan	Air Serbia
27 Dec - 03 Jan	Wizz Air
17 Dec - 06 Jan	Air Serbia
18 Dec - 06 Jan	Air Serbia
27 Dec - 22 Jan	Wizz Air
30 Dec - 02 Jan	Wizz Air
17 Dec - 05 Jan	Air Serbia
19 Dec - 09 Jan	Aegean 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 141€

Return flights