AirHint found the following cheapest one-way flights from Washington (IAD) to Dublin (DUB) in April 2026 (see full year).
One-Way flights
| 06 Apr | Icelandair | ||
| 08 Apr | Icelandair | ||
| 18 Apr | Icelandair | ||
| 21 Apr | TAP | ||
| 21 Apr | Aer Lingus | direct | |
| 06 Apr | Aer Lingus | direct | |
| 18 Apr | Aer Lingus | direct | |
| 08 Apr | Lufthansa | direct |
Also check the deals for return flights from Washington to Dublin in April.
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