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

Return flights

08 Jul - 10 Jul	Ryanair
08 Jul - 11 Jul	Ryanair
09 Jul - 11 Jul	Vueling Airlines
03 Jul - 09 Jul	Ryanair
07 Jul - 10 Jul	Ryanair
21 Jul - 28 Jul	Ryanair
17 Jul - 24 Jul	Air Serbia
26 Jul - 02 Aug	Ryanair
06 Jul - 10 Jul	Ryanair
21 Jul - 24 Jul	Ryanair
07 Jul - 11 Jul	Ryanair
31 Jul - 04 Aug	Ryanair
29 Jul - 01 Aug	Ryanair
27 Jul - 14 Aug	Ryanair
27 Jul - 14 Aug	Air Serbia	direct

Also check the deals for one-way flights from Porto to Belgrade in July.

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 July from 210€

Return flights