AirHint found the following cheapest one-way flights from Washington (DCA) to Dublin (DUB) in December 2025 (see full year).
One-Way flights
| 13 Dec | Virgin Atlantic | ||
| 14 Dec | jetBlue | ||
| 15 Dec | Air Canada | ||
| 24 Dec | United | ||
| 16 Dec | jetBlue | ||
| 22 Dec | United | ||
| 21 Dec | United | ||
| 23 Dec | Air France | ||
| 12 Dec | Air France | ||
| 18 Dec | United |
Also check the deals for return flights from Washington to Dublin in December.
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