Cheapest return flights from Athens to Ljubljana in September from $176

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

Return flights

18 Sep - 22 Sep Air Serbia
23 Sep - 25 Sep Air Serbia
26 Sep - 30 Sep Air Serbia
19 Sep - 22 Sep Air Serbia
19 Sep - 21 Sep Air Serbia
05 Sep - 09 Sep Air Serbia
22 Sep - 29 Sep Air Serbia
22 Sep - 30 Sep Air Serbia
30 Sep - 03 Oct Air Serbia
30 Sep - 07 Oct Air Serbia
07 Sep - 12 Sep Air Serbia
23 Sep - 26 Sep Air Serbia
30 Sep - 07 Oct Aegean Airlines direct
30 Sep - 03 Oct Aegean Airlines direct

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

Skyscanner

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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