AirHint found the following cheapest return flights from Philadelphia (PHL) to San Juan (SJU) in May 2026 (see full year).
Return flights
| 13 May - 20 May | jetBlue | ||
| 13 May - 20 May | American Airlines | direct | |
| 08 May - 15 May | American Airlines | direct | |
| 25 May - 29 May | American Airlines | direct | |
| 14 May - 17 May | American Airlines | direct |
Also check the deals for one-way flights from Philadelphia to San Juan in May.
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