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

Return flights

06 May - 10 May	Ryanair
06 May - 09 May	Ryanair
07 May - 10 May	Ryanair
14 May - 17 May	Ryanair
10 May - 15 May	Ryanair
15 May - 18 May	Ryanair
30 May - 02 Jun	Ryanair
30 May - 06 Jun	Ryanair
19 May - 24 May	Ryanair
18 May - 08 Jun	Ryanair
11 May - 24 May	Ryanair
20 May - 24 May	Ryanair
02 May - 04 May	Ryanair

Also check the deals for one-way flights from Rome 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 Rome to Porto in May from 248€

Return flights