There are
766 mi
from Flagstaff, AZ to Susanville, CA
That's the driving distance. It would take 14 hours 44 mins to go from Flagstaff, Arizona to Susanville, California.
The flight distance (direct flight from Flagstaff, AZ to Susanville, CA) is 609.33 mi.
766 mi = 1,232.34 kms