AirHint found the following cheapest return flights from London (LGW) to Luxemburg (LUX) in September 2025 (see full year).

Return flights

30 Sep - 01 Oct	Wizz Air Malta
22 Sep - 23 Sep	Wizz Air Malta
24 Sep - 25 Sep	Wizz Air Malta
22 Sep - 24 Sep	Wizz Air Malta
16 Sep - 17 Sep	Vueling Airlines
23 Sep - 24 Sep	Vueling Airlines
16 Sep - 18 Sep	Wizz Air Malta
17 Sep - 18 Sep	Wizz Air Malta
23 Sep - 25 Sep	Vueling Airlines
13 Sep - 16 Sep	Ryanair
15 Sep - 17 Sep	Wizz Air Malta
27 Sep - 01 Oct	Ryanair
29 Sep - 05 Oct	Ryanair
29 Sep - 01 Oct	Ryanair
27 Sep - 04 Oct	Ryanair
28 Sep - 04 Oct	easyJet

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

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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Cheapest return flights from London to Luxemburg in September from 98€

Return flights