AirHint found the following cheapest return flights from Basel (BSL) to Boston (BOS) in December 2025 (see full year).
Return flights
| 26 Dec - 31 Dec | Lufthansa | ||
| 01 Dec - 14 Dec | Air France | ||
| 26 Dec - 02 Jan | Air France | ||
| 19 Dec - 02 Jan | Ryanair | ||
| 15 Dec - 04 Jan | Turkish Airlines |
Also check the deals for one-way flights from Basel to Boston in December.
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The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.
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