AirHint found the following cheapest one-way flights from Washington (IAD) to Zurich (ZRH) in May 2026 (see full year).
One-Way flights
| 04 May | Icelandair | ||
| 09 May | Icelandair | ||
| 18 May | TAP | ||
| 10 May | TAP | ||
| 27 May | Icelandair | ||
| 03 May | Turkish Airlines | ||
| 10 May | United | direct | |
| 06 May | British Airways | ||
| 09 May | SWISS | direct | |
| 04 May | SWISS | direct |
Also check the deals for return flights from Washington to Zurich in May.
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