Driving Time from Houston to San Antonio
Driving from Houston to San Antonio is about 231 mi and takes roughly 4 hr 8 min. See the fuel-cost estimate, distance and route tips.
Houston and San Antonio are about 190 mi (305 km) apart in a straight line. By road that works out to roughly 231 mi (372 km), a drive of about 4 hr 8 min. A nonstop flight covers the great-circle distance in approximately 51 min.
| Straight-line distance | 190 mi / 305 km |
| Road distance (est.) | 231 mi / 372 km |
| Driving time (est.) | 4 hr 8 min |
| Nonstop flight (est.) | 51 min |
| Driving fuel (est., 1-way) | $29 |
| Typical flight fare | $80–$250 |
| Geographic midpoint | 29.603, -96.931 |
How these estimates work
Straight-line distance uses the haversine formula on each city's coordinates. Road distance applies a circuity factor (~1.2–1.4×) and driving time a blended average speed. Flight time uses typical jet cruise speed plus ~30 minutes for taxi, climb and descent. Treat all figures as planning estimates.
Frequently asked questions
Houston to San Antonio is about 190 mi (305 km) in a straight line, and roughly 231 mi (372 km) by road.