Flight
Driving
O'Fallon to Houston
Updated: 28 May 2026
The journey from O'Fallon to Houston covers about 850 miles. Driving via I-55 and I-45 takes approximately 13 hours. You will pass through Memphis and across the piney woods of East Texas. Alternatively, you can fly from St. Louis (STL) to Houston (IAH) in about 2 hours and 15 minutes.
Total Distance: 1,370 km driving distance; 1,150 km straight-line air distance.
Fastest Way
Flying is the fastest, taking just over 2 hours.
Cheapest Way
Driving is the most economical for groups.
Compare O'Fallon to Houston Routes
|
Direct
|
Direct
|
|
|---|---|---|
| Duration | 2 hours 15 mins | 13 hours |
| Avg Price | 200-450 USD | 140-190 USD |
| Operator | United Airlines | Personal Vehicle |
| Route | STL to IAH | I-55 S to I-45 S |
| Tip | United operates a hub at IAH. | Expect heavy traffic entering Houston on I-45. |
Travel Tips
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TrafficHouston traffic is intense; plan your arrival outside peak hours.
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HumidityBe prepared for high humidity, especially in the summer.
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AirportIAH is large; allow extra time for terminal transfers.
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DiningHouston has a world-class food scene; try the Tex-Mex.
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NavigationUse a toll tag if you plan to use the Sam Houston Tollway.
Safety Tips
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FloodingAvoid driving during heavy rainstorms due to flash flood risks.
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HeatStay hydrated and limit outdoor activity during midday in summer.
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DrivingStay alert on the long stretches of I-45.
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EmergencyKeep a roadside assistance contact handy.
People Also Ask
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How long is the drive?The drive takes about 13 hours.
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Is Houston walkable?No, Houston is a car-dependent city.
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Are there tolls?Yes, many Houston highways are toll roads.
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What is the best time to visit?Spring and fall are the most comfortable.
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Is it a safe drive?Yes, the interstate route is safe.
Quick Info
- From O'Fallon, Missouri, United States
- To Houston, Texas, United States
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Modes
Best Time to Travel
February to April or October to November for mild weather.
Things to Do in Houston
1
Space Center Houston
Visit the official visitor center of NASA's Johnson Space Center. It is an iconic experience for space enthusiasts.
2
Museum District
Explore 19 museums within a walkable area. The Museum of Fine Arts is a highlight.
3
Buffalo Bayou Park
Enjoy 160 acres of green space with trails and skyline views. It is perfect for biking.
4
The Galleria
Shop at one of the largest malls in the US. It features an indoor ice rink.
Tags
O'Fallon to Houston
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Missouri to Houston
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