How far is San Antonio, TX from Port Aransas, TX?
The driving distance from San Antonio, TX to Port Aransas, TX is about 163.4 miles (262.9 km), with a travel time of about 03h 08m by car.
- The straight-line flight distance is about 140.1 miles (225.4 km).
- For a round trip, plan for roughly 06h 16m 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 08m.
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.
Sunny
Mostly Clear
Driving Route Map
The map below follows the saved road route between San Antonio and Port Aransas.
Turn-by-Turn Driving Directions
Step-by-step road directions between San Antonio and Port Aransas.
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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
1.4 mi · 2 min · William J Bordelon Freeway
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7
Continue on Lucian Adams Freeway
108.5 mi · 1 hr 50 min · Lucian Adams Freeway
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8
Take the exit slight right toward TX 188, Sinton, Rockport
1068 ft · 26 sec
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9
Continue on Interstate Highway 37 Access Road
565 ft · 13 sec · Interstate Highway 37 Access Road
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10
Turn left
15.2 mi · 20 min
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11
Take the ramp left
2171 ft · 53 sec
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12
Merge slight left
1.1 mi · 1 min
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13
Take the exit slight right toward TX 89: Beeville, Portland
2463 ft · 1 min
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14
Merge slight left onto State Highway 89
2.6 mi · 3 min · State Highway 89
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15
Continue on US Highway 181
5.9 mi · 7 min · US Highway 181
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16
Continue on Railroad Avenue
1.3 mi · 2 min · Railroad Avenue
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17
Continue on US Highway 181
6.2 mi · 7 min · US Highway 181
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18
Take the exit slight right
934 ft · 23 sec
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19
Turn straight onto US Highway 181
2282 ft · 49 sec · US Highway 181
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20
Turn left onto Sunset Road
767 ft · 21 sec · Sunset Road
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21
Turn right onto South Gregory Avenue
74 m · 9 sec · South Gregory Avenue
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22
Turn left onto State Highway 35
2534 ft · 51 sec · State Highway 35
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23
Take the ramp slight left
748 ft · 18 sec
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24
Merge slight left
6.3 mi · 7 min
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25
Take the exit slight right toward TX 35 Business, FM 1069: Aransas Pass
2163 ft · 37 sec
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26
Turn straight onto West Wheeler Avenue
2.2 mi · 4 min · West Wheeler Avenue
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27
Keep slight right to continue on Harrison Boulevard
2151 ft · 43 sec · Harrison Boulevard
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28
Turn left onto West Goodnight Avenue
4.2 mi · 6 min · West Goodnight Avenue
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29
Continue straight
2.5 mi · 3 min
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30
Continue on Aransas Pass - Port Aransas, Mustang Island
1593 ft · 5 min · Aransas Pass - Port Aransas, Mustang Island
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31
Continue straight
666 ft · 11 sec
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32
Continue on West Cotter Avenue
2451 ft · 56 sec · West Cotter Avenue
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33
Turn right onto North Alister Street
1373 ft · 43 sec · North Alister Street
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34
Turn left
29 m · 9 sec
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35
Turn left
39 m · 9 sec
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36
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between San Antonio and Port Aransas.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
Lucian Adams Freeway
Continue on Lucian Adams Freeway
108 mi · 01h 50m
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.
Sunny leaving San Antonio and Mostly Clear near Port Aransas.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from San Antonio to Port Aransas?
The road trip is about 163.4 miles (262.9 km) and usually takes 03h 08m 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?
George West is a useful midpoint, sitting about 81.8 miles from San Antonio and 81.6 miles from Port Aransas.
How much longer is the road route than the straight-line distance?
The direct path is about 140.1 miles (225.4 km), while the road route adds roughly 23.3 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 10:44 AM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $21.77 one way or $43.53 round trip. Estimated CO2 is about 51.2 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around San Antonio and Mostly Clear near Port Aransas.
Flight Path Map
This map shows the direct air route between San Antonio and Port Aransas. Straight-line distance: 140.06 mi (225.41 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 Aransas
City in Texas, United States
| Population | 4,409 |
| Coordinates | 27.8339200, -97.0611000 |
| Altitude | 2 |
| Country | United States |
End: Port Aransas (-97.0611, 27.83392)
Estimated Travel Time
Distance: 263 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 05h 26m |
| 40 mph (64.37 km/h) | 04h 05m |
| 50 mph (80.47 km/h) | 03h 16m |
| 60 mph (96.56 km/h) | 02h 43m |
| 70 mph (112.65 km/h) | 02h 20m |
| 80 mph (129 km/h) | 02h 02m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.78 | $21.77 | $43.53 |
| Mid-grade | $4.25 | $24.49 | $48.98 |
| Premium | $4.59 | $26.44 | $52.89 |
| Diesel | $3.99 | $23.00 | $46.00 |
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 28, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.