AirHint found the following cheapest return flights from Cork (ORK) to Boston (BOS) in December 2025 (see full year).
Return flights
| 04 Dec - 08 Dec | KLM | ||
| 01 Dec - 03 Dec | Ryanair | ||
| 01 Dec - 04 Dec | Ryanair |
Also check the deals for one-way flights from Cork to Boston in December.
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