Cheapest one-way flights from San Juan to Philadelphia in January from $105

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

One-Way flights

25 Jan Frontier Airlines direct
24 Jan Frontier Airlines direct
30 Jan Frontier Airlines direct
26 Jan Frontier Airlines direct
27 Jan Spirit Airlines direct
20 Jan Spirit Airlines direct
29 Jan Spirit Airlines
28 Jan Spirit Airlines
14 Jan Spirit Airlines
21 Jan Spirit Airlines

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

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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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