Cheapest one-way flights from Chicago to Dublin in September from 231€

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

One-Way flights

23 Sep Frontier Airlines
12 Sep Frontier Airlines
18 Sep Frontier Airlines
16 Sep Frontier Airlines
17 Sep Porter Airlines (Canada) Ltd
04 Sep Frontier Airlines
24 Sep KLM
02 Sep Air France
01 Sep Air France
29 Sep Air France

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.

Book a cheap hotel in Dublin

Cheap car rent in Dublin

Feel free to contact us with any feedback or request another flight research.