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

Return flights

05 Mar - 09 Mar	TAP
08 Mar - 16 Mar	TAP
15 Mar - 23 Mar	TAP
05 Mar - 11 Mar	TAP
05 Mar - 17 Mar	TAP
19 Mar - 27 Mar	TAP
16 Mar - 23 Mar	TAP
08 Mar - 15 Mar	TAP
23 Mar - 29 Mar	Scandinavian Airlines
20 Mar - 28 Mar	Icelandair
26 Mar - 07 Apr	Air Canada
29 Mar - 05 Apr	Scandinavian Airlines
31 Mar - 07 Apr	Aer Lingus	direct
28 Mar - 05 Apr	Air Canada
25 Mar - 05 Apr	Turkish Airlines
28 Mar - 04 Apr	Air Canada
26 Mar - 03 Apr	Aer Lingus	direct
26 Mar - 02 Apr	Aer Lingus	direct
27 Mar - 03 Apr	Air Canada
27 Mar - 02 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 414€

Return flights