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

Return flights

04 Mar - 09 Mar	jetBlue
04 Mar - 11 Mar	jetBlue
06 Mar - 10 Mar	Air France
05 Mar - 10 Mar	Delta
11 Mar - 18 Mar	Scandinavian Airlines
06 Mar - 13 Mar	jetBlue
11 Mar - 20 Mar	Scandinavian Airlines
11 Mar - 22 Mar	Scandinavian Airlines
06 Mar - 12 Mar	jetBlue
08 Mar - 15 Mar	Air Canada
24 Mar - 01 Apr	Air Canada
30 Mar - 25 Apr	Air Canada
28 Mar - 06 Apr	Air Canada
30 Mar - 06 Apr	Air Canada
26 Mar - 03 Apr	Air Canada
27 Mar - 03 Apr	Air Canada
26 Mar - 18 Apr	Air Canada
27 Mar - 18 Apr	Air Canada
27 Mar - 06 Apr	Air Canada
28 Mar - 04 Apr	Air Canada

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

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 March from $529

Return flights