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

Return flights

05 Dec - 08 Dec	Air Serbia	direct
18 Dec - 21 Dec	Air Serbia	direct
27 Dec - 30 Dec	Lufthansa	direct
22 Dec - 28 Dec	Lufthansa	direct
30 Dec - 11 Jan	Lufthansa
23 Dec - 28 Dec	Lufthansa
21 Dec - 26 Dec	Air Serbia	direct
23 Dec - 30 Dec	Air Serbia	direct
24 Dec - 09 Jan	Air Serbia	direct
23 Dec - 01 Jan	Air Serbia	direct
20 Dec - 25 Dec	Air Serbia
18 Dec - 28 Dec	Air Serbia	direct
20 Dec - 26 Dec	Air Serbia
29 Dec - 02 Jan	Air Serbia	direct
30 Dec - 11 Jan	Air Serbia	direct

Also check the deals for one-way flights from Frankfurt 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 Frankfurt to Belgrade in December from 183€

Return flights