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

Return flights

03 Mar - 10 Mar	Iberia	direct
18 Mar - 27 Mar	Aer Lingus	direct
03 Mar - 11 Mar	Aer Lingus	direct
03 Mar - 24 Mar	Aer Lingus	direct
21 Mar - 26 Mar	Icelandair
11 Mar - 19 Mar	Iberia	direct
07 Mar - 13 Mar	Aer Lingus	direct
16 Mar - 23 Mar	Aer Lingus	direct
17 Mar - 23 Mar	Aer Lingus	direct
06 Mar - 11 Mar	Aer Lingus	direct
26 Mar - 03 Apr	United
26 Mar - 04 Apr	Frontier Airlines
27 Mar - 03 Apr	United	direct
26 Mar - 03 Apr	Aer Lingus	direct
27 Mar - 06 Apr	United	direct

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 334€

Return flights