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

Return flights

23 Jul - 21 Aug	Ryanair
23 Jul - 29 Aug	Ryanair
27 Jul - 27 Aug	Ryanair
10 Jul - 14 Jul	Ryanair
24 Jul - 30 Jul	Ryanair
24 Jul - 28 Jul	Ryanair
21 Jul - 23 Jul	Ryanair
13 Jul - 16 Jul	Ryanair
21 Jul - 29 Jul	easyJet
22 Jul - 29 Jul	Ryanair
02 Jul - 06 Jul	Ryanair
09 Jul - 12 Jul	Air France
18 Jul - 20 Jul	Ryanair
27 Jul - 03 Aug	Ryanair
26 Jul - 02 Aug	Ryanair

Also check the deals for one-way flights from Porto to Zagreb 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 Zagreb in July from $192

Return flights