There are
2,738 mi
from Kennewick, WA to Danbury, CT
That's the driving distance. It would take 2 days to go from Kennewick, Washington to Danbury, Connecticut.
The flight distance (direct flight from Kennewick, WA to Danbury, CT) is 2,270.25 mi.
2,738 mi = 4,406.87 kms