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

Return flights

16 Apr - 23 Apr	Icelandair
17 Apr - 24 Apr	Icelandair
18 Apr - 25 Apr	Icelandair
20 Apr - 27 Apr	Icelandair
21 Apr - 28 Apr	Icelandair
23 Apr - 30 Apr	Icelandair
11 Apr - 18 Apr	Icelandair
13 Apr - 20 Apr	Icelandair
14 Apr - 21 Apr	Icelandair
17 Apr - 25 Apr	Icelandair
24 Apr - 01 May	Icelandair
27 Apr - 23 May	Icelandair
27 Apr - 23 May	United	direct
24 Apr - 01 May	Aer Lingus	direct

Also check the deals for one-way flights from Washington to Dublin in April.

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 April from 313€

Return flights