Cheapest return flights from London to Porto in September from 146€

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

Return flights

12 Sep - 18 Sep Iberia
01 Sep - 08 Sep Iberia
09 Sep - 16 Sep Iberia
09 Sep - 14 Sep Iberia
04 Sep - 08 Sep Iberia
22 Sep - 02 Oct Iberia
14 Sep - 19 Sep Iberia
15 Sep - 22 Sep Iberia
17 Sep - 22 Sep Iberia
05 Sep - 12 Sep Iberia
15 Sep - 19 Sep Vueling Airlines
29 Sep - 14 Oct Vueling Airlines
29 Sep - 15 Oct Vueling Airlines
29 Sep - 07 Oct Vueling Airlines
29 Sep - 05 Oct Vueling Airlines
15 Sep - 05 Oct Vueling Airlines
25 Sep - 09 Oct TAP
26 Sep - 14 Oct Vueling Airlines
26 Sep - 15 Oct Vueling Airlines
26 Sep - 07 Oct Vueling Airlines

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