Origin
Port Neches, TX
Night in Port Neches on Tuesday
Local time
10:15 PM
CDT
Current temp
69°F
Unavailable
Live forecast
Trip from Port Neches, TX to San Antonio, TX
Data updated 0 seconds ago
Drive Time
5h 16m
Distance
285.6 mi
460 km
Drive Score
8/10
Great drive
Same Day?
Yes, doable
Fuel Cost
$43
one way
EV Charging
Loading...
station data
Best Time to Leave
4 AM
5h 3m
★
6 AM
5h 16m
8 AM
5h 43m
10 AM
5h 26m
12 PM
5h 23m
3 PM
5h 27m
5 PM
5h 42m
8 PM
5h 8m
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
Port Neches, TX
Kei Scampa
San Antonio, TX
Wikimedia Commons
Trip Overview
Traveling from Port Neches to San Antonio covers 290.5 miles across the Texas Great Plains. You should plan for a total drive time of approximately 4 hours and 22 minutes. Because this is a turn-heavy local drive, it is best suited as a single-day trip rather than an overnight journey. Budget about $43 for fuel to complete the trek comfortably. Navigating this route involves a mix of local roads like FM 365, Jade Avenue, and the H O Mills Highway. Since the entire drive stays within the Great Plains region of Texas, you will experience a consistent landscape throughout your transit.
Trip Pace
Same-day drive is realistic
A same-day return is possible, but it will make for a full day on the road.
Break Rhythm
1 planned break
Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.
Midpoint
142.8 miles from Port Neches, TX
A natural place for your longest stop of the day , about 2h 39m into the drive .
Loading map...
Drive Character
Expect a hands-on driving experience, as this route features zero percent highway share. You will navigate a series of local roads that require your full attention, making it a turn-heavy drive rather than a mindless cruise. Because the longest stretch on FM 365 is negligible, you will rarely find yourself on long, uninterrupted straightaways. The road's personality is defined by constant adjustments and local navigation through the Texas interior. Be prepared for a technical drive that demands more engagement than a standard interstate commute.
Most of the miles stay on highways, which makes pacing and fuel planning easier than turn-by-turn city driving.
There are about 16 navigation steps in the underlying route data, so the final approach matters more than the middle miles.
I 10 is the longest continuous segment at about 246.1 miles.
How Hard Is This Drive?
This is a straightforward highway drive that stays mostly on I 10 and H O Mills Highway. You will hit about 9 points where you need to pay attention to lane position or signs. The trickiest moment comes around 32 miles in near I 10.
Route Complexity
6/10
Moderate - straightforward overall, but long enough or busy enough to require pacing
This drive requires moderate attention. Across 285.6 miles you will encounter 9 spots where lane choice or exit timing matters. Not difficult for experienced highway drivers, but worth previewing the tricky sections before you go.
Where does it get tricky?
The main spots that need attention: at 32 miles (I 10): Merge point - match speed before joining. Lane positioning matters here; at 266.1 miles (I 10; US 90; TX 130): Highway fork - watch signs carefully. Lane positioning matters here; at 278.1 miles (I 10; US 90; TX 130 / 90th Infantry Division Highway): Highway fork - watch signs carefully. Lane positioning matters here.
Critical Maneuvers
5 of 9 key pointsThese are the spots where you need to pay the most attention. Preview them before you drive.
5
32 mi into trip
|
~40m in
|
I 10
Merge onto I 10
Merge point - match speed before joining. Lane positioning matters here
Use the straight / slight right lanes.
6
266.1 mi into trip
|
~4h 51m in
|
I 10; US 90; TX 130
Keep slight left at fork onto I 10; US 90; TX 130
Highway fork - watch signs carefully. Lane positioning matters here
Use the straight / slight right lanes.
6
278.1 mi into trip
|
~5h 4m in
|
I 10; US 90; TX 130 / 90th Infantry Division Highway
Keep slight left at fork onto I 10; US 90; TX 130 / 90th Infantry Division Highway
Highway fork - watch signs carefully. Lane positioning matters here
Use the straight / slight right lanes.
8
280.5 mi into trip
|
~5h 7m in
Take the exit toward Commerce Street, Houston Street
Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one
Use the straight / slight right lanes.
Exit 579
Toward Commerce Street, Houston Street
5
285.6 mi into trip
|
~5h 16m in
|
Dolorosa Street
Turn left onto Dolorosa Street
Navigation decision point
Main Roads
| Road | Distance | Duration |
|---|---|---|
| I 10 | 246.1 mi | 4h 24m |
| H O Mills Highway | 19.8 mi | 20m |
| FM 365 | 5 mi | 7m |
| East Commerce Street | 4.3 mi | 7m |
| TX 73 | 3.3 mi | 3m |
| Nall Street | 2.2 mi | 4m |
| Jade Avenue | 1.8 mi | 4m |
| Jose Lopez Freeway | 1.6 mi | 1m |
Longest stretch:
I 10
— 246.1 mi, about 4h 24m
Turn-by-Turn Driving Directions
Step-by-step road directions between Port Neches, TX and San Antonio, TX.
1
Start on FM 365
2.2 mi
·
4 min
·
Nall Street
2
Continue on FM 365
5.0 mi
·
7 min
·
FM 365
Use the left lane.
3
Turn left onto Jade Avenue
1.8 mi
·
4 min
·
Jade Avenue
4
Turn right onto TX 73
20 mi
·
20 min
·
H O Mills Highway
5
Turn straight onto TX 73
3.3 mi
·
3 min
·
TX 73
6
Merge onto I 10
234 mi
·
4 hr 11 min
·
I 10
Use the straight / slight right lanes.
7
Keep slight left at fork onto I 10; US 90; TX 130
12 mi
·
12 min
·
I 10; US 90; TX 130
Use the straight / slight right lanes.
8
Keep slight left at fork onto I 10; US 90; TX 130
0.8 mi
·
51 sec
·
90th Infantry Division Highway
Use the straight / slight right lanes.
9
Continue on I 10; US 90
1.6 mi
·
1 min
·
Jose Lopez Freeway
Use the straight / slight right lanes.
10
Take the exit
0.1 mi
·
19 sec
Exit 579
Toward Commerce Street, Houston Street
Use the straight / slight right lanes.
11
Turn straight onto Interstate 10 East
0.3 mi
·
38 sec
·
Interstate 10 East
12
Turn right onto East Houston Street
0.2 mi
·
20 sec
·
East Houston Street
13
Turn slight left onto East Commerce Street
4.3 mi
·
7 min
·
East Commerce Street
14
Turn left onto Military Plaza
392 ft
·
15 sec
·
Military Plaza
15
Turn left onto Dolorosa Street
327 ft
·
8 sec
·
Dolorosa Street
16
Arrive at destination
Dolorosa Street
Trip Plan
To make the most of your 4 hour and 22 minute journey, plan for at least one dedicated stop along the way to break up the local driving. Leaving early in the day is your best strategy to avoid fatigue, especially since the turn-heavy nature of these roads requires constant focus. Keep your eyes on the fuel gauge, as the $43 estimated cost can fluctuate based on your vehicle's efficiency and local road idling. Since you are relying on local infrastructure rather than major interstates, ensure your GPS is updated before you head out. A helpful tip for this specific route is to prioritize your route planning on FM 365, as navigating these specific local transitions is the primary challenge of the trip.
Morning Departure
An early start around 7-8 AM gets you there with plenty of daylight left.
Evening Departure
A late afternoon start means arriving after dark. Morning is better.
You can normally do this drive in one day.
Plan roughly 1 meaningful break for fuel, food, and rest.
The halfway point lands around 142.8 miles from Port Neches, TX, or about 2h 39m into the drive.
The longest continuous stretch on this route runs about 246.1 miles.
This is a comfortable same-day trip.
Departure
Before you leave
Start with fuel, water, and navigation already sorted so the first hour feels easy.
First stop
Around 80 miles or 1h 32m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 142.8 miles or 2h 39m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 4h 17m
Traffic, exits, and arrival timing usually matter more near San Antonio, TX than in the middle of the route.
Before You Leave
+
Open the route before leaving Port Neches, TX so your first major turns are already loaded.
+
Leave with enough water and a charging cable within reach, not packed away.
+
Check your fuel range against the first long segment, especially if you are starting outside city service areas.
Day 1
Settle into the route from Port Neches, TX
This is one driving day of about 285.6 miles and 5h 16m.
Your first comfortable stop window is around 80 miles from Port Neches, TX.
This route can stay practical as a one-day drive if traffic stays reasonable.
Plan about 1 real break rather than only quick fuel stops.
The longest stretch is on I 10 for about 246.1 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Halfway Point
Midpoint
About 142.8 mi from Port Neches, TX · 2h 39m into the drive
Mid-route town
Meal stop
143 mi into the route
Best for: Lunch, fuel, and a longer reset
This sits close to the middle of the route, so it works well for the longest stop of the day.
Pacing Suggestions
Fuel and coffee
A short stop after about 80 miles helps settle the day before fatigue starts building.
Meal break
The midpoint is around 142.8 miles from Port Neches, TX, which is a good place for a longer meal and fuel stop.
Before the longest stretch
Fuel checkTop up before I 10 if your tank is already low. That segment runs about 246.1 miles.
Arriving in San Antonio, TX
The final approach into San Antonio, TX usually feels slower than the middle of the drive, so avoid planning your tightest schedule at the very end.
Try to arrive with enough fuel left to skip an immediate station stop unless you already know the area around San Antonio, TX.
After long uninterrupted mileage, take five minutes before the last urban segment to reset and refocus on exits, merges, and city traffic.
These stop ideas are pacing suggestions — the exact town or exit can change with traffic, hotel plans, and fuel range.
Fuel & Cost
Regular Gas
$43.15 one way
$86.31 round trip
$3.84/gal
25.4 MPG avg
100 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $4.20 | $47.24 | $94.47 |
| premium | $4.54 | $50.99 | $101.98 |
| diesel | $5.61 | $63.06 | $126.11 |
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$43
Meals
$25–$50
Total
$68–$93
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 99.9 kg one way. Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $30 in charging · 1 stop · 67% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 85.7 | 1 | $29.99 | $13.71 |
| Efficient EV | 71.4 | 0 | $24.99 | $11.42 |
| EV Truck/SUV | 114.2 | 1 | $39.98 | $18.28 |
Gas CO2
100 kg
EV CO2
33 kg (67% less)
Plan for 1 charging stop. A 30-minute DC fast charge mid-route should be enough to complete the trip comfortably.
DC fast charging avg $0.35/kWh. Home charging avg $0.16/kWh. US grid CO2: 0.39 kg/kWh.
Travel Intel
Current conditions at both ends of the drive.
Destination
San Antonio, TX
Night in San Antonio on Tuesday
Local time
10:15 PM
CDT
Current temp
77°F
Unavailable
Live forecast
Seasonal Notes
Summer travel usually means heavier construction, hotter rest stops, and busier weekend traffic around major cities.
Winter travel shortens daylight, so a route that looks manageable on paper can feel much longer after dark.
Holiday weekends tend to make both departure and arrival windows slower than the raw route time suggests.
Time zone
Same local time
Origin and destination are on the same clock, so arrival timing is easier to judge at a glance.
Temperature spread
8 degrees warmer at arrival
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
5h 16m on the road
An early start around 7-8 AM gets you there with plenty of daylight left.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
Frequently Asked Questions
The drive from Port Neches, TX to San Antonio, TX covers 285.6 miles and takes about 5h 16m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.
The main roads are I 10, H O Mills Highway, FM 365. Most of the drive stays on highways, so watch for ramps and exits.
This is a comfortable same-day trip.
The midpoint is about 142.8 miles from Port Neches, TX. Look for rest areas, gas stations, or food options near the halfway mark.
At current regular gas prices, expect to spend about $43.15 one way. This estimate uses 25.4 MPG — your actual cost will vary with your vehicle's fuel efficiency and current gas prices.
An early start around 7-8 AM gets you there with plenty of daylight left. A late afternoon start means arriving after dark. Morning is better.
Plan about 1 meaningful break for fuel, food, or rest. Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.
This drive requires moderate attention. Across 285.6 miles you will encounter 9 spots where lane choice or exit timing matters. Not difficult for experienced highway drivers, but worth previewing the tricky sections before you go.
The main spots that need attention: at 32 miles (I 10): Merge point - match speed before joining. Lane positioning matters here; at 266.1 miles (I 10; US 90; TX 130): Highway fork - watch signs carefully. Lane positioning matters here; at 278.1 miles (I 10; US 90; TX 130 / 90th Infantry Division Highway): Highway fork - watch signs carefully. Lane positioning matters here.
The route from Port Neches, TX to San Antonio, TX does not surface many named destination signs beyond the main corridor.
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