There are
427 mi
from Flagstaff, AZ to Rancho Cucamonga, CA
That's the driving distance. It would take 7 hours 30 mins to go from Flagstaff, Arizona to Rancho Cucamonga, California.
The flight distance (direct flight from Flagstaff, AZ to Rancho Cucamonga, CA) is 346.70 mi.
427 mi = 687.53 kms