Cheapest return flights from Porto to London in September from 112€

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

Return flights

17 Sep - 22 Sep Ryanair direct
17 Sep - 28 Sep Ryanair direct
17 Sep - 05 Oct Ryanair direct
17 Sep - 27 Sep Ryanair direct
17 Sep - 04 Oct Ryanair direct
17 Sep - 21 Sep Ryanair direct
11 Sep - 22 Sep Ryanair direct
24 Sep - 28 Sep Ryanair direct
24 Sep - 05 Oct Ryanair direct
24 Sep - 27 Sep Ryanair direct
24 Sep - 04 Oct Ryanair direct
11 Sep - 15 Sep Ryanair direct
11 Sep - 28 Sep Ryanair direct
11 Sep - 27 Sep Ryanair direct
16 Sep - 05 Oct Ryanair direct
24 Sep - 10 Oct Ryanair direct
16 Sep - 04 Oct Ryanair direct
24 Sep - 09 Oct Ryanair direct
17 Sep - 02 Oct Ryanair direct
24 Sep - 02 Oct Ryanair direct

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

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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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