Cheapest return flights from London to Porto in August from $328

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

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

Return flights

27 Aug - 02 Sep KLM
19 Aug - 02 Sep KLM
20 Aug - 03 Sep Lufthansa
13 Aug - 20 Aug Lufthansa
13 Aug - 21 Aug Lufthansa
11 Aug - 19 Aug Lufthansa
18 Aug - 26 Aug Lufthansa
25 Aug - 04 Sep Lufthansa
20 Aug - 25 Aug Lufthansa
27 Aug - 03 Sep KLM
30 Aug - 03 Sep KLM
15 Aug - 19 Aug Lufthansa
22 Aug - 27 Aug Lufthansa
28 Aug - 02 Sep KLM
29 Aug - 02 Sep Lufthansa
06 Aug - 13 Aug Lufthansa
22 Aug - 26 Aug Lufthansa
21 Aug - 01 Sep Lufthansa
25 Aug - 01 Sep Lufthansa
13 Aug - 18 Aug Lufthansa

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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