There are
2,146 mi
from Waco, TX to Seatac, WA
That's the driving distance. It would take 1 day 13 hours to go from Waco, Texas to Seatac, Washington.
The flight distance (direct flight from Waco, TX to Seatac, WA) is 1,720.99 mi.
2,146 mi = 3.22 kms