Cheapest return flights from Porto to London in May from $133

AirHint found the following cheapest return flights from Porto (OPO) to London (STN) in May 2026 (see full year).

Return flights

12 May - 12 May Ryanair direct
08 May - 12 May Ryanair direct
03 May - 12 May Ryanair direct
10 May - 12 May Ryanair direct
08 May - 09 May Ryanair direct
12 May - 19 May Ryanair
03 May - 09 May Ryanair direct
19 May - 07 Jun Ryanair direct
19 May - 06 Jun Ryanair direct
19 May - 19 May Ryanair direct
19 May - 01 Jun Ryanair direct
12 May - 19 May Ryanair direct
19 May - 27 May Ryanair direct
12 May - 01 Jun Ryanair direct
20 May - 07 Jun Ryanair direct
20 May - 06 Jun Ryanair direct
20 May - 01 Jun Ryanair direct
20 May - 09 Jun Ryanair direct
22 May - 07 Jun Ryanair direct
22 May - 06 Jun Ryanair direct

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

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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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