AirHint found the following cheapest one-way flights from Chicago (ORD) to Dublin (DUB) in July 2025 (see full year).

One-Way flights

28 Jul	TAP
27 Jul	TAP
31 Jul	Frontier Airlines
30 Jul	ITA Airways
29 Jul	Spirit Airlines
30 Jul	Iberia	direct
29 Jul	Iberia	direct
28 Jul	Iberia	direct
27 Jul	Iberia	direct
31 Jul	American Airlines	direct

Also check the deals for return flights from Chicago to Dublin in July.

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 one-way flights from Chicago to Dublin in July from 254€

One-Way flights