Cheapest return flights from Porto to London in September from $101

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

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

Return flights

26 Sep - 14 Oct Ryanair direct
26 Sep - 30 Sep Ryanair direct
26 Sep - 29 Sep Ryanair direct
26 Sep - 01 Oct Ryanair direct
26 Sep - 07 Oct Ryanair direct
26 Sep - 08 Oct Ryanair direct
26 Sep - 15 Oct Ryanair direct
26 Sep - 28 Sep Ryanair direct
26 Sep - 06 Oct Ryanair direct
26 Sep - 12 Oct Ryanair direct
26 Sep - 13 Oct Ryanair direct
26 Sep - 27 Sep Ryanair direct
24 Sep - 14 Oct Ryanair direct
26 Sep - 09 Oct Ryanair direct
24 Sep - 29 Sep Ryanair direct
17 Sep - 22 Sep Ryanair direct
17 Sep - 30 Sep Ryanair direct
17 Sep - 29 Sep Ryanair direct
13 Sep - 22 Sep Ryanair direct
13 Sep - 30 Sep Ryanair direct

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

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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