There are
1,502 mi
from Tempe, AZ to Seatac, WA
That's the driving distance. It would take 1 day 3 hours to go from Tempe, Arizona to Seatac, Washington.
The flight distance (direct flight from Tempe, AZ to Seatac, WA) is 1,110.15 mi.
1,502 mi = 1.61 kms