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

Return flights

22 Jul - 29 Jul	American Airlines
21 Jul - 28 Jul	Delta
23 Jul - 30 Jul	American Airlines
24 Jul - 31 Jul	American Airlines
31 Jul - 07 Aug	American Airlines
20 Jul - 27 Jul	Air Canada
14 Jul - 28 Jul	Air Canada
15 Jul - 22 Jul	Delta
18 Jul - 25 Jul	Air Canada
19 Jul - 26 Jul	American Airlines
09 Jul - 17 Jul	Air Canada

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

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 July from 453€

Return flights