There are
2,248 mi
from Flagstaff, AZ to Middletown, DE
That's the driving distance. It would take 1 day 16 hours to go from Flagstaff, Arizona to Middletown, Delaware.
The flight distance (direct flight from Flagstaff, AZ to Middletown, DE) is 1,982.15 mi.
2,248 mi = 3,618.23 kms