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

Return flights

25 Oct - 29 Oct	Air Serbia
25 Oct - 02 Nov	Air Serbia
07 Oct - 09 Oct	Air Serbia
07 Oct - 12 Oct	Air Serbia
21 Oct - 24 Oct	Air Serbia
22 Oct - 29 Oct	Air Serbia
24 Oct - 27 Oct	Air Serbia
02 Oct - 04 Oct	Air Serbia
10 Oct - 19 Oct	Air Serbia
27 Oct - 29 Oct	Air Serbia
06 Oct - 11 Oct	Air Serbia
25 Oct - 01 Nov	Air Serbia
28 Oct - 01 Nov	Air Serbia
25 Oct - 02 Nov	Turkish Airlines	direct
25 Oct - 01 Nov	Turkish Airlines	direct

Also check the deals for one-way flights from Istanbul to Ljubljana in October.

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 Istanbul to Ljubljana in October from 186€

Return flights