AirHint found the following cheapest return flights from Washington (DCA) to Valencia (VLC) in December 2025 (see full year).
Return flights
| 09 Dec - 16 Dec | Delta | ||
| 11 Dec - 18 Dec | jetBlue | ||
| 13 Dec - 20 Dec | Iberia | ||
| 24 Dec - 28 Dec | British Airways | ||
| 18 Dec - 25 Dec | jetBlue | ||
| 28 Dec - 04 Jan | Delta |
Also check the deals for one-way flights from Washington to Valencia in December.
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