There are
1,661 mi
from St George, UT to Thibodaux, LA
That's the driving distance. It would take 1 day 6 hours to go from St George, Utah to Thibodaux, Louisiana.
The flight distance (direct flight from St George, UT to Thibodaux, LA) is 1,401.10 mi.
1,661 mi = 1.61 kms