Cheapest one-way flights from Chicago to Dublin in September from 183€

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

One-Way flights

30 Sep Spirit Airlines
28 Sep TAP
25 Sep Frontier Airlines
26 Sep Spirit Airlines
22 Sep Frontier Airlines
20 Sep Frontier Airlines
23 Sep Spirit Airlines
15 Sep TAP
18 Sep Frontier Airlines
14 Sep Frontier Airlines

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

Skyscanner

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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