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

Return flights

17 Sep - 21 Sep	Ryanair
12 Sep - 15 Sep	Ryanair
11 Sep - 15 Sep	Ryanair
15 Sep - 17 Sep	Ryanair
10 Sep - 16 Sep	Vueling Airlines
03 Sep - 14 Sep	Ryanair
03 Sep - 07 Sep	Aeroitalia
28 Sep - 05 Oct	Vueling Airlines
14 Sep - 17 Sep	Ryanair
28 Sep - 05 Oct	Luxair	direct
17 Sep - 21 Sep	Luxair	direct
14 Sep - 17 Sep	Luxair	direct

Also check the deals for one-way flights from Cagliari 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 Cagliari to Luxemburg in September from $174

Return flights