There are
2,891 mi
from Ukiah, CA to Wilmington, DE
That's the driving distance. It would take 2 days 3 hours to go from Ukiah, California to Wilmington, Delaware.
The flight distance (direct flight from Ukiah, CA to Wilmington, DE) is 2,512.48 mi.
2,891 mi = 4,651.93 kms