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

Return flights

21 Jul - 30 Jul	Ryanair
31 Jul - 08 Aug	Lufthansa
10 Jul - 17 Jul	TAP
24 Jul - 27 Jul	Lufthansa
14 Jul - 18 Jul	Ryanair
30 Jul - 06 Aug	Lufthansa
31 Jul - 07 Aug	Ryanair
18 Jul - 19 Jul	Ryanair
25 Jul - 27 Jul	Ryanair
09 Jul - 16 Jul	Wizz Air Malta
11 Jul - 17 Jul	easyJet
27 Jul - 31 Jul	Ryanair
14 Jul - 17 Jul	Ryanair
31 Jul - 07 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 231€

Return flights