How far is Weldon Spring, MO from Florissant, MO?
The driving distance from Weldon Spring, MO to Florissant, MO is about 24.4 miles (39.2 km), with a travel time of about 00h 29m by car.
- The straight-line flight distance is about 20.4 miles (32.9 km).
- For a round trip, plan for roughly 00h 58m 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 29m.
This is a short drive, so your comfort window is wide. Traffic and current weather matter more than the clock.
This departure sits inside the recommended comfort window for the route.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
A city in St.
Route Weather Snapshot
Check the forecast at both ends before you head out.
Sunny
Sunny
Driving Route Map
The map below follows the saved road route between Weldon Spring and Florissant.
Turn-by-Turn Driving Directions
Step-by-step road directions between Weldon Spring and Florissant.
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1
Start on Old 94 South
45 m · 7 sec · Old 94 South
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2
Continue on Weldon Spring Road
726 ft · 25 sec · Weldon Spring Road
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3
Enter the roundabout and take exit 1 toward Siedentop Road
11 m · 1 sec · Siedentop Road
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4
Exit the roundabout onto Siedentop Road
2653 ft · 1 min · Siedentop Road
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5
Turn left
3 mi · 4 min
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6
Keep slight left to continue on MO 94 East, MO 364 East
4.7 mi · 6 min
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7
Take the exit slight right toward MO 94 East: Saint Charles
2.8 mi · 4 min
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8
Take the exit slight right toward I 70 East
1355 ft · 19 sec
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9
Merge slight left
3.7 mi · 5 min
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10
Take the exit slight right toward I 270: Chicago, Memphis
872 ft · 12 sec
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11
Keep slight left to continue on I 270 North: Chicago
2556 ft · 36 sec
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12
Continue on I 270 North: Chicago
1270 ft · 18 sec
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13
Keep slight left to continue on I 270 North: Chicago
988 ft · 14 sec
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14
Merge slight left
4.2 mi · 5 min
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15
Take the exit slight right toward US 67
1565 ft · 45 sec
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16
Turn left onto North Lindbergh Boulevard
1.8 mi · 3 min · North Lindbergh Boulevard
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17
Turn right onto West Washington Street
1 mi · 2 min · West Washington Street
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18
Turn left onto North New Florissant Road
26 m · 1 sec · North New Florissant Road
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19
Arrive at your destination
0 m · 1 sec · North New Florissant Road
Car Route Details
A richer read on the saved driving route between Weldon Spring and Florissant.
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.
MO 94 East
Keep slight left to continue on MO 94 East, MO 364 East
4.71 mi · 00h 06m
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.
Sunny leaving Weldon Spring and Sunny near Florissant.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Weldon Spring to Florissant?
The road trip is about 24.4 miles (39.2 km) and usually takes 00h 29m 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?
Saint Charles is a useful midpoint, sitting about 11.8 miles from Weldon Spring and 12.6 miles from Florissant.
How much longer is the road route than the straight-line distance?
The direct path is about 20.4 miles (32.9 km), while the road route adds roughly 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 7:00 AM to 7:00 PM CDT. If you want a more comfortable same-day return, try to leave by 7:32 PM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $3.24 one way or $6.49 round trip. Estimated CO2 is about 7.6 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Weldon Spring and Sunny near Florissant.
Stop Ideas Near Saint Charles
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
City Hall Park
Jennings City Hall
Ferguson Finance Director
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Saint Charles.
Kirkwood
Gateway Transportation Center
Alton
Washington
Flight Path Map
This map shows the direct air route between Weldon Spring and Florissant. Straight-line distance: 20.44 mi (32.9 km).
#1 Weldon Spring
City in Saint Charles County, Missouri, United States
| Population | 5,546 |
| Coordinates | 38.7133900, -90.6892900 |
| Altitude | 165 |
| Country | United States |
#2 Florissant
The most populous city in St.
| Population | 50,795 |
| Coordinates | 38.7892200, -90.3226100 |
| Altitude | 175 |
| Country | United States |
End: North New Florissant Road (-90.32261, 38.78922)
Estimated Travel Time
Distance: 39 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 00h 48m |
| 40 mph (64.37 km/h) | 00h 36m |
| 50 mph (80.47 km/h) | 00h 29m |
| 60 mph (96.56 km/h) | 00h 24m |
| 70 mph (112.65 km/h) | 00h 20m |
| 80 mph (129 km/h) | 00h 18m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $3.24 | $6.49 |
| Mid-grade | $4.25 | $3.66 | $7.32 |
| Premium | $4.65 | $4.00 | $8.00 |
| Diesel | $5.30 | $4.56 | $9.12 |
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 Missouri · May 12, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.