Cheapest one-way flights from Phoenix to San Francisco in December from $21

AirHint found the following cheapest one-way flights from Phoenix (PHX) to San Francisco (SFO) in December 2025 (see full year).

One-Way flights

17 Dec Alaska Airlines direct
02 Dec Frontier Airlines
30 Dec Frontier Airlines
31 Dec Frontier Airlines
22 Dec Frontier Airlines
22 Dec Alaska Airlines direct
19 Dec Southwest Airlines direct
26 Dec United direct
01 Dec Frontier Airlines direct
27 Dec Frontier Airlines direct

Also check the deals for return flights from Phoenix to San Francisco 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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