AirHint found the following cheapest one-way flights from Phoenix (PHX) to San Juan (SJU) in December 2025 (see full year).
One-Way flights
| 06 Dec | Frontier Airlines | ||
| 24 Dec | Frontier Airlines | ||
| 23 Dec | Frontier Airlines | ||
| 25 Dec | Frontier Airlines | ||
| 22 Dec | Southwest Airlines |
Also check the deals for return flights from Phoenix to San Juan 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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