AirHint found the following cheapest return flights from Sacramento (SMF) to San Juan (SJU) in January 2026 (see full year).
Return flights
| 20 Jan - 03 Feb | Delta | ||
| 09 Jan - 13 Jan | Frontier Airlines | ||
| 14 Jan - 19 Jan | United |
Also check the deals for one-way flights from Sacramento to San Juan in January.
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