Cheapest return IST–LJU flights, September

AirHint found the following cheapest return flights from Istanbul (IST) to Ljubljana (LJU) in September 2026 (see full year).

Return flights

21 Sep - 28 Sep Pegasus Airlines
21 Sep - 28 Sep Pegasus Airlines direct
06 Sep - 12 Sep Air Serbia
25 Sep - 27 Sep Air Serbia
11 Sep - 14 Sep Air Serbia
06 Sep - 12 Sep Turkish Airlines direct
25 Sep - 27 Sep Turkish Airlines direct
11 Sep - 14 Sep Turkish Airlines direct
23 Sep - 26 Sep Turkish Airlines direct

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

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