Cheapest return flights from Porto to Shannon in May from 48€

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 May 2025 (see full year).

Return flights

14 May - 18 May Ryanair direct
22 May - 12 Jun Ryanair direct
29 May - 12 Jun Ryanair direct
22 May - 05 Jun Ryanair direct
22 May - 11 Jun Ryanair direct
29 May - 05 Jun Ryanair direct
29 May - 11 Jun Ryanair direct
21 May - 05 Jun Ryanair direct
14 May - 15 May Ryanair direct
15 May - 18 May Ryanair direct
15 May - 05 Jun Ryanair direct
29 May - 18 Jun Ryanair direct
28 May - 12 Jun Ryanair direct
14 May - 22 May Ryanair direct
21 May - 22 May Ryanair direct
14 May - 28 May Ryanair direct
22 May - 28 May Ryanair direct
21 May - 28 May Ryanair direct
15 May - 22 May Ryanair direct
15 May - 28 May Ryanair direct

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

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.

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