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

Return flights

24 Sep - 26 Sep	Ryanair
23 Sep - 26 Sep	Wizz Air Malta
16 Sep - 19 Sep	Ryanair
02 Sep - 14 Sep	Norwegian Air Sweden AOC
07 Sep - 10 Sep	Wizz Air
26 Sep - 29 Sep	Ryanair
17 Sep - 29 Sep	Air Serbia	direct
05 Sep - 08 Sep	Wizz Air
29 Sep - 06 Oct	Ryanair
16 Sep - 29 Sep	Air Serbia	direct
24 Sep - 29 Sep	easyJet
30 Sep - 01 Oct	Aegean Airlines
26 Sep - 01 Oct	Ryanair
30 Sep - 04 Oct	Air Serbia
23 Sep - 01 Oct	Air Serbia	direct
30 Sep - 07 Oct	Air Serbia	direct
29 Sep - 04 Oct	Ryanair
29 Sep - 05 Oct	Ryanair
29 Sep - 06 Oct	Aegean Airlines	direct
30 Sep - 01 Oct	Air Serbia	direct

Also check the deals for one-way flights from Athens to Belgrade 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 Athens to Belgrade in September from 106€

Return flights