How far is Bossier City, LA from Port Sulphur, LA?
The driving distance from Bossier City, LA to Port Sulphur, LA is about 373.9 miles (601.8 km), with a travel time of about 07h 05m by car.
- The straight-line flight distance is about 318 miles (511.8 km).
- For a round trip, plan for roughly 14h 11m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 7:30 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 07h 05m.
Starting early still helps, but most travelers will want a longer stop or an overnight stay on a route this long.
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.
Parish seat of St.
Route Weather Snapshot
Check the forecast at both ends before you head out.
Partly Cloudy
Mostly Clear
Driving Route Map
The map below follows the saved road route between Bossier City and Port Sulphur.
Turn-by-Turn Driving Directions
Step-by-step road directions between Bossier City and Port Sulphur.
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1
Start on Monroe Street
24 m · 5 sec · Monroe Street
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2
Turn right onto Barksdale Boulevard
897 ft · 33 sec · Barksdale Boulevard
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3
Take the ramp slight left
1272 ft · 31 sec
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4
Merge slight left onto Purple Heart Recipients Highway
1.4 mi · 2 min · Purple Heart Recipients Highway
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5
Take the exit slight right toward I 49 South: Alexandria
1.3 km · 2 min
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6
Continue on Louisiana Korean War Veterans Memorial Highway
186.4 mi · 3 hr 10 min · Louisiana Korean War Veterans Memorial Highway
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7
Take the exit slight right toward US 190: Baton Rouge, Opelousas
2681 ft · 1 min
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8
Keep slight left to continue on US 190 East: Baton Rouge
110 m · 10 sec
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9
Merge slight right
49.5 mi · 1 hr 3 min
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10
Keep slight right
3.6 mi · 5 min
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11
Turn left onto I 10 East: Baton Rouge
1512 ft · 37 sec
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12
Merge slight left
78.6 mi · 1 hr 30 min
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13
Keep slight right to continue on Pontchartrain Expressway
3.5 mi · 4 min · Pontchartrain Expressway
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14
Keep slight left to continue on Pontchartrain Expressway
2.4 mi · 3 min · Pontchartrain Expressway
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15
Continue on Crescent City Connection
1.1 km · 1 min · Crescent City Connection
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16
Continue on Westbank Expressway
2.7 mi · 4 min · Westbank Expressway
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17
Take the exit slight right toward LA 23 South, LA 18 West: Lafayette Street
1312 ft · 32 sec
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18
Turn straight onto Westbank Expressway
90 m · 13 sec · Westbank Expressway
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19
Turn left onto Lafayette Street
2063 ft · 29 sec · Lafayette Street
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20
Continue on Belle Chasse Highway
42.3 mi · 58 min · Belle Chasse Highway
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21
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Bossier City and Port Sulphur.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
Louisiana Korean War Veterans Memorial Highway
Continue on Louisiana Korean War Veterans Memorial Highway
186 mi · 03h 10m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
Better with a longer stop
This route is long enough that most travelers will be better off planning an overnight stay or a more deliberate stop window.
Partly Cloudy leaving Bossier City and Mostly Clear near Port Sulphur.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Bossier City to Port Sulphur?
The road trip is about 373.9 miles (601.8 km) and usually takes 07h 05m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route is long enough that most travelers will be better off planning an overnight stay or a more deliberate stop window.
What is the halfway point on this route?
Opelousas is a useful midpoint, sitting about 187 miles from Bossier City and 186.9 miles from Port Sulphur.
How much longer is the road route than the straight-line distance?
The direct path is about 318 miles (511.8 km), while the road route adds roughly 55.9 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 7:30 AM CDT. Starting early still helps, but most travelers will want a longer stop or an overnight stay on a route this long.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $49.99 one way or $99.98 round trip. Estimated CO2 is about 117.3 kg one way.
What should you check before leaving?
Before you leave, expect Partly Cloudy around Bossier City and Mostly Clear near Port Sulphur.
Stop Ideas Near Opelousas
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Port Barre Park
Washington Town Hall
Port Barre Community Center
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Opelousas.
Lafayette
New Iberia
Baton Rouge, Louisiana
Lake Charles
Flight Path Map
This map shows the direct air route between Bossier City and Port Sulphur. Straight-line distance: 318.04 mi (511.84 km).
#1 Bossier City
The most populous city in Bossier Parish, Louisiana.
| Population | 68,159 |
| Coordinates | 32.5159900, -93.7321200 |
| Altitude | 53 |
| 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: 602 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 12h 27m |
| 40 mph (64.37 km/h) | 09h 20m |
| 50 mph (80.47 km/h) | 07h 28m |
| 60 mph (96.56 km/h) | 06h 13m |
| 70 mph (112.65 km/h) | 05h 20m |
| 80 mph (129 km/h) | 04h 39m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.79 | $49.99 | $99.98 |
| Mid-grade | $4.26 | $56.22 | $112.44 |
| Premium | $4.63 | $61.05 | $122.10 |
| Diesel | $5.42 | $71.48 | $142.96 |
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 16, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.