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

Return flights

29 Jul - 05 Aug	Ryanair
29 Jul - 14 Aug	Ryanair	direct
29 Jul - 06 Aug	Ryanair
29 Jul - 13 Aug	Ryanair
29 Jul - 10 Aug	Ryanair
29 Jul - 31 Jul	Ryanair
29 Jul - 11 Aug	Ryanair
29 Jul - 31 Jul	Ryanair	direct
29 Jul - 17 Aug	Ryanair
29 Jul - 01 Aug	Ryanair
29 Jul - 18 Aug	Ryanair
29 Jul - 08 Aug	Ryanair
29 Jul - 30 Jul	Ryanair
27 Jul - 30 Jul	Vueling Airlines
28 Jul - 31 Jul	Vueling Airlines
30 Jul - 31 Jul	Vueling Airlines
28 Jul - 29 Jul	Vueling Airlines

Also check the deals for one-way flights from Cagliari to Porto 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 Cagliari to Porto in July from 177€

Return flights