Cheapest return flights from San Diego to Phoenix in December from $48

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

Return flights

06 Dec - 08 Dec Frontier Airlines direct
06 Dec - 07 Dec Frontier Airlines direct
05 Dec - 08 Dec Frontier Airlines direct
08 Dec - 10 Dec Frontier Airlines direct
04 Dec - 07 Dec Frontier Airlines direct
05 Dec - 07 Dec Frontier Airlines direct
02 Dec - 09 Dec Frontier Airlines direct
26 Dec - 09 Jan Frontier Airlines direct
03 Dec - 07 Dec Frontier Airlines direct
18 Dec - 20 Dec Frontier Airlines direct
07 Dec - 08 Dec Frontier Airlines direct

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

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