AirHint found the following cheapest return flights from Phoenix (PHX) to Athens (ATH) in December 2025 (see full year).
Return flights
| 16 Dec - 30 Dec | Hawaiian Airlines | ||
| 22 Dec - 28 Dec | Delta | ||
| 22 Dec - 29 Dec | Frontier Airlines | ||
| 24 Dec - 03 Jan | Air France |
Also check the deals for one-way flights from Phoenix to Athens in December.
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