There are
2,659 mi
from Johnson City, TN to Seatac, WA
That's the driving distance. It would take 1 day 23 hours to go from Johnson City, Tennessee to Seatac, Washington.
The flight distance (direct flight from Johnson City, TN to Seatac, WA) is 2,167.06 mi.
2,659 mi = 4,278.86 kms