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

Return flights

28 Jan - 01 Feb	TAP
15 Jan - 18 Jan	TAP
14 Jan - 21 Jan	TAP
15 Jan - 21 Jan	TAP
30 Jan - 09 Feb	Icelandair
22 Jan - 27 Jan	Icelandair
12 Jan - 21 Jan	Icelandair
12 Jan - 19 Jan	Icelandair
28 Jan - 05 Feb	Icelandair
25 Jan - 29 Jan	Icelandair
16 Jan - 19 Jan	Icelandair
24 Jan - 28 Jan	Icelandair
23 Jan - 27 Jan	Icelandair
29 Jan - 05 Feb	Icelandair
21 Jan - 01 Feb	Iberia
28 Jan - 04 Feb	Iberia
08 Jan - 03 Feb	Scandinavian Airlines
25 Jan - 01 Feb	Aer Lingus	direct
26 Jan - 02 Feb	Aer Lingus	direct
27 Jan - 03 Feb	Aer Lingus	direct

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

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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Cheapest return flights from Dublin to Boston in January from 317€

Return flights