How far is Lafayette, LA from Port Sulphur, LA?
The driving distance from Lafayette, LA to Port Sulphur, LA is about 182.2 miles (293.3 km), with a travel time of about 03h 41m by car.
- The straight-line flight distance is about 148.6 miles (239.1 km).
- For a round trip, plan for roughly 07h 22m 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 41m.
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.
Neighborhood in Manhattan, New York City
Route Weather Snapshot
Check the forecast at both ends before you head out.
Chance Showers And Thunderstorms
Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms
Driving Route Map
The map below follows the saved road route between Lafayette and Port Sulphur.
Turn-by-Turn Driving Directions
Step-by-step road directions between Lafayette and Port Sulphur.
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1
Start on Rue Vermilion Ouest
102 m · 22 sec · Rue Vermilion Ouest
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2
Turn left onto Rue Jefferson
1654 ft · 51 sec · Rue Jefferson
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3
Continue on Jefferson Boulevard
1447 ft · 47 sec · Jefferson Boulevard
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4
Turn left onto Northeast Evangeline Thruway
1.9 mi · 3 min · Northeast Evangeline Thruway
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5
Take the exit straight toward I 10 East: Baton Rouge
2523 ft · 1 min
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6
Merge slight left
126.9 mi · 2 hr 25 min
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7
Keep slight right to continue on Pontchartrain Expressway
3.5 mi · 4 min · Pontchartrain Expressway
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8
Keep slight left to continue on Pontchartrain Expressway
2.4 mi · 3 min · Pontchartrain Expressway
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9
Continue on Crescent City Connection
1.1 km · 1 min · Crescent City Connection
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10
Continue on Westbank Expressway
2.7 mi · 4 min · Westbank Expressway
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11
Take the exit slight right toward LA 23 South, LA 18 West: Lafayette Street
1312 ft · 32 sec
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12
Turn straight onto Westbank Expressway
90 m · 13 sec · Westbank Expressway
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13
Turn left onto Lafayette Street
2063 ft · 29 sec · Lafayette Street
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14
Continue on Belle Chasse Highway
42.3 mi · 58 min · Belle Chasse Highway
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15
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Lafayette and Port Sulphur.
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
Merge slight left
127 mi · 02h 25m
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.
Chance Showers And Thunderstorms leaving Lafayette and Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms near Port Sulphur.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Lafayette to Port Sulphur?
The road trip is about 182.2 miles (293.3 km) and usually takes 03h 41m 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?
Gramercy is a useful midpoint, sitting about 91.1 miles from Lafayette and 91.2 miles from Port Sulphur.
How much longer is the road route than the straight-line distance?
The direct path is about 148.6 miles (239.1 km), while the road route adds roughly 33.6 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 9:38 AM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $24.35 one way or $48.70 round trip. Estimated CO2 is about 57.1 kg one way.
What should you check before leaving?
Before you leave, expect Chance Showers And Thunderstorms around Lafayette and Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms near Port Sulphur.
Stop Ideas Near Gramercy
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 Gramercy.
Schriever
Hammond
New Orleans Union Passenger Terminal
Baton Rouge, Louisiana
Flight Path Map
This map shows the direct air route between Lafayette and Port Sulphur. Straight-line distance: 148.54 mi (239.06 km).
#1 Lafayette
The third most populous city in Acadiana, Louisiana.
| Population | 126,535 |
| Coordinates | 30.2240900, -92.0198400 |
| Altitude | 11 |
| Country | United States |
#2 Port Sulphur
City in Louisiana, United States of America
| Population | 1,760 |
| Coordinates | 29.4804900, -89.6939500 |
| Altitude | 1 |
| Country | United States |
End: Port Sulphur (-89.69395, 29.48049)
Estimated Travel Time
Distance: 293 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 06h 04m |
| 40 mph (64.37 km/h) | 04h 33m |
| 50 mph (80.47 km/h) | 03h 38m |
| 60 mph (96.56 km/h) | 03h 02m |
| 70 mph (112.65 km/h) | 02h 36m |
| 80 mph (129 km/h) | 02h 16m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.79 | $24.35 | $48.70 |
| Mid-grade | $4.26 | $27.39 | $54.77 |
| Premium | $4.63 | $29.74 | $59.48 |
| Diesel | $5.42 | $34.82 | $69.64 |
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 Louisiana · Apr 23, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.