SLC - STL

$60 Find Cheap Flights from Salt Lake City to St. Louis

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Salt Lake City to St. Louis departing on 6/8. 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 St. Louis

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Salt Lake City to St. Louis, 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 Salt Lake City to St. Louis, as well as popular online travel agencies
Travelers love KAYAK
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Everything you should know

Cheapest round-trip
$152
Typical prices: $530-$320
Frontier
Wed 6/10Tue 6/16
SLC - STL • 1 stop
Cheapest non-stop
$439
Typical prices: $568-$359
Delta
Fri 7/17Sun 7/26
SLC - STL • Non-stop
Advice from real travelers
AI-powered summary based on content written by travel experts. AI can make mistakes.
For faster checks at SLC, use the Level 1 checkpoint.
Use MetroLink from STL to avoid traffic downtown.
Expert advice
Expert advice
Expert advice
Expert advice
Nonstop flights
You can fly direct with Delta and Southwest. Average duration is 2h 52m
Direct flights
Direct flights
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Direct flights
Direct flights
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Top layover airports
Cheapest • Avg $232 (round-trip)
Shortest trip • 5h 28m (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 36% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 8% price drop
Most popular
Good to know
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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 St. Louis!
Flight Deals
Booking Insights
Expert advice
Flight Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Salt Lake City to St. Louis 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 Salt Lake City to St. Louis

Wed, Jun 10 - Tue, Jun 16
Frontier Logo
8:16 am - 7:23 pm
SLC
-
STL
10h 07m
1 stop
Frontier Logo
8:08 pm - 9:55 pm
STL
-
SLC
26h 47m
1 stop
$152Frontier
Tue, Jun 2 - Wed, Jun 3
Frontier Logo
8:23 am - 7:23 pm
SLC
-
STL
10h 00m
1 stop
Frontier Logo
8:08 pm - 7:38 am
STL
-
SLC
12h 30m
1 stop
$159Frontier
Tue, Jun 2 - Wed, Jun 3
Frontier Logo
4:29 pm - 8:55 am
SLC
-
STL
15h 26m
2 stops
Frontier Logo
8:08 pm - 7:38 am
STL
-
SLC
12h 30m
1 stop
$171Frontier
Wed, Jun 10 - Tue, Jun 16
Frontier Logo
10:50 pm - 6:18 pm
SLC
-
STL
18h 28m
2 stops
Frontier Logo
8:08 pm - 9:55 pm
STL
-
SLC
26h 47m
1 stop
$184Frontier
Fri, May 29 - Mon, Jun 1
Frontier Logo
1:32 pm - 8:11 pm
SLC
-
STL
5h 39m
1 stop
Frontier Logo
8:08 pm - 9:59 pm
STL
-
SLC
26h 51m
1 stop
$200Frontier
Fri, May 29 - Fri, Jun 5
Frontier Logo
10:54 pm - 7:23 pm
SLC
-
STL
19h 29m
1 stop
Frontier Logo
9:06 pm - 9:30 am
STL
-
SLC
13h 24m
1 stop
$205Frontier
Tue, Jul 21 - Tue, Jul 28
Frontier Logo
1:12 pm - 7:23 pm
SLC
-
STL
5h 11m
1 stop
Frontier Logo
3:34 pm - 8:22 pm
STL
-
SLC
5h 48m
1 stop
$210Frontier
Tue, Jun 23 - Sat, Jun 27
Frontier Logo
1:50 pm - 6:51 pm
SLC
-
STL
28h 01m
1 stop
Frontier Logo
7:38 pm - 7:31 am
STL
-
SLC
12h 53m
1 stop
$214Frontier
Sat, May 23 - Sat, May 30
Frontier Logo
4:29 pm - 7:23 pm
SLC
-
STL
25h 54m
1 stop
Frontier Logo
6:30 pm - 9:30 am
STL
-
SLC
16h 00m
1 stop
$216Frontier
Tue, May 19 - Mon, May 25
Frontier Logo
1:32 pm - 6:06 pm
SLC
-
STL
27h 34m
1 stop
Frontier Logo
9:06 pm - 9:30 am
STL
-
SLC
13h 24m
1 stop
$225Frontier
Booking Insights

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

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

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

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

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

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

If your flying dates are flexible, you should consider flying to St. Louis on a Thursday, as we generally find the cheapest rates on that day for this route. On the other hand, Saturday is the most expensive day to fly from Salt Lake City to St. Louis. For your return ticket, we recommend flying on a Tuesday and avoiding Mondays for the best deals.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Salt Lake City to St. Louis, 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 Salt Lake City to St. Louis is October, where tickets cost $400 (return) on average. On the other hand, the most expensive months are November and January, where the average cost of round-trip tickets is $513 and $463 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Salt Lake City to St. Louis, 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 Salt Lake City to St. Louis, you should book around 5 weeks before departure, which saves you about 36% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 23 weeks before departure.

Expert advice

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

 
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 seasonJanuary
Cheapest flight$60
Best time to beat the crowds but there is an average 6% increase in price.
Most popular time to fly and prices are also 6% lower on average.
Flight from Salt Lake City to St. Louis

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

Are your dates flexible? Find out the best times to travel from Salt Lake City to St. Louis 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 Salt Lake City to St. Louis

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

    In the last 3 days, the lowest price for a flight from Salt Lake City to St. Louis was $60 for a one-way ticket and $152 for a round-trip.

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

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

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

    Only Delta offers inflight Wi-Fi service on the Salt Lake City to St. Louis flight route.

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

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

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

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

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

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

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

    The two airlines most popular with KAYAK users for flights from Salt Lake City to St. Louis are Delta and Southwest. With an average price for the route of $496 and an overall rating of 7.9, Delta is the most popular choice. Southwest is also a great choice for the route, with an average price of $459 and an overall rating of 7.9.

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

    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 Salt Lake City to St. Louis.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to St. Louis from Salt Lake City 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 Salt Lake City to St. Louis?

    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 St. Louis with an airline and back to Salt Lake City with another airline. Booking your flights between Salt Lake City and STL 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 Salt Lake City to St. Louis?

    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 St. Louis from Salt Lake City 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 Salt Lake City to St. Louis

  • Looking for a cheap flight? 25% of our users found flights on this route for $363 or less one-way and $509 or less round-trip.

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

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

Direct departures

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

Direct returns

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

Reviews of the top 5 airlines serving from Salt Lake City to St. Louis

 
See real verified KAYAK customer reviews for airlines flying from Salt Lake City to St. Louis. 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 Salt Lake City to St. Louis? 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 4307 reviews
7.5Entertainment
8.6Crew
8.1Boarding
8.0Comfort
7.0Food
Airline reviews

Not having a five hour delay with little notice! The crew was very kind, though, and just as tired as we passengers were. The flight didn't depart until nearly 1 am...and no reason was ever given.

2.0 MediocreAnonymous, May 2026
SEA - SMF
Read more Southwest reviews

Not having a five hour delay with little notice! The crew was very kind, though, and just as tired as we passengers were. The flight didn't depart until nearly 1 am...and no reason was ever given.

The entire experience from boarding to landing was amazing! The crew were very friendly. Will definitely be back.

no service at all due to turbulence. they should've at least given us snacks, there were only 10 people on the entire flight.

First time I've had to use the disabled accommodations. And I could not have had a better experience with Southwest, i was having trouble getting from one terminal to another due to my heart failure. And the next thing I know a Southwest agent had made sure. I had a wheelchair at all my flights. Can't thank them enough.

Delayed flight, lack of information, boarding process is a mess as is the carryon luggage causing issues when leaving the plane….just a poor experience.

Comfortable. Easy. No problems. Just wish they had gf options for snacks.

The crew was very kind and made going to Hawaii relaxing and fun to look forward to! Thank you Southwest for a pleasant flight!

This leg was much better, but we did have to have a 3 hour lay o er after coming from a very exhausting hiccup with our flight from BNA to Den

We waited in the airplane for over 45 min for a southwest employee to make the flight. This cause over half the plane to miss their connecting flight in Denver. When we confronted the desk upon arrival, they told us the only flight they had was the next day leaving at 8:50 pm!!! Or they offered to get us to Burbank or LA, but after that we were on our own to get back to Santa Barbara. I paid for a flight from sba to bna bna to sba. My re entry into mom mode has been 💯 rough because of southwest mistake with my flight. And now I’m leaving to Reno tomorrow for a vballl tournament and just discovered that my leg in Vegas has me and my 3 kids on a stand by flight even though I had booked these ticket last year November!! Do better southwest!

Southwest is kind of a slum airline. It’s gotten more expensive over the years for less and less service. I am a Southwest Chase Visa card holder and was forced to choose a seat in the 26th row in the middle seat. However my wife who is a rewards member but doesn’t hold a card or anything else, gets randomly assigned a normally paid seat in row 6! How does that work?

Seats in Delta Main are unbelievably close to the seat in front of. Hard to get a backpack under the seat.

The agent at check in and at the gate were less than thrilled to be at work. I'm not a fan of Kayak's placement on the plane. I got put in the middle seat and none of my preferences were used.

In ATL they have two sets of departure screens. Follow what is on your airline's departure board - the ATL Airport Authority departure board had completely incorrect details about the gate assignment for my flight, which would have made me miss boarding.

Flight was delayed it was hot while sitting on the plane, one engine was working on the plane until they had to do some jimmy rigging down the runway in order for the other engine to charge up. It was ridiculous

The flight was very good and the staff was very friendly and helpful!

The only thing I would say is we tried to get on a standby earlier flight, but with our fair we couldn’t. That seems senseless to leave with open seats..

Very easy to use and convenient, you can perform any action within the same portal

In a world of delays, Delta was on time both ways! Boarding was fast and efficient. Staff was friendly. AND wifi worked.

WiFi didn’t work. Flight delayed 3 hours Crew members were illiterate Seat lean back did not work.

Flight was delayed, we could have been notified earlier and in a consistent manner. App was not refreshing for another passenger to get the latest flight status. We could have stayed and waited at the hotel instead of waiting at the airport had we known the flight was going to delayed for more than 5 hours. The toilet is too tight, and needs to be cleaned more frequently (every hour). The entertainment screen froze, the touch screen not responding to touch. We were upgraded to comfort, it is more comfortable than regular economy seats.

Overall a good experience, but no wifi available for free or for purchase and we got wet from condensation or other water source during descent.

Booked through Kayak Business, had a seat in middle and towards back due to booking rate, not comfortable.

Was great in general, try to respect time and excuses when slight changes have been made, appreciated!

A long delay. Don't travel late in the day.

Super friendly with lots of drink options an entertainment. Friendly crew.

Standard flight with a drinks and a snack- overall very quick flight. The flight attendants were very strict, bordered on rude.

Outstanding service, efficient & friendly crew, flight was safe, comfortable & on time

Delayed - weather wasn't bad at either end. Also sat on tarmac in ORD.

They told us yesterday APR21st that they were cleaning the plane and we got delayed. After that they said they didn't had any crew for the flight so they cancelled the flight till next day.

The crew was great. Very friendly and responsive. The plane was old, small and tight. We ran out of overhead space and I had to check. Middle seat was particularly tight.

not sure why you ask about food, I n3ver get food on flights except maybe cookies or pretzels. wifi was slow and in and out most of the flight not good.

Cancelled BOYH legs of our flight home 30 min before initial boarding

Cancelled the flight half hour before boarding. Then cancelled the connecting flight too.

Left early arrived early..right amount of talking from pilots..of course had to love the biscuit and water!

I would like a refund for the extra cost the seat I paid for. An oversized person sat next to me and I couldn’t fit on my seat and had to move to another seat.

Boarding gate at LAX was too crowded—two gates next to one another

The flight was delayed about an hour for a maintenance specialist to approve the maintenance repair

This flight was delayed but it worked in my favor because my Atlanta to Dallas flight was delayed.

This was a hard flight. 3 delays out of OKC (1 on the Tarmac). Delay in Atlanta coming to Dallas. total travel time was the equivalent of driving from OKC to Atlanta.

Like: flights are on time, good boarding process Can improve: planes are old, improve entertainment and make space more comfortable

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.

The crew acted like they had never done this and kept barking passive aggressive orders at people. + the security line + the delay + sitting on the tarmac for 2 hours + none of the apps or signage updating with correct times

More inflight connection. And leg space is horrible. And the paying for baggage I'd ridiculous!!!

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

Information on your arrival and departure airports