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

Return flights

28 Mar - 07 Apr	Air Canada
27 Mar - 31 Mar	Air Canada
18 Mar - 27 Mar	British Airways
11 Mar - 20 Mar	British Airways
01 Mar - 08 Mar	Icelandair
05 Mar - 11 Mar	Icelandair
31 Mar - 05 Apr	Delta
07 Mar - 14 Mar	Air Canada
19 Mar - 29 Mar	Air Canada
13 Mar - 18 Mar	British Airways
06 Mar - 13 Mar	British Airways
13 Mar - 19 Mar	British Airways
26 Mar - 04 Apr	Air Canada
27 Mar - 06 Apr	British Airways
27 Mar - 05 Apr	British Airways
26 Mar - 05 Apr	British Airways

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.

Book a cheap hotel in Dublin

Cheap car rent in Dublin

Cheapest return flights from Washington to Dublin in March from $595

Return flights