AirHint found the following cheapest return flights from Phoenix (PHX) to San Antonio (SAT) in January 2026 (see full year).
Return flights
| 16 Jan - 19 Jan | Frontier Airlines | direct | |
| 15 Jan - 19 Jan | Frontier Airlines | ||
| 15 Jan - 19 Jan | American Airlines | direct |
Also check the deals for one-way flights from Phoenix to San Antonio in January.
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