Cheapest return flights from Washington to Dublin in May from $598

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

Return flights

13 May - 27 May TAP
17 May - 31 May TAP
01 May - 31 May TAP
13 May - 27 May Aer Lingus direct
23 May - 05 Jun Air Canada
17 May - 31 May United direct
01 May - 31 May United direct
23 May - 05 Jun United direct

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

Skyscanner

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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