$53 Find Cheap Flights from Illinois to Utah

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Low seasonMay
High seasonJuly
Cheapest flight$53
Best time to beat the crowds with an average 0% drop in price.
Most popular time to fly and prices are also 8% lower on average.
Flight from St. Louis to Salt Lake City

FAQs for booking flights from Illinois to Utah

  • How does KAYAK find such low prices on flights from Illinois to Utah?

    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 Illinois to Utah.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to Utah?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Illinois to Utah 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 Illinois to Utah?

    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 from Illinois to Utah with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois to Utah?

    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 from Illinois to Utah up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • Which is the cheapest airport to fly into in Utah?

    Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in Utah is Salt Lake City Airport (SLC), with an average flight price of $241.

  • What is the cheapest day to fly to Utah?

    Based on KAYAK data, the cheapest day to fly to Utah is Friday where round-trip tickets can be as cheap as $311. On the other hand, the most expensive day to fly is Sunday, where round-trip prices are $455 on average.

  • What is the cheapest time of day to fly to Utah?

    The cheapest time of day to fly to Utah is generally in the evening, when round-trip flights cost $238 on average. Morning departures are around 77% more expensive than evening flights, on average. The most expensive time of day to fly to Utah is generally in the morning, which is peak travel time and where the average cost of a ticket is $420.

  • What is the cheapest flight to Utah?

    The cheapest ticket to Utah from Illinois found in the last 72 hours was to Provo, at $125 round-trip. The most popular route is Chicago Midway Airport (MDW) to Salt Lake City (SLC) and the cheapest round-trip airline ticket found on this route in the last 72 hours was $194.

  • What is the cheapest month to fly from Illinois to Utah?

    The cheapest month for flights from Illinois to Utah is August, when tickets cost $378 (return) on average. On the other hand, the most expensive months are June and October, when the average cost of round-trip tickets is $888 and $868 respectively.

  • How far in advance should I book a flight from Illinois to Utah?

    To get a below average price on the flight from Illinois to Utah, you should book around 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 12 weeks before departure.

  • How long is the flight to Utah?

    An average nonstop flight from Illinois to Utah takes 9h 57m, covering a distance of 1196 miles. The shortest route is St. Louis (STL) to Salt Lake City (SLC) with an average flight time of 3h 06m.

  • What are the most popular destinations in Utah?

    Based on KAYAK flight searches, the most popular destination is Salt Lake City (97% of total searches to Utah). The next most popular destinations are Saint George (2%) and Cedar City (1%). Searches for flights to Moab (0%) and to Cortez (0%) are also popular.

Reviews of the top 5 airlines serving from Illinois to Utah

 
Need help choosing which airline to fly with from Illinois to Utah? 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 4266 reviews
8.0Comfort
7.0Food
8.6Crew
7.6Entertainment
8.2Boarding
Airline reviews

Delayed flight. Nicest crew member was a SW pilot flying seated next to me who kindly move to seat the final passenger. Flight extra delayed. My cup of refreshment of ginger ale was so packed with ice it was literally 2 sips.

4.0 OkayTraci, Jun 2025OAK - SEA
Read more Southwest reviews

Delayed flight. Nicest crew member was a SW pilot flying seated next to me who kindly move to seat the final passenger. Flight extra delayed. My cup of refreshment of ginger ale was so packed with ice it was literally 2 sips.

For my birthday trip this was my second time ever flying, this trip was the best.

after landing, we stay 2 hours on the taxi way before reaching the gate The airline and the crew were good though

No trays in our seats, we sat in first row, purchased a business class fare. Had to hold our drinks and snack in our hands. No plugs for our cell phones. Had to pay for it a drink cocktail each. Seats so uncomfortable.

Flight wasn’t even full, but too many carry-ons caused us to run out of bin space. New bag fee has folks who would usually check their bags carrying on. Watching Southwest morph into Spirit/Frontier is so sad to watch

Sat on tarmac for 2 hours and then missed my connecting flight

First time traveling on Southwest since bag fees were implemented. Usual good service. Just more expensive now.

Everything was on time. I was disappointed by the front section female, African American flight attendant. I did not see her name tag or would have identified by name not race. As passengers moved to the bathroom early in flight, she would say with a disdainful tone “I have to say the seat belt light is on” then go back to her book. Better trained flight attendants say something like be careful the seat belt light is on.

Cluster mess boarding. Can't wait for SWA reserved seating. Internet didn't seem to work on the plane.

Flights delayed by 4-6 hours. Boarding was a mess and unclear. Bags were not at arrival airport and had never even been put on the plane. No idea when I’ll get them. Don’t fly into Denver!

My husband upgraded our seats and I don't know if it was due to the type of planet was or if they didn't upgrade our seats. We were supposed to be in I believe comfort seats and they were just as tight as any other seat- no leg room and we are very tall people but at least it wasn't extremely cold. My husband did put in a complaint about our seating because he paid extra and if we would have known that the space and the tightness would have been the same, we just would have gotten the emergency row emergency row seats that we normally get. We love Delta but both our flights coming home we're not good. Oh I forgot to mention that on our flight to Hawaii our luggage wheels got broke and we had to purse new luggage on vacation then we never had this problem so we didn't know protocol and reported it after we got home only for them to tell is we only had 24hrs to report the damage. Not sure what was going on with Delta this vacation trip.

My flight was extremely cold. I had a jacket and a cover was left in each seat. The cover was extremely thin and I have a disability, fibromyalgia and arthrithis and AC air is the worst. I closed my vent and my husbands vent and it still was frigid. I asked the attendant if I could get another cover and she quickly almost dismissively and totally unconcerned stating, (I quote) (one per chair) and walked off so quickly that I didn't get a chance to explain to her that I literally have adisability. I didnt want to make a seen so I set on that flight for over 5 hours in pain, joints locking up and extremely uncomfortable. When my fibromyalgia flares up my joints not only ache but they will lock up also and it takes me days to get back to my regular self even though I take medication for it. I felt like it would not have hurt anyone at all for her to just give me an extra cover because I'm sure they have all types of medical issues in people that fly every day.

After all the weather issues at least they got me to my destination the next day

My flight was canceled after being rescheduled for four days canceling my trip. Kayak and everyone affiliated with it I.e the airlines, and just fly have been excruciating to deal with. My trip to visit family had to be canceled as there was no way to make it. I am furious at all of you.

They delayed our flight because of bad weather in NY which was completely understandable. Then they cancelled our flight and a later flight that evening. The earliest we could fly was the next morning. We ended up buying last minute tickets on another airline and made it home slightly delayed but safely that evening. Delta kept saying it was weather related but if that was the case how did we make it back on another airline? The weather in NY was cloudy but not bad.

From Atlanta to Savannah - flight connection was way to short (we weren't even late landing ) and flight was already boarding when we landed - we were told we were the last on board and so we had to gate check our bags. Once we got on the plane, there were at least seven open bag spots so that was unnecessary delay. There should be better communication between the gate agent and the crew.

Crew was excellent. Comfort seats not as nice as other kinds of planes.

Not a "Delta" issue, but a JFK issue: We booked a connecting flight with 3 1/2 hours between to clearn immigration and customs. Our inbound flight (BCN to JFK) was on the taxiway 45 minutes which ate into our layover time. Immigtration was insanely quick with the CBP MPC app; however, clearing TSA (again, after we were ALREADY cleared in Spain on the inbound international flight) took over 95 minutes. This left us with 10 minutes before boarding the connecting flight (JFK to SAN) to walk to the far end of Terminal 4 and try to find food. We didn't find any food that could promise to serve us in under 10 minutes so we boarded the Delta flight after coming off a plance and an 8-hour flight knowing that we wouldn't be served any food on the next 5 1/2 hour flight. I feel like Delta needs to put pressure on the JFK TSA to open more screening stations (by our count, we saw only 5 scanners open and a line of - as we said - over 90 minutes. The insult is that we WERE ALREADY SCREENED through TSA, but as you come off one flight into the USA, you have to go through the whole process again. It seems like if you have a connecting flight, there should be a way to pass through immigration and customs without needing to return through TSA.

It was a great flight and the stewards and stewardess were all kind and accommodating!! The seats were comfortable and entertainment screen excellent!

There are 4 flights in consecutive gates with about the same departure time. Two flights were boarding at the same time. One was delayed or boarding would be happening at the same time. I am not sure what Delta and LAX need to do to have a better layout at the end of Terminal 2

Evidently, my seat had the only broken TV. I couldn’t plug it in, get it to come on, or watch anything, and of course, no one could fix it while we were on the plane. The service was good and the boarding was quick

It was fine, definitely older planes with no charging or anything. There’s no entertainment set up on board, but it is nice that they allow you to access the in flight entertainment from your phone without having to pay for the Wi-Fi and they do offer free texting.

I was charged for my daughters bag when I am supposed to receive two free checked bags with my United Explorer card.

The schedule to Moline changed 5 times. The gate changed 6 times. That is a pathetic way to run an airline. No wonder that no one in our company flies on United Express to or from Moline. Changes happen most of the time. I learned my lesson on this trip…never again!

Flight was great. Efficient boarding. Short flight. Early arrival. Friendly flight crew. The entertainment system did not work well. Could not access it until the aircraft reached 10K feet or more. Lots of glitches.

A bit rush for transit. Food and entertainment are not available

Smooth boarding process. Early departure, smooth flight, early arrival. The entertainment package has very good recent movie options. The flight crew were friendly and professional.

My flight was scheduled for about 6:05 departure. There were 11 gate changes from 4-7pm and the flight was 3 hours delayed due to operational issues. The plane taxied around the airport for about half an hour before stopping to be de-iced. It would have been nice if we were alerted of the plan to de-ice prior to the 30 minute drive around the airport. The flight attendant was friendly, which was the only redeeming thing about this flight. As a former flight attendant for United, I was extremely disappointed.

Delays took 2hours and thirty minutes making me miss my connecting flight and make me sit in the Chicago airport for 9 hours

Had a short delay once we boarded the aircraft in Chicago, but it was fixed in no time flat then we were on our way. The pilot was able to make up the time lost and we landed 5 minute later then schedualed . Great service

I wish American Airlines would change the airline industry by loading the plane back to front instead of front to back. Planes would board so much more smoothly and quickly.

First world problems, but still… We were seated in first class and asked for a cocktail on a very short, 50 minute flight. After our drink order was taken, a half hour went by, and we noticed that every other person in the small plane had been served except for us. We got up to ask about it, the drinks finally came, then were taken away three minutes later since the flight was so short. Really strange situation, on the other hand, we were in Utah.

I have long legs, my foot was out in the aisle and when a flight attendant came walking by and I didn't notice, instead of saying "excuse me" or anything like that, she kicked my foot. Extremely rude

Excellent! The gate agents were kind enough to rebook me on an earlier flight saving me from a 6 hour layover. Even my luggage made it despite the fact that the connection was technically too narrow. The flight itself was very comfortable, roomy, and clean. Plenty of space for my carryon items with plugs to charge my phone. After a long international flight of 14 hours, this was an excellent way to end my travels!

Great experience. Flight boarded easily. Departed early. Smooth flight. Great arrival in DC--almost no taxing! Almost direct to gate from runway. Crew was terrific. Same cookies and beverages in main cabin. I did not use the entertainment system on this flight.

Most of the delay was due to weather which is not what was at issue here. One delay was due to a missing flashlight and in the end the flashlight was actually found on the plane. The entertainment system is very limited. Live TV options offer only a few channels that are not very appealing. Boarding and deplaning are always difficult. It just takes too much time to get on and off the plane. On the plus side, I missed my connecting flight, but was easily able to book a later flight from the app while enroute.

You were more on time than United. I'm so over united delays.

A thousand choices for movies and nothing to watch. I avoid 'R' rated shows and others with violence and sexual content, which results in a handful of flicks to view and I have them already.

The meals were mediocre and the alcohol selection was poor. I enjoyed the selection of movies and other entertainment.

I chatted with the captain before the flight, and similarly during the welcome announcement, he warned of a turbulent flight that may impact the in-flight service. However, once at altitude, he announced that the weather changed and he immediately turned off the seatbelt sign. But it appeared the cabin crew had already decided to take off this flight. They remained seated and then just chatted in the galley. The flight was fully catered, but only first class received service.

We’ve all seen the YouTube vids of out of control passengers. But this was an instance of a highly aggressive, bully flight attendant. Yelling in the face of a vet with PTSD who was texting their family. And no , we had not yet been instructed to put our phones in airplane mode. My suggestion is that you should pay whatever difference there is in order to avoid Frontier airlines. Additionally, after 3hrs trying to get customer service frontier offered a $25 voucher. I declined. This experience was so traumatic. To be verbally assaulted and abused by a flight attendant that has the power to say “boo” and I miss my flight ( which was to a family member’s funeral ). Frontier is unsafe and I cannot impress enough how much I discourage anyone ( esp those with any kind of disability like PTSD ) flying on Frontier.

My flight was delayed by two hours which made it so that I would miss my layover flight. I stood in line for customer service for over an hour and when I reached the agent she told me to scan a QR code and it'll give me options. I wasn't offered any help, guidance or compensation, only told that I have options but that I had to figure it all out myself. I was refunded part of the trip and had to buy an expensive same day ticket from another airline in order to get home. I will never fly Frontier again.

We were delayed three times ,and that destroyed my plans, and reservations

Very bad! No good service delayed my second connection flight

The confirmation # CK8GNW and my name was not recognized/in Frontier system. I was able to check in on Frintier app so i went to the Frontier ticket agent, at time they told me that my name/ confirmation did not show up as a purchased ticket. I had to purchase a new ticket that cost $289.00 one way.

Flight was late. Missed connecting in Denver. My new flight is more than 24 hours later and I have no room, vouchers, or compensation, and might also be bumped from the one tomorrow.

Frontier is terrible. Paid for exit row, not given exit row, refused to refund fee.

2 hour delay due to late plane, wrong size plane causing overbooking, and people getting off and on the plane after boarding was completed.

We had to wait in line over an hour just to check our bags. It's a good thing we were so early to the airport. Only one clerk was working and the line was around the corner and down the hall. No good. I felt bad for her. Not sure how she kept her sanity with all the upset people. Then we get to our gate and there is no seating. Everyone was standing. Then I realize it is not a gate at all, we still have to be shuttled to our airplane. Ugh. Then we were late taking off and missed a window of opportunity before the airport runways were shut down for some reason. (not frontier's fault the runway shut down.) The seats on the airline are crammed and there is no cushion. Never had a tighter seating arrangement while flying. My 6' 4" husband was absolutely miserable the whole time with knees digging in to the seat in front of him. You think you are getting a good deal on a ticket, and then wham! I had to pay 75 dollars for our checked bags and 75 dollars for a carry on. No other airline does that!!! And also, there is a 40 pound weight limit on checked bags... Would have been cheaper flying with another airline, and I would have at least gotten a snack and drink. Was thankful for the tiny cup of water at least.

This was one of the first frontier airline flights this spring that wasn't delayed. It actually left on time. Some of the flight crew did not look happy, they didn't smile when the passengers were boarding or getting off the plane, and the passengers initiated greetings, not the staff. To me this was an odd experience to have with any flight/airline. I had a bad experience booking this flight. The price didn't solidify until late hours into the night. Ever time I purchased the ticket, I either received a denial email or an error because the price has changed, but it was never reflected on the flyfrontier or kayak websites until way after midnight on the date of travel. This caused me anxiety and irritation with the websites. Then I noticed a mishap with my name on my voucher as I went to check in, it was incorrect. When I proceeded to correct it, Frontier had no easy, let alone free, way to remedy it. I couldn't correct my name without a $75 charge, I couldn't cancel my voucher to repurchase it with the correct name without a $100 charge, because it was too close to departure. Then calling frontier was nearly impossible to remedy the situation with a human. It's already difficult to want to choose frontier because of all the upcharges, but you feel kinda trapped into doing so because it's the more affordable airline.

Book cheap flights from Illinois to Utah

Recent round-trip flight deals

9/25Thu
1 stopFrontier
6h 06mSTL-SLC
9/29Mon
1 stopFrontier
7h 04mSLC-STL
$111
8/16Sat
1 stopFrontier
10h 03mORD-SLC
8/19Tue
1 stopFrontier
7h 50mSLC-ORD
$111
8/11Mon
nonstopSouthwest
3h 20mMDW-SLC
8/18Mon
nonstopSouthwest
3h 05mSLC-MDW
$257
8/15Fri
1 stopDelta
5h 46mORD-SGU
8/22Fri
1 stopDelta
7h 54mSGU-ORD
$258
8/23Sat
1 stopAmerican Airlines
7h 27mMLI-SLC
8/26Tue
1 stopAmerican Airlines
8h 13mSLC-MLI
$259
8/13Wed
1 stopAmerican Airlines
6h 47mPIA-SLC
8/17Sun
1 stopAmerican Airlines
6h 04mSLC-PIA
$259
8/15Fri
1 stopDelta
5h 46mORD-SGU
8/22Fri
2 stopsDelta
11h 31mSGU-ORD
$264
8/11Mon
nonstopSouthwest
3h 20mMDW-SLC
8/18Mon
1 stopSouthwest
5h 50mSLC-MDW
$267
7/16Wed
1 stopUnited Airlines
7h 52mORD-SGU
7/20Sun
1 stopUnited Airlines
5h 20mSGU-ORD
$308
7/24Thu
1 stopUnited Airlines
9h 47mORD-SGU
7/31Thu
1 stopUnited Airlines
6h 05mSGU-ORD
$333

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Recent one-way flight deals

9/4Thu
1 stopFrontier
6h 06mSTL-SLC
$53
9/4Thu
1 stopFrontier
6h 27mMDW-SLC
$53
9/16Tue
nonstopDelta
3h 31mORD-SLC
$129
9/8Mon
nonstopSouthwest
3h 25mMDW-SLC
$129
9/17Wed
1 stopDelta
8h 42mMLI-SLC
$136
8/19Tue
1 stopSouthwest
6h 55mMDW-SLC
$139
8/5Tue
1 stopAmerican Airlines
6h 50mSTL-SLC
$159
9/16Tue
1 stopAmerican Airlines
8h 07mORD-SGU
$200
9/17Wed
2 stopsUnited Airlines
15h 22mMLI-SLC
$255
8/16Sat
1 stopUnited Airlines
5h 56mMLI-SLC
$288

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Last minute flights from Illinois to Utah

Last minute flight, train and bus deals

7/7Mon
multi-stopFrontier
8h 29mORD-SLC
7/14Mon
multi-stopFrontier
8h 25mSLC-ORD
$200
7/4Fri
multi-stopFrontier
8h 30mORD-SLC
7/13Sun
multi-stopFrontier
8h 25mSLC-ORD
$219
7/4Fri
multi-stopAmerican Airlines
5h 55mMLI-SLC
7/6Sun
multi-stopAmerican Airlines
5h 31mSLC-MLI
$330
7/4Fri
multi-stopAmerican Airlines
9h 54mMLI-SLC
7/6Sun
multi-stopAmerican Airlines
5h 31mSLC-MLI
$335
7/8Tue
multi-stopUnited Airlines
7h 52mORD-SGU
7/15Tue
multi-stopUnited Airlines
7h 55mSGU-ORD
$338
7/5Sat
multi-stopUnited Airlines
6h 10mMLI-SLC
7/7Mon
multi-stopUnited Airlines
10h 52mSLC-MLI
$451
7/8Tue
nonstopSouthwest
3h 30mMDW-SLC
7/13Sun
nonstopSouthwest
3h 00mSLC-MDW
$800
7/8Tue
multi-stopSouthwest
4h 55mMDW-SLC
7/13Sun
nonstopSouthwest
3h 00mSLC-MDW
$810
7/6Sun
nonstopDelta
3h 14mSTL-SLC
7/13Sun
nonstopDelta
2h 51mSLC-STL
$849
7/6Sun
multi-stopDelta
6h 23mSTL-SLC
7/13Sun
nonstopDelta
2h 48mSLC-STL
$859

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Everything you need to know for your flight to Utah

Cabin class types available on flights to Illinois

Cabin classes available on flights to Illinois. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

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