There are
2,069 mi
from Seattle, WA to Chesterfield, MO
That's the driving distance. It would take 1 day 12 hours to go from Seattle, Washington to Chesterfield, Missouri.
The flight distance (direct flight from Seattle, WA to Chesterfield, MO) is 1,701.59 mi.
2,069 mi = 3.22 kms