Cheapest return flights from London to Porto in September from 92€

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

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

Return flights

28 Sep - 08 Oct Ryanair direct
28 Sep - 15 Oct Ryanair direct
25 Sep - 08 Oct Ryanair direct
25 Sep - 15 Oct Ryanair direct
16 Sep - 24 Sep Ryanair direct
09 Sep - 24 Sep Ryanair direct
29 Sep - 08 Oct Ryanair direct
29 Sep - 15 Oct Ryanair direct
30 Sep - 08 Oct Ryanair direct
30 Sep - 15 Oct Ryanair direct
22 Sep - 08 Oct Ryanair direct
28 Sep - 10 Oct Ryanair direct
22 Sep - 24 Sep Ryanair direct
15 Sep - 24 Sep Ryanair direct
08 Sep - 24 Sep Ryanair direct
02 Sep - 17 Sep Ryanair direct
02 Sep - 19 Sep Ryanair direct
16 Sep - 26 Sep Ryanair direct
16 Sep - 17 Sep Ryanair direct
16 Sep - 19 Sep Ryanair direct

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