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

Return flights

27 Sep - 04 Oct	Ryanair
25 Sep - 01 Oct	Ryanair
27 Sep - 30 Sep	Ryanair
20 Sep - 23 Sep	Ryanair
22 Sep - 30 Sep	Ryanair
19 Sep - 23 Sep	easyJet
23 Sep - 30 Sep	Ryanair
26 Sep - 30 Sep	easyJet
15 Sep - 17 Sep	Ryanair
17 Sep - 25 Sep	Ryanair
25 Sep - 30 Sep	Ryanair
23 Sep - 25 Sep	Jet2
30 Sep - 02 Oct	Ryanair
30 Sep - 05 Oct	Wizz Air UK
29 Sep - 06 Oct	Wizz Air UK
26 Sep - 01 Oct	easyJet
28 Sep - 05 Oct	Wizz Air UK
26 Sep - 05 Oct	easyJet
29 Sep - 03 Oct	Wizz Air UK

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 127€

Return flights