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

Return flights

28 Apr - 08 May	TAP
11 Apr - 02 May	TAP
21 Apr - 26 Apr	TAP
20 Apr - 26 Apr	TAP
27 Apr - 23 May	TAP
20 Apr - 24 Apr	Scandinavian Airlines
01 Apr - 08 Apr	Icelandair
06 Apr - 13 Apr	Icelandair
11 Apr - 18 Apr	Icelandair
16 Apr - 23 Apr	Icelandair
21 Apr - 28 Apr	Icelandair
01 Apr - 08 Apr	Aer Lingus	direct
21 Apr - 28 Apr	Aer Lingus	direct
27 Apr - 23 May	Aer Lingus	direct
28 Apr - 08 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 $426

Return flights