Cheapest return flights from Porto to London in August from $204

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

Return flights

21 Aug - 28 Aug Ryanair direct
22 Aug - 28 Aug Ryanair direct
22 Aug - 30 Aug Ryanair direct
22 Aug - 31 Aug Ryanair direct
22 Aug - 29 Aug Ryanair direct
22 Aug - 27 Aug Ryanair direct
21 Aug - 25 Aug Ryanair direct
22 Aug - 26 Aug Ryanair direct
22 Aug - 01 Sep Ryanair direct
30 Aug - 01 Sep Ryanair
27 Aug - 16 Sep Ryanair direct
22 Aug - 25 Aug Ryanair direct
22 Aug - 09 Sep Ryanair direct
22 Aug - 03 Sep Ryanair direct
22 Aug - 02 Sep Ryanair direct
27 Aug - 28 Aug Ryanair direct
27 Aug - 15 Sep Ryanair direct
22 Aug - 08 Sep Ryanair direct
26 Aug - 02 Sep Ryanair
30 Aug - 13 Sep Ryanair

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