How far is San Antonio, TX from La Porte, TX?
The driving distance from San Antonio, TX to La Porte, TX is about 220.5 miles (354.8 km), with a travel time of about 03h 59m by car.
- The straight-line flight distance is about 209.5 miles (337.1 km).
- For a round trip, plan for roughly 07h 59m 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 59m.
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 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 La Porte.
Turn-by-Turn Driving Directions
Step-by-step road directions between San Antonio and La Porte.
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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 · 46 sec · East Market Street
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4
Turn left
111 m · 13 sec
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5
Turn straight onto East Commerce Street
1.2 km · 1 min · East Commerce Street
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6
Keep slight left to continue on East Commerce Street
2.7 mi · 4 min · East Commerce Street
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7
Turn slight right onto East Houston Street
1349 ft · 31 sec · East Houston Street
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8
Turn left onto Interstate 10 East
583 ft · 12 sec · Interstate 10 East
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9
Take the ramp slight left toward I 10 East, US 90 East
874 ft · 21 sec
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10
Merge slight left onto Jose Lopez Freeway
1.8 mi · 2 min · Jose Lopez Freeway
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11
Continue on 90th Infantry Division Highway
22.2 mi · 23 min · 90th Infantry Division Highway
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12
Continue on I 10 East: Houston, Austin, Waco
151.1 mi · 2 hr 34 min
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13
Take the exit slight left toward I 10 Toll: Katy Tollway
1548 ft · 22 sec
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14
Merge slight left onto Katy Tollway
3.2 mi · 4 min · Katy Tollway
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15
Take the exit slight right
1092 ft · 15 sec
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16
Merge slight right onto Katy Freeway
10.3 mi · 13 min · Katy Freeway
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17
Take the exit slight left toward I 45 South: Galveston
819 ft · 20 sec
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18
Merge slight left onto Gulf Freeway
7.5 mi · 9 min · Gulf Freeway
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19
Take the exit slight right toward I 610 East: Pasadena
48 m · 4 sec
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20
Continue straight
2404 ft · 34 sec
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21
Keep slight left to continue on I 610 East: Pasadena, Broadway Boulevard
823 ft · 12 sec
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22
Keep slight left to continue on I 610 East: Pasadena
1709 ft · 24 sec
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23
Merge slight left onto South Loop East
1 mi · 1 min · South Loop East
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24
Take the exit slight right toward TX 225 East: Pasadena, La Porte
543 ft · 13 sec
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25
Keep slight right to continue on Central Street, Old Galveston Road
63 m · 5 sec
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26
Turn straight
117 m · 9 sec
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27
Continue on La Porte Freeway Frontage Road
779 ft · 16 sec · La Porte Freeway Frontage Road
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28
Take the ramp straight toward TX 225 East
1392 ft · 34 sec
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29
Merge slight left onto La Porte Freeway
1.9 mi · 2 min · La Porte Freeway
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30
Continue on Pasadena Freeway
5.1 mi · 6 min · Pasadena Freeway
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31
Continue on La Porte Freeway
6.8 mi · 8 min · La Porte Freeway
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32
Keep slight right to continue on TX 146 South: La Porte
2908 ft · 1 min
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33
Merge slight left
1.4 km · 1 min
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34
Take the exit slight right toward TX 146 Business
1191 ft · 29 sec
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35
Turn straight onto State Highway 146 North
927 ft · 26 sec · State Highway 146 North
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36
Turn left onto West Main Street
1 km · 1 min · West Main Street
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37
Turn left onto North Broadway Street
53 m · 37 sec · North Broadway Street
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38
Continue on North Broadway Street
4 m · 1 sec · North Broadway Street
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39
Arrive at your destination
0 m · 1 sec · North Broadway Street
Car Route Details
A richer read on the saved driving route between San Antonio and La Porte.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
I 10 East
Continue on I 10 East: Houston, Austin, Waco
151 mi · 02h 34m
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.
Partly Sunny leaving San Antonio and Partly Sunny near La Porte.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from San Antonio to La Porte?
The road trip is about 220.5 miles (354.8 km) and usually takes 03h 59m 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?
Weimar is a useful midpoint, sitting about 110 miles from San Antonio and 110.4 miles from La Porte.
How much longer is the road route than the straight-line distance?
The direct path is about 209.5 miles (337.1 km), while the road route adds roughly 11 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 9:00 AM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $29.40 one way or $58.80 round trip. Estimated CO2 is about 69.1 kg one way.
What should you check before leaving?
Before you leave, expect Partly Sunny around San Antonio and Partly Sunny near La Porte.
Stop Ideas Near Weimar
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 Weimar.
Prairie View, TX
Austin
San Marcos Station
Taylor
Flight Path Map
This map shows the direct air route between San Antonio and La Porte. Straight-line distance: 209.5 mi (337.15 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 La Porte
City in LaPorte County, Indiana, United States of America
| Population | 35,775 |
| Coordinates | 29.6657800, -95.0193700 |
| Altitude | 6 |
| Country | United States |
End: La Porte (-95.01937, 29.66578)
Estimated Travel Time
Distance: 355 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 07h 20m |
| 40 mph (64.37 km/h) | 05h 30m |
| 50 mph (80.47 km/h) | 04h 24m |
| 60 mph (96.56 km/h) | 03h 40m |
| 70 mph (112.65 km/h) | 03h 08m |
| 80 mph (129 km/h) | 02h 45m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.78 | $29.40 | $58.80 |
| Mid-grade | $4.25 | $33.08 | $66.16 |
| Premium | $4.59 | $35.72 | $71.44 |
| Diesel | $3.99 | $31.07 | $62.13 |
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 31, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.