Cheapest one-way flights from San Juan to Philadelphia in December from $51

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

One-Way flights

26 Dec Frontier Airlines direct
06 Dec Spirit Airlines
16 Dec Spirit Airlines
04 Dec Frontier Airlines
09 Dec Spirit Airlines
06 Dec Frontier Airlines direct
04 Dec Frontier Airlines direct
15 Dec Frontier Airlines direct
11 Dec Spirit Airlines direct
05 Dec Spirit Airlines direct

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

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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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