How far is San Antonio, TX from Flatonia, TX?
The driving distance from San Antonio, TX to Flatonia, TX is about 88 miles (141.6 km), with a travel time of about 01h 33m by car.
- The straight-line flight distance is about 85.2 miles (137.1 km).
- For a round trip, plan for roughly 03h 06m 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 01h 33m.
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.
Census designated place
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Cloudy
Partly Sunny
Driving Route Map
The map below follows the saved road route between San Antonio and Flatonia.
Turn-by-Turn Driving Directions
Step-by-step road directions between San Antonio and Flatonia.
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1
Start on Dolorosa Street
44 m · 5 sec · Dolorosa Street
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2
Continue on West Market Street
1893 ft · 42 sec · West Market Street
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3
Continue on East Market Street
2143 ft · 46 sec · East Market Street
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4
Turn left
111 m · 13 sec
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5
Turn straight onto East Commerce Street
1.2 km · 1 min · East Commerce Street
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6
Keep slight left to continue on East Commerce Street
2.7 mi · 4 min · East Commerce Street
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7
Turn slight right onto East Houston Street
1349 ft · 31 sec · East Houston Street
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8
Turn left onto Interstate 10 East
583 ft · 12 sec · Interstate 10 East
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9
Take the ramp slight left toward I 10 East, US 90 East
874 ft · 21 sec
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10
Merge slight left onto Jose Lopez Freeway
1.8 mi · 2 min · Jose Lopez Freeway
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11
Continue on 90th Infantry Division Highway
22.2 mi · 23 min · 90th Infantry Division Highway
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12
Continue on I 10 East: Houston, Austin, Waco
58.3 mi · 58 min
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13
Take the exit slight right toward TX 95, FM 609: Flatonia, Smithville
1394 ft · 17 sec
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14
Turn slight right
42 m · 6 sec
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15
Turn slight right onto North Penn Street
2843 ft · 52 sec · North Penn Street
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16
Turn right onto West Main Street North
10 m · 1 sec · West Main Street North
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17
Arrive at your destination
0 m · 1 sec · West Main Street North
Car Route Details
A richer read on the saved driving route between San Antonio and Flatonia.
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 East
Continue on I 10 East: Houston, Austin, Waco
58.3 mi · 00h 58m
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 Cloudy leaving San Antonio and Partly Sunny near Flatonia.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from San Antonio to Flatonia?
The road trip is about 88 miles (141.6 km) and usually takes 01h 33m 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?
Kingsbury is a useful midpoint, sitting about 43.9 miles from San Antonio and 44.1 miles from Flatonia.
How much longer is the road route than the straight-line distance?
The direct path is about 85.2 miles (137.1 km), while the road route adds roughly 2.8 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 8:00 AM to 10:00 AM CDT. If you want a more comfortable same-day return, try to leave by 3:24 PM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $11.71 one way or $23.43 round trip. Estimated CO2 is about 27.5 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Cloudy around San Antonio and Partly Sunny near Flatonia.
Stop Ideas Near Kingsbury
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 Kingsbury.
San Marcos Station
San Antonio Station
Austin
Taylor
Flight Path Map
This map shows the direct air route between San Antonio and Flatonia. Straight-line distance: 85.21 mi (137.14 km).
#1 San Antonio
The seventh most populous city in the United States and the center of the San Antonio metropolitan area.
| Population | 1,567,118 |
| Coordinates | 29.4241200, -98.4936300 |
| Altitude | 198 |
| Country | United States |
#2 Flatonia
Town in Fayette County, Texas, United States
| Population | 1,453 |
| Coordinates | 29.6877300, -97.1086000 |
| Altitude | 139 |
| Country | United States |
End: Flatonia (-97.1086, 29.68773)
Estimated Travel Time
Distance: 142 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 02h 55m |
| 40 mph (64.37 km/h) | 02h 11m |
| 50 mph (80.47 km/h) | 01h 45m |
| 60 mph (96.56 km/h) | 01h 27m |
| 70 mph (112.65 km/h) | 01h 15m |
| 80 mph (129 km/h) | 01h 05m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.78 | $11.71 | $23.43 |
| Mid-grade | $4.25 | $13.18 | $26.36 |
| Premium | $4.59 | $14.23 | $28.46 |
| Diesel | $3.99 | $12.38 | $24.76 |
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 Texas · Apr 23, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.