O'Fallon
O'Fallon
Salt Lake City
Salt Lake City
Flight Driving

O'Fallon to Salt Lake City

Updated: 28 May 2026

The journey from O'Fallon to Salt Lake City covers approximately 1,200 miles. You can fly from St. Louis Lambert (STL) to Salt Lake City International (SLC) in about 3 hours. Driving involves taking I-70 West to I-80 West, crossing the Rockies and the high desert. This is a scenic route that takes you through the heart of the American West.

Total Distance: 1,931 km driving, 1,600 km air distance.
Fastest Way
A direct flight from STL to SLC takes 3 hours, saving you over 17 hours of travel time.
Cheapest Way
Flying is often the most economical option when considering the high cost of fuel and overnight stays for a 20-hour drive.
Compare O'Fallon to Salt Lake City Routes
Flight
Direct
Driving
Direct
Duration 3 hours 20 hours
Avg Price $180 - $550 $300 - $450 in fuel
Operator Delta Air Lines Personal Vehicle
Route STL to SLC I-70 W to I-80 W
Tip SLC is well-connected to downtown Salt Lake City via the TRAX light rail system. Be prepared for snow on mountain passes in the Rockies during winter months.
Travel Tips
  • Public Transit
    Use the TRAX light rail system to navigate the city; it is the fastest and most efficient way to travel.
  • Walking
    Salt Lake City is a growing city; some areas are walkable, but a car is often helpful for exploring.
  • Reservations
    Book popular restaurants and attractions like the Temple Square tours well in advance.
  • Weather
    Salt Lake City can be very hot in the summer and cold in the winter; pack accordingly.
  • Safety
    Be aware of your surroundings, especially in areas outside of the main tourist zones at night.
Safety Tips
  • Neighborhoods
    Be aware of your surroundings, especially in areas outside of the main tourist zones at night.
  • Emergency
    Keep a list of local emergency numbers and a physical map in your car for driving in the city.
  • Pedestrian Safety
    Be cautious when walking in busy areas; always use crosswalks and obey traffic signals.
  • Traffic
    Salt Lake City traffic is notoriously bad; use public transit whenever possible to avoid the stress of driving.
People Also Ask
  • Is there a train to Salt Lake City?
    Amtrak's California Zephyr runs through Salt Lake City, but you must get to a hub first.
  • What is the best airport?
    SLC is the primary international airport and is very close to downtown.
  • How long is the drive?
    It takes about 20 hours of driving time, usually split over two days.
  • Do I need a car?
    Yes, Salt Lake City is a car-centric city and public transit does not cover all areas.
  • Is the drive safe?
    Yes, the route is well-traveled, but be prepared for mountain passes and potential winter weather.
Quick Info
  • From O'Fallon, Missouri, United States
  • To Salt Lake City, Utah, United States
  • Modes
Best Time to Travel

May to September for the most comfortable weather and the best outdoor activity conditions.

Things to Do in Salt Lake City
1
Temple Square
Explore this historic site featuring the Salt Lake Temple, the Tabernacle, and beautiful gardens.
2
Great Salt Lake
Visit this unique natural wonder for swimming, bird watching, and stunning sunset views.
3
Natural History Museum of Utah
Discover interactive exhibits on the natural history and geology of Utah in this world-class museum.
4
Utah State Capitol
Tour the historic Capitol building and learn about the history and government of Utah.
Tags
O'Fallon to Salt Lake City flights to SLC driving to Utah from Missouri STL to SLC best way to travel to Salt Lake City road trip Missouri to Utah Salt Lake City travel tips O'Fallon travel guide