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

Return flights

23 Jan - 30 Jan	Air Serbia
17 Jan - 22 Jan	Air Serbia
19 Jan - 24 Jan	Air Serbia
15 Jan - 18 Jan	Air Serbia
19 Jan - 25 Jan	Air Serbia
16 Jan - 18 Jan	Air Serbia
30 Jan - 02 Feb	Air Serbia
13 Jan - 18 Jan	Air Serbia
13 Jan - 19 Jan	Air Serbia
14 Jan - 19 Jan	Air Serbia
15 Jan - 22 Jan	Air Serbia
29 Jan - 03 Feb	Air Serbia
29 Jan - 01 Feb	Air Serbia
30 Jan - 01 Feb	Air Serbia
23 Jan - 01 Feb	Air Serbia
24 Jan - 01 Feb	Air Serbia
27 Jan - 01 Feb	Air Serbia
25 Jan - 01 Feb	Air Serbia
26 Jan - 01 Feb	Air Serbia
28 Jan - 01 Feb	Ryanair

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

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 January from $167

Return flights