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

Return flights

14 Jan - 28 Jan	Scandinavian Airlines
12 Jan - 19 Jan	Icelandair
22 Jan - 29 Jan	Icelandair
11 Jan - 25 Jan	Icelandair
14 Jan - 28 Jan	Aer Lingus	direct
02 Jan - 09 Jan	Icelandair
22 Jan - 29 Jan	Aer Lingus	direct
12 Jan - 19 Jan	Aer Lingus	direct
11 Jan - 25 Jan	Aer Lingus	direct
02 Jan - 09 Jan	Aer Lingus	direct

Also check the deals for one-way flights from Chicago to Dublin in January.

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 Chicago to Dublin in January from 424€

Return flights