AirHint found the following cheapest one-way flights from Dublin (DUB) to Philadelphia (PHL) in December 2025 (see full year).
One-Way flights
| 05 Dec | Ryanair | ||
| 11 Dec | Ryanair | ||
| 26 Dec | Finnair | direct | |
| 17 Dec | Ryanair | ||
| 28 Dec | Finnair | direct | |
| 18 Dec | Aer Lingus | direct | |
| 17 Dec | Aer Lingus | direct | |
| 05 Dec | Aer Lingus | direct |
Also check the deals for return flights from Dublin to Philadelphia in December.
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