STL - SLC

$88 Find Cheap Flights from St. Louis to Salt Lake City

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Salt Lake City departing on 7/27. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Salt Lake City

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Salt Lake City, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Salt Lake City, as well as popular online travel agencies
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$180
Typical prices: $579-$430
Frontier
Mon 7/27Wed 7/29
STL - SLC • 1 stop
Cheapest non-stop
$439
Typical prices: $439-$638
Delta
Tue 8/25Mon 8/31
STL - SLC • Non-stop
Nonstop flights
You can fly direct with Delta and Southwest. Average duration is 3h 07m
Direct flights
Direct flights
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Direct flights
Direct flights
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Top layover airports
Cheapest • Avg $320 (round-trip)
Shortest trip • 5h 34m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 5 weeks in advance save around 32% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 12% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Salt Lake City!
Flight Deals
Booking Insights
Expert advice
Flight Deals

Cheap Flights from St. Louis to Salt Lake City (STL-SLC)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to Salt Lake City that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from St. Louis to Salt Lake City

Mon, Jul 27 - Wed, Jul 29
Frontier Logo
7:10 pm - 9:26 am
STL
-
SLC
15h 16m
1 stop
Frontier Logo
1:47 pm - 6:15 pm
SLC
-
STL
27h 28m
1 stop
$180Frontier
Tue, Jul 14 - Tue, Jul 28
Frontier Logo
7:03 pm - 9:26 am
STL
-
SLC
15h 23m
1 stop
Frontier Logo
6:05 am - 7:23 pm
SLC
-
STL
12h 18m
1 stop
$181Frontier
Tue, Jul 7 - Tue, Jul 14
Frontier Logo
8:08 pm - 7:31 am
STL
-
SLC
12h 23m
1 stop
Frontier Logo
6:05 am - 7:23 pm
SLC
-
STL
12h 18m
1 stop
$185Frontier
Mon, Jul 27 - Wed, Jul 29
Frontier Logo
7:10 pm - 9:26 am
STL
-
SLC
15h 16m
1 stop
Frontier Logo
8:16 am - 7:23 pm
SLC
-
STL
10h 07m
1 stop
$187Frontier
Tue, Jul 7 - Tue, Jul 14
Frontier Logo
8:08 pm - 7:31 am
STL
-
SLC
12h 23m
1 stop
Frontier Logo
6:05 am - 7:23 pm
SLC
-
STL
12h 18m
1 stop
$189Frontier
Tue, Aug 25 - Wed, Aug 26
Frontier Logo
3:33 pm - 8:20 pm
STL
-
SLC
5h 47m
1 stop
Frontier Logo
8:16 am - 7:23 pm
SLC
-
STL
10h 07m
1 stop
$210Frontier
Wed, Jul 8 - Tue, Jul 14
Frontier Logo
8:08 pm - 7:31 am
STL
-
SLC
12h 23m
1 stop
Frontier Logo
6:05 am - 7:23 pm
SLC
-
STL
12h 18m
1 stop
$214Frontier
Wed, Jul 29 - Wed, Aug 5
Frontier Logo
8:08 pm - 7:31 am
STL
-
SLC
12h 23m
1 stop
Frontier Logo
3:41 pm - 7:23 pm
SLC
-
STL
26h 42m
1 stop
$220Frontier
Tue, Jul 7 - Wed, Jul 8
Frontier Logo
8:08 pm - 7:31 am
STL
-
SLC
12h 23m
1 stop
Frontier Logo
1:47 pm - 6:15 pm
SLC
-
STL
27h 28m
1 stop
$222Frontier
Mon, Jul 6 - Tue, Jul 14
Frontier Logo
7:10 pm - 9:26 am
STL
-
SLC
15h 16m
1 stop
Frontier Logo
6:05 am - 7:23 pm
SLC
-
STL
12h 18m
1 stop
$227Frontier
Booking Insights

KAYAK's insights & trends for St. Louis to Salt Lake City flights

Get data-powered insights and trends into flights from St. Louis to Salt Lake City to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from St. Louis to Salt Lake City?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from St. Louis to Salt Lake City departing in July.

What’s the cheapest day of the week to fly from St. Louis to Salt Lake City?

The average price of all round-trip flights from St. Louis to Salt Lake City clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to Salt Lake City on a Thursday and more expensive on a Monday. On your return trip to St. Louis, you should consider flying back on a Tuesday, and avoid Mondays for better deals.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from St. Louis to Salt Lake City, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from St. Louis to Salt Lake City is September, where tickets cost $399 (return) on average. On the other hand, the most expensive months are February and December, where the average cost of round-trip tickets is $499 and $499 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from St. Louis to Salt Lake City, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from St. Louis to Salt Lake City, you should book around 5 weeks before departure, which saves you about 32% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 9 weeks before departure.

Expert advice

Expert advice for your flight from St. Louis to Salt Lake City

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Yulia Denisyuk

Yulia Denisyuk

Expert on STL

Yulia is a freelance journalist who’s dispatched from 90+ countries. Her work focuses on cultures, adventure trips and air travel, appearing in NatGeo, NYT, CNTraveler, and more. For past assignments, she’s stayed with nomads in Mongolia and learned the art of Imigongo in Rwanda. She’s based in Chicago; in winter she often questions that decision.

Harriet Baskas

Harriet Baskas

Expert on SLC

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Good to know

Low seasonNovember
Cheapest flight$88
Best time to beat the crowds but there is an average 2% increase in price.
Most popular time to fly with an average 7% increase in price.
Flight from St. Louis to Salt Lake City

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

Are your dates flexible? Find out the best times to travel from St. Louis to Salt Lake City based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from St. Louis to Salt Lake City

  • What is the cheapest flight from St. Louis to Salt Lake City?

    In the last 5 days, the lowest price for a flight from St. Louis to Salt Lake City was $88 for a one-way ticket and $180 for a round-trip.

  • Do I need a passport to fly between St. Louis and Salt Lake City?

    No

  • Which airlines offer Wi-Fi service onboard planes from St. Louis to Salt Lake City?

    Delta, Alaska Airlines, American Airlines, Hawaiian Airlines, and JetBlue offer inflight Wi-Fi service on the St. Louis to Salt Lake City flight route.

  • Which aircraft models fly most regularly from St. Louis to Salt Lake City?

    The Airbus A319 is the aircraft model that flies most regularly on the St. Louis to Salt Lake City flight route.

  • Which airline alliances offer flights from St. Louis to Salt Lake City?

    oneworld, and SkyTeam are the airline alliances operating flights between St. Louis and Salt Lake City, with oneworld being the most commonly used for this route.

  • On which days can I fly direct from St. Louis to Salt Lake City?

    There are nonstop flights from St. Louis to Salt Lake City on a daily basis.

  • Which is the best airline for flights from St. Louis to Salt Lake City, Southwest or Delta?

    The two airlines most popular with KAYAK users for flights from St. Louis to Salt Lake City are Southwest and Delta. With an average price for the route of $425 and an overall rating of 7.9, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $499 and an overall rating of 7.8.

  • How does KAYAK find such low prices on flights from St. Louis to Salt Lake City?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from St. Louis to Salt Lake City.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from St. Louis to Salt Lake City?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Salt Lake City from St. Louis is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from St. Louis to Salt Lake City?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Salt Lake City with an airline and back to St. Louis with another airline. Booking your flights between St. Louis and SLC can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from St. Louis to Salt Lake City?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Salt Lake City from St. Louis up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from St. Louis to Salt Lake City

  • Looking for a cheap flight? 25% of our users found flights on this route for $193 or less one-way and $376 or less round-trip.

Prefer to fly direct from St. Louis to Salt Lake City?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Lambert-St Louis to Salt Lake City.
Find which airlines fly direct from Lambert-St Louis Airport to Salt Lake City Airport, which days they fly and book direct flights.

Direct departures

Lambert-St Louis to Salt Lake City

Monday

Delta

Delta

Tuesday

Delta

Delta

Wednesday

Delta

Delta

Thursday

Delta

Delta

Friday

Delta

Delta

Saturday

Delta,Southwest

Delta,Southwest

Sunday

Delta

Delta

See more direct flights

Direct returns

Salt Lake City to Lambert-St Louis

Monday

Delta

Delta

Tuesday

Delta

Delta

Wednesday

Delta

Delta

Thursday

Delta

Delta

Friday

Delta

Delta

Saturday

Delta,Southwest

Delta,Southwest

Sunday

Delta

Delta

See more direct flights

Reviews of the top 4 airlines serving from St. Louis to Salt Lake City

 
See real verified KAYAK customer reviews for airlines flying from St. Louis to Salt Lake City. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from St. Louis to Salt Lake City? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
SouthwestOverall score based on 4235 reviews
7.0Food
7.5Entertainment
8.1Boarding
8.6Crew
8.0Comfort
Airline reviews

Flight was delayed over 3 hours. Planes were dirty. Staff indifferent. And they serve vegan pretzels as snacks.

2.0 MediocreMatthew, Jun 2026
CVG - MDW
Read more Southwest reviews

Flight was delayed over 3 hours. Planes were dirty. Staff indifferent. And they serve vegan pretzels as snacks.

It was great. The gate staff were very helpful in Portland when my son forgot his rolling bag and had to go back to get it just in time to make it on the plane. We really appreciate that. Great job!

Airline is not very senior friendly. Flights are late, forcing us to run to the connecting flight. Food is awful. Wish they would go back to pretzels and peanuts. During flight, pressurization isn’t quite right and all of our ears get plugged. Everything is nickel and dime, charging for boarding, seat selection and legroom. While a screen at the desk in the gate area says check your roll on bag now for free due to space limitation, the employee at the desk will not check the bag without a $100 fee. Insane.

Kayak could’ve posted the correct gate number. Almost missed my flight.

Slow boarding, limited food and drink portions. Bad delays and turbulence

there were two flight attendants that were up front...that were the best! They get KUDOs for making my trip only fantastic. Tell them Jeff said that!

OKay. I sat in the back of the plane and it was really loud between babies and little kids, and adults who.like to talk a lot and loudly most of the flight.

Flight coming out of Buffalo was delayed, so we had to be rescheduled on another flight from Baltimore to Phoenix which means we had a long layover and got home 3.5 hours late. Shuttle to parking stopped at 10pm, so we had to pay for an Uber to the parking lot and got charged an extra day of parking since it was after midnight. Not the best experience. Long day!

Was fine, delayed and feels like southwest is always late

I don't know why flying out of Sarasota requires two plane changes.

Horrible. Faucet in sink not working, wifi not working. Didn’t bring food or snacks

Flight was delayed before take off and at landing. Baggage took 20 minutes. Flight crew would not serve full soft drink and had to ask multiple times before receiving water.

From checking to boarding, it was a seamless experience. The service agents were so helpful. The flight crew was so pleasant.

Gate agent showed up 20 minutes before boarding and was not at all friendly. Had to take this flight due to the one on the day before being cancelled and any later options were already full with long standby lists. Despite having paid for Delta Comfort seats, Delta did not allow me (or anyone) to choose their seat. The agent assigned them for everyone just prior to boarding. Self seat selection was allowed on the original flight. Flight staff was great - very friendly.

Flight attendants were great. Cheerful, upbeat and friendly. Jet, in particular, was fantastic.

I have Precheck. Flew HPN to DEN and return this past weekend. Delta didn't attach my Precheck number to this trip. So it was waiting in general line especially in Denver. Unavailable.

Original flight was delayed, then cancelled and the gate staff did not expedite rebooking. Also, no instructions were given that a ticket number was needed before being called to facilitate rebooking. This could have been much more organized.

Be on time? When not on time a circling for over an hour offer more than 1 bag of chips to the passengers? It was a 7 hour flight by the time we got done.

Five hour delays every hour, I wish it were all at once

Flight delayed four separate times. I’m now one hour hours late to landing.

technology worked well and everything ran smoothly. The seats are quite cramped so please don't try to re-engineer the cabin to squeeze more bodies on board.

Delayed flight more than I hour. When boarding we spent some additional time on the plane before takeoff ....

Flight was delayed due to connecting passengers. Lack of snack options bad. Sitting in Aisle, last cart run pulled the cart directly into my knee. Rude awakening.

We sat on plane at gate delayed without communication as to why we were just sitting there

Agency very bad had to cancelled my booking too many changes in the flight changed my flight to 1 week

Trash. Sat on the runway for 40 mins…missed connecting flight because of it now I’m stuck. Thanks…a whole fkn lot.

The flight was delayed significantly and we sat on runway after landing for awhile. Best thing was the flight attendant, Jenny, in first class, who was very professional and attentive. She was excellent - the rest of the flight was not.

Awfully rude American worker at door when we started boarding flight. Then, walk into a blazing hot airplane with no air conditioning until twenty minutes into the flight. Free entertainment was non existent! My husband, along with the fellow passenger in our row, and I could not get entertainment to work, no WIFI! Really?? Been flying American a long time. Was very disappointed.

Flight was delayed by 6 hours... the level of incompetence was truly astounding. I won't be flying American Airlines again. I don't care if AA is direct and there is a layover with another airline, I'll take the layover.

Leave on time. We waited on the plane for hour hours and it was hot and smelly

There weren't enough employees at check in took awhile to get bags checked. There wasn't a wheel chair for me, I was sent to someone who turns out to work for a different airline, if My flight hadn't been delayed I probably would have missed my flight as it was, by the time I arrived at my gate, they started boarding in about 15 minutes. I don't know who took me to my gate, definitely was not the normal people who take passengers to the gate. I'm guessing she may have been in a management position. I wish I knew her name, she went beyond to help me. With that said everyone was kind, and were doing the best they could. So, I choose to say it was an Adventure, stressful start, but good. In the end went well. The situation was not only difficult for passengers but the employee's.

The staff at the check in counter was so rude. Made you feel Incompetent

Frontier scheduled a 40 minute connection in DEN. What they failed to mention was that they “close the doors” 20 mins prior to departure, which means you only have 20 mins. Not enough time. Possibly against DOT regulations. Filing complaint.

Flight was scheduled at 9:40pm. Got delayed to 10 am, the next day. crazy

The bag check, flight check-in, and onboard experience convinced my wife and me that we will actively go out of our way to avoid flying Frontier Airlines in the future. At bag check, we were informed that check-in could only be completed via the Frontier mobile app. Unfortunately, the app was extremely frustrating—sending us through repetitive, confusing loops that repeatedly forced us to decline add-on services with nearly every click. While most airline apps upsell, this one felt intentionally exhausting. As the process dragged on, we became genuinely concerned that my phone battery would die before check-in could be completed. We approached the bag check staff—who were standing together talking—and explained both our frustration and our predicament. They laughed. Later, my wife described the interaction as “gaslighting,” which felt accurate. We were then informed it would cost $25 per person simply to have our boarding passes printed. From that point forward, the tone of the experience was consistently hostile. The bag check employees were condescending and combative, behaving more like bullies than customer service staff. Unfortunately, that same attitude continued onboard. One flight attendant argued with me when I attempted to stow my backpack in the overhead bin. I explained that we had each paid $75 to check our bags specifically so we would not need to use carry-on space and could have adequate legroom. She demanded to see my ticket, pointed out that it said “no carry-on”—which I acknowledged—and I reiterated that this was precisely why we paid to check our bags. Her response was, “I don’t make the rules.” She then walked away, but not before asking if I “truly wanted to fly back to Chicago today?”—an unnecessary and unmistakable threat. It is also worth noting that despite booking our tickets together in the same transaction, we were not seated together. Upon our return to Chicago—where we could once again sit together—we compared onboard experiences. We both remarked on how unhappy the flight attendants appeared and how each of us was separately asked whether we would like to purchase a beverage. We declined. At no point was water mentioned as an option, leaving us with the clear impression that even water came at a cost—or that complimentary water, if available at all, was deliberately left unmentioned. Overall, the experience was shocking and deeply disappointing, but it was also a profound learning experience—one we will not forget and will not repeat. -Steve

Plane was hot and miserable and the crew was rude!

12 hour delay required getting on and off plane 3 times - would have at least liked to have been offered a snack or drink

They didn’t offer a water, even after I asked

They switched our terminal 3 times and we were delayed for four plus hours!!!

It was an early flight and most people napped/slept and the crew let us which was nice.

Everything you need to know for your flight from St. Louis to Salt Lake City

Information on your arrival and departure airports