AirHint found the following cheapest one-way flights from Washington (IAD) to Zurich (ZRH) in December 2025 (see full year).
One-Way flights
| 08 Dec | TAP | ||
| 09 Dec | TAP | ||
| 02 Dec | TAP | ||
| 05 Dec | TAP | ||
| 06 Dec | TAP | ||
| 15 Dec | Frontier Airlines | ||
| 28 Dec | TAP | ||
| 09 Dec | SWISS | direct | |
| 28 Dec | SWISS | direct | |
| 02 Dec | SWISS | direct |
Also check the deals for return flights from Washington to Zurich in December.
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