AirHint found the following cheapest return flights from Austin (AUS) to Athens (ATH) in December 2025 (see full year).
Return flights
| 05 Dec - 08 Dec | Air Canada | ||
| 03 Dec - 10 Dec | Lufthansa | ||
| 22 Dec - 10 Jan | Frontier Airlines | ||
| 18 Dec - 04 Jan | Frontier Airlines | ||
| 22 Dec - 05 Jan | British Airways |
Also check the deals for one-way flights from Austin to Athens in December.
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