There are
737 mi
from Beaumont, TX to Leavenworth, KS
That's the driving distance. It would take 14 hours 8 mins to go from Beaumont, Texas to Leavenworth, Kansas.
The flight distance (direct flight from Beaumont, TX to Leavenworth, KS) is 639.39 mi.
737 mi = 1,185.57 kms