Cheapest return flights from London to Porto in August from $375

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

20 Aug - 27 Aug Lufthansa
20 Aug - 26 Aug Lufthansa
20 Aug - 02 Sep Lufthansa
30 Aug - 03 Sep SWISS
30 Aug - 02 Sep SWISS
25 Aug - 02 Sep Lufthansa
19 Aug - 26 Aug SWISS
21 Aug - 28 Aug SWISS
22 Aug - 28 Aug SWISS
21 Aug - 27 Aug SWISS
21 Aug - 26 Aug SWISS
29 Aug - 02 Sep SWISS
29 Aug - 03 Sep SWISS
20 Aug - 04 Sep Lufthansa
14 Aug - 21 Aug SWISS
28 Aug - 04 Sep SWISS
14 Aug - 04 Sep SWISS
30 Aug - 04 Sep SWISS
12 Aug - 18 Aug British Airways
14 Aug - 18 Aug KLM

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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