AirHint found the following cheapest one-way flights from Washington (IAD) to Dublin (DUB) in January 2026 (see full year).
One-Way flights
| 30 Jan | Frontier Airlines | ||
| 09 Jan | Icelandair | ||
| 23 Jan | Icelandair | ||
| 11 Jan | TAP | ||
| 04 Jan | TAP | ||
| 03 Jan | SWISS | ||
| 05 Jan | Royal Air Maroc | ||
| 02 Jan | TAP | ||
| 04 Jan | Lufthansa | direct | |
| 11 Jan | Aer Lingus | direct |
Also check the deals for return flights from Washington to Dublin in January.
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