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

Return flights

03 Oct - 05 Oct	Ryanair
03 Oct - 07 Oct	Ryanair
27 Oct - 03 Nov	Ryanair
16 Oct - 23 Oct	Air Serbia	direct
01 Oct - 04 Oct	Air Serbia	direct
20 Oct - 23 Oct	Ryanair
17 Oct - 22 Oct	Air Serbia	direct
01 Oct - 05 Oct	Air Serbia	direct
09 Oct - 13 Oct	Aegean Airlines	direct
17 Oct - 21 Oct	Air Serbia
03 Oct - 13 Oct	easyJet
27 Oct - 03 Nov	Air Serbia	direct
31 Oct - 02 Nov	Aegean Airlines	direct

Also check the deals for one-way flights from Athens to Belgrade in October.

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 October from $155

Return flights