AirHint found the following cheapest return flights from Chicago (MDW) to Athens (ATH) in December 2025 (see full year).
Return flights
| 26 Dec - 01 Jan | Delta | ||
| 26 Dec - 31 Jan | Delta | ||
| 27 Dec - 02 Jan | Frontier Airlines | ||
| 29 Dec - 05 Jan | Delta | ||
| 27 Dec - 11 Jan | Delta | ||
| 26 Dec - 03 Jan | Frontier Airlines | ||
| 28 Dec - 03 Jan | Delta |
Also check the deals for one-way flights from Chicago to Athens in December.
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