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

Return flights

12 Dec - 13 Dec	Lufthansa
22 Dec - 09 Jan	Lufthansa
19 Dec - 21 Dec	Austrian Airlines
22 Dec - 08 Jan	Lufthansa
19 Dec - 16 Jan	Austrian Airlines
06 Dec - 08 Dec	Vueling Airlines
23 Dec - 08 Jan	Lufthansa
19 Dec - 16 Jan	Air Serbia	direct
19 Dec - 05 Jan	Vueling Airlines
29 Dec - 09 Jan	Air Serbia	direct
29 Dec - 05 Jan	Air Serbia	direct
19 Dec - 05 Jan	Air Serbia	direct
22 Dec - 09 Jan	Air Serbia	direct

Also check the deals for one-way flights from Florence 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 Florence to Belgrade in December from 155€

Return flights