AirHint found the following cheapest return flights from Ontario (ONT) to Vienna (VIE) in December 2026 (see full year).
Return flights
| 25 Dec - 03 Jan | British Airways | ||
| 25 Dec - 10 Jan | British Airways | ||
| 24 Dec - 03 Jan | British Airways | ||
| 28 Dec - 10 Jan | British Airways | ||
| 22 Dec - 05 Jan | British Airways | ||
| 19 Dec - 02 Jan | British Airways |
Also check the deals for one-way flights from Ontario to Vienna in December.
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