What is the cheapest airline that flies from Utah to Lambert-St Louis?

Frontier is the most popular carrier operating from Utah to Lambert-St Louis

How many flights depart from Utah to St. Louis on average per week?

28 flights are operational weekly from Utah to St. Louis as of December 2025. The most popular departure day for this route is Tue, with 18% of flights per week taking off on this day.

How many flights depart from Utah to St. Louis on average per day?

As of December 2025, there are 4 flights per day flying from Utah to St. Louis. The most common time of day flights depart is 3:00PM, with 44% of flights taking off in the afternoon.

What airlines fly to St. Louis?

Delta, Frontier and Southwest are the top three most popular airlines that fly to St. Louis from Utah according to our data. Delta is the first choice among our users, with 63% of people opting to fly with this airline when traveling to St. Louis. Keep in mind that there are 5 different airlines that fly to St. Louis on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Utah to Lambert-St Louis Airport?

Prices for flights from Utah to Lambert-St Louis Airport are updated daily.

How many operators does momondo search for flights from Utah to Lambert-St Louis Airport?

The number of operators available for flights from Utah to Lambert-St Louis Airport is 5 as of December 2025.

How old do you have to be to fly from Utah to Lambert-St Louis Airport?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Utah to Lambert-St Louis Airport.

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

The travel and health documents you'll need for your trip to Lambert-St Louis Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Lambert-St Louis Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$60 Cheap Flights from Utah to St. Louis in 2025/26

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Find the cheapest flights from Utah to St. Louis

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

8:40 am - 2:48 pm

SLC

STL

5h 08m1 stop

3:46 pm - 5:36 pm

STL

SLC

26h 50m1 stop

$133Frontier

Sat, Jan 17 - Sat, Jan 24

2:18 pm - 2:48 pm

SLC

STL

23h 30m1 stop

7:39 pm - 8:44 am

STL

SLC

14h 05m1 stop

$143Frontier

Tue, Jan 13 - Fri, Jan 23

2:18 pm - 2:48 pm

SLC

STL

23h 30m1 stop

7:39 pm - 8:44 am

STL

SLC

14h 05m1 stop

$144Frontier

Tue, Jan 13 - Fri, Jan 23

8:00 am - 3:53 pm

SLC

STL

6h 53m1 stop

2:51 pm - 12:14 am

STL

SLC

10h 23m1 stop

$155Frontier

Wed, Feb 18 - Sat, Feb 21

6:31 pm - 6:44 pm

SLC

STL

23h 13m1 stop

1:40 pm - 12:14 am

STL

SLC

11h 34m1 stop

$158Frontier

Thu, Jan 22 - Mon, Jan 26

8:40 am - 2:48 pm

SLC

STL

5h 08m1 stop

3:46 pm - 2:25 pm

STL

SLC

23h 39m2 stops

$162Frontier

Sat, Jan 17 - Sat, Jan 24

9:19 pm - 6:44 pm

SLC

STL

20h 25m1 stop

9:27 pm - 10:50 am

STL

SLC

14h 23m1 stop

$175Frontier

Thu, Jan 22 - Sun, Jan 25

8:05 pm - 9:21 pm

SLC

STL

24h 16m1 stop

7:43 pm - 1:03 pm

STL

SLC

18h 20m1 stop

$176Frontier

Thu, Jan 8 - Mon, Jan 12

9:59 pm - 1:09 pm

SLC

STL

14h 10m1 stop

10:11 pm - 8:30 am

STL

SLC

11h 19m1 stop

$178Frontier

Thu, Feb 26 - Sun, Mar 1

12:15 pm - 9:06 pm

SLC

STL

7h 51m1 stop

1:40 pm - 12:14 am

STL

SLC

11h 34m1 stop

$182Frontier

Thu, Jan 22 - Mon, Jan 26

Frontier flights from Utah to St. Louis

Our best Frontier deals on Utah to St. Louis flight tickets

Frontier

Jan 17

SLC8:40 amSalt Lake City

5h 08m

1 stop

STL2:48 pmLambert-St Louis

Jan 24

STL3:46 pmLambert-St Louis

26h 50m

1 stop

SLC5:36 pmSalt Lake City

$133

Find similar

Frontier

Jan 13

SLC2:18 pmSalt Lake City

23h 30m

1 stop

STL2:48 pmLambert-St Louis

Jan 23

STL7:39 pmLambert-St Louis

14h 05m

1 stop

SLC8:44 amSalt Lake City

$143

Find similar

Frontier

Jan 13

SLC2:18 pmSalt Lake City

23h 30m

1 stop

STL2:48 pmLambert-St Louis

Jan 23

STL7:39 pmLambert-St Louis

14h 05m

1 stop

SLC8:44 amSalt Lake City

$144

Find similar

Alaska Airlines flights from Utah to St. Louis

Our best Alaska Airlines deals on Utah to St. Louis flight tickets

Alaska Airlines

Feb 26

SLC6:20 amSalt Lake City

16h 39m

1 stop

STL11:59 pmLambert-St Louis

Mar 2

STL2:47 pmLambert-St Louis

7h 44m

1 stop

SLC9:31 pmSalt Lake City

$324

Find similar

Alaska Airlines

Jan 27

SLC9:00 amSalt Lake City

27h 54m

1 stop

STL1:54 pmLambert-St Louis

Jan 30

STL2:50 pmLambert-St Louis

9h 53m

1 stop

SLC11:43 pmSalt Lake City

$331

Find similar

Alaska Airlines

Feb 26

SLC6:20 amSalt Lake City

16h 39m

1 stop

STL11:59 pmLambert-St Louis

Mar 2

STL2:47 pmLambert-St Louis

7h 44m

1 stop

SLC9:31 pmSalt Lake City

$336

Find similar

Fly from

Fly to

Route

Depart

Return

Price

Salt Lake CitySt. Louis

SLC - STL

SLCSTL

Salt Lake City

Sat 1/17

8:40 am-2:48 pm

1 stop5h 08m

Lambert-St Louis

Sat 1/24

3:46 pm-5:36 pm

1 stop26h 50m

$133

Salt Lake CitySt. Louis

SLC - STL

SLCSTL

Salt Lake City

Tue 1/13

2:18 pm-2:48 pm

1 stop23h 30m

Lambert-St Louis

Fri 1/23

7:39 pm-8:44 am

1 stop14h 05m

$143

Salt Lake CitySt. Louis

SLC - STL

SLCSTL

Salt Lake City

Tue 1/13

2:18 pm-2:48 pm

1 stop23h 30m

Lambert-St Louis

Fri 1/23

7:39 pm-8:44 am

1 stop14h 05m

$144

Salt Lake CitySt. Louis

SLC - STL

SLCSTL

Salt Lake City

Wed 2/18

8:00 am-3:53 pm

1 stop6h 53m

Lambert-St Louis

Sat 2/21

2:51 pm-12:14 am

1 stop10h 23m

$155

Salt Lake CitySt. Louis

SLC - STL

SLCSTL

Salt Lake City

Thu 1/22

6:31 pm-6:44 pm

1 stop23h 13m

Lambert-St Louis

Mon 1/26

1:40 pm-12:14 am

1 stop11h 34m

$158

Salt Lake CitySt. Louis

SLC - STL

SLCSTL

Salt Lake City

Sat 1/17

8:40 am-2:48 pm

1 stop5h 08m

Lambert-St Louis

Sat 1/24

3:46 pm-2:25 pm

2 stops23h 39m

$162

Salt Lake CitySt. Louis

SLC - STL

SLCSTL

Salt Lake City

Thu 1/22

9:19 pm-6:44 pm

1 stop20h 25m

Lambert-St Louis

Sun 1/25

9:27 pm-10:50 am

1 stop14h 23m

$175

Salt Lake CitySt. Louis

SLC - STL

SLCSTL

Salt Lake City

Thu 1/8

8:05 pm-9:21 pm

1 stop24h 16m

Lambert-St Louis

Mon 1/12

7:43 pm-1:03 pm

1 stop18h 20m

$176

Salt Lake CitySt. Louis

SLC - STL

SLCSTL

Salt Lake City

Thu 2/26

9:59 pm-1:09 pm

1 stop14h 10m

Lambert-St Louis

Sun 3/1

10:11 pm-8:30 am

1 stop11h 19m

$178

Salt Lake CitySt. Louis

SLC - STL

SLCSTL

Salt Lake City

Thu 1/22

12:15 pm-9:06 pm

1 stop7h 51m

Lambert-St Louis

Mon 1/26

1:40 pm-12:14 am

1 stop11h 34m

$182

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Utah 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

Prices

Airlines

Other information

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

In general, February is the cheapest month to fly from Utah 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 Utah averaging around $399.

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 $419. 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 $537. 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 Utah 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 morning is when there is more demand to fly to St. Louis, so prices are often more expensive at around $491 per ticket.

What is the cheapest Utah to Lambert-St Louis flight route?

Fly from Salt Lake City to Lambert-St Louis for the best Utah - 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 Utah when booking weeks ahead of your departure date. In general, you can expect to find flights to St. Louis for around $419 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to St. Louis from Utah for as low as $340 on momondo.

What cabin class options are available on Utah to Lambert-St Louis flights?

There are 2 cabin classes available to choose from on Utah 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.

Cheap Utah to St. Louis flight deals and tips

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

Best Price Found	$598
Fastest flight time	2h 46m
Direct flights	Every day
Airports in St. Louis	1 airport

The best one-way flight to St. Louis from Utah in the past 72 hours is $598. The best round-trip flight deal from Utah to St. Louis found on momondo in the last 72 hours is $489.

The fastest flight from Utah to St. Louis takes 2h 46m

Direct flights go from Utah to St. Louis every day.

There is 1 airport in St. Louis. From Utah there are direct flights to Lambert-St Louis (STL).

Search flight deals

When did momondo last update prices for flights from Utah to Lambert-St Louis Airport?
Prices for flights from Utah to Lambert-St Louis Airport are updated daily.
How many operators does momondo search for flights from Utah to Lambert-St Louis Airport?
The number of operators available for flights from Utah to Lambert-St Louis Airport is 5 as of December 2025.
How old do you have to be to fly from Utah to Lambert-St Louis Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Utah to Lambert-St Louis Airport.
What documentation or ID do you need to fly to Lambert-St Louis Airport?
The travel and health documents you'll need for your trip to Lambert-St Louis Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Lambert-St Louis Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Utah to St. Louis?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Utah to St. Louis is Airbus A220-100 (57.58% of total bookings). The next most popular plane models are Airbus A320-100/200 (16.67%), Airbus A319 (6.06%), and Airbus A220-300 (4.55%).

Best airlines flying from Utah to St. Louis

Compare and see reviews for airlines that fly from Utah to St. Louis with momondo

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $125	Free Cancellation	Rating 5.8 3,078 reviews	Search Frontier flights
United Airlines	PriceFrom $220	Free Cancellation	Rating 7.4 9,102 reviews	Search United Airlines flights
Southwest	PriceFrom $264	Free Cancellation	Rating 8.0 4,254 reviews	Search Southwest flights
American Airlines	PriceFrom $316	Free Cancellation	Rating 7.2 11,052 reviews	Search American Airlines flights
Delta	PriceFrom $359	Free Cancellation	Rating 7.9 8,014 reviews	Search Delta flights

St. Charles

Chesterfield

Hermann

Fairview Heights

Maryland Heights

O'Fallon

Florissant

Fenton

St. Peters

Wentzville

Collinsville

Alton

Farmington

Clayton

Festus

Glencoe

Eureka

Edwardsville

Litchfield

Shrewsbury

Why use momondo?

Why should I use momondo to find a flight deal from Utah to St. Louis?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to St. Louis from Utah.

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

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

How can momondo help me find flights from Utah to St. Louis?

momondo provides multiple filters to help you find the best flight to St. Louis from Utah. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

If you are not ready to book a flight from Utah to St. Louis now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to St. Louis and let you know when they change.