AirHint found the following cheapest one-way flights from Chicago (ORD) to Dublin (DUB) in October 2026 (see full year).
One-Way flights
| 14 Oct | Icelandair | ||
| 12 Oct | KLM | ||
| 15 Oct | Lufthansa | ||
| 22 Oct | Icelandair | ||
| 14 Oct | Aer Lingus | direct | |
| 15 Oct | Aer Lingus | direct | |
| 22 Oct | Aer Lingus | direct | |
| 12 Oct | United | direct |
Also check the deals for return flights from Chicago to Dublin in October.
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