There are
1,154 mi
from Flagstaff, AZ to Rosenberg, TX
That's the driving distance. It would take 20 hours 36 mins to go from Flagstaff, Arizona to Rosenberg, Texas.
The flight distance (direct flight from Flagstaff, AZ to Rosenberg, TX) is 1,001.12 mi.
1,154 mi = 1,856.52 kms