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Salt Lake City

$71+ Cheap flights from St. Louis to Salt Lake City (STL - SLC)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/23. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SLC
Sep 1 — Sep 81
Tue 9/1
Tue 9/8
1 adult, Economy
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Cheapflights Tip: The best prices from Lambert-St Louis to Salt Lake City are usually found in September or January, booked 37 days in advance, depart on a Thursday or Tuesday and return on a Tuesday

Cheap flight deals from St. Louis to Salt Lake City

Cheapest flights from St. Louis to Salt Lake City
Explore the most affordable flight options available from St. Louis to Salt Lake City. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 2, 2026.

This Kiwi.com deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/168:10 pm
STL
-
SLC
1 stop15h 31m
Frontier
Tue 9/224:16 pm
SLC
-
STL
1 stop26h 01m
Frontier
Deal found 7/29$140
This Kiwi.com deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/131:02 pm
STL
-
SLC
1 stop22h 39m
Frontier
Wed 9/2311:40 am
SLC
-
STL
1 stop6h 37m
Frontier
Deal found 7/31$151
This Kiwi.com deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/88:10 pm
STL
-
SLC
1 stop12h 53m
Frontier
Mon 10/129:28 pm
SLC
-
STL
1 stop20h 47m
Frontier
Deal found 7/31$156
This Kiwi.com deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/268:10 pm
STL
-
SLC
1 stop15h 31m
Frontier
Wed 9/308:00 am
SLC
-
STL
1 stop10h 17m
Frontier
Deal found 7/31$158
This Kiwi.com deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/98:10 pm
STL
-
SLC
1 stop15h 31m
Frontier
Sat 9/124:16 pm
SLC
-
STL
1 stop18h 51m
Frontier
Deal found 7/29$159
This Kiwi.com deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/98:10 pm
STL
-
SLC
1 stop15h 31m
Frontier
Mon 9/1411:40 am
SLC
-
STL
1 stop6h 37m
Frontier
Deal found 7/29$160
This Kiwi.com deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/168:10 pm
STL
-
SLC
1 stop20h 11m
Frontier
Wed 9/238:00 am
SLC
-
STL
1 stop10h 17m
Frontier
Deal found 8/1$164
This Kiwi.com deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/218:10 pm
STL
-
SLC
1 stop15h 31m
Frontier
Fri 9/2511:40 am
SLC
-
STL
1 stop6h 37m
Frontier
Deal found 7/30$168
This Kiwi.com deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/67:58 pm
STL
-
SLC
1 stop12h 33m
Frontier
Tue 9/87:08 pm
SLC
-
STL
1 stop23h 09m
Frontier
Deal found 7/29$169
This Kiwi.com deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/218:10 pm
STL
-
SLC
1 stop28h 49m
Frontier
Wed 10/711:40 am
SLC
-
STL
1 stop6h 37m
Frontier
Deal found 7/31$171

Find flight deals from St. Louis to Salt Lake City

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Salt Lake City (SLC). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated August 2, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$140
(Kiwi.com)

One-way from

$71
(Kiwi.com)

Popular in

July

Cheapest in

September

Average price

$446

Good round-trip deal

$301 or less

Good one-way deal

$183 or less
Provider with most accurate pricing for Lambert-St Louis-Salt Lake City flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lambert-St Louis-Salt Lake City flights.
Search Deals
From Lambert-St Louis to Salt Lake City
Search Deals
One-way flight from Lambert-St Louis to Salt Lake City
Search Deals
Highest demand for flights based on searches. 3% potential increase in price ($17 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2026
Search Deals
Price to beat on a round-trip flight from Lambert-St Louis to Salt Lake City.
Search Deals
Price to beat on a one-way flight from Lambert-St Louis to Salt Lake City.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from St. Louis to Salt Lake City that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 2, 2026.
Use the filters below to find and compare flights from St. Louis to Salt Lake City that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisSalt Lake City

STL - SLC

STLSLC

Lambert-St Louis

Fri 9/11

12:17 pm-12:43 pm

1 stop25h 26m

Salt Lake City

Tue 9/15

4:16 pm-7:17 pm

1 stop26h 01m

$276

St. LouisSalt Lake City

STL - SLC

STLSLC

Lambert-St Louis

Fri 9/11

7:36 pm-12:21 pm

1 stop17h 45m

Salt Lake City

Tue 9/15

2:34 pm-5:10 pm

2 stops25h 36m

$303

St. LouisSalt Lake City

STL - SLC

STLSLC

Lambert-St Louis

Mon 10/26

5:25 am-11:55 am

2 stops7h 30m

Salt Lake City

Wed 10/28

8:30 am-5:45 pm

2 stops8h 15m

$379

St. LouisSalt Lake City

STL - SLC

STLSLC

Lambert-St Louis

Sat 9/26

7:00 am-1:35 pm

1 stop7h 35m

Salt Lake City

Fri 10/30

5:30 pm-12:35 am

1 stop6h 05m

$388

St. LouisSalt Lake City

STL - SLC

STLSLC

Lambert-St Louis

Sat 10/17

8:25 am-2:30 pm

2 stops7h 05m

Salt Lake City

Sat 10/24

9:25 am-6:25 pm

2 stops8h 00m

$435

St. LouisSalt Lake City

STL - SLC

STLSLC

Lambert-St Louis

Thu 12/10

5:30 am-11:35 am

1 stop7h 05m

Salt Lake City

Sun 12/13

2:20 pm-12:50 am

2 stops9h 30m

$447
Quickest round-trip

St. LouisSalt Lake City

STL - SLC

STLSLC

Lambert-St Louis

Thu 9/24

2:25 pm-4:38 pm

Nonstop3h 13m

Salt Lake City

Sun 9/27

8:50 pm-12:44 am

Nonstop2h 54m

$449

St. LouisSalt Lake City

STL - SLC

STLSLC

Lambert-St Louis

Fri 9/11

5:00 pm-7:15 pm

Nonstop3h 15m

Salt Lake City

Tue 9/15

1:45 pm-5:37 pm

Nonstop2h 52m

$449

St. LouisSalt Lake City

STL - SLC

STLSLC

Lambert-St Louis

Thu 9/17

6:55 pm-9:10 pm

Nonstop3h 15m

Salt Lake City

Mon 9/28

8:50 pm-12:44 am

Nonstop2h 54m

$449
Cheapest one-way

St. LouisSalt Lake City

STL - SLC

STLSLC

Lambert-St Louis

Tue 9/15

6:29 am-6:56 pm

2 stops13h 27m

$132

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/1

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

Compare providers for flights from St. Louis to Salt Lake City

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Salt Lake City in August.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star
PricelinePrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on St. Louis-Salt Lake City flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Salt Lake City flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Salt Lake City flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on St. Louis-Salt Lake City flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-Salt Lake City flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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

Have a flexible travel schedule? Discover the best time to fly to Salt Lake City from St. Louis with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from St. Louis to Salt Lake City

How far ahead should I book a flight from St. Louis to Salt Lake City?

The price you pay for your flight from St. Louis to Salt Lake City may vary depending on when you book. For the best chance of a lower fare, look to book 36 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from St. Louis to Salt Lake City?

Currently, September is the cheapest month in which you can book a flight from St. Louis to Salt Lake City (average of $399). Flying from St. Louis to Salt Lake City in July is currently the most expensive (average of $508). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from STL to SLC?

Find hourly flight availability from St. Louis to Salt Lake City. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 2, 2026.

When flying from St. Louis to Salt Lake City, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 25% versus a flight in the morning.

What is the cheapest day to fly from St. Louis to Salt Lake City?

Use this chart to determine the cheapest time to fly round-trip from St. Louis to Salt Lake City. Price data was last updated on July 25, 2026.

Travelers seeking maximum savings on their St. Louis to Salt Lake City flight should consider departing on Saturday evenings when fares are most often at their lowest. Monday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

How much does it cost to fly round-trip from St. Louis to Salt Lake City?

Airfare is below average for this route at the moment.

St. Louis to Salt Lake City flights typically cost between $349 and $549 in September.
The cheapest round-trip price found within the last 5 days was $140 on Frontier (Sep 16-Sep 22).

Reviews of airlines servicing Salt Lake City

Get insights into the airlines that provide service to Salt Lake City. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Salt Lake City. Reviews last updated August 2, 2026.
Peruse reviews from past customers who have flown with Southwest,Delta, andUnited Airlines from St. Louis to Salt Lake City to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,230 reviews

Comfort

8.0

Crew

8.6

Entertainment

7.5

Overall

8.0

Boarding

8.1

Food

7.0

Reviews

1 / 20
8.0
Excellent

La Tracimeldamarcos,Jun 2026

LAX - SLC

The second flight was not as comfortable as the first as we had to change planes to what seemed to be a slightly older aircraft. The seats weren’t as comfortable as the other plane. But it wasn’t bad.
Southwest
8.0
Very good
4,230 reviews
Southwest
8.0
Very good
4,230 reviews

Comfort

8.0

Crew

8.6

Entertainment

7.5

Overall

8.0

Boarding

8.1

Food

7.0

Reviews

1 / 20
8.0
Excellent

La Tracimeldamarcos,Jun 2026

LAX - SLC

The second flight was not as comfortable as the first as we had to change planes to what seemed to be a slightly older aircraft. The seats weren’t as comfortable as the other plane. But it wasn’t bad.
Delta
7.8
Good
8,493 reviews
Southwest
8.0
Very good
4,230 reviews

Comfort

8.0

Crew

8.6

Entertainment

7.5

Overall

8.0

Boarding

8.1

Food

7.0

Reviews

1 / 20
8.0
Excellent

La Tracimeldamarcos,Jun 2026

LAX - SLC

The second flight was not as comfortable as the first as we had to change planes to what seemed to be a slightly older aircraft. The seats weren’t as comfortable as the other plane. But it wasn’t bad.
United Airlines
7.4
Good
10,061 reviews
Southwest
8.0
Very good
4,230 reviews

Comfort

8.0

Crew

8.6

Entertainment

7.5

Overall

8.0

Boarding

8.1

Food

7.0

Reviews

1 / 20
8.0
Excellent

La Tracimeldamarcos,Jun 2026

LAX - SLC

The second flight was not as comfortable as the first as we had to change planes to what seemed to be a slightly older aircraft. The seats weren’t as comfortable as the other plane. But it wasn’t bad.
Frontier
5.6
Fair
2,741 reviews
Southwest
8.0
Very good
4,230 reviews

Comfort

8.0

Crew

8.6

Entertainment

7.5

Overall

8.0

Boarding

8.1

Food

7.0

Reviews

1 / 20
8.0
Excellent

La Tracimeldamarcos,Jun 2026

LAX - SLC

The second flight was not as comfortable as the first as we had to change planes to what seemed to be a slightly older aircraft. The seats weren’t as comfortable as the other plane. But it wasn’t bad.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Salt Lake City. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airports do I use to fly from St. Louis to Salt Lake City?

    To fly from St. Louis to Salt Lake City, you need to book a flight from Lambert-St Louis (STL) to Salt Lake City (SLC). Nonstop flights to Salt Lake City from Lambert-St Louis take 3h 07m on average. When it comes time to book airfare, you have a few options: there are 2 outbound flights from Lambert-St Louis to Salt Lake City offered by 4 different airlines.

  • How popular is this St. Louis to Salt Lake City flight route?

    This flight path from Lambert-St Louis to Salt Lake City was viewed by 1 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from St. Louis to Salt Lake City?

    Airlines like Alaska Airlines, Frontier, and Southwest fly from St. Louis to Salt Lake City in about 7h 30m. The time it takes to get you to your destination can typically vary by up to 10h 15m. Airlines will cover a distance of 1153 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from St. Louis to Salt Lake City round-trip?

    Cheapflights users have booked flights from St. Louis to Salt Lake City round-trip from $124. Other airlines that can offer you cheap pricing are United Airlines, from $226, and Southwest, from $337. Frontier is priced at 72% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from St. Louis to Salt Lake City one-way?

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as $78. Users have also found prices from $158 and $268 on Southwest and Delta, respectively.

  • What are the most reliable airlines from St. Louis to Salt Lake City?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from St. Louis to Salt Lake City on time: Korean Air (95%), Delta (87%), KLM (80%).

  • What are the cheapest flights from St. Louis to Salt Lake City?

    On average you can expect to pay $340 for a flight from St. Louis to Salt Lake City. The cheapest flight overall is $148 while the most popular route, (Lambert-St Louis - Salt Lake City) is currently priced at $298.

  • Can I find deals for flights from St. Louis to Salt Lake City that include hotel bookings?

    Yes. In addition to deals on St. Louis to Salt Lake City flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Salt Lake City?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Salt Lake City.

  • Can I find deals for business class flights from St. Louis to Salt Lake City?

    Yes. Cheapflights offers flight deals from St. Louis to Salt Lake City by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from St. Louis to Salt Lake City?

    Currently, September is the cheapest month in which you can book a flight from St. Louis to Salt Lake City (average of $399). Flying from St. Louis to Salt Lake City in July is currently the most expensive (average of $508). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Salt Lake City?

Book flights to Salt Lake City if you plan to visit one of these locations
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Top 4 airlines flying from St. Louis to Salt Lake City

Discover the top 4 airlines that operate flights from St. Louis to Salt Lake City. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 2, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$124Average$244FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$226Average$446FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$337Average$444FlexibilityNo cancel feeOn-time63%
DeltaCheapest$399Average$504FlexibilityNo cancel feeOn-timeN/A

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