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Salt Lake City

$81+ 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 4/6. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SLC
Apr 19 — Apr 261
Sun 4/19
Sun 4/26
1 adult, Economy
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Find cheap flights from St. Louis to Salt Lake City with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

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3. Compare prices and book

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Cheapflights Tip: The best prices from Lambert-St Louis to Salt Lake City are usually found in April or May, booked 37 days in advance, depart on a Wednesday or Tuesday and return on a Thursday

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 March 20, 2026.

This Kiwi.com deal was found by Cheapflights users on 3/20. 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 4/138:19 pm
STL
-
SLC
1 stop15h 55m
Frontier
Wed 5/610:54 pm
SLC
-
STL
1 stop19h 29m
Frontier
Deal found 3/20$169
This Kiwi.com deal was found by Cheapflights users on 3/20. 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 4/88:16 pm
STL
-
SLC
1 stop12h 49m
Frontier
Thu 4/307:35 am
SLC
-
STL
1 stop10h 46m
Frontier
Deal found 3/20$174
This Kiwi.com deal was found by Cheapflights users on 3/20. 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.
Fri 4/178:06 pm
STL
-
SLC
1 stop12h 55m
Frontier
Wed 5/610:54 pm
SLC
-
STL
1 stop19h 29m
Frontier
Deal found 3/20$175
This Frontier deal was found by Cheapflights users on 3/20. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/108:16 pm
STL
-
SLC
1 stop4h 53m
Frontier
Thu 4/307:35 am
SLC
-
STL
1 stop10h 46m
Frontier
Deal found 3/20$180
This Kiwi.com deal was found by Cheapflights users on 3/20. 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 4/138:19 pm
STL
-
SLC
1 stop15h 55m
Frontier
Thu 4/307:35 am
SLC
-
STL
1 stop10h 46m
Frontier
Deal found 3/20$183
This Kiwi.com deal was found by Cheapflights users on 3/20. 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 4/88:16 pm
STL
-
SLC
1 stop12h 49m
Frontier
Mon 4/2712:49 pm
SLC
-
STL
2 stops41h 01m
Frontier
Deal found 3/20$190
This Kiwi.com deal was found by Cheapflights users on 3/20. 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 4/138:19 pm
STL
-
SLC
1 stop15h 55m
Frontier
Thu 5/710:54 pm
SLC
-
STL
1 stop19h 29m
Frontier
Deal found 3/20$192
This Kiwi.com deal was found by Cheapflights users on 3/20. 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 4/188:17 pm
STL
-
SLC
1 stop12h 44m
Frontier
Wed 5/610:54 pm
SLC
-
STL
1 stop19h 29m
Frontier
Deal found 3/20$195
This Kiwi.com deal was found by Cheapflights users on 3/18. 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 5/48:17 pm
STL
-
SLC
1 stop20h 27m
Frontier
Fri 5/810:54 pm
SLC
-
STL
1 stop19h 29m
Frontier
Deal found 3/18$196
This Kiwi.com deal was found by Cheapflights users on 3/20. 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.
Fri 4/178:06 pm
STL
-
SLC
1 stop12h 55m
Frontier
Thu 5/710:54 pm
SLC
-
STL
1 stop19h 29m
Frontier
Deal found 3/20$198
This Kiwi.com deal was found by Cheapflights users on 3/20. 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 4/138:19 pm
STL
-
SLC
1 stop15h 55m
Frontier
Mon 4/2712:49 pm
SLC
-
STL
2 stops41h 01m
Frontier
Deal found 3/20$199
This Expedia deal was found by Cheapflights users on 3/18. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/108:16 pm
STL
-
SLC
1 stop12h 49m
Frontier
Mon 4/131:47 pm
SLC
-
STL
1 stop8h 38m
Frontier
Deal found 3/18$200

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 March 20, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$174
(Kiwi.com)

One-way from

$81
(Kiwi.com)

Popular in

February

Cheapest in

April

Average price

$409

Good round-trip deal

$317 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. 2% potential increase in price ($12 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 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 March 20, 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

Tue 4/14

2:30 pm-8:15 pm

1 stop6h 45m

Salt Lake City

Tue 4/21

3:30 pm-9:45 pm

1 stop5h 15m

$415

St. LouisSalt Lake City

STL - SLC

STLSLC

Lambert-St Louis

Wed 4/22

6:45 pm-9:02 pm

Nonstop3h 17m

Salt Lake City

Sun 4/26

9:35 am-1:23 pm

Nonstop2h 48m

$439

St. LouisSalt Lake City

STL - SLC

STLSLC

Lambert-St Louis

Mon 4/20

3:50 pm-10:40 pm

2 stops7h 50m

Salt Lake City

Fri 4/24

2:15 pm-10:40 pm

2 stops7h 25m

$451
Quickest round-trip

St. LouisSalt Lake City

STL - SLC

STLSLC

Lambert-St Louis

Fri 5/29

7:00 am-9:11 am

Nonstop3h 11m

Salt Lake City

Sun 5/31

9:40 am-1:32 pm

Nonstop2h 52m

$459

St. LouisSalt Lake City

STL - SLC

STLSLC

Lambert-St Louis

Sat 4/11

6:10 am-2:35 pm

2 stops9h 25m

Salt Lake City

Thu 4/16

2:15 pm-10:40 pm

2 stops7h 25m

$461

St. LouisSalt Lake City

STL - SLC

STLSLC

Lambert-St Louis

Wed 5/13

3:11 pm-10:13 pm

1 stop8h 02m

Salt Lake City

Wed 5/20

3:10 pm-7:03 pm

Nonstop2h 53m

$469

St. LouisSalt Lake City

STL - SLC

STLSLC

Lambert-St Louis

Wed 5/13

3:11 pm-10:13 pm

1 stop8h 02m

Salt Lake City

Mon 5/18

5:30 pm-11:21 pm

1 stop4h 51m

$479

St. LouisSalt Lake City

STL - SLC

STLSLC

Lambert-St Louis

Tue 4/14

7:00 am-9:19 am

Nonstop3h 19m

Salt Lake City

Tue 5/5

9:35 am-1:23 pm

Nonstop2h 48m

$489

St. LouisSalt Lake City

STL - SLC

STLSLC

Lambert-St Louis

Thu 5/21

2:27 pm-4:40 pm

Nonstop3h 13m

Salt Lake City

Sun 5/31

5:30 pm-11:21 pm

1 stop4h 51m

$489

St. LouisSalt Lake City

STL - SLC

STLSLC

Lambert-St Louis

Sat 5/23

6:00 am-3:48 pm

2 stops10h 48m

Salt Lake City

Sat 5/30

5:05 am-3:46 pm

2 stops9h 41m

$527

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/18

Showing 1-10 of 23 resultsSorted by cheapest first
1
2
3

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 March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star
CheapOairPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star

*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?

Use this chart to determine the optimal time to book a round-trip flight from St. Louis to Salt Lake City. Price data was last updated on March 13, 2026.

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 37 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, November is the cheapest month in which you can book a flight from St. Louis to Salt Lake City (average of $153). Flying from St. Louis to Salt Lake City in January is currently the most expensive (average of $263). 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 March 20, 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 evening, which can drop the price by up to 27% 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 March 14, 2026.

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

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 March 20, 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
4,324 reviews

Boarding

8.1

Entertainment

7.5

Overall

8.0

Comfort

8.0

Food

7.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Southwest
8.0
Very good
4,324 reviews
Southwest
8.0
Very good
4,324 reviews

Boarding

8.1

Entertainment

7.5

Overall

8.0

Comfort

8.0

Food

7.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Delta
7.9
Good
8,307 reviews
Southwest
8.0
Very good
4,324 reviews

Boarding

8.1

Entertainment

7.5

Overall

8.0

Comfort

8.0

Food

7.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
United Airlines
7.4
Good
9,455 reviews
Southwest
8.0
Very good
4,324 reviews

Boarding

8.1

Entertainment

7.5

Overall

8.0

Comfort

8.0

Food

7.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
American Airlines
7.1
Good
11,486 reviews
Southwest
8.0
Very good
4,324 reviews

Boarding

8.1

Entertainment

7.5

Overall

8.0

Comfort

8.0

Food

7.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Frontier
5.7
Fair
3,024 reviews
Southwest
8.0
Very good
4,324 reviews

Boarding

8.1

Entertainment

7.5

Overall

8.0

Comfort

8.0

Food

7.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

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 11m on average. When it comes time to book airfare, you have a few options: there are 3 outbound flights from Lambert-St Louis to Salt Lake City offered by 5 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 2 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 Southwest and Delta fly from St. Louis to Salt Lake City in about 3h 17m. The time it takes to get you to your destination can typically vary by up to 3h 28m. 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 $105. Other airlines that can offer you cheap pricing are Southwest, from $260, and American Airlines, from $276. Frontier is priced at 75% 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 $175 on Southwest and American Airlines, 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: China Eastern (86%), Delta (80%), Korean Air (80%).

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

    On average you can expect to pay $439 for a flight from St. Louis to Salt Lake City. The cheapest flight overall is $128 while the most popular route, (Lambert-St Louis - Salt Lake City) is currently priced at $266.

  • 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, November is the cheapest month in which you can book a flight from St. Louis to Salt Lake City (average of $153). Flying from St. Louis to Salt Lake City in January is currently the most expensive (average of $263). 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
Bountiful
Lehi
Farmington
West Valley City
Midvale
Logan
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West Jordan
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Layton
Alta
Sandy

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Top 5 airlines flying from St. Louis to Salt Lake City

Discover the top 5 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 March 20, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$105Average$232FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$260Average$413FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$276Average$352FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$345Average$554FlexibilityNo cancel feeOn-time69%
DeltaCheapest$359Average$455FlexibilityNo cancel feeOn-timeN/A

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