How far is Bay Saint Louis, MS from Biloxi, MS?
The driving distance from Bay Saint Louis, MS to Biloxi, MS is about 29 miles (46.7 km), with a travel time of about 00h 44m by car.
- The straight-line flight distance is about 27.2 miles (43.8 km).
- For a round trip, plan for roughly 01h 29m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 7:00 AM to 7:00 PM CDT.
Reverse, save, or send this route
This is an easy same-day return drive. Copy the route link, send it to another device, or print a clean version before you head out.
This is an easy same-day return drive.
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 44m.
This is a short drive, so your comfort window is wide. Traffic and current weather matter more than the clock.
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.
Mostly Sunny
Partly Sunny
Driving Route Map
The map below follows the saved road route between Bay Saint Louis and Biloxi.
Turn-by-Turn Driving Directions
Step-by-step road directions between Bay Saint Louis and Biloxi.
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1
Start on South 2nd Street
1012 ft · 30 sec · South 2nd Street
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2
Turn right onto Main Street
1087 ft · 26 sec · Main Street
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3
At the end of the road, turn left onto North Beach Boulevard
1.1 km · 1 min · North Beach Boulevard
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4
Turn right
27.8 mi · 46 min
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5
Turn left onto Main Street
1233 ft · 40 sec · Main Street
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6
Turn right onto Howard Avenue
28 m · 3 sec · Howard Avenue
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7
Arrive at your destination
0 m · 1 sec · Howard Avenue
Car Route Details
A richer read on the saved driving route between Bay Saint Louis and Biloxi.
Straightforward drive
The saved road route has a manageable number of maneuvers and should be easy to follow with normal attention to signs.
Longest stretch
Turn right
27.8 mi · 00h 46m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A short regional drive
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
Mostly Sunny leaving Bay Saint Louis and Partly Sunny near Biloxi.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Bay Saint Louis to Biloxi?
The road trip is about 29 miles (46.7 km) and usually takes 00h 44m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
What is the halfway point on this route?
Gulfport is a useful midpoint, sitting about 14.5 miles from Bay Saint Louis and 14.5 miles from Biloxi.
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 1.8 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 7:00 AM to 7:00 PM CDT. If you want a more comfortable same-day return, try to leave by 7:00 PM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $3.86 one way or $7.73 round trip. Estimated CO2 is about 9.1 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny around Bay Saint Louis and Partly Sunny near Biloxi.
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 Bay Saint Louis and Biloxi. Straight-line distance: 27.19 mi (43.76 km).
#1 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 |
#2 Biloxi
The most populous city in Harrison County, Mississippi.
| Population | 46,127 |
| Coordinates | 30.3960300, -88.8853100 |
| Altitude | 6 |
| Country | United States |
End: Howard Avenue (-88.885301, 30.396075)
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 | $3.86 | $7.73 |
| Mid-grade | $4.26 | $4.34 | $8.69 |
| Premium | $4.63 | $4.72 | $9.44 |
| Diesel | $5.42 | $5.52 | $11.05 |
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 20, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.