Cheapest one-way flights from Philadelphia to San Juan in October from $140

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

One-Way flights

30 Oct Spirit Airlines
29 Oct Spirit Airlines
27 Oct Spirit Airlines
31 Oct Spirit Airlines
28 Oct Spirit Airlines
28 Oct Frontier Airlines direct
30 Oct Frontier Airlines direct
31 Oct Frontier Airlines direct
29 Oct Frontier Airlines direct
27 Oct Frontier Airlines direct

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

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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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