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

09 Sep Porter Airlines (Canada) Ltd
11 Sep Porter Airlines (Canada) Ltd
20 Sep Porter Airlines (Canada) Ltd
10 Sep WestJet
04 Sep Porter Airlines (Canada) Ltd
07 Sep Porter Airlines (Canada) Ltd
03 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.

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