AirHint found the following cheapest return flights from Phoenix (PHX) to San Juan (SJU) in May 2026 (see full year).
Return flights
| 05 May - 13 May | Southwest Airlines | ||
| 19 May - 24 May | United | ||
| 19 May - 23 May | United | ||
| 25 May - 31 May | Southwest Airlines |
Also check the deals for one-way flights from Phoenix to San Juan in May.
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