Cheapest one-way flights from Chicago to Dublin in September from 188€

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

One-Way flights

29 Sep Spirit Airlines
10 Sep Spirit Airlines
18 Sep Spirit Airlines
04 Sep Spirit Airlines
21 Sep Air Canada
28 Sep TAP
26 Sep Spirit Airlines
11 Sep Spirit Airlines
02 Sep Spirit Airlines
12 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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