Cheapest return flights from London to Porto in August from $379

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

Return flights

28 Aug - 04 Sep KLM
28 Aug - 05 Sep KLM
28 Aug - 31 Aug Luxair
03 Aug - 05 Aug Luxair
29 Aug - 31 Aug SWISS
17 Aug - 30 Aug KLM
25 Aug - 02 Sep KLM
10 Aug - 22 Aug KLM
20 Aug - 21 Aug KLM
04 Aug - 11 Aug Lufthansa
21 Aug - 23 Aug KLM
20 Aug - 20 Aug Lufthansa
14 Aug - 17 Aug KLM
25 Aug - 03 Sep Lufthansa
30 Aug - 03 Sep Luxair

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

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