AirHint found the following cheapest return flights from Houston (HOU) to Zurich (ZRH) in December 2025 (see full year).
Return flights
| 09 Dec - 11 Dec | American Airlines | ||
| 15 Dec - 10 Jan | United | ||
| 05 Dec - 27 Dec | Air Canada | ||
| 23 Dec - 29 Dec | Air Canada | ||
| 26 Dec - 01 Jan | SWISS | ||
| 24 Dec - 03 Jan | Lufthansa |
Also check the deals for one-way flights from Houston to Zurich in December.
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