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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 10/7. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SLC
Aug 3 — Aug 101
Sun 8/3
Sun 8/10
1 adult, Economy
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Cheapflights Tip: The best prices from Lambert-St Louis to Salt Lake City are usually found in April or September, booked 48 days in advance, depart on a Tuesday or Wednesday and return on a Wednesday

Cheap 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 July 29, 2025.

Round-trip from

$205
(FlightHub)

One-way from

$71
(Trip.com)

Popular in

December

Cheapest in

April

Average price

$439

Good round-trip deal

$327 or less

Good one-way deal

$208 or less
From Lambert-St Louis to Salt Lake City
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One-way flight from Lambert-St Louis to Salt Lake City
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Highest demand for flights based on searches. 5% potential increase in price ($22 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Price to beat on a round-trip flight from Lambert-St Louis to Salt Lake City.
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Price to beat on a one-way flight from Lambert-St Louis to Salt Lake City.
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Find 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 July 29, 2025.

This FlightHub deal was found by Cheapflights users on 7/27. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/97:55 pmSTL - SLC
1 stop27h 31mFrontier
Sat 9/138:45 amSLC - STL
1 stop23h 21mFrontier
Deal found 7/27$205
This Mytrip deal was found by Cheapflights users on 7/27. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/712:05 pmSTL - SLC
3 stops27h 24mSpirit Airlines
Sat 9/133:34 pmSLC - STL
2 stops18h 16mSpirit Airlines
Deal found 7/27$279
This Southwest deal was found by Cheapflights users on 7/28. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/95:00 amSTL - SLC
1 stop6h 40mSouthwest
Tue 12/161:10 pmSLC - STL
1 stop6h 50mSouthwest
Deal found 7/28$297
This Alaska Airlines deal was found by Cheapflights users on 7/28. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/306:00 amSTL - SLC
2 stops15h 30mAlaska Airlines
Tue 10/73:43 pmSLC - STL
1 stop7h 20mAlaska Airlines
Deal found 7/28$351
This Mytrip deal was found by Cheapflights users on 7/28. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/89:20 amSTL - SLC
3 stops30h 09mMultiple Airlines
Wed 9/103:34 pmSLC - STL
2 stops18h 16mMultiple Airlines
Deal found 7/28$354
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/286:45 pmSTL - SLC
Nonstop3h 09mDelta
Mon 9/18:50 pmSLC - STL
Nonstop2h 48mDelta
Deal found 7/29$399

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 July 29, 2025.
Use the filters below to find and compare flights from St. Louis to Salt Lake City that are best for you.

Fly from

St. Louis

Fly to

Salt Lake City

Route

Depart

Return

Price

St. LouisSalt Lake City

STL - SLC

STLSLC

Lambert-St Louis

Tue 9/9

7:55 pm-10:26 pm

1 stop27h 31m

Salt Lake City

Sat 9/13

8:45 am-9:06 am

1 stop23h 21m

$205

St. LouisSalt Lake City

STL - SLC

STLSLC

Lambert-St Louis

Sun 9/7

12:05 pm-2:29 pm

3 stops27h 24m

Salt Lake City

Sat 9/13

3:34 pm-10:50 am

2 stops18h 16m

$279

St. LouisSalt Lake City

STL - SLC

STLSLC

Lambert-St Louis

Sat 8/30

2:05 pm-9:20 pm

2 stops8h 15m

Salt Lake City

Tue 9/2

3:35 pm-10:35 pm

1 stop6h 00m

$302

St. LouisSalt Lake City

STL - SLC

STLSLC

Lambert-St Louis

Tue 9/30

6:00 am-8:30 pm

2 stops15h 30m

Salt Lake City

Tue 10/7

3:43 pm-12:03 am

1 stop7h 20m

$351

St. LouisSalt Lake City

STL - SLC

STLSLC

Lambert-St Louis

Mon 9/8

9:20 am-2:29 pm

3 stops30h 09m

Salt Lake City

Wed 9/10

3:34 pm-10:50 am

2 stops18h 16m

$354

St. LouisSalt Lake City

STL - SLC

STLSLC

Lambert-St Louis

Thu 8/28

6:45 pm-8:54 pm

Nonstop3h 09m

Salt Lake City

Mon 9/1

8:50 pm-12:38 am

Nonstop2h 48m

$399

St. LouisSalt Lake City

STL - SLC

STLSLC

Lambert-St Louis

Tue 10/7

7:52 pm-10:19 pm

1 stop27h 27m

$71

St. LouisSalt Lake City

STL - SLC

STLSLC

Lambert-St Louis

Sun 9/21

12:05 pm-2:29 pm

3 stops27h 24m

$148

St. LouisSalt Lake City

STL - SLC

STLSLC

Lambert-St Louis

Sat 8/30

1:50 pm-8:15 pm

2 stops7h 25m

$154

St. LouisSalt Lake City

STL - SLC

STLSLC

Lambert-St Louis

Mon 10/20

9:50 am-2:29 pm

3 stops29h 39m

$191

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/26

Showing 1-10 of 13 results
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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 July 25, 2025.

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 48 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, October is the cheapest month in which you can book a flight from St. Louis to Salt Lake City (average of $277). Flying from St. Louis to Salt Lake City in March is currently the most expensive (average of $417). 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 July 29, 2025.

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 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 27, 2025.

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. Sunday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from St. Louis to Salt Lake City

Explore weekly flight availability from St. Louis to Salt Lake City. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated July 29, 2025.

The most flights from STL to SLC are scheduled on a Monday (5 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (1 on average).

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 July 29, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Southwest, and Delta 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.
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Crew

8.5

Food

7.1

Entertainment

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Crew

8.5

Food

7.1

Entertainment

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Southwest
8.0
Very good
4,238 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Crew

8.5

Food

7.1

Entertainment

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Delta
8.0
Very good
7,975 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Crew

8.5

Food

7.1

Entertainment

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
United Airlines
7.4
Good
8,892 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Crew

8.5

Food

7.1

Entertainment

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Spirit Airlines
6.3
Okay
8,040 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Crew

8.5

Food

7.1

Entertainment

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

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 06m on average. When it comes time to book airfare, you have a few options: there are 4 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 1 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • 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 $205. Other airlines that can offer you cheap pricing are Spirit Airlines, from $279, and Southwest, from $302. Frontier is priced at 52% 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 $71. Users have also found prices from $148 and $154 on Spirit Airlines and Southwest, 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: Southwest (100%), Korean Air (91%), Delta (85%).

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

    On average you can expect to pay $727 for a flight from St. Louis to Salt Lake City. The cheapest flight overall is $153 while the most popular route, (Lambert-St Louis - Salt Lake City) is currently priced at $224.

  • 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, October is the cheapest month in which you can book a flight from St. Louis to Salt Lake City (average of $277). Flying from St. Louis to Salt Lake City in March is currently the most expensive (average of $417). 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
Midvale
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Farmington
Logan
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Draper
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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 July 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$114Average$213FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$276Average$367FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$290Average$486FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$313Average$431FlexibilityNo cancel feeOn-time63%
DeltaCheapest$359Average$461FlexibilityNo cancel feeOn-timeN/A

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