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

Return flights

01 Aug - 26 Aug	easyJet	direct
01 Aug - 31 Aug	easyJet	direct
01 Aug - 16 Aug	easyJet	direct
01 Aug - 10 Aug	easyJet	direct
06 Aug - 12 Aug	Ryanair
11 Aug - 25 Aug	easyJet	direct
04 Aug - 18 Aug	easyJet	direct
12 Aug - 20 Aug	easyJet
06 Aug - 09 Aug	easyJet	direct
06 Aug - 10 Aug	easyJet	direct
29 Aug - 01 Sep	Ryanair
27 Aug - 03 Sep	Ryanair
22 Aug - 01 Sep	easyJet	direct
25 Aug - 01 Sep	Ryanair
30 Aug - 14 Sep	Ryanair
26 Aug - 16 Sep	Vueling Airlines
30 Aug - 13 Sep	Ryanair
23 Aug - 02 Sep	TAP
29 Aug - 14 Sep	TAP
13 Aug - 02 Sep	Vueling Airlines

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

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 August from 126€

Return flights