AirHint found the following cheapest return flights from Boston (BOS) to Dublin (DUB) in December 2026 (see full year).
Return flights
| 12 Dec - 31 Dec | Iberia | direct | |
| 16 Dec - 30 Dec | Iberia | ||
| 18 Dec - 02 Jan | Lufthansa |
Also check the deals for one-way flights from Boston to Dublin in December.
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