There are
2,380 mi
from Spokane, WA to Slidell, LA
That's the driving distance. It would take 1 day 17 hours to go from Spokane, Washington to Slidell, Louisiana.
The flight distance (direct flight from Spokane, WA to Slidell, LA) is 1,892.24 mi.
2,380 mi = 3.22 kms