AirHint found the following cheapest return flights from Denver (DEN) to San Juan (SJU) in June 2026 (see full year).
Return flights
| 01 Jun - 05 Jun | Southwest Airlines | ||
| 03 Jun - 08 Jun | Southwest Airlines | ||
| 07 Jun - 14 Jun | Frontier Airlines |
Also check the deals for one-way flights from Denver to San Juan in June.
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