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

Return flights

25 Dec - 12 Jan	Air Europa
24 Dec - 09 Jan	Air Europa
26 Dec - 12 Jan	Ryanair
22 Dec - 09 Jan	Ryanair
30 Dec - 10 Jan	Ryanair
12 Dec - 15 Dec	TAP
15 Dec - 20 Dec	easyJet
23 Dec - 09 Jan	Ryanair
31 Dec - 04 Jan	Ryanair
13 Dec - 20 Dec	Ryanair
21 Dec - 04 Jan	Ryanair
19 Dec - 21 Dec	Air Europa
15 Dec - 22 Dec	easyJet
30 Dec - 03 Jan	Ryanair
22 Dec - 27 Dec	Air Europa
22 Dec - 05 Jan	Vueling Airlines
26 Dec - 29 Dec	Ryanair
11 Dec - 14 Dec	Ryanair
22 Dec - 29 Dec	Vueling Airlines
22 Dec - 26 Dec	Vueling Airlines

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 $223

Return flights