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Cheap flights from Salt Lake City to St. Louis from $55

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Salt Lake City to St. Louis departing on 1/15. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Salt Lake City to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
10:20 pm - 1:57 pmSLC-STL
14h 37m1 stop
Frontier Logo
7:45 pm - 3:30 pmSTL-SLC
20h 45m1 stop
$137Frontier
Find Deal
Sun, Nov 16 - Wed, Nov 19
Frontier Logo
7:20 am - 10:02 amSLC-STL
25h 42m1 stop
Frontier Logo
10:10 pm - 1:05 pmSTL-SLC
15h 55m1 stop
$170Frontier
Find Deal
Thu, Dec 18 - Mon, Jan 5
Frontier Logo
10:39 am - 12:12 pmSLC-STL
24h 33m2 stops
Frontier Logo
7:43 pm - 11:37 amSTL-SLC
16h 54m1 stop
$182Frontier
Find Deal
Wed, Dec 10 - Sat, Dec 13
Frontier Logo
8:24 am - 3:08 pmSLC-STL
5h 44m1 stop
Frontier Logo
7:43 pm - 12:07 amSTL-SLC
5h 24m1 stop
$190Frontier
Find Deal
Mon, Dec 1 - Mon, Dec 8
Frontier Logo
12:56 pm - 7:47 pmSLC-STL
5h 51m1 stop
Frontier Logo
10:10 pm - 1:05 pmSTL-SLC
15h 55m1 stop
$191Frontier
Find Deal
Fri, Dec 19 - Mon, Jan 5
Frontier Logo
7:20 am - 10:02 amSLC-STL
25h 42m1 stop
Frontier Logo
5:11 pm - 1:05 pmSTL-SLC
20h 54m2 stops
$193Frontier
Find Deal
Thu, Dec 18 - Tue, Jan 6
Frontier Logo
7:20 am - 10:02 amSLC-STL
25h 42m1 stop
Frontier Logo
7:43 pm - 10:24 amSTL-SLC
15h 41m1 stop
$202Frontier
Find Deal
Thu, Dec 18 - Tue, Jan 6
Frontier Logo
8:58 pm - 10:02 amSLC-STL
12h 04m1 stop
Frontier Logo
7:43 pm - 11:37 amSTL-SLC
16h 54m1 stop
$205Frontier
Find Deal
Sun, Jan 4 - Sat, Jan 10
Multiple Airlines Logo
3:37 pm - 2:27 pmSLC-STL
21h 50m1 stop
Multiple Airlines Logo
7:43 pm - 12:07 amSTL-SLC
5h 24m1 stop
$249Multiple Airlines
Find Deal
Wed, Dec 10 - Sat, Dec 13
Alaska Airlines Logo
8:20 am - 1:54 pmSLC-STL
28h 34m2 stops
Alaska Airlines Logo
6:19 pm - 10:31 amSTL-SLC
17h 12m2 stops
$313Alaska Airlines
Find Deal
Mon, Jan 26 - Sat, Jan 31

Frontier flights from Salt Lake City to St. Louis

Our best Frontier deals on Salt Lake City to St. Louis flight tickets
Frontier
Nov 16
SLC10:20 pmSalt Lake City
14h 37m
1 stop
STL1:57 pmLambert-St Louis
Nov 19
STL7:45 pmLambert-St Louis
20h 45m
1 stop
SLC3:30 pmSalt Lake City
$137
Find similar
Frontier
Nov 12
SLC8:25 amSalt Lake City
23h 42m
1 stop
STL9:07 amLambert-St Louis
Nov 17
STL7:45 pmLambert-St Louis
16h 55m
1 stop
SLC11:40 amSalt Lake City
$170
Find similar
Frontier
Nov 12
SLC1:10 pmSalt Lake City
18h 57m
1 stop
STL9:07 amLambert-St Louis
Nov 18
STL7:45 pmLambert-St Louis
16h 55m
1 stop
SLC11:40 amSalt Lake City
$172
Find similar

Delta flights from Salt Lake City to St. Louis

Our best Delta deals on Salt Lake City to St. Louis flight tickets
Delta
Nov 18
SLC3:10 pmSalt Lake City
2h 47m
STL6:57 pmLambert-St Louis
Nov 22
STL5:00 pmLambert-St Louis
3h 17m
SLC7:17 pmSalt Lake City
$639
Find similar
Delta
Nov 18
SLC5:25 pmSalt Lake City
4h 58m
1 stop
STL11:23 pmLambert-St Louis
Nov 22
STL5:00 pmLambert-St Louis
3h 17m
SLC7:17 pmSalt Lake City
$649
Find similar
Delta
Nov 12
SLC8:55 pmSalt Lake City
2h 51m
STL12:46 amLambert-St Louis
Nov 17
STL2:21 pmLambert-St Louis
3h 19m
SLC4:40 pmSalt Lake City
$759
Find similar

momondo 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, momondo users made 832,500 searches. Data last updated November 4, 2025.
Use the filters below to find and compare flights from Salt Lake City to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Salt Lake CitySt. Louis

SLC - STL

SLCSTL

Salt Lake City

Sun 11/16

10:20 pm-1:57 pm

1 stop14h 37m

Lambert-St Louis

Wed 11/19

7:45 pm-3:30 pm

1 stop20h 45m

$137

Salt Lake CitySt. Louis

SLC - STL

SLCSTL

Salt Lake City

Thu 12/18

7:20 am-10:02 am

1 stop25h 42m

Lambert-St Louis

Mon 1/5

10:10 pm-1:05 pm

1 stop15h 55m

$170

Salt Lake CitySt. Louis

SLC - STL

SLCSTL

Salt Lake City

Wed 12/10

10:39 am-12:12 pm

2 stops24h 33m

Lambert-St Louis

Sat 12/13

7:43 pm-11:37 am

1 stop16h 54m

$182

Salt Lake CitySt. Louis

SLC - STL

SLCSTL

Salt Lake City

Mon 12/1

8:24 am-3:08 pm

1 stop5h 44m

Lambert-St Louis

Mon 12/8

7:43 pm-12:07 am

1 stop5h 24m

$190

Salt Lake CitySt. Louis

SLC - STL

SLCSTL

Salt Lake City

Fri 12/19

12:56 pm-7:47 pm

1 stop5h 51m

Lambert-St Louis

Mon 1/5

10:10 pm-1:05 pm

1 stop15h 55m

$191

Salt Lake CitySt. Louis

SLC - STL

SLCSTL

Salt Lake City

Thu 12/18

7:20 am-10:02 am

1 stop25h 42m

Lambert-St Louis

Tue 1/6

5:11 pm-1:05 pm

2 stops20h 54m

$193

Salt Lake CitySt. Louis

SLC - STL

SLCSTL

Salt Lake City

Thu 12/18

7:20 am-10:02 am

1 stop25h 42m

Lambert-St Louis

Tue 1/6

7:43 pm-10:24 am

1 stop15h 41m

$202

Salt Lake CitySt. Louis

SLC - STL

SLCSTL

Salt Lake City

Sun 1/4

8:58 pm-10:02 am

1 stop12h 04m

Lambert-St Louis

Sat 1/10

7:43 pm-11:37 am

1 stop16h 54m

$205

Salt Lake CitySt. Louis

SLC - STL

SLCSTL

Salt Lake City

Wed 12/10

3:37 pm-2:27 pm

1 stop21h 50m

Lambert-St Louis

Sat 12/13

7:43 pm-12:07 am

1 stop5h 24m

$249

Salt Lake CitySt. Louis

SLC - STL

SLCSTL

Salt Lake City

Mon 1/26

8:20 am-1:54 pm

2 stops28h 34m

Lambert-St Louis

Sat 1/31

6:19 pm-10:31 am

2 stops17h 12m

$313

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to St. Louis from

How to get the cheapest flight ticket from Salt Lake City to St. Louis

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to St. Louis?

In general, February is the cheapest month to fly from Salt Lake City to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $375. The month of April is another great option to travel to St. Louis, with average flight prices from Salt Lake City averaging around $389.

What is the cheapest day to depart on your flight to St. Louis?

The cheapest day to depart on your flight to St. Louis is on a Friday when prices can be found for as low as $429. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Monday because tickets tend to average around $594. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.

What is the cheapest time of day to depart on your flight to St. Louis?

Flying to St. Louis from Salt Lake City in the evening is the least expensive time of day to depart. momondo users have found prices as low as $418 when looking at flights departing in the evening. In the afternoon is when there is more demand to fly to St. Louis, so prices are often more expensive at around $548 per ticket.

What is the cheapest Salt Lake City to Lambert-St Louis flight route?

Fly from Salt Lake City to Lambert-St Louis for the best Salt Lake City - Lambert-St Louis flight prices

How far in advance should I book a flight to St. Louis?

You are more likely to see cheaper flights to St. Louis from Salt Lake City when booking weeks ahead of your departure date. In general, you can expect to find flights to St. Louis for around $412 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to St. Louis from Salt Lake City for as low as $340 on momondo.

What cabin class options are available on Salt Lake City to Lambert-St Louis flights?

There are 2 cabin classes available to choose from on Salt Lake City to Lambert-St Louis flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have Salt Lake City to St. Louis flight prices changed over time?

As of November 2025, prices for Salt Lake City to St. Louis flights are approximately 6% more expensive when compared to flights at the same time last year.

When to book flights from Salt Lake City to St. Louis

Are you open to changing your travel dates? Check out the ideal times to fly from Salt Lake City to St. Louis according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Salt Lake City to St. Louis (SLC to STL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Salt Lake City to St. Louis

Best Price Found

$378

Fastest flight time

2h 40m

Direct flights

Every day

Airports in St. Louis

1 airport
The best one-way flight to St. Louis from Salt Lake City in the past 72 hours is $378. The best round-trip flight deal from Salt Lake City to St. Louis found on momondo in the last 72 hours is $419.
The fastest flight from Salt Lake City to St. Louis takes 2h 40m
Direct flights go from Salt Lake City to St. Louis every day.
There is 1 airport near St. Louis: Lambert-St Louis (STL)
Search flight deals

  • How far is Salt Lake City to Lambert-St Louis by plane?

    There are 1158.3 mi between Salt Lake City and Lambert-St Louis. In terms of flight time, this usually takes a little over 5h 44m.

  • When did momondo last update prices for flights from Salt Lake City Airport to Lambert-St Louis Airport?

    Prices for flights from Salt Lake City Airport to Lambert-St Louis Airport refresh daily.

  • How many operators does momondo search for flights from Salt Lake City Airport to Lambert-St Louis Airport?

  • How old do you have to be to fly from Salt Lake City Airport to Lambert-St Louis Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Salt Lake City Airport to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The travel and health documents required for your trip to Lambert-St Louis Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Lambert-St Louis Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular plane model from Salt Lake City to St. Louis?

  • What is the most popular airline from Salt Lake City to St. Louis?

Best airlines flying from Salt Lake City to St. Louis

Compare and see reviews for airlines that fly from Salt Lake City to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $127Free CancellationRating
5.8
3,117 reviews
Search Frontier flights
SouthwestPriceFrom $296Free CancellationRating
8.0
4,239 reviews
Search Southwest flights
United AirlinesPriceFrom $306Free CancellationRating
7.4
9,002 reviews
Search United Airlines flights
American AirlinesPriceFrom $327Free CancellationRating
7.2
11,040 reviews
Search American Airlines flights
DeltaPriceFrom $359Free CancellationRating
7.9
8,003 reviews
Search Delta flights

  • Delta Flights From Salt Lake City to St. Louis

    Delta operates around 15 flights from Salt Lake City to St. Louis every week. The average price of these flights found in the last 72 hours has been $448, but momondo users have found Delta deals from Salt Lake City to St. Louis from as low as $359 round-trip. Delta has been scored 7.9/10 in 8,003 reviews.

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Hermann
Fairview Heights
Florissant
Maryland Heights
O'Fallon
Wentzville
Fenton
Collinsville
St. Peters
Alton
Farmington
Festus
Glencoe
Edwardsville
Clayton
Eureka
Litchfield
Shrewsbury

Why use momondo?

Why should I use momondo to find a flight deal from Salt Lake City to St. Louis?

It is quick and easy to find Salt Lake City to St. Louis flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to St. Louis that suits you.

Can I find flights from Salt Lake City to St. Louis with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to St. Louis from Salt Lake City with this policy.

How can momondo help me find flights from Salt Lake City to St. Louis?

momondo helps you find the best flight between Salt Lake City and St. Louis by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Salt Lake City to St. Louis right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to St. Louis from Salt Lake City. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your St. Louis trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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