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

Return flights

17 Sep - 24 Sep	Lufthansa
09 Sep - 14 Sep	Lufthansa
20 Sep - 22 Sep	SWISS
04 Sep - 24 Sep	Lufthansa
25 Sep - 05 Oct	SWISS
19 Sep - 21 Sep	SWISS
18 Sep - 21 Sep	SWISS
18 Sep - 25 Sep	SWISS
07 Sep - 21 Sep	SWISS
21 Sep - 23 Sep	Vueling Airlines
18 Sep - 25 Sep	Luxair	direct
28 Sep - 02 Oct	Vueling Airlines
28 Sep - 09 Oct	SWISS
28 Sep - 12 Oct	SWISS
28 Sep - 12 Oct	Luxair	direct
28 Sep - 09 Oct	Luxair	direct
25 Sep - 05 Oct	Luxair	direct
28 Sep - 02 Oct	Luxair	direct

Also check the deals for one-way flights from Florence 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 Florence to Luxemburg in September from 132€

Return flights