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

Return flights

13 Jan - 07 Feb	Icelandair
20 Jan - 14 Feb	Icelandair
26 Jan - 02 Feb	Icelandair
16 Jan - 23 Jan	Icelandair
07 Jan - 21 Jan	Icelandair
14 Jan - 07 Feb	Icelandair
17 Jan - 07 Feb	Icelandair
22 Jan - 28 Feb	Icelandair
18 Jan - 07 Feb	Icelandair
15 Jan - 22 Jan	Icelandair
18 Jan - 25 Jan	Icelandair
21 Jan - 28 Jan	Icelandair
31 Jan - 07 Feb	Icelandair
13 Jan - 20 Jan	TAP
08 Jan - 31 Jan	Icelandair
07 Jan - 17 Jan	Icelandair
09 Jan - 12 Jan	Icelandair
12 Jan - 19 Jan	Icelandair
28 Jan - 06 Feb	Aer Lingus	direct
04 Jan - 14 Feb	United

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 $394

Return flights