AirHint found the following cheapest one-way flights from Chicago (ORD) to Athens (ATH) in September 2026 (see full year).
One-Way flights
| 16 Sep | Air Serbia | ||
| 14 Sep | Air Serbia | ||
| 05 Sep | Air Serbia | ||
| 30 Sep | Air Serbia | ||
| 15 Sep | Lufthansa | ||
| 24 Sep | TAP | ||
| 25 Sep | TAP | ||
| 03 Sep | TAP | ||
| 04 Sep | TAP | ||
| 22 Sep | Turkish Airlines |
Also check the deals for return flights from Chicago to Athens in September.
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