Flight
Driving
Gaithersburg to St. Louis
Updated: 28 May 2026
The journey from Gaithersburg to St. Louis is about 1,500 kilometers. Driving via I-70 takes roughly 14 hours. Alternatively, you can fly from Dulles International Airport (IAD) to St. Louis Lambert International Airport (STL) in about 4 hours with a connection. This route takes you through the heart of the Midwest. St. Louis is famous for the Gateway Arch and its rich history as the 'Gateway to the West.'
Total Distance: 1,500 km driving distance; 1,300 km straight-line air distance.
Fastest Way
Flying is the fastest, taking only 4 hours.
Cheapest Way
Driving is the most cost-effective for groups.
Compare Gaithersburg to St. Louis Routes
|
Connecting
|
Direct
|
|
|---|---|---|
| Duration | 4 hours | 14 hours |
| Avg Price | $200 - $400 | $150 - $250 in fuel |
| Operator | Southwest Airlines | Personal Vehicle |
| Route | IAD to STL. | I-270 N to I-70 W. |
| Tip | Connecting flights are common; book early for better prices. | I-70 is a direct route but can be monotonous; take breaks. |
Travel Tips
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DrivingSt. Louis is best explored by car. Parking is generally available.
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DiningTry St. Louis-style pizza and toasted ravioli. They are local favorites.
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SafetyStick to well-populated areas. Use common sense at night.
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WeatherSummers are hot and humid. Pack light clothing.
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ConnectivityMost hotels and public spaces offer free Wi-Fi.
Safety Tips
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DrivingBe cautious of traffic in the city center.
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WalkingStay in well-lit areas. Avoid walking alone at night.
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EmergencyKeep emergency numbers saved in your phone.
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NavigationUse GPS to navigate the city's streets.
People Also Ask
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Is St. Louis safe?Yes, major tourist areas are safe.
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How long is the flight?The flight time is approximately 4 hours with a connection.
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What is the best way to get around?A car is the most convenient way to explore.
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Are there tolls?There are no major tolls on this route.
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What is the best time to visit?Spring and fall are the best times.
Quick Info
- From Gaithersburg, Maryland, United States
- To St. Louis, Missouri, United States
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Modes
Best Time to Travel
April to June or September to October for mild weather.
Things to Do in St. Louis
1
Gateway Arch
Visit the iconic monument. You can take a tram to the top for great views.
2
Forest Park
Explore this massive park, which houses the zoo, art museum, and science center.
3
City Museum
Experience this unique, interactive museum built from repurposed materials.
4
Anheuser-Busch Brewery
Take a tour of the historic brewery. It is a St. Louis landmark.
Tags
Gaithersburg to St. Louis travel
driving to St. Louis from Maryland
flights from IAD to STL
best way to reach St. Louis
I-70 route
St. Louis travel guide
Maryland to Missouri road trip
St. Louis transport tips
