AirHint found the following cheapest return flights from Warsaw (WAW) to Chicago (ORD) in September 2026 (see full year).
Return flights
| 26 Sep - 08 Oct | SWISS | ||
| 03 Sep - 12 Sep | Lufthansa | ||
| 26 Sep - 08 Oct | LOT | direct |
Also check the deals for one-way flights from Warsaw to Chicago in September.
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