Cheapest return flights from Porto to Shannon in August from $105

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

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

Return flights

13 Aug - 31 Aug Ryanair direct
13 Aug - 28 Aug Ryanair direct
13 Aug - 27 Aug Ryanair direct
13 Aug - 20 Aug Ryanair direct
24 Aug - 31 Aug Ryanair direct
20 Aug - 31 Aug Ryanair direct
24 Aug - 28 Aug Ryanair direct
24 Aug - 27 Aug Ryanair direct
20 Aug - 28 Aug Ryanair direct
20 Aug - 27 Aug Ryanair direct
24 Aug - 04 Sep Ryanair direct
20 Aug - 04 Sep Ryanair direct
14 Aug - 04 Sep Ryanair direct
31 Aug - 04 Sep Ryanair direct
31 Aug - 17 Sep Ryanair direct
24 Aug - 10 Sep Ryanair direct
31 Aug - 18 Sep Ryanair direct
31 Aug - 21 Sep Ryanair direct
31 Aug - 10 Sep Ryanair direct
24 Aug - 11 Sep Ryanair direct

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

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 Shannon

Cheap car rent in Shannon