How far is Biloxi, MS from Bay Saint Louis, MS?
The driving distance from Biloxi, MS to Bay Saint Louis, MS is about 29.1 miles (46.9 km), with a travel time of about 00h 49m by car.
- The straight-line flight distance is about 27.2 miles (43.8 km).
- For a round trip, plan for roughly 01h 39m 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 49m.
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.
The second most populous city in Harrison County, Mississippi.
Route Weather Snapshot
Check the forecast at both ends before you head out.
Sunny
Driving Route Map
The map below follows the saved road route between Biloxi and Bay Saint Louis.
Turn-by-Turn Driving Directions
Step-by-step road directions between Biloxi and Bay Saint Louis.
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1
Start on Howard Avenue
28 m · 12 sec · Howard Avenue
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2
Turn left onto Main Street
1197 ft · 37 sec · Main Street
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3
Turn right onto Beach Boulevard
8.3 mi · 15 min · Beach Boulevard
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4
Continue on Beach Drive
1.3 mi · 2 min · Beach Drive
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5
Continue on East Beach Boulevard
3.1 mi · 5 min · East Beach Boulevard
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6
Continue on West Beach Boulevard
15.2 mi · 24 min · West Beach Boulevard
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7
Turn left onto North Beach Boulevard
1.1 km · 1 min · North Beach Boulevard
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8
Turn right onto Main Street
1087 ft · 27 sec · Main Street
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9
Turn left onto South 2nd Street
1012 ft · 28 sec · South 2nd Street
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10
Arrive at your destination
0 m · 1 sec · South 2nd Street
Car Route Details
A richer read on the saved driving route between Biloxi and Bay Saint Louis.
Turn-heavy local drive
The route has frequent decision points for its length, so lane choice and turn timing will matter more than cruising speed.
West Beach Boulevard
Continue on West Beach Boulevard
15.2 mi · 00h 24m
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.
Sunny leaving Biloxi and Sunny near Bay Saint Louis.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Biloxi to Bay Saint Louis?
The road trip is about 29.1 miles (46.9 km) and usually takes 00h 49m 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?
Gulfport is a useful midpoint, sitting about 14.5 miles from Biloxi and 14.6 miles from Bay Saint Louis.
How much longer is the road route than the straight-line distance?
The direct path is about 27.2 miles (43.8 km), while the road route adds roughly 1.9 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 8:00 AM to 10:00 AM CDT. If you want a more comfortable same-day return, try to leave by 4:50 PM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $3.90 one way or $7.80 round trip. Estimated CO2 is about 9.2 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Biloxi and Sunny near Bay Saint Louis.
Stop Ideas Near Gulfport
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 Gulfport.
Gulfport, MS
Biloxi, MS
Picayune
Slidell
Flight Path Map
This map shows the direct air route between Biloxi and Bay Saint Louis. Straight-line distance: 27.19 mi (43.76 km).
#1 Biloxi
The most populous city in Harrison County, Mississippi.
| Population | 46,127 |
| Coordinates | 30.3960300, -88.8853100 |
| Altitude | 6 |
| Country | United States |
#2 Bay Saint Louis
City in Hancock County, Mississippi, United States of America
| Population | 14,529 |
| Coordinates | 30.3088100, -89.3300500 |
| Altitude | 7 |
| Country | United States |
End: Bay Saint Louis (-89.33005, 30.30881)
Estimated Travel Time
Distance: 47 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 00h 58m |
| 40 mph (64.37 km/h) | 00h 43m |
| 50 mph (80.47 km/h) | 00h 34m |
| 60 mph (96.56 km/h) | 00h 29m |
| 70 mph (112.65 km/h) | 00h 24m |
| 80 mph (129 km/h) | 00h 21m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.79 | $3.90 | $7.80 |
| Mid-grade | $4.26 | $4.39 | $8.77 |
| Premium | $4.63 | $4.76 | $9.53 |
| Diesel | $5.42 | $5.58 | $11.15 |
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 Mississippi · Apr 17, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.