Cheapest return flights from London to Porto in September from 225€

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

Return flights

04 Sep - 07 Sep Luxair
04 Sep - 08 Sep Luxair
19 Sep - 22 Sep KLM
25 Sep - 28 Sep Luxair
10 Sep - 14 Sep Luxair
12 Sep - 14 Sep Luxair
11 Sep - 14 Sep Luxair
01 Sep - 08 Sep KLM
11 Sep - 16 Sep KLM
22 Sep - 25 Sep Luxair

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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