Cheapest one-way flights from Phoenix to San Francisco in September from $42

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

One-Way flights

03 Sep Southwest Airlines direct
06 Sep Southwest Airlines direct
09 Sep Southwest Airlines direct
24 Sep Southwest Airlines direct
04 Sep Frontier Airlines direct
11 Sep Frontier Airlines direct
15 Sep Frontier Airlines direct
18 Sep Frontier Airlines direct
22 Sep Frontier Airlines direct
25 Sep Frontier Airlines direct

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

Skyscanner

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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