Cheapest return flights from Washington to San Jose in December from 380€

AirHint found the following cheapest return flights from Washington (DCA) to San Jose (SJO) in December 2025 (see full year).

Return flights

26 Dec - 30 Dec United
29 Dec - 10 Jan Air Canada
27 Dec - 29 Dec United
31 Dec - 05 Jan United
30 Dec - 05 Jan United
29 Dec - 07 Jan Air Canada
28 Dec - 02 Jan United
28 Dec - 04 Jan Delta
30 Dec - 04 Jan Delta
29 Dec - 04 Jan Delta
30 Dec - 03 Jan United
29 Dec - 03 Jan Southwest Airlines
27 Dec - 31 Dec jetBlue

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

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