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

Return flights

24 Apr - 01 May	TAP
26 Apr - 03 May	TAP
25 Apr - 02 May	TAP
09 Apr - 16 Apr	TAP
30 Apr - 05 May	TAP
02 Apr - 09 Apr	Icelandair
04 Apr - 11 Apr	Icelandair
06 Apr - 13 Apr	Icelandair
07 Apr - 14 Apr	Icelandair
08 Apr - 15 Apr	TAP
01 Apr - 08 Apr	Icelandair
03 Apr - 10 Apr	Icelandair
05 Apr - 12 Apr	Icelandair
10 Apr - 17 Apr	Icelandair
14 Apr - 09 May	Icelandair
06 Apr - 02 May	Icelandair
14 Apr - 09 May	United	direct
29 Apr - 06 May	Aer Lingus	direct
26 Apr - 03 May	Aer Lingus	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 375€

Return flights