Cheapest return LCY–LIS flights, September

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

Return flights

26 Sep - 29 Sep KLM
28 Sep - 01 Oct KLM
02 Sep - 23 Sep KLM
02 Sep - 15 Sep KLM
02 Sep - 11 Sep KLM
02 Sep - 09 Sep KLM
29 Sep - 02 Oct KLM
14 Sep - 17 Sep KLM
21 Sep - 25 Sep KLM
14 Sep - 23 Sep KLM
18 Sep - 21 Sep Luxair
02 Sep - 04 Sep KLM
30 Sep - 07 Oct Iberia
28 Sep - 15 Oct KLM
29 Sep - 04 Oct Iberia
30 Sep - 05 Oct Iberia
17 Sep - 04 Oct Iberia
28 Sep - 03 Oct KLM
30 Sep - 03 Oct KLM
27 Sep - 07 Oct KLM

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

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