There are
1,939 mi
from Oshkosh, WI to Seattle, WA
That's the driving distance. It would take 1 day 9 hours to go from Oshkosh, Wisconsin to Seattle, Washington.
The flight distance (direct flight from Oshkosh, WI to Seattle, WA) is 1,632.61 mi.
1,939 mi = 3,120.85 kms