AirHint found the following cheapest return flights from Chicago (MDW) to Athens (ATH) in September 2026 (see full year).
Return flights
| 08 Sep - 19 Sep | Delta | ||
| 02 Sep - 19 Sep | Delta | ||
| 11 Sep - 27 Sep | Delta | ||
| 09 Sep - 16 Sep | Virgin Atlantic |
Also check the deals for one-way flights from Chicago to Athens in September.
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