Cheapest return flights from Phoenix to San Antonio in December from $40

AirHint found the following cheapest return flights from Phoenix (PHX) to San Antonio (SAT) in December 2025 (see full year).

Return flights

25 Dec - 30 Dec Frontier Airlines direct
25 Dec - 01 Jan Frontier Airlines direct
15 Dec - 28 Dec Frontier Airlines direct
15 Dec - 05 Jan Frontier Airlines
21 Dec - 28 Dec Frontier Airlines
22 Dec - 29 Dec Frontier Airlines
21 Dec - 28 Dec Frontier Airlines direct
18 Dec - 26 Dec Frontier Airlines
07 Dec - 07 Dec Frontier Airlines
15 Dec - 05 Jan American Airlines direct
22 Dec - 27 Dec Frontier Airlines
22 Dec - 29 Dec Southwest Airlines direct
03 Dec - 07 Dec American Airlines direct

Also check the deals for one-way flights from Phoenix to San Antonio in December.

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