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

Return flights

18 Sep - 22 Sep	Ryanair
25 Sep - 06 Oct	Ryanair
15 Sep - 22 Sep	Ryanair
12 Sep - 16 Sep	Ryanair
24 Sep - 28 Sep	Ryanair
02 Sep - 09 Sep	Ryanair
13 Sep - 21 Sep	easyJet
05 Sep - 11 Sep	Ryanair
07 Sep - 11 Sep	Ryanair
01 Sep - 05 Sep	Aeroitalia
18 Sep - 21 Sep	Ryanair
20 Sep - 04 Oct	Vueling Airlines
20 Sep - 11 Oct	Vueling Airlines
13 Sep - 04 Oct	Vueling Airlines
18 Sep - 04 Oct	Vueling Airlines
29 Sep - 18 Oct	Vueling Airlines
29 Sep - 04 Oct	Vueling Airlines
10 Sep - 01 Oct	Vueling Airlines
29 Sep - 11 Oct	Vueling Airlines
11 Sep - 02 Oct	Vueling Airlines

Also check the deals for one-way flights from Cagliari 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 Cagliari to Athens in September from $186

Return flights