AirHint found the following cheapest one-way flights from Washington (DCA) to San Jose (SJO) in January 2026 (see full year).
One-Way flights
| 28 Jan | United | ||
| 20 Jan | United | ||
| 24 Jan | United | ||
| 23 Jan | United | ||
| 18 Jan | American Airlines | ||
| 19 Jan | American Airlines | ||
| 27 Jan | United | ||
| 25 Jan | United | ||
| 22 Jan | Delta | ||
| 17 Jan | Delta |
Also check the deals for return flights from Washington to San Jose in January.
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