AirHint found the following cheapest one-way flights from Boston (BOS) to San Jose (SJO) in January 2026 (see full year).
One-Way flights
| 26 Jan | Avianca | ||
| 25 Jan | United | ||
| 22 Jan | United | ||
| 24 Jan | United | ||
| 13 Jan | United | ||
| 23 Jan | Spirit Airlines | ||
| 14 Jan | Avianca | ||
| 12 Jan | Spirit Airlines | ||
| 29 Jan | Copa | ||
| 30 Jan | Copa |
Also check the deals for return flights from Boston to San Jose in January.
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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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