There are
1,598 mi
from Flagstaff, AZ to Ottawa, IL
That's the driving distance. It would take 1 day 3 hours to go from Flagstaff, Arizona to Ottawa, Illinois.
The flight distance (direct flight from Flagstaff, AZ to Ottawa, IL) is 1,302.78 mi.
1,598 mi = 2,572.47 kms