There are
643 mi
from Lexington, KY to Fayetteville, AR
That's the driving distance. It would take 12 hours 35 mins to go from Lexington, Kentucky to Fayetteville, Arkansas.
The flight distance (direct flight from Lexington, KY to Fayetteville, AR) is 549.31 mi.
643 mi = 1,035.30 kms