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

Return flights

16 Dec - 20 Dec	Ryanair
05 Dec - 07 Dec	Wizz Air
17 Dec - 22 Dec	SKY express
04 Dec - 11 Dec	Ryanair
10 Dec - 17 Dec	Wizz Air
03 Dec - 10 Dec	Wizz Air
16 Dec - 22 Dec	Ryanair
26 Dec - 11 Jan	Air Serbia
10 Dec - 13 Dec	Wizz Air
10 Dec - 14 Dec	Wizz Air
19 Dec - 24 Dec	Vueling Airlines
29 Dec - 07 Jan	Air Serbia
27 Dec - 01 Jan	Air Serbia
21 Dec - 01 Jan	easyJet
27 Dec - 01 Jan	Air Serbia	direct
27 Dec - 07 Jan	Air Serbia
26 Dec - 07 Jan	Air Serbia
25 Dec - 07 Jan	Air Serbia
30 Dec - 07 Jan	Air Serbia
29 Dec - 01 Jan	Air Serbia	direct

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

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 December from 105€

Return flights