SLC - STL

$50 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 2/24. 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
41,299,237 searches in the past 7 days on KAYAK

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Filter your dealsChoose cabin class, free Wi-Fi and more.

Everything you should know

Cheapest round-trip
$128
Typical prices: $297-$564
Frontier
Wed 2/4Sat 2/7
SLC - STL • 1 stop
Cheapest non-stop
$399
Typical prices: $359-$799
Delta
Thu 2/19Mon 2/23
SLC - STL • Non-stop
Our travelers' advice
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
When to book
4 weeks
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 37% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
April
Cheapest • 7% price drop
July
Most popular
Good to know
Good to know
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+1
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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, Feb 4 - Sat, Feb 7
Frontier Logo
7:30 pm - 9:06 pm
SLC
-
STL
24h 36m
1 stop
Frontier Logo
3:46 pm - 8:40 am
STL
-
SLC
17h 54m
1 stop
$128Frontier
Mon, Feb 16 - Sat, Feb 21
Frontier Logo
6:24 am - 6:51 am
SLC
-
STL
47h 27m
2 stops
Frontier Logo
2:51 pm - 8:44 am
STL
-
SLC
18h 53m
1 stop
$157Frontier
Tue, Feb 3 - Mon, Feb 9
Frontier Logo
3:24 pm - 2:46 pm
SLC
-
STL
22h 22m
1 stop
Frontier Logo
9:45 pm - 1:33 pm
STL
-
SLC
16h 48m
1 stop
$159Frontier
Mon, Feb 16 - Sat, Feb 21
Frontier Logo
9:59 pm - 6:51 am
SLC
-
STL
31h 52m
2 stops
Frontier Logo
2:51 pm - 8:44 am
STL
-
SLC
18h 53m
1 stop
$166Frontier
Tue, Feb 10 - Fri, Feb 13
Frontier Logo
8:01 pm - 1:58 pm
SLC
-
STL
16h 57m
1 stop
Frontier Logo
10:11 pm - 1:33 pm
STL
-
SLC
16h 22m
1 stop
$167Frontier
Fri, Feb 6 - Sun, Feb 8
Frontier Logo
6:31 pm - 2:46 pm
SLC
-
STL
19h 15m
1 stop
Frontier Logo
12:03 pm - 8:44 am
STL
-
SLC
21h 41m
1 stop
$169Frontier
Wed, Feb 25 - Sat, Feb 28
Frontier Logo
8:00 am - 3:53 pm
SLC
-
STL
6h 53m
1 stop
Frontier Logo
2:51 pm - 12:14 am
STL
-
SLC
10h 23m
1 stop
$170Frontier
Sat, Jan 31 - Fri, Feb 6
Frontier Logo
7:49 pm - 11:18 am
SLC
-
STL
14h 29m
1 stop
Frontier Logo
1:03 pm - 6:51 pm
STL
-
SLC
6h 48m
1 stop
$179Frontier
Thu, Feb 5 - Mon, Feb 9
Frontier Logo
12:15 pm - 9:06 pm
SLC
-
STL
7h 51m
1 stop
Frontier Logo
1:40 pm - 12:14 am
STL
-
SLC
11h 34m
1 stop
$180Frontier
Fri, Feb 6 - Sat, Feb 7
Frontier Logo
9:19 pm - 2:46 pm
SLC
-
STL
16h 27m
1 stop
Frontier Logo
3:46 pm - 8:40 am
STL
-
SLC
17h 54m
1 stop
$189Frontier
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 February.

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 Friday, as we generally find the cheapest rates on that day for this route. On the other hand, Monday 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 Sundays 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 April, where tickets cost $389 (return) on average. On the other hand, the most expensive months are November and September, where the average cost of round-trip tickets is $513 and $434 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 4 weeks before departure, which saves you about 37% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 12 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.
Airports
SLC

For a quicker security check at SLC, use the Level 1 checkpoint, often less crowded than the main Level 2 area.

STL

Use MetroLink for easy access from STL to downtown St. Louis, avoiding rush hour traffic.

Our travel experts
Yulia Denisyuk

Yulia Denisyuk

Expert on STL

Yulia Denisyuk

Yulia Denisyuk

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.

Read more
Harriet Baskas

Harriet Baskas

Expert on SLC

Harriet Baskas

Harriet Baskas

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.

Read more

Good to know

Low seasonDecember
Cheapest flight$50
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 $50 for a one-way ticket and $128 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?

    Delta, American Airlines, and Alaska Airlines offer 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 A220-100 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?

    oneworld, Star Alliance, and SkyTeam are the airline alliances operating flights between Salt Lake City and St. Louis, with oneworld 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, Southwest or Delta?

    The two airlines most popular with KAYAK users for flights from Salt Lake City to St. Louis are Southwest and Delta. With an average price for the route of $449 and an overall rating of 8.0, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $438 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 $322 or less one-way and $597 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

Delta

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

Delta

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.
8.0
SouthwestOverall score based on 4258 reviews
8.6Crew
7.0Food
8.1Boarding
8.0Comfort
7.5Entertainment
Airline reviews

3 hour delay. Had to change plans and was still delayed.

2.0 MediocreAnonymous, Jan 2026
SFO - SAN
Read more Southwest reviews

3 hour delay. Had to change plans and was still delayed.

The staff was very friendly, professional, and courteous. The overall flight was a great experience.

The crew canceled the complementary snack and drink in anticipation of turbulence that never materialized. I was counting on the drink (water) to take the the doses of medication - prescribed for my heart condition - that were due during the flight. Since no snack or meal was served on this flight, I cannot rate the food quality. Otherwise, this flight was excellent.

Departure was delayed more than 1/2 hour while we waited for luggage (only) transfer from another flight/plane. Once approved for takeoff, the flight was excellent.

We got exit row seats both flights. Everything was running on time

The flight crew was extremely rude and especially not helpful when our flight was delayed.

Pretty seamless, just a tad bit late in taking off and landing.

Flight was fine other than there was a gate change that I was not notified of. By chance I happened to check my phone and saw the change, otherwise, we would have missed our connecting flight.

Haven’t flown on SW in years. Flight was on time departing and arriving. Served vegan butter onion flavored pretzels which were bad. Coke served was in a tiny paper cup. Crew was not engaging. Felt like they were going through the motions. Old plane, tight seats and no leg room.

Check-in, Boarding and flight were smooth. All the employees and crew was very nice and funny. They gave the kids crayons and workbooks to keep them occupied which was a big win. I’ve flown Southwest many times and that’s the first time I’ve seen that and it is a great addition.

I usually get upgraded so my experience is usually amazing. I did not get upgraded this time - which was fine - but the wifi had issues, the monitors were going in & out, & (though not Delta's fault) one of the gentlemen next to me desperately needed a shower.

The entertainment screens were not working and there was no air condition the entire flight. Very uncomfortable.

I have diamond medallion status and usually we are in comfort plus . We were in main this time ( which was fine ) and my husband wanted wine . I have at least 10 vouchers for drinks that are good for this year and next! The attendant would not take the picture of the voucher as proof and never came back to check as She asked me to pull it up on delta Wi-Fi. Instead my husband just used his Amex to buy the wine . Disappointing!!!

Food is basically Sun Chips, cookies or Cheezits. I had an exit row seat so I had plenty of room. The crew was very nice and efficient. Pilot kept us informed. Pretty good flight.

Air travel sucks. It continues to be awful for all airlines. No shame on delta alone.

It was Delta, but the flight attendants were stressful and disrespectful. I am a diamond member a travel weekly. I have not had a negative thing to share in quite some time. But this was noticeable.

Comfort Plus seat 11E seemed smaller than prior flights. The movie selection is good. Watched most of the most recent Tron movie. I'll watch the remaining part later as my movie is saved in the Delta Seatback Experience.

Flight was late from Newark to Atlanta, I asked flight attendant to please let my family of 3 out first when we landed to Atlanta because we were late for our connecting flight to Quito. She didn't and we were late for 5 minutes we couldn't board the plane and spend hours trying to get another flight with customer service for the next day.

I really liked the legroom. I am 6’4”.a at For some reason our seats were not together and using the app to fix it didn’t work. Passengers were nice enough to move for us but you should absolutely ensure a parent sits with their child.

Late delayed flight delays boarding and delays leaving and delays on arrival too. Cramped plane no room no food.

Was happy we finally got upgraded in 1st class. The seat getting old. The cushiness need some improvement.

Yet another flight in which beverage and snack service was skipped. Other that that, firmly mediocre. Landed early, to gate late due to congestion at the gates. Airline's fault or airports fault: unknown.

Miserable. They moved my seat, but canceled the next leg of my flight. I resolved the issue at my transfer, but that resulted in lost luggage that has taken days off my schedule with no resolution. Worse, they fail to interface effectively with Lufthansa, forcing me to bounce between two equally useless help desks. The apps are unable to handle the situation, the bag dropped off the tracker, and while the call centers are polite, they do not provide written information to assist with cross-airline communication.

left on time, reasonable boarding process arrived early luggage came out quickly

I like flying first class, and United has a nice one

Teeny tiny bathrooms, crew was not realistic about when we'd arrive.

Check-in, boarding and the flight from Phoenix to Houston was quick and easy. The flight from Houston to Shreveport was delayed 5 hours. It was frustrating but I think United handled it the best they could.

They lost my luggage, so, not happy. The crew was nice but my suitcases never made it, still trying to find out what happened!

The staff was hospitable and professional. The seat had a bit of wear. The winner shade was stuck 1/4 open. I received the best of both worlds. The morning sun was able to come in and blind the screen i was trying to use while at the same time it was too low to look out and enjoy the view. Rather embarrassing for a 1st class ticket.

Perfect flight. Smooth flight. Arrived 20 minutes early at destination. Excellent service.

Amazing I love American. I’ll never fly anyone else if I can help it.

I love American. I’ll never fly anyone else if I can help it.

Flight delay and multiple gate changes including a change near boarding time to another terminal, which in DFW is a pain. Pre-boarding delay and also a further delay on the ground after boarding. About an hour and a half total delay.

On the plus side, crew was attentive, drinks were cold, and in-flight entertainment selection was better than some other airlines. On the negative aide, Plane was delayed almost an hour, either no announcements from the gate crew. Biscoff cookies are gross, appreciate airlines that give a choice. Also, crew had no personality or enthusiasm at all.

Little warm on the plane and delayed for an hour

Tell the crew (when boarding) to yell at the imbeciles blocking us from walking up to scan. I promise everyone crowds around and half of us (most the time I’m group 4) have to push our way through. Your staff is awesome, the public - not so much-

Bags took over and hour to come out. Delays due to wind caused rebooking.

The flight was good. We had to spend almost an hour on the tarmac when we arrived in Dallas. Waiting for a gate. What’s the point of arriving early if you have no gate to park at?

Lower WiFi prices; allow us to see our flight on a map; more variety of drink choices.

So excited very proud first of all I wanna thank kayak all updates very professional and fast alart And amazing cabin crew so nice to me they deserve big salute

It was costly and difficult to check in. $85 to take a small suitcase with me, carry on or checked and $75 on the return trip, Plus $25 if I didn't check my self in check in $25, because I couldn't do it on the kiosk. Small very uncomfortable seats, waited on the runway for near an hour each way. It was my worst flight to date.

It was ok. It was expensive to check 2 bags ($75.00 per bag), and then it took a long time to wait for shuttle to take us from one terminal to the terminal where the plane was taking off at LAX. And all of this for a flight where we had to pay for any food or drink that was not water.

It didn’t happen. I booked it and then was told it wasn’t available and then forced to pay far higher prices for a worse option

A 630departure flight Delayed 6hours! They changed my gate, I moved to the new gate. Had our flight on the screen for 12noon departure. I go get above to eat, check screen again and the flight was gone, no notice no announcement, nothing!! They sent my bag on the flight I wasn’t on, got it back to me 3days later. Thank goodness they did refund my money but I will NEVER fly them again.

Due to weather, my flight was delayed, further delayed, then canceled. I eventually got through to a support person who helped me find a different route out of MSP, but to get to DIA, they didn't want to, but eventually did help with the connection ticket purchase. But even this replacement flight was delayed time and time again, and I would have missed my connecting flights and I didn't want to get stuck in a layover city, so after 12 hours at the airport with two young boys who were very tired, we just cancelled our plans and spent the week at home, instead of Nana's.

Plane and crew on board were fine. Everything else was terrible.

The third party booking with cheapflightsfares was awful. Kayak should NOT partner with them. They sold me a bundle including seat selection and carry-on, but did not book the carry-ons with Frontier, so I’m out of pocket for $414 more while I await resolution.

This company socks. It's fraud. They canceled our flight yesterday, and today we were late because of a really long line at the check in bag. At the rebook station, there was ton of people. The workers were all rude. I am gonna make a report to FTC.

One of the worst travel experiences I've had. Had a flight scheduled with CVG to RSW on VLSWQX this morning departing at 5:30. Two individuals at the gate and one was in training. Not her fault but she didn't have the ability to check people in resulting in at least 15 families that didn't make it on the plane because they weren't checked into the system in time. When arriving at the airport to drop off our prepaid checked bags, the bag drop off agent asked if we could check our bags at the gate because of the long line. We said no problem so arrived at the gate by 5:00. They told those people that had previously paid for checked bags to stand off to the side while they let others that either didn't have a checked bag or their bag was already on the plan through. Realizing the gate workers had an issue, they either called for help or this lady showed up late for work as she didn't arrive until 5:15. The worker who had been there training the other individual and working diligently to make sure all passengers got on board. He even said that at one point all people that are currently in line are fine but asked the person in training to stand outside the ticketing area around 5:15 to notify any late travels that the flight was in boarding process and they arrrived too late. At that point, we're sill standing off to the side with our pre-paid checked bags patiently waiting. When the new lady arrived she couldn't have been more rude. It was an awful seen. Essentially they had asked for those without an assigned seat to board last, those with pre-paid checked bag stand off to the site and any traveling with a larger items that needed to be checked at the gate (such as a stroller), wait on the side. They realized that the flight needed to leave on time so the gate attendant shut the gate. So anyone without a seat assignment, those that had pre-checked bags, and the worst one I saw was a mother with two infant children was in line with use because she was asked to stand to the side because her stroller. When they shut the door to the plan they told her she could no longer get on. Her checked bags were already on the plane with her car keys in them, and the lady told her we couldn't accept anyone else on because the door was shut. She didn't even have a way to get home from the airport. Truely evil behavior. I've flown Frontier enough to know customer service is not a top priority in the company's mission, but this was an all-time low. I'm sending this after an 18 hour drive that our family just completed to Bonita Springs . I felt really bad for the lady being trained and the other individual trying to help, but when the new lady came to the gate she was truly one of the rudest individuals I've ever met. One lady had been there since 4am but because she didn't have an assigned seat they wouldn't let her on the plan.

I loved the staff on the plane. So friendly and helpful! However, there was an argument and misunderstanding by the staff and a customer at the gate, and the staff member was being unprofessional. When we arrived in Atlanta, we waited 1.5 hrs for our luggage to arrive. When I asked the airport attendant, they said Frontier had the longest wait for luggage out of any airlines, and that they could not be held responsible for the delay.

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

Information on your arrival and departure airports