Cheapest return flights from Shannon to Porto in September from 106€

Best time to book flights for Shannon (SNN) to Porto (OPO) flights at AirHint

AirHint found the following cheapest return flights from Shannon (SNN) to Porto (OPO) in September 2025 (see full year).

Return flights

18 Sep - 02 Oct Ryanair direct
24 Sep - 02 Oct Ryanair direct
03 Sep - 18 Sep Ryanair direct
25 Sep - 02 Oct Ryanair direct
18 Sep - 28 Sep Ryanair direct
24 Sep - 28 Sep Ryanair direct
25 Sep - 28 Sep Ryanair direct
18 Sep - 21 Sep Ryanair direct
03 Sep - 21 Sep Ryanair direct
30 Sep - 07 Oct Ryanair
03 Sep - 07 Sep Ryanair direct
24 Sep - 27 Sep Ryanair
18 Sep - 08 Oct Ryanair direct
24 Sep - 08 Oct Ryanair direct
25 Sep - 08 Oct Ryanair direct

Also check the deals for one-way flights from Shannon to Porto in September.

Skyscanner

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.

Book a cheap hotel in Porto

Cheap car rent in Porto