Like any major city, stick to well-populated areas and use common sense.

What is the main airport?

St. Louis Lambert International Airport (STL) is the primary hub.

Yes, but it is a very long journey with multiple transfers.

Amtrak serves St. Louis via the Texas Eagle and Lincoln Service lines.

How long is the flight?

Total travel time including layovers is usually 5 to 8 hours.

Great Falls

St. Louis

Flight Driving

Great Falls to St. Louis

Updated: 31 May 2026

The journey from Great Falls to St. Louis covers approximately 1,500 miles. Flying is the most efficient method, typically requiring a connection in a major hub like Denver or Chicago. If you choose to drive, you will follow I-90 E and I-70 E, a trip that takes roughly 22 hours of driving time. This route takes you through the heart of the Midwest, offering a mix of mountain scenery and flat plains. Plan your trip to account for the significant distance and potential weather variations.

Total Distance: 2,400 km driving distance; 2,000 km air distance.

Fastest Way

Flying is the fastest, with total travel time around 5.5 hours.

Cheapest Way

Driving is the most cost-effective for groups.

Compare Great Falls to St. Louis Routes

	Flight Connecting	Driving Direct
Duration	5 hours 30 mins	22 hours
Avg Price	$350 - $650	$380 - $580 in fuel
Operator	Southwest Airlines	Personal Vehicle
Route	GTF to STL via DEN or MDW.	I-90 E to I-70 E through the Midwest.
Tip	Southwest offers flexible booking options for this route.	Be prepared for construction delays on I-70.

Travel Tips

Airport Transit
The STL airport is connected to downtown via the MetroLink light rail system.
Booking
Book your flights at least 3 weeks in advance for better pricing.
Rest Stops
Plan your stops in major cities to ensure access to quality food and fuel.
Time Management
Account for the two-hour time difference when scheduling your arrival.
Navigation
Use a GPS with real-time traffic updates to navigate St. Louis's highway system.

Safety Tips

Tire Safety
Check your tire tread before a long drive, especially if crossing the plains.
Wildlife
Be vigilant for deer on the road, especially at dawn and dusk in rural areas.
Emergency Supplies
Carry a portable charger and a physical map in case of GPS failure.
Driver Fatigue
Take breaks every 3 hours to stay alert on the long interstate stretches.