AirHint found the following cheapest one-way flights from Washington (IAD) to Dublin (DUB) in October 2025 (see full year).
One-Way flights
| 24 Oct | TAP | ||
| 23 Oct | TAP | ||
| 25 Oct | TAP | ||
| 24 Oct | Aer Lingus | direct | |
| 23 Oct | Aer Lingus | direct | |
| 28 Oct | United | ||
| 29 Oct | United | direct | |
| 28 Oct | Aer Lingus | direct | |
| 30 Oct | Icelandair | ||
| 31 Oct | Aer Lingus | direct |
Also check the deals for return flights from Washington to Dublin in October.
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