There are
2,007 mi
from Tinley Park, IL to Downey, CA
That's the driving distance. It would take 1 day 11 hours to go from Tinley Park, Illinois to Downey, California.
The flight distance (direct flight from Tinley Park, IL to Downey, CA) is 1,729.37 mi.
2,007 mi = 3,230.46 kms