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

Return flights

15 Mar - 21 Mar	Scandinavian Airlines
14 Mar - 22 Mar	Scandinavian Airlines
13 Mar - 21 Mar	TAP
01 Mar - 10 Mar	Aer Lingus	direct
10 Mar - 24 Mar	Aer Lingus	direct
30 Mar - 09 Apr	Aer Lingus	direct
07 Mar - 13 Mar	Scandinavian Airlines
01 Mar - 08 Mar	Aer Lingus	direct
18 Mar - 23 Mar	Aer Lingus	direct
13 Mar - 27 Mar	Lufthansa
06 Mar - 14 Mar	Aer Lingus	direct
27 Mar - 03 Apr	Aer Lingus	direct
12 Mar - 04 Apr	Air Canada
12 Mar - 04 Apr	Aer Lingus	direct

Also check the deals for one-way flights from Chicago 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 Chicago to Dublin in March from 378€

Return flights