AirHint found the following cheapest return flights from Washington (DCA) to Dublin (DUB) in June 2025 (see full year).

Return flights

30 Jun - 08 Jul	Air Canada
30 Jun - 09 Jul	Air Canada
30 Jun - 31 Jul	jetBlue
23 Jun - 29 Jun	Air Canada
26 Jun - 01 Jul	Delta
28 Jun - 05 Jul	Delta
20 Jun - 23 Jun	Delta
26 Jun - 05 Jul	Delta
15 Jun - 28 Jun	Air Canada
15 Jun - 29 Jun	Air Canada
15 Jun - 21 Jun	Air Canada
17 Jun - 20 Jun	Air Canada
18 Jun - 25 Jun	Air Canada
16 Jun - 26 Jun	Air Canada
19 Jun - 26 Jun	jetBlue
18 Jun - 22 Jun	jetBlue

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

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.

Book a cheap hotel in Dublin

Cheap car rent in Dublin

Cheapest return flights from Washington to Dublin in June from $625

Return flights