There are
1,798 mi
from Irvine, CA to Natchez, MS
That's the driving distance. It would take 1 day 7 hours to go from Irvine, California to Natchez, Mississippi.
The flight distance (direct flight from Irvine, CA to Natchez, MS) is 1,538.64 mi.
1,798 mi = 2,893.93 kms