AirHint found the following cheapest one-way flights from Chicago (ORD) to Vienna (VIE) in April 2026 (see full year).
One-Way flights
| 19 Apr | Icelandair | ||
| 21 Apr | Icelandair | ||
| 07 Apr | Icelandair | ||
| 22 Apr | Icelandair | ||
| 23 Apr | Frontier Airlines | ||
| 21 Apr | United | direct | |
| 23 Apr | United | direct | |
| 07 Apr | United | direct | |
| 19 Apr | United | direct |
Also check the deals for return flights from Chicago to Vienna in April.
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