How far is San Antonio from Austin?
San Antonio is about 79 miles from Austin by road — a drive of roughly 1 hr 31 min in normal traffic heading south on I-35. The figures below come from live road-network routing between the two downtowns, measured in the direction travelers actually ask about: starting in Austin and ending in San Antonio. Friday afternoons and Fiesta or event weekends in San Antonio can stretch the trip past two hours at peak.
The drive south from Austin to San Antonio
Leave downtown Austin on I-35 S and the metro thins out fast: San Marcos arrives in about 37 min, then New Braunfels, and the Texas hill country flattens into the San Antonio sprawl just past the airport exits. Most of the mileage stacks up in the northern half; once you clear New Braunfels the remaining run into downtown San Antonio is short and predictable.
Distance and drive-time snapshot
Distance: about 79 road miles from downtown Austin to downtown San Antonio. Typical drive time: 1 hours 31 minutes in normal traffic. Add 30–45 minutes for San Antonio rush hours or event weekends, and a few more minutes door-to-door depending on your exact pickup and drop-off addresses.
Drive times from Austin to towns on the corridor
All figures below from the same live road-network routing (distances are road miles from Austin, times are typical driving minutes in normal traffic):
| Town | Distance from Austin | Typical drive |
|---|---|---|
| San Marcos, TX | 31 miles | 37 min |
| New Braunfels, TX | 49 miles | 57 min |
| Seguin, TX | 60 miles | 67 min |
| San Antonio, TX (downtown) | 79 miles | 91 min |
Shuttle from Austin to San Antonio
Texas Shuttle runs private, door-to-door shuttle service on this corridor 24/7 — pickup at any address in Austin, drop-off at any address in San Antonio, flat rate, no surge pricing at any hour.
Based on 23 real completed Texas Shuttle trips on this corridor, a private sedan or SUV has typically run $430-$546 each way (25th–75th percentile; most rides land near $465). Round trips save 10% off each way.
Group travel on this corridor
Shuttle vans seat up to 8 with luggage, so a family or group traveling together pays one flat vehicle price, not per head — often beating per-person rideshare pricing on a corridor this long.