There are
1,929 mi
from Davenport, IA to Seatac, WA
That's the driving distance. It would take 1 day 9 hours to go from Davenport, Iowa to Seatac, Washington.
The flight distance (direct flight from Davenport, IA to Seatac, WA) is 1,605.17 mi.
1,929 mi = 1.61 kms