There are
2,755 mi
from Kennewick, WA to Milford, CT
That's the driving distance. It would take 2 days 1 hour to go from Kennewick, Washington to Milford, Connecticut.
The flight distance (direct flight from Kennewick, WA to Milford, CT) is 2,293.37 mi.
2,755 mi = 4,433.52 kms