AirHint found the following cheapest one-way flights from Boston (BOS) to San Jose (SJO) in May 2026 (see full year).
One-Way flights
| 29 May | Spirit Airlines | ||
| 03 May | Spirit Airlines | ||
| 18 May | Spirit Airlines | ||
| 08 May | Spirit Airlines | ||
| 14 May | Spirit Airlines | ||
| 05 May | United | ||
| 19 May | Spirit Airlines | ||
| 21 May | Spirit Airlines | ||
| 12 May | Copa | ||
| 13 May | Copa |
Also check the deals for return flights from Boston to San Jose in May.
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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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