AirHint found the following cheapest one-way flights from Chicago (ORD) to Athens (ATH) in September 2026 (see full year).
One-Way flights
| 23 Sep | Air Serbia | ||
| 01 Sep | LOT | ||
| 30 Sep | Turkish Airlines | ||
| 17 Sep | Turkish Airlines | ||
| 30 Sep | Iberia | direct | |
| 23 Sep | United | direct | |
| 01 Sep | British Airways | direct | |
| 17 Sep | British Airways | direct |
Also check the deals for return flights from Chicago to Athens in September.
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