Cheapest return flights from Washington to San Jose in December from 254€

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

Return flights

07 Dec - 11 Dec United
05 Dec - 15 Dec United
04 Dec - 09 Dec United
02 Dec - 06 Dec United
12 Dec - 17 Dec Southwest Airlines
13 Dec - 18 Dec Southwest Airlines
01 Dec - 08 Dec Delta
03 Dec - 07 Dec Southwest Airlines
25 Dec - 09 Jan jetBlue
28 Dec - 28 Dec United
23 Dec - 29 Dec Southwest Airlines
24 Dec - 01 Jan United
22 Dec - 02 Jan United

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

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