Cheapest return flights from London to Porto in August from $173

Best time to book flights for London (LHR) to Porto (OPO) flights at AirHint

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

Return flights

27 Aug - 11 Sep Vueling Airlines
27 Aug - 12 Sep Vueling Airlines
27 Aug - 16 Sep Vueling Airlines
26 Aug - 11 Sep Vueling Airlines
25 Aug - 11 Sep Vueling Airlines
26 Aug - 12 Sep Vueling Airlines
27 Aug - 10 Sep Vueling Airlines
25 Aug - 12 Sep Vueling Airlines
27 Aug - 15 Sep Vueling Airlines
27 Aug - 09 Sep Vueling Airlines
04 Aug - 09 Aug British Airways
13 Aug - 19 Aug British Airways
02 Aug - 06 Aug British Airways
23 Aug - 27 Aug British Airways
14 Aug - 20 Aug British Airways
22 Aug - 27 Aug Scandinavian Airlines
04 Aug - 08 Aug British Airways
21 Aug - 26 Aug SWISS
02 Aug - 05 Aug British Airways
14 Aug - 19 Aug TAP

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

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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