Airfare Deals American Airlines American Airlines AAdvantage Phoenix PHX San Francisco SFO United Airlines United Mileage Plus

American and United $43 San Francisco to Phoenix each way

American and United are competing with low fares from Southwest and Frontier Airlines with fares down to $43.10 each way between San Francisco and Phoenix.

United has fares at $43.10 and $48.10 from September 1 through December 9, mostly Tuesday, Wednesday. and Saturday flights.

American Airlines has fewer dates with the last $43.10 fare on October 14 for PHX-SFO and last date for SFO-PHX on November 3.

These are nonstop flights.

American Airlines San Francisco SFO – Phoenix PHX

$43.10  one-way September 15

SFO-PHX $43.10 AA Sep15

United Airlines Phoenix PHX – San Francisco SFO

$86.20  round trip Saturday September 1 – Wednesday September 16

PHX-SFO $86.20 UA

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