How far is Port O'Connor, TX from Houston, TX?
The driving distance from Port O'Connor, TX to Houston, TX is about 151.8 miles (244.3 km), with a travel time of about 02h 52m by car.
- The straight-line flight distance is about 110.5 miles (177.9 km).
- For a round trip, plan for roughly 05h 44m 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 52m.
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 Texas, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Haze then Mostly Sunny
Slight Chance Showers And Thunderstorms
Driving Route Map
The map below follows the saved road route between Port O'Connor and Houston.
Turn-by-Turn Driving Directions
Step-by-step road directions between Port O'Connor and Houston.
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1
Start on 2nd Street
28 m · 8 sec · 2nd Street
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2
Turn left onto Adams Avenue
1.5 km · 2 min · Adams Avenue
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3
Continue on State Highway 185 East
6.9 mi · 12 min · State Highway 185 East
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4
Turn right
11.2 mi · 20 min
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5
Turn right onto State Highway 238
1.4 km · 2 min · State Highway 238
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6
At the end of the road, turn left
4.6 mi · 8 min
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7
Turn left onto South Commerce Street
2365 ft · 47 sec · South Commerce Street
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8
Turn straight onto Broadway Street
1.4 mi · 3 min · Broadway Street
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9
Turn right onto State Highway 35
11.6 mi · 17 min · State Highway 35
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10
Turn left
22.9 mi · 40 min
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11
Turn right onto Feeder Road
585 ft · 18 sec · Feeder Road
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12
Take the ramp left
835 ft · 23 sec
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13
Merge slight left
49.4 mi · 56 min
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14
Take the exit slight right
1551 ft · 38 sec
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15
Continue on 59 Northbound Frontage Road
1.6 mi · 2 min · 59 Northbound Frontage Road
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16
Continue straight
2146 ft · 59 sec
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17
Continue on US 59 Northbound Frontage Road
2 mi · 5 min · US 59 Northbound Frontage Road
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18
Continue on Southwest Freeway Frontage Road
1.3 mi · 3 min · Southwest Freeway Frontage Road
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19
Take the ramp slight left toward I 69 North, US 59 North
1304 ft · 32 sec
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20
Merge slight left onto Southwest Freeway
32.6 mi · 38 min · Southwest Freeway
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21
Keep slight left to continue on Richmond Avenue, Downtown via Louisiana Street
1.4 km · 1 min
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22
Take the exit slight right toward Downtown, Louisiana Street
47 m · 4 sec
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23
Continue on Louisiana Street
1.9 mi · 5 min · Louisiana Street
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24
Arrive at your destination
0 m · 1 sec · Louisiana Street
Car Route Details
A richer read on the saved driving route between Port O'Connor and Houston.
Interchange-aware route
The drive includes several ramps, exits, or merges, so checking the next few maneuvers before busy interchanges is useful.
Feeder Road
Merge slight left
49.4 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.
Haze then Mostly Sunny leaving Port O'Connor and Slight Chance Showers And Thunderstorms near Houston.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Port O'Connor to Houston?
The road trip is about 151.8 miles (244.3 km) and usually takes 02h 52m 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?
El Campo is a useful midpoint, sitting about 76 miles from Port O'Connor and 75.8 miles from Houston.
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 41.3 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 8:00 AM to 10:00 AM CDT. If you want a more comfortable same-day return, try to leave by 12:46 PM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $20.22 one way or $40.44 round trip. Estimated CO2 is about 47.5 kg one way.
What should you check before leaving?
Before you leave, expect Haze then Mostly Sunny around Port O'Connor and Slight Chance Showers And Thunderstorms near Houston.
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 Port O'Connor and Houston. Straight-line distance: 110.52 mi (177.87 km).
#1 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 |
#2 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 |
End: Louisiana Street (-95.363596, 29.76347)
Estimated Travel Time
Distance: 244 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 | $20.22 | $40.44 |
| Mid-grade | $4.25 | $22.75 | $45.50 |
| Premium | $4.59 | $24.56 | $49.12 |
| Diesel | $3.99 | $21.36 | $42.73 |
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.