How far is Port Allen, LA from Lafayette, LA?
The driving distance from Port Allen, LA to Lafayette, LA is about 54.2 miles (87.3 km), with a travel time of about 00h 56m by car.
- The straight-line flight distance is about 50.8 miles (81.7 km).
- For a round trip, plan for roughly 01h 52m 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 00h 56m.
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.
Town in the U.
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny then Slight Chance Showers And Thunderstorms
Partly Sunny then Chance Showers And Thunderstorms
Driving Route Map
The map below follows the saved road route between Port Allen and Lafayette.
Turn-by-Turn Driving Directions
Step-by-step road directions between Port Allen and Lafayette.
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1
Start on South Alexander Avenue
93 m · 11 sec · South Alexander Avenue
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2
Turn right onto Avenue A
16 m · 2 sec · Avenue A
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3
Turn left onto Dr Martin Luther King Jr Memorial Highway
1998 ft · 46 sec · Dr Martin Luther King Jr Memorial Highway
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4
Take the ramp straight toward I 10 West: Lafayette
2538 ft · 57 sec
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5
Merge slight left
50.2 mi · 57 min
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6
Take the exit slight right toward US 167: Morgan City
1688 ft · 41 sec
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7
Merge slight left onto Veterans Memorial Expressway
1669 ft · 24 sec · Veterans Memorial Expressway
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8
Continue on Northwest Evangeline Thruway
1.9 mi · 3 min · Northwest Evangeline Thruway
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9
Turn right onto Jefferson Boulevard
1147 ft · 34 sec · Jefferson Boulevard
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10
Continue on Rue Jefferson
1654 ft · 52 sec · Rue Jefferson
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11
Turn right onto Rue Vermilion Ouest
102 m · 17 sec · Rue Vermilion Ouest
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12
Arrive at your destination
0 m · 1 sec · Rue Vermilion Ouest
Car Route Details
A richer read on the saved driving route between Port Allen and Lafayette.
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 West
Merge slight left
50.2 mi · 00h 57m
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.
Mostly Sunny then Slight Chance Showers And Thunderstorms leaving Port Allen and Partly Sunny then Chance Showers And Thunderstorms near Lafayette.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Port Allen to Lafayette?
The road trip is about 54.2 miles (87.3 km) and usually takes 00h 56m 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?
Henderson is a useful midpoint, sitting about 27.1 miles from Port Allen and 27.2 miles from Lafayette.
How much longer is the road route than the straight-line distance?
The direct path is about 50.8 miles (81.7 km), while the road route adds roughly 3.4 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 4:38 PM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $7.23 one way or $14.47 round trip. Estimated CO2 is about 17 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny then Slight Chance Showers And Thunderstorms around Port Allen and Partly Sunny then Chance Showers And Thunderstorms near Lafayette.
Stop Ideas Near Henderson
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 Henderson.
Lafayette
New Iberia
Baton Rouge, Louisiana
Schriever
Flight Path Map
This map shows the direct air route between Port Allen and Lafayette. Straight-line distance: 50.79 mi (81.74 km).
#1 Port Allen
City in Louisiana, United States of America
| Population | 4,720 |
| Coordinates | 30.4521400, -91.2101100 |
| Altitude | 8 |
| Country | United States |
#2 Lafayette
The third most populous city in Acadiana, Louisiana.
| Population | 126,535 |
| Coordinates | 30.2240900, -92.0198400 |
| Altitude | 11 |
| Country | United States |
End: South Buchanan Street (-92.019794, 30.224075)
Estimated Travel Time
Distance: 87 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 48m |
| 40 mph (64.37 km/h) | 01h 21m |
| 50 mph (80.47 km/h) | 01h 05m |
| 60 mph (96.56 km/h) | 00h 54m |
| 70 mph (112.65 km/h) | 00h 46m |
| 80 mph (129 km/h) | 00h 40m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.79 | $7.23 | $14.47 |
| Mid-grade | $4.26 | $8.13 | $16.27 |
| Premium | $4.63 | $8.83 | $17.67 |
| Diesel | $5.42 | $10.34 | $20.69 |
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 10, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.