AirHint found the following cheapest return flights from Phoenix (PHX) to San Jose (SJO) in December 2025 (see full year).
Return flights
| 09 Dec - 16 Dec | American Airlines | ||
| 12 Dec - 22 Dec | American Airlines | ||
| 01 Dec - 16 Dec | Frontier Airlines | ||
| 13 Dec - 23 Dec | United | ||
| 27 Dec - 03 Jan | Frontier Airlines |
Also check the deals for one-way flights from Phoenix to San Jose 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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