There are
955 mi
from New Haven, CT to Wauwatosa, WI
That's the driving distance. It would take 18 hours 14 mins to go from New Haven, Connecticut to Wauwatosa, Wisconsin.
The flight distance (direct flight from New Haven, CT to Wauwatosa, WI) is 780.31 mi.
955 mi = 1,537.23 kms