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

Return flights

31 Jul - 05 Aug	Air Serbia
25 Jul - 29 Jul	Air Serbia
18 Jul - 21 Jul	Air Serbia
26 Jul - 28 Jul	Air Serbia
20 Jul - 28 Jul	Air Serbia
29 Jul - 29 Aug	Air Serbia
12 Jul - 21 Jul	Air Serbia
11 Jul - 14 Jul	Air Serbia
05 Jul - 14 Jul	Air Serbia
06 Jul - 12 Jul	Air Serbia
20 Jul - 24 Jul	Air Serbia
24 Jul - 27 Jul	Air Serbia
29 Jul - 01 Aug	Air Serbia
29 Jul - 01 Aug	Aegean Airlines	direct

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

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 Athens to Ljubljana in July from 158€

Return flights