Cheapest return flights from Boston to Dublin in December from $379

Best time to book flights for Boston (BOS) to Dublin (DUB) flights at AirHint

AirHint found the following cheapest return flights from Boston (BOS) to Dublin (DUB) in December 2025 (see full year).

Return flights

01 Dec - 08 Dec Icelandair
20 Dec - 02 Jan Fly Play
01 Dec - 08 Dec Aer Lingus direct
11 Dec - 18 Dec United
31 Dec - 07 Jan United
26 Dec - 30 Dec British Airways
11 Dec - 18 Dec Aer Lingus direct
21 Dec - 28 Dec Icelandair
26 Dec - 30 Dec Aer Lingus direct
31 Dec - 07 Jan Aer Lingus direct
20 Dec - 02 Jan Delta direct
21 Dec - 28 Dec Aer Lingus direct

Also check the deals for one-way flights from Boston to Dublin in December.

Skyscanner

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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