Green Bay, WI to San Antonio, TX: 1,350 Miles, 20 hrs Drive / 3.5 hrs Flight

Distance: ~1,350 miles.

• Driving: ~20 hours non-stop (I-43/I-90/I-39/I-80/I-35 corridor).
• Flying: ~3.5 hours direct (GRB–SAT) + airport time.

Add time for stops, traffic, security, delays. Consider breaking the drive into 2–3 days.