Cheapest one-way flights from Philadelphia to San Juan in January from 55€

AirHint found the following cheapest one-way flights from Philadelphia (PHL) to San Juan (SJU) in January 2026 (see full year).

One-Way flights

24 Jan Spirit Airlines direct
19 Jan Spirit Airlines direct
28 Jan Frontier Airlines direct
25 Jan Spirit Airlines direct
31 Jan Frontier Airlines
29 Jan Frontier Airlines
26 Jan Spirit Airlines
27 Jan Spirit Airlines
21 Jan Spirit Airlines
18 Jan Spirit Airlines direct

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

Powered by

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.

Book a cheap hotel in San Juan

Cheap car rent in San Juan

Feel free to contact us with any feedback or request another flight research.