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

Return flights

15 Sep - 25 Sep	ITA Airways
11 Sep - 18 Sep	ITA Airways
13 Sep - 23 Sep	Aegean Airlines
23 Sep - 30 Sep	ITA Airways
18 Sep - 30 Sep	ITA Airways
16 Sep - 30 Sep	ITA Airways
16 Sep - 22 Sep	ITA Airways
16 Sep - 19 Sep	ITA Airways
18 Sep - 22 Sep	ITA Airways
13 Sep - 24 Sep	Aegean Airlines
30 Sep - 14 Oct	Volotea
30 Sep - 15 Oct	Volotea
19 Sep - 04 Oct	ITA Airways
30 Sep - 16 Oct	Volotea
27 Sep - 04 Oct	Aegean Airlines
24 Sep - 14 Oct	Vueling Airlines
24 Sep - 15 Oct	Vueling Airlines
27 Sep - 14 Oct	Volotea
27 Sep - 15 Oct	Volotea
20 Sep - 09 Oct	Volotea

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.

Book a cheap hotel in Athens

Cheap car rent in Athens

Cheapest return flights from Florence to Athens in September from $173

Return flights