How far is San Antonio, TX from Port Lavaca, TX?
The driving distance from San Antonio, TX to Port Lavaca, TX is about 141.7 miles (228.1 km), with a travel time of about 02h 51m by car.
- The straight-line flight distance is about 126 miles (202.7 km).
- For a round trip, plan for roughly 05h 42m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 8:00 AM to 10:00 AM CDT.
Reverse, save, or send this route
This route works well as a day trip with time at the destination. Copy the route link, send it to another device, or print a clean version before you head out.
This route works well as a day trip with time at the destination.
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 02h 51m.
A morning start gives you useful time at the destination and keeps the return out of the late evening.
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 Gonzales County, Texas, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Partly Sunny
Partly Sunny
Driving Route Map
The map below follows the saved road route between San Antonio and Port Lavaca.
Turn-by-Turn Driving Directions
Step-by-step road directions between San Antonio and Port Lavaca.
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1
Start on Dolorosa Street
44 m · 5 sec · Dolorosa Street
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2
Continue on West Market Street
1893 ft · 42 sec · West Market Street
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3
Continue on East Market Street
2143 ft · 41 sec · East Market Street
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4
Turn right onto Tower of the Americas Way
957 ft · 21 sec · Tower of the Americas Way
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5
Take the ramp slight left toward I 37 South, US 281 South
1374 ft · 34 sec
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6
Merge slight left onto William J Bordelon Freeway
1.1 mi · 1 min · William J Bordelon Freeway
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7
Take the exit slight right toward I 10 East, US 90 East, US 87 South, I 10 West, US 90 West, US 87 North: Houston, El Paso
903 ft · 22 sec
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8
Keep slight left to continue on I 10 East, US 90 East, US 87 South: Houston, Victoria
3113 ft · 1 min
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9
Merge slight left onto Jose Lopez Freeway
1.7 mi · 2 min · Jose Lopez Freeway
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10
Take the exit slight right toward US 87 South: Roland Avenue, Victoria
1243 ft · 33 sec
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11
Turn right onto Roland Avenue
2819 ft · 1 min · Roland Avenue
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12
Turn slight left onto Rigsby Avenue
4.7 mi · 8 min · Rigsby Avenue
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13
Continue on US Highway 87 East
48.7 mi · 56 min · US Highway 87 East
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14
Continue on West Fay
22.9 mi · 25 min · West Fay
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15
Turn left
3.9 mi · 5 min
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16
Turn left onto South Esplanade Street
1.2 km · 60 sec · South Esplanade Street
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17
Turn right onto East Broadway Street
23.8 mi · 27 min · East Broadway Street
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18
Continue on North Main Street
3.9 mi · 6 min · North Main Street
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19
Turn left onto East Rio Grande Street
1331 ft · 26 sec · East Rio Grande Street
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20
Turn right onto North Navarro Street
2462 ft · 51 sec · North Navarro Street
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21
Turn left onto East Goodwin Avenue
1798 ft · 31 sec · East Goodwin Avenue
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22
Continue on Port Lavaca Drive
21.3 mi · 25 min · Port Lavaca Drive
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23
Keep slight left
5.4 mi · 7 min
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24
Arrive at your destination
0 m · 1 sec · East Main Street
Car Route Details
A richer read on the saved driving route between San Antonio and Port Lavaca.
Interchange-aware route
The drive includes several ramps, exits, or merges, so checking the next few maneuvers before busy interchanges is useful.
US Highway 87 East
Continue on US Highway 87 East
48.7 mi · 00h 56m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A comfortable day-trip route
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
Partly Sunny leaving San Antonio and Partly Sunny near Port Lavaca.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from San Antonio to Port Lavaca?
The road trip is about 141.7 miles (228.1 km) and usually takes 02h 51m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
What is the halfway point on this route?
Smiley is a useful midpoint, sitting about 70.8 miles from San Antonio and 70.9 miles from Port Lavaca.
How much longer is the road route than the straight-line distance?
The direct path is about 126 miles (202.7 km), while the road route adds roughly 15.7 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 8:00 AM to 10:00 AM CDT. If you want a more comfortable same-day return, try to leave by 12:48 PM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $18.90 one way or $37.79 round trip. Estimated CO2 is about 44.4 kg one way.
What should you check before leaving?
Before you leave, expect Partly Sunny around San Antonio and Partly Sunny near Port Lavaca.
Stop Ideas Near Smiley
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 Smiley.
San Marcos Station
San Antonio Station
Austin
Flight Path Map
This map shows the direct air route between San Antonio and Port Lavaca. Straight-line distance: 125.92 mi (202.65 km).
#1 San Antonio
The seventh most populous city in the United States and the center of the San Antonio metropolitan area.
| Population | 1,567,118 |
| Coordinates | 29.4241200, -98.4936300 |
| Altitude | 198 |
| Country | United States |
#2 Port Lavaca
City in Texas, United States
| Population | 11,671 |
| Coordinates | 28.6150000, -96.6260900 |
| Altitude | 4 |
| Country | United States |
End: Port Lavaca (-96.62609, 28.615)
Estimated Travel Time
Distance: 228 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 04h 43m |
| 40 mph (64.37 km/h) | 03h 32m |
| 50 mph (80.47 km/h) | 02h 50m |
| 60 mph (96.56 km/h) | 02h 21m |
| 70 mph (112.65 km/h) | 02h 01m |
| 80 mph (129 km/h) | 01h 46m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.78 | $18.90 | $37.79 |
| Mid-grade | $4.25 | $21.26 | $42.52 |
| Premium | $4.59 | $22.96 | $45.91 |
| Diesel | $3.99 | $19.97 | $39.93 |
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 · May 30, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.