AirHint found the following cheapest return flights from Washington (DCA) to San Jose (SJO) in January 2026 (see full year).
Return flights
| 19 Jan - 26 Jan | United | ||
| 17 Jan - 24 Jan | United | ||
| 17 Jan - 26 Jan | United | ||
| 15 Jan - 18 Jan | United | ||
| 17 Jan - 20 Jan | United | ||
| 23 Jan - 25 Jan | United | ||
| 15 Jan - 19 Jan | United | ||
| 02 Jan - 09 Jan | Southwest Airlines |
Also check the deals for one-way flights from Washington to San Jose in January.
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