Cheapest return flights from Washington to San Jose in December from $363

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

Return flights

03 Dec - 07 Dec American Airlines
01 Dec - 05 Dec United
03 Dec - 10 Dec United
04 Dec - 10 Dec jetBlue
29 Dec - 12 Jan United
22 Dec - 01 Jan American Airlines
19 Dec - 31 Dec jetBlue
20 Dec - 28 Dec jetBlue
19 Dec - 27 Dec jetBlue
29 Dec - 02 Jan jetBlue
20 Dec - 01 Jan jetBlue
21 Dec - 03 Jan jetBlue

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

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The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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