There are
1,278 mi
from Flagstaff, AZ to Harlingen, TX
That's the driving distance. It would take 22 hours 28 mins to go from Flagstaff, Arizona to Harlingen, Texas.
The flight distance (direct flight from Flagstaff, AZ to Harlingen, TX) is 1,034.42 mi.
1,278 mi = 2,056.22 kms