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

Return flights

10 Dec - 13 Dec	easyJet
26 Dec - 12 Jan	Ryanair
06 Dec - 09 Dec	Wizz Air Malta
01 Dec - 12 Dec	easyJet
12 Dec - 14 Dec	Ryanair
15 Dec - 19 Dec	Vueling Airlines
06 Dec - 08 Dec	Wizz Air Malta
19 Dec - 09 Jan	Ryanair
19 Dec - 22 Dec	Ryanair
22 Dec - 09 Jan	Vueling Airlines
27 Dec - 31 Dec	Ryanair
22 Dec - 29 Dec	Vueling Airlines
19 Dec - 05 Jan	Ryanair
12 Dec - 26 Dec	Ryanair
26 Dec - 12 Jan	Air Serbia	direct
29 Dec - 02 Jan	Vueling Airlines
29 Dec - 02 Jan	Air Serbia	direct
22 Dec - 09 Jan	Air Serbia	direct
19 Dec - 05 Jan	Air Serbia	direct
19 Dec - 09 Jan	Air Serbia	direct

Also check the deals for one-way flights from Porto 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 Porto to Belgrade in December from 136€

Return flights