There are
2,048 mi
from Lafayette, IN to Walla Walla, WA
That's the driving distance. It would take 1 day 11 hours to go from Lafayette, Indiana to Walla Walla, Washington.
The flight distance (direct flight from Lafayette, IN to Walla Walla, WA) is 1,619.75 mi.
2,048 mi = 3,295.30 kms