Cheapest return flights from Washington to Valencia in December from $511

AirHint found the following cheapest return flights from Washington (IAD) to Valencia (VLC) in December 2025 (see full year).

Return flights

05 Dec - 15 Dec SWISS
09 Dec - 16 Dec British Airways
02 Dec - 09 Dec Air Canada
01 Dec - 08 Dec Air Canada
02 Dec - 12 Dec Delta
12 Dec - 19 Dec Aer Lingus
21 Dec - 09 Jan Frontier Airlines
19 Dec - 09 Jan Frontier Airlines
21 Dec - 08 Jan TAP
20 Dec - 08 Jan TAP
19 Dec - 08 Jan Delta

Also check the deals for one-way flights from Washington to Valencia in December.

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