There are
171 mi
from Omaha, NE to Leavenworth, KS
That's the driving distance. It would take 3 hours 16 mins to go from Omaha, Nebraska to Leavenworth, Kansas.
The flight distance (direct flight from Omaha, NE to Leavenworth, KS) is 145.62 mi.
171 mi = 275.25 kms