AirHint found the following cheapest return flights from Cagliari (CAG) to Porto (OPO) in May 2026 (see full year).

Return flights

22 May - 10 Jun	Ryanair
25 May - 10 Jun	Ryanair
26 May - 10 Jun	Ryanair
08 May - 15 May	Ryanair	direct
13 May - 15 May	Ryanair	direct
11 May - 15 May	Ryanair	direct
05 May - 08 May	Ryanair	direct
04 May - 08 May	Ryanair	direct
05 May - 15 May	Ryanair	direct
05 May - 06 May	Ryanair
22 May - 12 Jun	Ryanair	direct
25 May - 12 Jun	Ryanair	direct
26 May - 12 Jun	Ryanair	direct
04 May - 05 May	Ryanair
19 May - 27 May	Ryanair
19 May - 09 Jun	Ryanair
22 May - 27 May	Ryanair
22 May - 09 Jun	Ryanair
25 May - 09 Jun	Ryanair
26 May - 09 Jun	Ryanair

Also check the deals for one-way flights from Cagliari to Porto in May.

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 May from 108€

Return flights