There are
1,577 mi
from Kennewick, WA to Newton, KS
That's the driving distance. It would take 1 day 2 hours to go from Kennewick, Washington to Newton, Kansas.
The flight distance (direct flight from Kennewick, WA to Newton, KS) is 1,245.42 mi.
1,577 mi = 2,537.49 kms