There are
2,086 mi
from Seattle, WA to Merrillville, IN
That's the driving distance. It would take 1 day 12 hours to go from Seattle, Washington to Merrillville, Indiana.
The flight distance (direct flight from Seattle, WA to Merrillville, IN) is 1,758.50 mi.
2,086 mi = 3.22 kms