There are
1,031 mi
from St Charles, MO to Oviedo, FL
That's the driving distance. It would take 18 hours 58 mins to go from St Charles, Missouri to Oviedo, Florida.
The flight distance (direct flight from St Charles, MO to Oviedo, FL) is 879.02 mi.
1,031 mi = 1,658.65 kms