Cheapest return flights from Boston to Dublin in January from $337

AirHint found the following cheapest return flights from Boston (BOS) to Dublin (DUB) in January 2026 (see full year).

Return flights

17 Jan - 24 Jan SWISS
21 Jan - 28 Jan Aer Lingus direct
21 Jan - 26 Jan Air Canada
11 Jan - 18 Jan United
31 Jan - 07 Feb United
11 Jan - 18 Jan Aer Lingus direct
01 Jan - 08 Jan United
21 Jan - 26 Jan Aer Lingus direct
31 Jan - 07 Feb Aer Lingus direct
17 Jan - 24 Jan Aer Lingus direct
01 Jan - 08 Jan Aer Lingus direct

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

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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