AirHint found the following cheapest one-way flights from Chicago (ORD) to Vienna (VIE) in May 2026 (see full year).
One-Way flights
| 11 May | SWISS | ||
| 12 May | Icelandair | ||
| 02 May | Icelandair | ||
| 01 May | Icelandair | ||
| 20 May | Spirit Airlines | ||
| 30 May | Spirit Airlines | ||
| 10 May | LOT | ||
| 21 May | Spirit Airlines | ||
| 17 May | Turkish Airlines | ||
| 27 May | Aer Lingus |
Also check the deals for return flights from Chicago to Vienna in May.
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