Cheapest return flights from London to Porto in August from $352

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

Return flights

11 Aug - 13 Aug KLM
29 Aug - 03 Sep KLM
28 Aug - 02 Sep Lufthansa
25 Aug - 09 Sep Lufthansa
27 Aug - 01 Sep Lufthansa
20 Aug - 25 Aug Lufthansa
08 Aug - 13 Aug KLM
12 Aug - 26 Aug Lufthansa
28 Aug - 01 Sep Lufthansa
06 Aug - 11 Aug KLM
21 Aug - 25 Aug Lufthansa
19 Aug - 24 Aug KLM
12 Aug - 19 Aug Lufthansa
20 Aug - 27 Aug Lufthansa
23 Aug - 01 Sep SWISS
23 Aug - 26 Aug SWISS
30 Aug - 02 Sep SWISS
29 Aug - 05 Sep KLM
30 Aug - 01 Sep SWISS
31 Aug - 06 Sep KLM

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

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