Cheapest return flights from Philadelphia to San Juan in December from $576

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

Return flights

18 Dec - 07 Jan American Airlines direct
19 Dec - 23 Dec jetBlue
23 Dec - 30 Dec American Airlines
25 Dec - 30 Dec American Airlines
26 Dec - 30 Dec jetBlue
25 Dec - 02 Jan Southwest Airlines
23 Dec - 30 Dec American Airlines direct
20 Dec - 28 Dec jetBlue
19 Dec - 28 Dec Southwest Airlines
19 Dec - 28 Dec American Airlines direct

Also check the deals for one-way flights from Philadelphia to San Juan in December.

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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