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

Return flights

27 Apr - 08 May	jetBlue
28 Apr - 06 May	jetBlue
29 Apr - 05 May	jetBlue
18 Apr - 28 Apr	jetBlue
07 Apr - 14 Apr	Air Canada
28 Apr - 05 May	Air Canada
29 Apr - 06 May	Air Canada
24 Apr - 01 May	jetBlue
05 Apr - 12 Apr	Air Canada
06 Apr - 13 Apr	Air Canada
13 Apr - 20 Apr	Air Canada
27 Apr - 04 May	Air Canada
30 Apr - 07 May	Air Canada
10 Apr - 17 Apr	Air Canada
04 Apr - 11 Apr	jetBlue
02 Apr - 12 Apr	Air Canada

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 $477

Return flights