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

Return flights

27 Sep - 30 Sep	Ryanair
27 Sep - 01 Oct	Ryanair
22 Sep - 24 Sep	Ryanair
20 Sep - 24 Sep	Ryanair
15 Sep - 17 Sep	Ryanair
19 Sep - 23 Sep	easyJet
19 Sep - 05 Oct	easyJet
19 Sep - 24 Sep	easyJet
14 Sep - 17 Sep	Ryanair
25 Sep - 29 Sep	Wizz Air UK
17 Sep - 18 Sep	Ryanair
21 Sep - 24 Sep	easyJet
29 Sep - 05 Oct	Wizz Air
29 Sep - 01 Oct	Wizz Air UK
28 Sep - 05 Oct	Wizz Air
29 Sep - 06 Oct	easyJet
30 Sep - 04 Oct	easyJet
28 Sep - 01 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.

Book a cheap hotel in Luxemburg

Cheap car rent in Luxemburg

Cheapest return flights from London to Luxemburg in September from $170

Return flights