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

Return flights

15 Dec - 17 Jan	Ryanair
13 Dec - 16 Jan	Ryanair
13 Dec - 24 Jan	Ryanair
13 Dec - 15 Jan	Ryanair
13 Dec - 25 Jan	Ryanair
01 Dec - 03 Dec	Air Serbia	direct
20 Dec - 11 Jan	Ryanair
26 Dec - 11 Jan	Ryanair
17 Dec - 25 Jan	Lufthansa	direct
12 Dec - 16 Jan	easyJet
29 Dec - 06 Jan	Ryanair
22 Dec - 24 Dec	easyJet
20 Dec - 27 Dec	Ryanair
01 Dec - 04 Dec	Ryanair
06 Dec - 08 Dec	easyJet
02 Dec - 08 Dec	easyJet
20 Dec - 22 Dec	easyJet
04 Dec - 08 Dec	easyJet
14 Dec - 16 Dec	easyJet
05 Dec - 08 Dec	Ryanair

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 $150

Return flights