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

Return flights

02 Sep - 09 Sep	SWISS
08 Sep - 16 Sep	SWISS
16 Sep - 23 Sep	SWISS
23 Sep - 30 Sep	ITA Airways
14 Sep - 17 Sep	ITA Airways
15 Sep - 22 Sep	ITA Airways
22 Sep - 25 Sep	Vueling Airlines
06 Sep - 12 Sep	ITA Airways
22 Sep - 24 Sep	Vueling Airlines
05 Sep - 08 Sep	Austrian Airlines
26 Sep - 05 Oct	ITA Airways
29 Sep - 05 Oct	Volotea
24 Sep - 15 Oct	Vueling Airlines
30 Sep - 15 Oct	Vueling Airlines
22 Sep - 04 Oct	Vueling Airlines
22 Sep - 08 Oct	Vueling Airlines
19 Sep - 04 Oct	ITA Airways
26 Sep - 15 Oct	Vueling Airlines
23 Sep - 04 Oct	Vueling Airlines
16 Sep - 04 Oct	Vueling Airlines

Also check the deals for one-way flights from Florence to Athens 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 Athens in September from $209

Return flights