AirHint found the following cheapest one-way flights from Washington (IAD) to Dublin (DUB) in December 2025 (see full year).
One-Way flights
| 04 Dec | TAP | ||
| 03 Dec | TAP | ||
| 11 Dec | Frontier Airlines | ||
| 28 Dec | Royal Air Maroc | ||
| 03 Dec | Lufthansa | direct | |
| 28 Dec | United | direct | |
| 08 Dec | United | direct | |
| 30 Dec | United | direct | |
| 27 Dec | Air Canada | ||
| 04 Dec | Aer Lingus | direct |
Also check the deals for return flights from Washington to Dublin in December.
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The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.
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