Cheapest one-way flights from Philadelphia to San Juan in May from $87

Best time to book flights for Philadelphia (PHL) to San Juan (SJU) flights at AirHint

AirHint found the following cheapest one-way flights from Philadelphia (PHL) to San Juan (SJU) in May 2025 (see full year).

One-Way flights

20 May Spirit Airlines direct
07 May Spirit Airlines direct
21 May Spirit Airlines direct
03 May Spirit Airlines direct
16 May Spirit Airlines
16 May Spirit Airlines direct
30 May American Airlines direct
26 May Frontier Airlines direct
24 May Frontier Airlines direct

Also check the deals for return flights from Philadelphia to San Juan in May.

Skyscanner

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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