AirHint found the following cheapest return flights from Philadelphia (PHL) to Valencia (VLC) in December 2025 (see full year).
Return flights
| 22 Dec - 19 Jan | Finnair | ||
| 21 Dec - 19 Jan | Finnair | ||
| 21 Dec - 11 Jan | jetBlue | ||
| 19 Dec - 19 Jan | Finnair | ||
| 20 Dec - 19 Jan | Finnair | ||
| 21 Dec - 02 Jan | Frontier Airlines |
Also check the deals for one-way flights from Philadelphia to Valencia in December.
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