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St. Louis

$59+ Cheap flights from Salt Lake City to St. Louis (SLC - STL)

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 10/16. Fares are subject to change and may not be available on all flights or dates of travel.
SLC — STL
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheapflights Tip: The best prices from Salt Lake City to Lambert-St Louis are usually found in August or February, booked 73 days in advance, depart on a Friday or Thursday and return on a Tuesday

Cheap flight deals from Salt Lake City to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Salt Lake City (SLC) to St. Louis (STL). 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 September 11, 2025.

Round-trip from

$128
(Kiwi.com)

One-way from

$59
(Trip.com)

Popular in

December

Cheapest in

August

Average price

$434

Good round-trip deal

$419 or less

Good one-way deal

$398 or less
From Salt Lake City to Lambert-St Louis
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One-way flight from Salt Lake City to Lambert-St Louis
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Highest demand for flights based on searches. 9% potential increase in price ($41 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Salt Lake City to Lambert-St Louis.
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Price to beat on a one-way flight from Salt Lake City to Lambert-St Louis.
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Find flight deals from Salt Lake City to St. Louis

Cheapest flights from Salt Lake City to St. Louis
Explore the most affordable flight options available from Salt Lake City to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This Kiwi.com deal was found by Cheapflights users on 9/10. 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.
Tue 10/2812:35 pmSLC - STL
1 stop19h 32mFrontier
Sat 11/87:45 pmSTL - SLC
1 stop12h 47mFrontier
Deal found 9/10$128
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 11/28:10 pmSLC - STL
1 stop11h 57mFrontier
Sat 11/87:45 pmSTL - SLC
1 stop12h 47mFrontier
Deal found 9/10$131
This Kiwi.com deal was found by Cheapflights users on 9/11. 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 11/94:50 pmSLC - STL
1 stop15h 17mFrontier
Wed 11/127:45 pmSTL - SLC
1 stop12h 47mFrontier
Deal found 9/11$135
This Kiwi.com deal was found by Cheapflights users on 9/11. 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 10/29:45 pmSLC - STL
1 stop10h 21mFrontier
Sun 10/57:55 pmSTL - SLC
1 stop12h 37mFrontier
Deal found 9/11$147
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 9/248:45 amSLC - STL
1 stop23h 21mFrontier
Wed 10/298:40 pmSTL - SLC
1 stop15h 55mFrontier
Deal found 9/10$149
This Frontier deal was found by Cheapflights users on 9/10. 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.
Mon 9/229:45 pmSLC - STL
1 stop10h 21mFrontier
Fri 9/262:38 pmSTL - SLC
1 stop6h 09mFrontier
Deal found 9/10$154
This Kiwi.com deal was found by Cheapflights users on 9/9. 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.
Tue 9/231:42 pmSLC - STL
1 stop18h 24mFrontier
Sat 9/277:55 pmSTL - SLC
1 stop12h 37mFrontier
Deal found 9/9$155
This Kiwi.com deal was found by Cheapflights users on 9/9. 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.
Tue 10/1412:30 pmSLC - STL
1 stop19h 37mFrontier
Fri 10/1710:59 pmSTL - SLC
1 stop13h 46mFrontier
Deal found 9/9$157
This Trip.com deal was found by Cheapflights users on 9/11. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/68:10 pmSLC - STL
1 stop11h 57mFrontier
Sun 11/912:10 pmSTL - SLC
1 stop6h 00mFrontier
Deal found 9/11$158
This Trip.com deal was found by Cheapflights users on 9/11. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/238:45 amSLC - STL
1 stop23h 21mFrontier
Wed 9/247:55 pmSTL - SLC
1 stop19h 30mFrontier
Deal found 9/11$162
This Kiwi.com deal was found by Cheapflights users on 9/9. 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 9/209:58 pmSLC - STL
1 stop10h 08mFrontier
Thu 9/257:55 pmSTL - SLC
1 stop12h 37mFrontier
Deal found 9/9$163

Cheapflights Fare Finder

 
Customize your flight search to find flights from Salt Lake City to St. Louis 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 September 11, 2025.
Use the filters below to find and compare flights from Salt Lake City to St. Louis that are best for you.

Fly from

Salt Lake City

Fly to

St. Louis

Route

Depart

Return

Price

Salt Lake CitySt. Louis

SLC - STL

SLCSTL

Salt Lake City

Mon 9/22

9:45 pm-9:06 am

1 stop10h 21m

Lambert-St Louis

Thu 9/25

7:55 pm-7:32 am

1 stop12h 37m

$163

Salt Lake CitySt. Louis

SLC - STL

SLCSTL

Salt Lake City

Wed 9/24

1:42 pm-9:06 am

1 stop18h 24m

Lambert-St Louis

Thu 9/25

7:55 pm-7:32 am

1 stop12h 37m

$163

Salt Lake CitySt. Louis

SLC - STL

SLCSTL

Salt Lake City

Mon 9/22

9:45 pm-9:06 am

1 stop10h 21m

Lambert-St Louis

Sun 9/28

2:38 pm-10:42 am

1 stop21h 04m

$193

Salt Lake CitySt. Louis

SLC - STL

SLCSTL

Salt Lake City

Thu 10/9

10:05 pm-9:07 am

1 stop10h 02m

Lambert-St Louis

Thu 10/16

10:17 am-8:03 pm

1 stop10h 46m

$227

Salt Lake CitySt. Louis

SLC - STL

SLCSTL

Salt Lake City

Thu 9/25

9:45 pm-9:06 am

1 stop10h 21m

Lambert-St Louis

Tue 9/30

7:55 pm-12:46 pm

1 stop17h 51m

$228

Salt Lake CitySt. Louis

SLC - STL

SLCSTL

Salt Lake City

Sat 10/11

6:30 am-9:22 am

2 stops25h 52m

Lambert-St Louis

Sun 10/12

7:52 pm-10:13 am

1 stop15h 21m

$230

Salt Lake CitySt. Louis

SLC - STL

SLCSTL

Salt Lake City

Wed 9/24

6:05 pm-9:06 am

2 stops14h 01m

Lambert-St Louis

Tue 9/30

7:55 pm-12:46 pm

1 stop17h 51m

$244

Salt Lake CitySt. Louis

SLC - STL

SLCSTL

Salt Lake City

Sat 9/20

9:58 pm-9:06 am

1 stop10h 08m

Lambert-St Louis

Mon 9/29

9:29 pm-12:46 pm

2 stops16h 17m

$267

Salt Lake CitySt. Louis

SLC - STL

SLCSTL

Salt Lake City

Thu 9/25

9:45 pm-9:06 am

1 stop10h 21m

Lambert-St Louis

Fri 9/26

9:35 pm-11:39 am

2 stops15h 04m

$277

Salt Lake CitySt. Louis

SLC - STL

SLCSTL

Salt Lake City

Sat 10/4

2:35 pm-9:00 pm

1 stop5h 25m

Lambert-St Louis

Tue 10/7

5:05 pm-11:10 pm

1 stop7h 05m

$279

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/8

Showing 1-10 of 22 results
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Best time to book a flight from Salt Lake City to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Salt Lake City 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 Salt Lake City to St. Louis

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

Use this chart to determine the optimal time to book a round-trip flight from Salt Lake City to St. Louis. Price data was last updated on August 29, 2025.

Booking 73 days in advance of your planned departure date is, on average, the best time to get cheap flights from Salt Lake City to St. Louis. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, August is the cheapest month in which you can book a flight from Salt Lake City to St. Louis (average of $311). Flying from Salt Lake City to St. Louis in March is currently the most expensive (average of $356). 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 SLC to STL?

Find hourly flight availability from Salt Lake City to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 11, 2025.

One of the essential ways to save on airfare from Salt Lake City to St. Louis is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the evening could potentially save you up to 16% on airfare.

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

Use this chart to determine the cheapest time to fly round-trip from Salt Lake City to St. Louis. Price data was last updated on September 7, 2025.

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

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. 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 St. Louis. Reviews last updated September 11, 2025.
Read through reviews of airlines operating flights from Salt Lake City to St. Louis, such as Southwest, Delta, and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

8.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,248 reviews
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

8.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Delta
8.0
Very good
7,960 reviews
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

8.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
United Airlines
7.4
Good
8,937 reviews
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

8.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

8.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Frontier
5.8
Fair
3,177 reviews
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

8.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Related info for your journey

Find useful and relevant information for your journey from Salt Lake City to St. Louis. 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 Salt Lake City to St. Louis?

    To fly from Salt Lake City to St. Louis, you need to book a flight from Salt Lake City (SLC) to Lambert-St Louis (STL). Nonstop flights to Lambert-St Louis from Salt Lake City take 2h 48m on average. When it comes time to book airfare, you have a few options: there are 4 outbound flights from Salt Lake City to Lambert-St Louis offered by 5 different airlines.

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

    Frontier can get you from Salt Lake City to St. Louis in just under 10h 21m. Your travel time can differ by up to . The distance from Salt Lake City to St. Louis is about 1153 mi.

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

    According to our current data, Frontier ($118), United Airlines ($298), and Southwest ($318) offers the cheapest pricing from Salt Lake City to St. Louis. Users have found that Frontier is 71% cheaper than the other options available to this destination.

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

    Consider SkyWest Airlines (100%), Sun Country Air (100%) or Southwest (100%) when booking your flight. These represent the most reliable airlines when flying from Salt Lake City to St. Louis.

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

    The cheapest flight price from Salt Lake City to St. Louis is $268. On average you can expect to pay $498. The most popular route, (Salt Lake City - Lambert-St Louis), can usually be booked for $180.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Salt Lake City to St. Louis 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 Salt Lake City to St. Louis?

    Currently, August is the cheapest month in which you can book a flight from Salt Lake City to St. Louis (average of $311). Flying from Salt Lake City to St. Louis in March is currently the most expensive (average of $356). 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 St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Edwardsville
O'Fallon
Fairview Heights
Maryland Heights
Collinsville
Eureka
Glencoe
St. Peters
Chesterfield
Alton
Farmington
Festus

Browse thousands of different options on Cheapflights for your next trip

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

Discover the top 5 airlines that operate flights from Salt Lake City to St. Louis. 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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$118Average$225FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$298Average$406FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$318Average$456FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$327Average$407FlexibilityNo cancel feeOn-time71%
DeltaCheapest$359Average$457FlexibilityNo cancel feeOn-timeN/A

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