AirHint found the following cheapest one-way flights from Frankfurt (FRA) to Boston (BOS) in December 2026 (see full year).
One-Way flights
| 02 Dec | Aer Lingus | ||
| 04 Dec | Aer Lingus | ||
| 03 Dec | Aer Lingus | ||
| 05 Dec | Aer Lingus | ||
| 06 Dec | Aer Lingus | ||
| 07 Dec | Aer Lingus | ||
| 08 Dec | Aer Lingus | ||
| 09 Dec | Aer Lingus | ||
| 10 Dec | Aer Lingus | ||
| 13 Dec | Aer Lingus |
Also check the deals for return flights from Frankfurt to Boston in December.
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