AirHint found the following cheapest return flights from Guadalajara (GDL) to San Juan (SJU) in January 2026 (see full year).
Return flights
| 14 Jan - 20 Jan | Copa | ||
| 16 Jan - 18 Jan | Copa | ||
| 06 Jan - 10 Jan | Aeromexico |
Also check the deals for one-way flights from Guadalajara to San Juan in January.
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