AirHint found the following cheapest return flights from Ottawa (YOW) to Vienna (VIE) in October 2025 (see full year).
Return flights
| 30 Oct - 22 Nov | Air Canada | ||
| 31 Oct - 22 Nov | Porter Airlines (Canada) Ltd | ||
| 22 Oct - 29 Oct | Condor | ||
| 30 Oct - 01 Nov | Porter Airlines (Canada) Ltd |
Also check the deals for one-way flights from Ottawa to Vienna in October.
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