Cheapest return ATH–BEG flights, September

AirHint found the following cheapest return flights from Athens (ATH) to Belgrade (BEG) in September 2026 (see full year).

Return flights

17 Sep - 22 Sep Aegean Airlines direct
04 Sep - 08 Sep Aegean Airlines direct
18 Sep - 21 Sep Aegean Airlines direct
17 Sep - 21 Sep Aegean Airlines direct
24 Sep - 28 Sep Air Serbia direct
25 Sep - 28 Sep Aegean Airlines direct
26 Sep - 28 Sep Aegean Airlines direct
16 Sep - 21 Sep Aegean Airlines direct
19 Sep - 21 Sep Aegean Airlines direct
14 Sep - 17 Sep Aegean Airlines direct

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

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