There are
1,887 mi
from Irvine, CA to Slidell, LA
That's the driving distance. It would take 1 day 8 hours to go from Irvine, California to Slidell, Louisiana.
The flight distance (direct flight from Irvine, CA to Slidell, LA) is 1,653.49 mi.
1,887 mi = 1.61 kms