How far is Houston, TX from Port O'Connor, TX?
The driving distance from Houston, TX to Port O'Connor, TX is about 152 miles (244.6 km), with a travel time of about 03h 35m by car.
- The straight-line flight distance is about 110.5 miles (177.9 km).
- For a round trip, plan for roughly 07h 11m 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 35m.
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.
Slight Chance Showers And Thunderstorms
Haze then Mostly Sunny
Driving Route Map
The map below follows the saved road route between Houston and Port O'Connor.
Turn-by-Turn Driving Directions
Step-by-step road directions between Houston and Port O'Connor.
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1
Start on Louisiana Street
45 m · 12 sec · Louisiana Street
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2
Turn left onto Congress Street
91 m · 15 sec · Congress Street
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3
Turn left onto Smith Street
2.7 mi · 6 min · Smith Street
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4
Merge slight left onto Southwest Freeway
32.8 mi · 38 min · Southwest Freeway
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5
Take the exit slight right toward Spur 10: Cottonwood, Church Road, Hartledge Road
1158 ft · 28 sec
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6
Turn straight onto Southwest Freeway Frontage Road
1.5 km · 2 min · Southwest Freeway Frontage Road
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7
Continue on Southwest Freeway Frontage Road
2217 ft · 1 min · Southwest Freeway Frontage Road
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8
Continue on US 59 Southbound Frontage Road
1.4 km · 2 min · US 59 Southbound Frontage Road
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9
Take the ramp straight
1027 ft · 25 sec
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10
Merge slight left
9.2 mi · 11 min
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11
Keep slight left
6.6 mi · 8 min
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12
Take the exit slight right
1.5 mi · 2 min
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13
Continue on US Highway 59
35.2 mi · 40 min · US Highway 59
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14
Take the exit slight right toward TX 172, FM 710
949 ft · 27 sec
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15
Turn left onto Feeder Road
113 m · 15 sec · Feeder Road
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16
Turn left
1.4 mi · 2 min
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17
Continue on State Highway 172
21.6 mi · 38 min · State Highway 172
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18
Turn slight right
1086 ft · 40 sec
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19
Continue straight
1359 ft · 50 sec
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20
Turn straight
11.1 mi · 17 min
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21
Turn left onto Broadway Street
1.5 mi · 3 min · Broadway Street
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22
Continue on North Commerce Street
2365 ft · 49 sec · North Commerce Street
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23
Turn right onto East Austin Street
4.5 mi · 8 min · East Austin Street
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24
Continue straight
1.5 km · 2 min
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25
Turn left
11.2 mi · 20 min
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26
At the end of the road, turn left onto State Highway 185 East
6.9 mi · 12 min · State Highway 185 East
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27
Continue on Adams Avenue
1.5 km · 2 min · Adams Avenue
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28
Turn right onto 2nd Street
28 m · 3 sec · 2nd Street
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29
Arrive at your destination
0 m · 1 sec · 2nd Street
Car Route Details
A richer read on the saved driving route between Houston and Port O'Connor.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
US Highway 59
Continue on US Highway 59
35.2 mi · 00h 40m
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 Showers And Thunderstorms leaving Houston and Haze then Mostly Sunny near Port O'Connor.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Houston to Port O'Connor?
The road trip is about 152 miles (244.6 km) and usually takes 03h 35m 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?
El Campo is a useful midpoint, sitting about 76.1 miles from Houston and 75.9 miles from Port O'Connor.
How much longer is the road route than the straight-line distance?
The direct path is about 110.5 miles (177.9 km), while the road route adds roughly 41.5 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 9:48 AM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $20.26 one way or $40.51 round trip. Estimated CO2 is about 47.6 kg one way.
What should you check before leaving?
Before you leave, expect Slight Chance Showers And Thunderstorms around Houston and Haze then Mostly Sunny near Port O'Connor.
Stop Ideas Near El Campo
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 El Campo.
Prairie View, TX
Houston, TX
Houston
Flight Path Map
This map shows the direct air route between Houston and Port O'Connor. Straight-line distance: 110.52 mi (177.87 km).
#1 Houston
The fourth most populous city in the United States and the center of the Houston metropolitan area.
| Population | 2,316,120 |
| Coordinates | 29.7632800, -95.3632700 |
| Altitude | 12 |
| Country | United States |
#2 Port O'Connor
Port O'Connor is a place in Texas, United States.
| Population | 0 |
| Coordinates | 28.4483400, -96.4058100 |
| Altitude | 1 |
| Country | United States |
End: Port O'Connor (-96.40581, 28.44834)
Estimated Travel Time
Distance: 245 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 05h 03m |
| 40 mph (64.37 km/h) | 03h 47m |
| 50 mph (80.47 km/h) | 03h 02m |
| 60 mph (96.56 km/h) | 02h 31m |
| 70 mph (112.65 km/h) | 02h 10m |
| 80 mph (129 km/h) | 01h 53m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.78 | $20.26 | $40.51 |
| Mid-grade | $4.25 | $22.79 | $45.58 |
| Premium | $4.59 | $24.61 | $49.22 |
| Diesel | $3.99 | $21.40 | $42.80 |
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 29, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.