There are
1,588 mi
from Rockford, IL to Flagstaff, AZ
That's the driving distance. It would take 1 day 4 hours to go from Rockford, Illinois to Flagstaff, Arizona.
The flight distance (direct flight from Rockford, IL to Flagstaff, AZ) is 1,304.60 mi.
1,588 mi = 1.61 kms