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

Return flights

20 Sep - 23 Sep	Ryanair
13 Sep - 20 Sep	Ryanair
16 Sep - 19 Sep	Wizz Air UK
19 Sep - 23 Sep	Wizz Air UK
10 Sep - 12 Sep	Wizz Air
16 Sep - 20 Sep	Wizz Air UK
17 Sep - 20 Sep	Wizz Air
24 Sep - 26 Sep	Wizz Air UK
09 Sep - 20 Sep	Wizz Air
01 Sep - 17 Sep	Wizz Air
30 Sep - 07 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 140€

Return flights