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

Return flights

30 Sep - 06 Oct	easyJet
22 Sep - 24 Sep	Vueling Airlines
29 Sep - 06 Oct	KLM
29 Sep - 05 Oct	KLM
23 Sep - 24 Sep	easyJet
22 Sep - 25 Sep	Vueling Airlines
25 Sep - 28 Sep	easyJet
26 Sep - 28 Sep	easyJet
27 Sep - 28 Sep	easyJet
28 Sep - 29 Sep	easyJet
21 Sep - 28 Sep	easyJet
19 Sep - 22 Sep	easyJet
18 Sep - 21 Sep	easyJet
29 Sep - 06 Oct	Luxair	direct
30 Sep - 06 Oct	Luxair	direct
29 Sep - 05 Oct	Luxair	direct

Also check the deals for one-way flights from Geneva 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 Geneva to Luxemburg in September from $209

Return flights