AirHint found the following cheapest return flights from Rome (CIA) to Porto (OPO) in December 2025 (see full year).

Return flights

06 Dec - 09 Dec	Ryanair
02 Dec - 07 Dec	Ryanair
11 Dec - 14 Dec	Ryanair
12 Dec - 14 Dec	Ryanair
06 Dec - 08 Dec	Ryanair
13 Dec - 14 Dec	Ryanair
04 Dec - 09 Dec	Ryanair
04 Dec - 07 Dec	Ryanair
07 Dec - 09 Dec	Ryanair
27 Dec - 01 Jan	Ryanair
26 Dec - 31 Dec	Ryanair
31 Dec - 02 Jan	Ryanair

Also check the deals for one-way flights from Rome to Porto in December.

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 December from 173€

Return flights