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

Return flights

12 Jan - 25 Jan	Icelandair
12 Jan - 26 Jan	Icelandair
12 Jan - 27 Jan	Icelandair
17 Jan - 07 Feb	Icelandair
07 Jan - 31 Jan	Icelandair
22 Jan - 25 Jan	Icelandair
18 Jan - 23 Jan	Icelandair
07 Jan - 23 Jan	Icelandair
18 Jan - 25 Jan	Icelandair
19 Jan - 25 Jan	Icelandair
19 Jan - 26 Jan	Icelandair
19 Jan - 14 Feb	Icelandair
31 Jan - 21 Feb	Icelandair
21 Jan - 14 Feb	Icelandair
29 Jan - 21 Feb	Icelandair
30 Jan - 06 Feb	Icelandair
15 Jan - 07 Feb	Scandinavian Airlines
11 Jan - 08 Feb	Aer Lingus	direct
30 Jan - 06 Feb	Aer Lingus	direct
19 Jan - 14 Feb	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 $349

Return flights