Cheapest return flights from Phoenix to San Diego in December from 66€

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

Return flights

31 Dec - 01 Jan Frontier Airlines direct
31 Dec - 03 Jan Frontier Airlines direct
30 Dec - 04 Jan Frontier Airlines direct
27 Dec - 31 Dec Frontier Airlines direct
30 Dec - 05 Jan Frontier Airlines direct
27 Dec - 06 Jan Frontier Airlines direct
26 Dec - 02 Jan Frontier Airlines direct
25 Dec - 27 Dec Frontier Airlines direct
26 Dec - 29 Dec Frontier Airlines direct
29 Dec - 05 Jan Frontier Airlines direct
28 Dec - 28 Dec Frontier Airlines direct
26 Dec - 26 Dec Frontier Airlines
26 Dec - 26 Dec Frontier Airlines direct

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

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