AirHint found the following cheapest one-way flights from Boston (BOS) to Copenhagen (CPH) in December 2025 (see full year).
One-Way flights
| 28 Dec | Lufthansa | ||
| 21 Dec | Icelandair | ||
| 19 Dec | Icelandair | ||
| 19 Dec | Air France | direct | |
| 21 Dec | Scandinavian Airlines | direct |
Also check the deals for return flights from Boston to Copenhagen in December.
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