AirHint found the following cheapest return flights from Zurich (ZRH) to Boston (BOS) in December 2026 (see full year).
Return flights
| 21 Dec - 04 Jan | United | ||
| 20 Dec - 02 Jan | United | ||
| 21 Dec - 04 Jan | SWISS | direct | |
| 20 Dec - 02 Jan | SWISS | direct |
Also check the deals for one-way flights from Zurich to Boston in December.
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