AirHint found the following cheapest return flights from Phoenix (PHX) to San Juan (SJU) in September 2026 (see full year).
Return flights
| 02 Sep - 08 Sep | Southwest Airlines | ||
| 05 Sep - 08 Sep | Southwest Airlines | ||
| 03 Sep - 08 Sep | Southwest Airlines | ||
| 19 Sep - 22 Sep | United | ||
| 04 Sep - 07 Sep | Southwest Airlines |
Also check the deals for one-way flights from Phoenix to San Juan in September.
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