AirHint found the following cheapest one-way flights from San Juan (SJU) to San Jose (SJO) in December 2025 (see full year).
One-Way flights
| 02 Dec | Spirit Airlines | ||
| 23 Dec | Frontier Airlines | ||
| 16 Dec | Spirit Airlines | ||
| 31 Dec | Spirit Airlines | ||
| 26 Dec | Spirit Airlines | ||
| 01 Dec | Spirit Airlines | ||
| 28 Dec | Spirit Airlines |
Also check the deals for return flights from San Juan 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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