AirHint found the following cheapest return flights from Athens (ATH) to Ljubljana (LJU) in May 2026 (see full year).

Return flights

19 May - 22 May	Aegean Airlines	direct
22 May - 26 May	Aegean Airlines	direct
12 May - 15 May	Aegean Airlines
12 May - 15 May	Aegean Airlines	direct
12 May - 12 May	Aegean Airlines
12 May - 17 May	Aegean Airlines
01 May - 05 May	Air Serbia
21 May - 24 May	Air Serbia
09 May - 12 May	Air Serbia
15 May - 19 May	Air Serbia
30 May - 01 Jun	Air Serbia
29 May - 02 Jun	Air Serbia
29 May - 01 Jun	Air Serbia
30 May - 02 Jun	Air Serbia
29 May - 02 Jun	Aegean Airlines	direct

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

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 May from 139€

Return flights