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

Return flights

22 Jan - 25 Jan	TAP
21 Jan - 25 Jan	TAP
29 Jan - 03 Feb	TAP
27 Jan - 01 Feb	Scandinavian Airlines
25 Jan - 01 Feb	Scandinavian Airlines
23 Jan - 10 Feb	Scandinavian Airlines
26 Jan - 02 Feb	Scandinavian Airlines
21 Jan - 28 Jan	TAP
13 Jan - 21 Jan	Icelandair
07 Jan - 21 Jan	Icelandair
27 Jan - 03 Feb	Icelandair
29 Jan - 05 Feb	Icelandair
31 Jan - 07 Feb	Icelandair
06 Jan - 22 Jan	Icelandair
06 Jan - 21 Jan	Icelandair
19 Jan - 26 Jan	Icelandair
23 Jan - 30 Jan	Icelandair
08 Jan - 12 Jan	Icelandair
26 Jan - 02 Feb	Aer Lingus	direct
25 Jan - 01 Feb	Aer Lingus	direct

Also check the deals for one-way flights from Washington to Dublin 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 Washington to Dublin in January from $432

Return flights