Cheapest return flights from Chicago to Dublin in September from $725

Best time to book flights for Chicago (MDW) to Dublin (DUB) flights at AirHint

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

Return flights

17 Sep - 30 Sep Delta
04 Sep - 14 Sep Delta
09 Sep - 21 Sep Delta
05 Sep - 14 Sep Delta
30 Sep - 06 Oct Delta
26 Sep - 06 Oct Delta
25 Sep - 30 Sep Delta
16 Sep - 19 Sep Porter Airlines (Canada) Ltd
22 Sep - 26 Sep Delta

Also check the deals for one-way 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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