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

Return flights

10 Dec - 17 Dec	Ryanair
11 Dec - 15 Dec	Ryanair
11 Dec - 14 Dec	Ryanair
22 Dec - 27 Dec	Vueling Airlines
12 Dec - 15 Dec	Ryanair
13 Dec - 19 Dec	Air Europa
09 Dec - 12 Dec	TAP
30 Dec - 10 Jan	Ryanair
24 Dec - 09 Jan	Ryanair
17 Dec - 26 Dec	Ryanair
10 Dec - 14 Dec	Ryanair
31 Dec - 11 Jan	Ryanair
26 Dec - 30 Dec	Ryanair
29 Dec - 09 Jan	Air Europa
29 Dec - 11 Jan	Air Serbia
26 Dec - 05 Jan	Ryanair
30 Dec - 02 Jan	Ryanair
29 Dec - 05 Jan	Ryanair
29 Dec - 05 Jan	Air Serbia	direct
29 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 174€

Return flights