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

Return flights

10 Dec - 17 Dec	Wizz Air UK
10 Dec - 14 Dec	Wizz Air
03 Dec - 09 Dec	Wizz Air
10 Dec - 15 Dec	Wizz Air
03 Dec - 10 Dec	Wizz Air
10 Dec - 13 Dec	Wizz Air
18 Dec - 21 Dec	Ryanair
05 Dec - 09 Dec	Wizz Air
08 Dec - 10 Dec	Ryanair
03 Dec - 07 Dec	Wizz Air
22 Dec - 08 Jan	Ryanair
22 Dec - 09 Jan	Ryanair
23 Dec - 04 Jan	Ryanair
27 Dec - 08 Jan	Air Serbia	direct
22 Dec - 08 Jan	Air Serbia	direct
22 Dec - 09 Jan	Air Serbia	direct
30 Dec - 01 Jan	Air Serbia	direct
25 Dec - 08 Jan	Air Serbia	direct
27 Dec - 07 Jan	Air Serbia
26 Dec - 07 Jan	Air Serbia

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 $126

Return flights