AirHint found the following cheapest return flights from San Jose (SJO) to San Juan (SJU) in December 2026 (see full year).
Return flights
| 12 Dec - 15 Dec | Copa | ||
| 05 Dec - 12 Dec | Copa | ||
| 22 Dec - 26 Dec | Copa | ||
| 20 Dec - 26 Dec | Copa | ||
| 19 Dec - 26 Dec | Copa | ||
| 23 Dec - 27 Dec | Copa |
Also check the deals for one-way flights from San Jose to San Juan in December.
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