AirHint found the following cheapest return flights from San Jose (SJO) to San Juan (SJU) in June 2026 (see full year).
Return flights
| 01 Jun - 06 Jun | Avianca | ||
| 11 Jun - 17 Jun | Avianca | ||
| 18 Jun - 23 Jun | Avianca | ||
| 20 Jun - 24 Jun | Frontier Airlines | ||
| 21 Jun - 26 Jun | Avianca | ||
| 19 Jun - 26 Jun | Copa | ||
| 11 Jun - 19 Jun | Copa | ||
| 18 Jun - 22 Jun | Copa |
Also check the deals for one-way flights from San Jose to San Juan in June.
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