Cheapest return flights from London to Porto in August from $242

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

31 Aug - 13 Sep British Airways
27 Aug - 11 Sep TAP
31 Aug - 17 Sep Vueling Airlines
22 Aug - 23 Sep Eurowings
22 Aug - 03 Sep Brussels Airlines
27 Aug - 16 Sep Vueling Airlines
24 Aug - 03 Sep Brussels Airlines
30 Aug - 03 Sep Brussels Airlines
29 Aug - 03 Sep Brussels Airlines
31 Aug - 16 Sep Vueling Airlines
12 Aug - 13 Aug British Airways
07 Aug - 13 Aug British Airways
05 Aug - 13 Aug British Airways
08 Aug - 13 Aug Iberia
06 Aug - 13 Aug British Airways
26 Aug - 27 Aug British Airways
10 Aug - 12 Aug British Airways
11 Aug - 13 Aug Iberia
03 Aug - 06 Aug Iberia
05 Aug - 08 Aug Iberia

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

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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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