AirHint found the following cheapest return flights from Guadalajara (GDL) to San Juan (SJU) in May 2026 (see full year).
Return flights
| 12 May - 15 May | United | ||
| 12 May - 26 May | Volaris | ||
| 20 May - 27 May | Copa | ||
| 21 May - 25 May | Copa |
Also check the deals for one-way flights from Guadalajara to San Juan in May.
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