AirHint found the following cheapest return flights from Chicago (MDW) to Dublin (DUB) in September 2026 (see full year).
Return flights
| 02 Sep - 08 Sep | Delta | ||
| 09 Sep - 20 Sep | Air France | ||
| 04 Sep - 09 Sep | Delta |
Also check the deals for one-way flights from Chicago to Dublin in September.
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