How far is Austin, TX from South Houston, TX?
The driving distance from Austin, TX to South Houston, TX is about 173.9 miles (279.8 km), with a travel time of about 03h 13m by car.
- The straight-line flight distance is about 155.8 miles (250.7 km).
- For a round trip, plan for roughly 06h 27m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 8:00 AM CDT.
Reverse, save, or send this route
This drive is better planned with a longer stop or an overnight stay. Copy the route link, send it to another device, or print a clean version before you head out.
This drive is better planned with a longer stop or an overnight stay.
Flight Distance
Driving Distance
Gas Cost Calculator
Leave and Arrive Planner
Pick a departure time to see your estimated arrival and same-day return window.
Drive time stays fixed at 03h 13m.
An early departure helps you fit a real stop into the day without turning the return into a late-night drive.
You are leaving earlier than the recommended window, which gives you extra margin for breaks and traffic.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
City in Colorado County, Texas, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Slight Chance Rain Showers then Mostly Cloudy
Chance Rain Showers then Mostly Cloudy
Driving Route Map
The map below follows the saved road route between Austin and South Houston.
Turn-by-Turn Driving Directions
Step-by-step road directions between Austin and South Houston.
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1
Start on East 5th Street
1836 ft · 52 sec · East 5th Street
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2
Turn left onto Red River Street
711 ft · 20 sec · Red River Street
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3
Turn right onto East 7th Street
3 mi · 5 min · East 7th Street
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4
Turn straight onto Airport Boulevard
1279 ft · 20 sec · Airport Boulevard
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5
Continue on Ed Bluestein Boulevard
552 ft · 9 sec · Ed Bluestein Boulevard
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6
Take the ramp straight toward 183 Toll South: Lockhart
705 ft · 17 sec
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7
Merge slight left onto Bergstrom Expressway
1.3 km · 47 sec · Bergstrom Expressway
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8
Continue on Bastrop Highway
2119 ft · 26 sec · Bastrop Highway
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9
Take the exit slight left toward TX 71 East: Austin-Bergstrom International Airport
2541 ft · 1 min
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10
Continue on East State Highway 71
2.2 mi · 3 min · East State Highway 71
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11
Turn straight onto Bastrop Freeway
1.9 mi · 2 min · Bastrop Freeway
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12
Continue on East State Highway 71
2388 ft · 29 sec · East State Highway 71
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13
Continue on Texas State Highway 71
151 mi · 2 hr 43 min · Texas State Highway 71
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14
Take the exit slight left toward I 45 South: Galveston
819 ft · 20 sec
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15
Merge slight left onto Gulf Freeway
10.1 mi · 12 min · Gulf Freeway
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16
Take the exit slight right toward TX 3: Monroe Road
737 ft · 18 sec
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17
Turn straight onto Gulf Freeway Frontage Road
1530 ft · 31 sec · Gulf Freeway Frontage Road
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18
Turn left onto Monroe Road
991 ft · 25 sec · Monroe Road
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19
Continue on Winkler Drive
1.1 mi · 2 min · Winkler Drive
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20
Turn right onto Galveston Road
1 km · 59 sec · Galveston Road
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21
Arrive at your destination
0 m · 1 sec · Galveston Road
Car Route Details
A richer read on the saved driving route between Austin and South Houston.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
Texas State Highway 71
Continue on Texas State Highway 71
151 mi · 02h 43m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A longer out-and-back drive
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
Slight Chance Rain Showers then Mostly Cloudy leaving Austin and Chance Rain Showers then Mostly Cloudy near South Houston.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Austin to South Houston?
The road trip is about 173.9 miles (279.8 km) and usually takes 03h 13m in normal driving conditions.
Is this a same-day trip or an overnight route?
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
What is the halfway point on this route?
Columbus is a useful midpoint, sitting about 86.9 miles from Austin and 87 miles from South Houston.
How much longer is the road route than the straight-line distance?
The direct path is about 155.8 miles (250.7 km), while the road route adds roughly 18.1 extra miles because roads do not follow the straight air line.
When is the best time to leave for this route?
A good departure window is usually 6:00 AM to 8:00 AM CDT. If you want a more comfortable same-day return, try to leave by 10:32 AM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $23.17 one way or $46.33 round trip. Estimated CO2 is about 54.5 kg one way.
What should you check before leaving?
Before you leave, expect Slight Chance Rain Showers then Mostly Cloudy around Austin and Chance Rain Showers then Mostly Cloudy near South Houston.
Stop Ideas Near Columbus
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Columbus.
Prairie View, TX
Bryan, TX
Houston
Houston, TX
Flight Path Map
This map shows the direct air route between Austin and South Houston. Straight-line distance: 155.79 mi (250.72 km).
#1 Austin
The eleventh most populous city in the United States and the center of the Austin metropolitan area.
| Population | 995,484 |
| Coordinates | 30.2671500, -97.7430600 |
| Altitude | 149 |
| Country | United States |
#2 South Houston
City in Harris County, Texas, United States
| Population | 17,446 |
| Coordinates | 29.6630100, -95.2354900 |
| Altitude | 9 |
| Country | United States |
End: South Houston (-95.23549, 29.66301)
Estimated Travel Time
Distance: 280 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 05h 47m |
| 40 mph (64.37 km/h) | 04h 20m |
| 50 mph (80.47 km/h) | 03h 28m |
| 60 mph (96.56 km/h) | 02h 53m |
| 70 mph (112.65 km/h) | 02h 29m |
| 80 mph (129 km/h) | 02h 10m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.78 | $23.17 | $46.33 |
| Mid-grade | $4.25 | $26.06 | $52.13 |
| Premium | $4.59 | $28.14 | $56.29 |
| Diesel | $3.99 | $24.48 | $48.95 |
Assumes 8.3 L/100 km (about 28.3 MPG). CO2 is an estimate and varies by vehicle, fuel blend, traffic, and terrain.
Prices in Texas · Apr 19, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.