There are
283 mi
from Olathe, KS to Swansea, IL
That's the driving distance. It would take 5 hours 33 mins to go from Olathe, Kansas to Swansea, Illinois.
The flight distance (direct flight from Olathe, KS to Swansea, IL) is 261.50 mi.
283 mi = 454.77 kms