There are
1,417 mi
from Irvine, CA to Duncanville, TX
That's the driving distance. It would take 1 day to go from Irvine, California to Duncanville, Texas.
The flight distance (direct flight from Irvine, CA to Duncanville, TX) is 1,208.05 mi.
1,417 mi = 1.61 kms