Cheapest one-way flights from Chicago to Dublin in September from 223€

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

One-Way flights

29 Sep Porter Airlines (Canada) Ltd
23 Sep Frontier Airlines
22 Sep Frontier Airlines
30 Sep Porter Airlines (Canada) Ltd
16 Sep Frontier Airlines
19 Sep Frontier Airlines
12 Sep Frontier Airlines
09 Sep Frontier Airlines
08 Sep Frontier Airlines
17 Sep KLM

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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