AirHint found the following cheapest one-way flights from Chicago (ORD) to Athens (ATH) in September 2026 (see full year).
One-Way flights
| 06 Sep | Lufthansa | ||
| 21 Sep | Air Serbia | ||
| 30 Sep | Air Serbia | ||
| 19 Sep | Air Serbia | ||
| 12 Sep | Air Serbia | ||
| 16 Sep | Air Serbia | ||
| 11 Sep | TAP | ||
| 25 Sep | TAP | ||
| 20 Sep | Lufthansa | ||
| 28 Sep | Turkish Airlines |
Also check the deals for return flights from Chicago to Athens in September.
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