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

One-Way flights

20 May	Ryanair	direct
19 May	Ryanair	direct
10 May	Ryanair	direct
24 May	Ryanair	direct
14 May	Ryanair	direct
08 May	Ryanair	direct
22 May	Ryanair	direct
03 May	Ryanair	direct
23 May	Ryanair	direct
05 May	Vueling Airlines

Also check the deals for return flights from Porto to London in May.

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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Cheapest one-way flights from Porto to London in May from 42€

One-Way flights