There are
1,506 mi
from Irvine, CA to Fort Smith, AR
That's the driving distance. It would take 1 day 2 hours to go from Irvine, California to Fort Smith, Arkansas.
The flight distance (direct flight from Irvine, CA to Fort Smith, AR) is 1,333.75 mi.
1,506 mi = 2,423.97 kms