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

Return flights

04 May - 12 May	Vueling Airlines
04 May - 13 May	Vueling Airlines
12 May - 13 May	Vueling Airlines
04 May - 16 May	Vueling Airlines
04 May - 18 May	Vueling Airlines
04 May - 09 May	Vueling Airlines
12 May - 16 May	Vueling Airlines
12 May - 18 May	Vueling Airlines
13 May - 16 May	Vueling Airlines
13 May - 18 May	Vueling Airlines
29 May - 01 Jun	Vueling Airlines
29 May - 01 Jun	TAP	direct

Also check the deals for one-way 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 return flights from Porto to London in May from 128€

Return flights