There are
2,788 mi
from Kennewick, WA to Middletown, CT
That's the driving distance. It would take 2 days 1 hour to go from Kennewick, Washington to Middletown, Connecticut.
The flight distance (direct flight from Kennewick, WA to Middletown, CT) is 2,303.48 mi.
2,788 mi = 4,487.05 kms