Cheapest return flights from London to Porto in May from 176€

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

Return flights

09 May - 12 May Iberia
01 May - 08 Jun TAP
04 May - 20 May TAP
07 May - 17 May TAP
08 May - 17 May TAP
01 May - 05 May TAP
15 May - 19 May TAP
05 May - 10 May TAP
03 May - 10 May TAP
04 May - 09 May TAP
13 May - 17 May TAP
28 May - 04 Jun TAP
27 May - 01 Jun TAP
29 May - 01 Jun TAP

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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