There are
1,894 mi
from Napa, CA to Port Lavaca, TX
That's the driving distance. It would take 1 day 9 hours to go from Napa, California to Port Lavaca, Texas.
The flight distance (direct flight from Napa, CA to Port Lavaca, TX) is 1,617.04 mi.
1,894 mi = 1.61 kms