$117 Cheap Flights from Salt Lake City (SLC) to St. Louis (STL)

View $117 flight on Sat, Nov 8, 2025Opens in a new window

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

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

Prices were available within the past 7 days and start at $117 for one-way flights and $223 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Southwest Airlines
Thu, Aug 28 - Tue, Sep 2
SLC
Salt Lake City
STL
St. Louis
$223 Roundtrip, found 14 hours ago
$223
Roundtrip
found 14 hours ago
Select Southwest Airlines flight, departing Thu, Aug 28 from Salt Lake City to St. Louis, returning Tue, Sep 2, priced at $223 found 14 hours ago
Frontier Airlines
Tue, Sep 2 - Wed, Sep 10
SLC
Salt Lake City
STL
St. Louis
$223 Roundtrip, found 3 days ago
$223
Roundtrip
found 3 days ago
Select Frontier Airlines flight, departing Tue, Sep 2 from Salt Lake City to St. Louis, returning Wed, Sep 10, priced at $223 found 3 days ago
Frontier Airlines
Mon, Oct 13 - Tue, Nov 4
SLC
Salt Lake City
STL
St. Louis
$225 Roundtrip, found 4 days ago
$225
Roundtrip
found 4 days ago
Select Frontier Airlines flight, departing Mon, Oct 13 from Salt Lake City to St. Louis, returning Tue, Nov 4, priced at $225 found 4 days ago
Frontier Airlines
Tue, Sep 2 - Thu, Sep 11
SLC
Salt Lake City
STL
St. Louis
$228 Roundtrip, found 3 days ago
$228
Roundtrip
found 3 days ago
Select Frontier Airlines flight, departing Tue, Sep 2 from Salt Lake City to St. Louis, returning Thu, Sep 11, priced at $228 found 3 days ago
Frontier Airlines
Mon, Oct 13 - Thu, Oct 30
SLC
Salt Lake City
STL
St. Louis
$230 Roundtrip, found 4 days ago
$230
Roundtrip
found 4 days ago
Select Frontier Airlines flight, departing Mon, Oct 13 from Salt Lake City to St. Louis, returning Thu, Oct 30, priced at $230 found 4 days ago
Frontier Airlines
Mon, Aug 25 - Tue, Sep 2
SLC
Salt Lake City
STL
St. Louis
$231 Roundtrip, found 5 days ago
$231
Roundtrip
found 5 days ago
Select Frontier Airlines flight, departing Mon, Aug 25 from Salt Lake City to St. Louis, returning Tue, Sep 2, priced at $231 found 5 days ago
Frontier Airlines
Fri, Aug 15 - Tue, Sep 2
SLC
Salt Lake City
STL
St. Louis
$234 Roundtrip, found 3 days ago
$234
Roundtrip
found 3 days ago
Select Frontier Airlines flight, departing Fri, Aug 15 from Salt Lake City to St. Louis, returning Tue, Sep 2, priced at $234 found 3 days ago
Spirit Airlines
Wed, Sep 3 - Sun, Sep 21
SLC
Salt Lake City
STL
St. Louis
$249 Roundtrip, found 2 days ago
$249
Roundtrip
found 2 days ago
Select Spirit Airlines flight, departing Wed, Sep 3 from Salt Lake City to St. Louis, returning Sun, Sep 21, priced at $249 found 2 days ago
United
Mon, Sep 29 - Mon, Oct 6
SLC
Salt Lake City
STL
St. Louis
$313 Roundtrip, found 2 hours ago
$313
Roundtrip
found 2 hours ago
Select United flight, departing Mon, Sep 29 from Salt Lake City to St. Louis, returning Mon, Oct 6, priced at $313 found 2 hours ago
American Airlines
Mon, Sep 29 - Mon, Oct 6
SLC
Salt Lake City
STL
St. Louis
$313 Roundtrip, found 2 hours ago
$313
Roundtrip
found 2 hours ago
Select American Airlines flight, departing Mon, Sep 29 from Salt Lake City to St. Louis, returning Mon, Oct 6, priced at $313 found 2 hours ago

Find the cheapest month to fly from Salt Lake City (SLC) to St. Louis (STL)

October is typically the cheapest month to fly

From $110 - $359 per traveler.

Graph displaying average flight prices per month

Alternative airports near St. Louis

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Lambert-St. Louis Intl. STL. Cheapest option available. Average driving time to city center is 20 minutes. Flights from $336
STL
Lambert-St. Louis Intl.
Cheapest
Average driving time to city center20 min
Flights from $336
Flights from Salt Lake City (SLC) to St. Louis (STL)
Origin airport
Salt Lake City Intl.
Destination airport
Lambert-St. Louis Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Hawaiian Airlines, Southwest Airlines, United
Roundtrip price
$223
Distance
1153 mi
Average flight time
4 hours 36 mins

Salt Lake City to St. Louis Flights

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

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 Salt Lake City to St. Louis are during the month of August. You can find some of the cheapest flights from Salt Lake City to St. Louis with Expedia's search tool and vast selection of airlines.

 

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

Sunday is one of the best days to book for cheap flights from Salt Lake City to St. Louis: 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 Salt Lake City to St. Louis

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 Salt Lake City to St. Louis in 2025. You can also book with separate airlines for your outbound and return journeys, from $117 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 Salt Lake City to St. Louis 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 Salt Lake City to St. Louis 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 Salt Lake City Intl. Airport (SLC) to Lambert-St. Louis Intl. Airport (STL) cost?
Snag cheap return tickets starting from $399 from Salt Lake City Intl. Airport (SLC) to Lambert-St. Louis Intl. Airport (STL). 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 SLC on August 15 2025 and touching down at STL. The price was last updated on July 19 2025 and has not changed since.
What is the cheapest month to fly from SLC to STL?
The cheapest flights from SLC to STL 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 Salt Lake City Intl. Airport (SLC) to Lambert-St. Louis Intl. Airport (STL)?
Board a nonstop flight with Delta Air Lines and fly straight from Salt Lake City Intl. Airport (SLC) to Lambert-St. Louis Intl. Airport (STL).
What is the cheapest airline that flies from SLC to STL?
With fares starting at $249 for a one-way journey from SLC to STL, Delta is currently the cheapest airline flying this route. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from SLC on October 11 2025. Prices were last updated on July 19 2025 and have not changed since.
How many flights per day from Salt Lake City Intl. Airport (SLC) to Lambert-St. Louis Intl. Airport (STL)?
With an average of 2 nonstop flights departing from Salt Lake City Intl. Airport (SLC) to Lambert-St. Louis Intl. Airport (STL) each day, you'll be up in the air in no time.
What are the most popular departure times for flights from Salt Lake City Intl. Airport (SLC) to Lambert-St. Louis Intl. Airport (STL)?
The 5 PM departures from SLC to STL are typically the busiest. These flights can come with a higher price due to their popularity. If you want to save money, choose a less crowded time to fly.
What day of the week has the most flights from SLC to STL?
Depart on a Friday if you're searching for the best selection of flights from Salt Lake City Intl. Airport (SLC) to Lambert-St. Louis Intl. Airport (STL).
What is the earliest flight from Salt Lake City Intl. Airport (SLC) to Lambert-St. Louis Intl. Airport (STL)?
Salt Lake City Intl. Airport (SLC)'s first flight to Lambert-St. Louis Intl. Airport (STL) leaves at approximately 9:25AM UTC-7. With a travel duration of 2h 53m, you'll touch down at around 1:18PM UTC-6.
How long does it take to fly from Salt Lake City Intl. Airport (SLC) to Lambert-St. Louis Intl. Airport (STL)?
It takes approximately 2 hours and 49 minutes to travel the 1,150 mi from SLC to STL.
What airline has the least delays from SLC to STL?
Southwest Airlines has the best performance for on-time direct flights from Salt Lake City Intl. Airport (SLC) to Lambert-St. Louis Intl. Airport (STL), with an on-time rating of 100%. Use the Expedia App to check your flight status before you take off and get immediate updates about any changes.
What is the best time to fly from Salt Lake City Intl. Airport (SLC) to Lambert-St. Louis Intl. Airport (STL)?
Opt for a flight from Salt Lake City Intl. Airport (SLC) to Lambert-St. Louis Intl. Airport (STL) that leaves before 3 PM to reduce the likelihood of delays and cancellations. Departures later than this have a 22% higher chance of being canceled, on average.**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 St. Louis from Salt Lake City Intl. Airport (SLC)?
Check out your flight options from Salt Lake City Intl. Airport (SLC) to Lambert-St. Louis Intl. Airport (STL). This is the only St. Louis airport you can land at if you're taking a direct flight.
Is it cheaper to buy a plane ticket from Salt Lake City Intl. Airport (SLC) to Lambert-St. Louis Intl. Airport (STL) last-minute?
Holding off until just before your trip to book a flight from SLC to STL generally means paying more. While you may find some last-minute discounts, there's no guarantee. Keep your travel schedule open to boost your chances of scoring a bargain.
Is it cheaper to book a SLC to STL flight and hotel package?
Compared with arranging hotels and flights separately, booking a SLC to STL flight and hotel package with Expedia could result in significant savings. Better still, having everything in one easy place will take the hassle out of planning your trip. Just pick your flights and select from our wide range of stays, then tailor your trip with extras like activities and car rentals.
Can I cancel or change the date of my flight from Salt Lake City Intl. Airport (SLC) to Lambert-St. Louis Intl. Airport (STL)?
Typically, you're able to reschedule or cancel your SLC to STL flight. However, there may be additional charges, especially if your booking was made more than 24 hours ago. Check your itinerary for the airline's policies and fees on flight changes, or if you'd like more details, go to our Customer Service portal.

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