Cheapest return flights from London to Porto in May from $59

Best time to book flights for London (STN) to Porto (OPO) flights at AirHint

AirHint found the following cheapest return flights from London (STN) to Porto (OPO) in May 2025 (see full year).

Return flights

07 May - 22 May Ryanair direct
07 May - 14 May Ryanair direct
07 May - 15 May Ryanair direct
07 May - 23 May Ryanair direct
07 May - 20 May Ryanair direct
13 May - 22 May Ryanair direct
13 May - 14 May Ryanair direct
13 May - 15 May Ryanair direct
13 May - 23 May Ryanair direct
13 May - 20 May Ryanair direct
29 May - 12 Jun Ryanair direct
29 May - 18 Jun Ryanair direct
29 May - 17 Jun Ryanair direct
29 May - 05 Jun Ryanair direct
31 May - 12 Jun Ryanair direct
29 May - 11 Jun Ryanair direct
20 May - 05 Jun Ryanair direct
29 May - 13 Jun Ryanair direct
31 May - 17 Jun Ryanair direct
31 May - 19 Jun Ryanair direct

Also check the deals for one-way flights from London to Porto 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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