$94 Cheap Flights from St. Louis (STL) to Salt Lake City (SLC)

View $94 flight on Sat, Apr 26, 2025Opens in a new window

Popular airlines from St. Louis Lambert Intl. Airport (STL) to Salt Lake City International Airport (SLC)

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Find available prices by choosing your travel dates.

Cheap Flights from St. Louis to Salt Lake City (STL-SLC)

Prices were available within the past 7 days and start at $94 for one-way flights and $198 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Sat, May 10 - Mon, May 19
STL
St. Louis
SLC
Salt Lake City
$198 Roundtrip, found 8 hours ago
$198
Roundtrip
found 8 hours ago
Select Frontier Airlines flight, departing Sat, May 10 from St. Louis to Salt Lake City, returning Mon, May 19, priced at $198 found 8 hours ago
Frontier Airlines
Sun, May 11 - Tue, May 13
STL
St. Louis
SLC
Salt Lake City
$200 Roundtrip, found 2 days ago
$200
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Sun, May 11 from St. Louis to Salt Lake City, returning Tue, May 13, priced at $200 found 2 days ago
Frontier Airlines
Sat, Apr 26 - Tue, Apr 29
STL
St. Louis
SLC
Salt Lake City
$208 Roundtrip, found 3 hours ago
$208
Roundtrip
found 3 hours ago
Select Frontier Airlines flight, departing Sat, Apr 26 from St. Louis to Salt Lake City, returning Tue, Apr 29, priced at $208 found 3 hours ago
Frontier Airlines
Sat, May 10 - Mon, May 19
STL
St. Louis
SLC
Salt Lake City
$210 Roundtrip, found 4 hours ago
$210
Roundtrip
found 4 hours ago
Select Frontier Airlines flight, departing Sat, May 10 from St. Louis to Salt Lake City, returning Mon, May 19, priced at $210 found 4 hours ago
Frontier Airlines
Sat, Apr 26 - Fri, May 2
STL
St. Louis
SLC
Salt Lake City
$218 Roundtrip, found 3 hours ago
$218
Roundtrip
found 3 hours ago
Select Frontier Airlines flight, departing Sat, Apr 26 from St. Louis to Salt Lake City, returning Fri, May 2, priced at $218 found 3 hours ago
Frontier Airlines
Fri, May 9 - Mon, May 19
STL
St. Louis
SLC
Salt Lake City
$220 Roundtrip, found 4 hours ago
$220
Roundtrip
found 4 hours ago
Select Frontier Airlines flight, departing Fri, May 9 from St. Louis to Salt Lake City, returning Mon, May 19, priced at $220 found 4 hours ago
American Airlines
Thu, May 15 - Mon, May 19
STL
St. Louis
SLC
Salt Lake City
$280 Roundtrip, found 13 hours ago
$280
Roundtrip
found 13 hours ago
Select American Airlines flight, departing Thu, May 15 from St. Louis to Salt Lake City, returning Mon, May 19, priced at $280 found 13 hours ago
Hawaiian Airlines
Tue, May 13 - Wed, May 14
STL
St. Louis
SLC
Salt Lake City
$312 Roundtrip, found 2 days ago
$312
Roundtrip
found 2 days ago
Select Hawaiian Airlines flight, departing Tue, May 13 from St. Louis to Salt Lake City, returning Wed, May 14, priced at $312 found 2 days ago
Southwest Airlines
Sat, May 24 - Tue, May 27
STL
St. Louis
SLC
Salt Lake City
$313 Roundtrip, found 3 days ago
$313
Roundtrip
found 3 days ago
Select Southwest Airlines flight, departing Sat, May 24 from St. Louis to Salt Lake City, returning Tue, May 27, priced at $313 found 3 days ago
United
Sat, May 24 - Sun, May 25
STL
St. Louis
SLC
Salt Lake City
$313 Roundtrip, found 2 days ago
$313
Roundtrip
found 2 days ago
Select United flight, departing Sat, May 24 from St. Louis to Salt Lake City, returning Sun, May 25, priced at $313 found 2 days ago
Flights from St. Louis (STL) to Salt Lake City (SLC)
Origin airport
Lambert-St. Louis Intl.
Destination airport
Salt Lake City Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Hawaiian Airlines, Southwest Airlines, United
Roundtrip price
$198
Distance
1153 mi

St. Louis to Salt Lake City Flights

The cheapest times to fly from St. Louis to Salt Lake City

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from St. Louis to Salt Lake City are during the month of May. You can find some of the cheapest flights from St. Louis to Salt Lake City with Expedia's search tool and vast selection of airlines.

The best time to book a flight from St. Louis to Salt Lake City

Sunday is one of the best days to book for cheap flights from St. Louis to Salt Lake City: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

How to find cheap round-trip tickets from St. Louis to Salt Lake City

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from St. Louis to Salt Lake City in 2025. You can also book with separate airlines for your outbound and return journeys, from $94 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap St. Louis to Salt Lake City flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

You could also save big by booking one of Expedia's vacation packages. Bundling together your St. Louis to Salt Lake City airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

*Terms apply.

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

Frequently asked questions

How much does a flight from Lambert-St. Louis Intl. Airport (STL) to Salt Lake City Intl. Airport (SLC) cost?
You’ll find cheap return flights from Lambert-St. Louis Intl. Airport (STL) to Salt Lake City Intl. Airport (SLC) starting at $359. Grab a seat and get ready for takeoff. This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a Delta flight leaving STL on May 21 2025 and touching down at SLC. The price was last updated on April 24 2025 and has not changed since.
What is the cheapest month to fly from STL to SLC?
The cheapest flights from STL to SLC are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from Lambert-St. Louis Intl. Airport (STL) to Salt Lake City Intl. Airport (SLC)?
When setting off from Lambert-St. Louis Intl. Airport (STL), you can jump on a nonstop flight to Salt Lake City Intl. Airport (SLC) with Delta Air Lines.
What is the cheapest airline that flies from STL to SLC?
Currently, the cheapest airline operating one-way flights from STL to SLC is Southwest Airlines. You can take off on this route from $180. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from STL on June 7 2025. Prices were last updated on April 24 2025 and have not changed since.
How many flights per day from Lambert-St. Louis Intl. Airport (STL) to Salt Lake City Intl. Airport (SLC)?
When jetting out of Lambert-St. Louis Intl. Airport (STL), you can pick from an average of 2 daily nonstop flights to Salt Lake City Intl. Airport (SLC).
What are the most popular departure times for flights from Lambert-St. Louis Intl. Airport (STL) to Salt Lake City Intl. Airport (SLC)?
The 7 AM departures from STL to SLC see the highest demand. Greater demand means you’ll likely pay more for these departures. If you want to save on your trip, choose a less crowded time to fly.
What day of the week has the most flights from STL to SLC?
If you fly on a Friday, you’ll get the greatest range of options for flights from Lambert-St. Louis Intl. Airport (STL) to Salt Lake City Intl. Airport (SLC).
What is the earliest flight from Lambert-St. Louis Intl. Airport (STL) to Salt Lake City Intl. Airport (SLC)?
Lambert-St. Louis Intl. Airport (STL)’s first flight to Salt Lake City Intl. Airport (SLC) departs at approximately 7:40AM UTC-6. With a flight time of 3h 33m, you’ll touch down at around 10:13AM UTC-7.
How long does it take to fly from Lambert-St. Louis Intl. Airport (STL) to Salt Lake City Intl. Airport (SLC)?
The average flight time from STL to SLC is 3 hours and 31 minutes, covering a distance of 1,150 mi.
What airline has the least delays from STL to SLC?
Southwest Airlines has the strongest track record for on-time direct flights from Lambert-St. Louis Intl. Airport (STL) to Salt Lake City Intl. Airport (SLC), with an on-time score of 100%. Use the Expedia App to see your journey status before you head off and receive notifications about any trip changes.
What is the best time to fly from Lambert-St. Louis Intl. Airport (STL) to Salt Lake City Intl. Airport (SLC)?
Book a flight from Lambert-St. Louis Intl. Airport (STL) to Salt Lake City Intl. Airport (SLC) that takes off before 3 PM to reduce the risk of delays and cancellations. Departures after this time are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.
What airports do you fly into for Salt Lake City from Lambert-St. Louis Intl. Airport (STL)?
If you’ve booked a direct flight from Lambert-St. Louis Intl. Airport (STL) to Salt Lake City, Salt Lake City Intl. Airport (SLC) is the only airport you can land at.
Is it cheaper to buy a plane ticket from Lambert-St. Louis Intl. Airport (STL) to Salt Lake City Intl. Airport (SLC) last-minute?
Booking your plane ticket from STL to SLC just before your getaway is usually more expensive. But if you’re flexible with your departure times and dates, you could bag a cheap last-minute fare.
Is it cheaper to book a STL to SLC flight and hotel package?
Compared with arranging hotels and flights separately, booking a STL to SLC flight and hotel package with Expedia could lead to significant savings. Better still, having everything in one place takes the hassle out of planning your trip. Just secure your flights and select from our extensive range of hotels, then personalize your trip with other add-ons like tours, car rentals and activities.
Can I cancel or change the date of my flight from Lambert-St. Louis Intl. Airport (STL) to Salt Lake City Intl. Airport (SLC)?
It’s generally possible to cancel or reschedule your STL to SLC flight. However, if it’s been more than 24 hours since booking, additional charges may apply. Check your airline’s policies in your itinerary to see what changes are allowed and if any costs are involved. You’ll also find more details on our Customer Service portal.

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*Available to One Key members.