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

Return flights

24 Sep - 08 Oct	Lufthansa
09 Sep - 16 Sep	Delta
09 Sep - 23 Sep	Delta
23 Sep - 07 Oct	Air Canada
23 Sep - 08 Oct	Air Canada
27 Sep - 08 Oct	British Airways
28 Sep - 08 Oct	British Airways
25 Sep - 08 Oct	Lufthansa
22 Sep - 06 Oct	Delta
29 Sep - 08 Oct	Lufthansa
10 Sep - 16 Sep	British Airways
16 Sep - 30 Sep	Delta
11 Sep - 16 Sep	Delta
26 Sep - 08 Oct	British Airways
17 Sep - 23 Sep	Frontier Airlines
16 Sep - 24 Sep	British Airways
30 Sep - 25 Oct	British Airways
12 Sep - 27 Sep	Frontier Airlines
08 Sep - 15 Sep	Frontier Airlines
05 Sep - 14 Sep	Frontier Airlines

Also check the deals for one-way flights from Phoenix 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 Phoenix to Athens in September from $580

Return flights