AirHint found the following cheapest return flights from Bilbao (BIO) to Vienna (VIE) in December 2026 (see full year).
Return flights
| 28 Dec - 02 Jan | TAP | ||
| 26 Dec - 30 Dec | KLM | ||
| 23 Dec - 26 Dec | KLM | ||
| 28 Dec - 03 Jan | TAP | ||
| 18 Dec - 22 Dec | Wizz Air Malta |
Also check the deals for one-way flights from Bilbao to Vienna in December.
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