There are
1,939 mi
from Kennewick, WA to St John, IN
That's the driving distance. It would take 1 day 9 hours to go from Kennewick, Washington to St John, Indiana.
The flight distance (direct flight from Kennewick, WA to St John, IN) is 1,600.78 mi.
1,939 mi = 3,120.85 kms