AirHint found the following cheapest return flights from Warsaw (WMI) to Boston (BOS) in December 2025 (see full year).
Return flights
| 10 Dec - 13 Dec | Ryanair | ||
| 03 Dec - 08 Dec | Ryanair | ||
| 23 Dec - 30 Dec | Ryanair | ||
| 19 Dec - 05 Jan | Ryanair | ||
| 26 Dec - 05 Jan | Ryanair | ||
| 13 Dec - 02 Jan | Ryanair |
Also check the deals for one-way flights from Warsaw to Boston in December.
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