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

Return flights

02 Sep - 09 Sep	Air Canada
03 Sep - 10 Sep	Air Canada
10 Sep - 17 Sep	Air Canada
16 Sep - 23 Sep	Air Canada
09 Sep - 16 Sep	Air Canada
17 Sep - 24 Sep	Air Canada
23 Sep - 30 Sep	Air Canada
01 Sep - 08 Sep	Lufthansa
29 Sep - 06 Oct	British Airways
30 Sep - 07 Oct	British Airways
08 Sep - 15 Sep	British Airways
15 Sep - 22 Sep	British Airways
24 Sep - 01 Oct	Delta
25 Sep - 02 Oct	Virgin Atlantic
28 Sep - 05 Oct	Delta
27 Sep - 04 Oct	Air Canada
26 Sep - 03 Oct	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 428€

Return flights