There are
1,404 mi
from Santee, CA to Port Lavaca, TX
That's the driving distance. It would take 1 day to go from Santee, California to Port Lavaca, Texas.
The flight distance (direct flight from Santee, CA to Port Lavaca, TX) is 1,241.09 mi.
1,404 mi = 2,259.35 kms