There are 323.13 miles from Phoenix to Ontario in west direction and 337 miles (542.35 kilometers) by car, following the I-10 W route.
Phoenix and Ontario are 4 hours 56 mins far apart, if you drive non-stop .
This is the fastest route from Phoenix, AZ to Ontario, CA. The halfway point is Ripley, CA.
Phoenix, AZ and Ontario, CA are in the same time zone (MST). Current time in both locations is 2:10 pm.
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