AirHint found the following cheapest return flights from Denver (DEN) to San Juan (SJU) in May 2026 (see full year).
Return flights
| 13 May - 17 May | Southwest Airlines | ||
| 01 May - 05 May | Southwest Airlines | ||
| 01 May - 05 May | United | direct |
Also check the deals for one-way flights from Denver to San Juan in May.
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