AirHint found the following cheapest return flights from Glasgow (GLA) to San Juan (SJU) in January 2026 (see full year).
Return flights
| 25 Jan - 08 Feb | Ryanair | ||
| 16 Jan - 23 Jan | easyJet | ||
| 16 Jan - 19 Jan | Ryanair | ||
| 16 Jan - 22 Jan | Aer Lingus |
Also check the deals for one-way flights from Glasgow to San Juan in January.
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