There are
2,015 mi
from Downey, CA to Schaumburg, IL
That's the driving distance. It would take 1 day 11 hours to go from Downey, California to Schaumburg, Illinois.
The flight distance (direct flight from Downey, CA to Schaumburg, IL) is 1,718.80 mi.
2,015 mi = 3.22 kms