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

Return flights

01 Sep - 30 Sep	Norwegian Air Sweden AOC
27 Sep - 11 Oct	Eurowings
27 Sep - 01 Oct	Eurowings
27 Sep - 12 Oct	Eurowings
01 Sep - 14 Sep	Norwegian Air Sweden AOC
01 Sep - 06 Sep	Norwegian Air Sweden AOC
05 Sep - 10 Sep	Norwegian Air Sweden AOC
27 Sep - 04 Oct	Eurowings
28 Sep - 01 Oct	Air Serbia
02 Sep - 06 Sep	Eurowings
05 Sep - 15 Sep	Norwegian Air Sweden AOC
05 Sep - 08 Sep	Norwegian Air Sweden AOC
06 Sep - 09 Sep	Eurowings
13 Sep - 14 Sep	Eurowings
25 Sep - 28 Sep	Eurowings
30 Sep - 04 Oct	Eurowings

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

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 September from $230

Return flights