$79 Find Cheap Flights from Salt Lake City to Illinois - Compare and Save

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 Illinois departing on 10/21. 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.
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Cheap Flights from Salt Lake City to Illinois

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Chicago
Chicago2 stops$279
Moline
Moline1 stop$261
Peoria
Peoria1 stop$278
Bloomington
Bloomington1 stop$329
Champaign
Champaign1 stop$492
Springfield
Springfield1 stop$507
St. Louis
St. Louis1 stop$180
Chicago
Chicago2 stops$279
Moline
Moline1 stop$261
Peoria
Peoria1 stop$278
Bloomington
Bloomington1 stop$329
Champaign
Champaign1 stop$492
Springfield
Springfield1 stop$507
St. Louis
St. Louis1 stop$180

Book Cheap Salt Lake City to Illinois Plane Tickets

 
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 Illinois 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 Illinois

Wed, Jul 29 - Wed, Aug 5
Frontier Logo
6:05 am - 7:23 pm
SLC
-
STL
12h 18m
1 stop
Frontier Logo
8:08 pm - 7:31 am
STL
-
SLC
12h 23m
1 stop
$180Frontier
Tue, Aug 4 - Tue, Aug 11
Frontier Logo
8:16 am - 7:23 pm
SLC
-
STL
10h 07m
1 stop
Frontier Logo
8:08 pm - 7:31 am
STL
-
SLC
12h 23m
1 stop
$181Frontier
Wed, Aug 26 - Tue, Sep 1
American Airlines Logo
8:03 am - 4:02 pm
SLC
-
MLI
6h 59m
1 stop
American Airlines Logo
4:32 pm - 11:41 pm
MLI
-
SLC
8h 09m
1 stop
$261American Airlines
Wed, Aug 26 - Tue, Sep 1
American Airlines Logo
12:15 pm - 12:08 am
SLC
-
MLI
10h 53m
2 stops
American Airlines Logo
11:43 am - 4:06 pm
MLI
-
SLC
5h 23m
1 stop
$266American Airlines
Wed, Sep 9 - Sun, Sep 13
United Airlines Logo
10:40 am - 9:00 pm
SLC
-
MLI
9h 20m
2 stops
United Airlines Logo
5:09 pm - 10:59 pm
MLI
-
SLC
6h 50m
1 stop
$294United Airlines
Sat, Sep 26 - Tue, Sep 29
Southwest Logo
10:00 am - 2:05 pm
SLC
-
MDW
3h 05mnonstop
Southwest Logo
8:45 pm - 11:10 pm
MDW
-
SLC
3h 25mnonstop
$361Southwest
Sat, Aug 15 - Mon, Aug 17
Southwest Logo
2:10 pm - 10:15 pm
SLC
-
MDW
7h 05m
1 stop
Southwest Logo
8:35 pm - 11:00 pm
MDW
-
SLC
3h 25mnonstop
$365Southwest
Tue, Aug 4 - Tue, Aug 4
Delta Logo
6:00 am - 12:39 pm
SLC
-
MDW
5h 39m
1 stop
Delta Logo
5:10 pm - 11:47 pm
MDW
-
SLC
7h 37m
1 stop
$381Delta
Wed, Aug 26 - Sat, Aug 29
United Airlines Logo
8:10 am - 2:57 pm
SLC
-
PIA
5h 47m
1 stop
United Airlines Logo
3:35 pm - 10:59 pm
PIA
-
SLC
8h 24m
1 stop
$409United Airlines
Wed, Aug 12 - Sat, Aug 15
Delta Logo
11:35 pm - 9:23 am
SLC
-
EVV
8h 48m
1 stop
Delta Logo
3:16 pm - 9:37 pm
EVV
-
SLC
7h 21m
1 stop
$544Delta
Booking Insights

KAYAK's insights & trends for Salt Lake City to Illinois flights

Get data-powered insights and trends into flights from Salt Lake City to Illinois 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 Illinois?

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 Illinois departing in July.

What is the cheapest Salt Lake City to Illinois flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to Illinois from Salt Lake City found in the last 5 days was to Chicago, at $322 round-trip. The most popular route is from Salt Lake City (SLC) to Chicago O'Hare Intl Airport (ORD), and the cheapest round-trip airline ticket found on this route in the last 5 days was $322.

What is the cheapest time of day to fly to Illinois?

The average price for all round-trip flights from Salt Lake City to Illinois depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to Illinois is generally in the morning, when round-trip flights cost $514 on average. Morning departures are around 7% cheaper than evening flights, on average. The most expensive time of day to fly to Illinois is generally at night, which is peak travel time and where the average cost of a ticket is $626.

Can I save money by flying with a layover from Salt Lake City to Illinois?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $449, prices are generally cheapest when you fly direct.

What is the cheapest month to fly from Salt Lake City to Illinois?

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 Illinois, 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 Illinois is August, when tickets cost $40 (return) on average. On the other hand, the most expensive months are June and January, when the average cost of round-trip tickets is $197 and $168 respectively.

What’s the cheapest day of the week to fly from Salt Lake City to Illinois?

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

When flying from Salt Lake City to Illinois, you should consider leaving on a Thursday and avoid Sundays if you are looking for the best rates. For your return to Salt Lake City, you’ll find the best rates on Saturdays and the most expensive ones on Sundays.

How far in advance should I book a flight from Salt Lake City to Illinois?

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 Illinois, 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 Illinois, you should book around 4 weeks before departure, which saves you about 19% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 24 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$79
Best time to beat the crowds but there is an average 5% increase in price.
Most popular time to fly and prices are also 3% lower on average.
Flight from Salt Lake City to St. Louis

FAQs - booking Illinois flights

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

    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 Illinois.

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

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

    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 Salt Lake City to Illinois 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 Salt Lake City to Illinois?

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

Top tips for finding cheap flights to Illinois

  • Looking for a cheap flight? 25% of our users found tickets from Salt Lake City to the following destinations at these prices or less: Chicago $254 one-way - $434 round-trip

Reviews of the top 5 airlines serving from Salt Lake City to Illinois

 
See real verified KAYAK customer reviews for airlines flying from Salt Lake City to Illinois. 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 Illinois? 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 4250 reviews
7.5Entertainment
8.0Comfort
8.6Crew
8.1Boarding
7.0Food
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.

The flight was smooth. The Southwest experience has degraded overall, but this one was okay.

The checking experience in Orlando was terrible, almost missed the flight. Too many travelers and Southwest completely understaffed.

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

For the first time in a long time we had a flawless experience with Southwest. Both flights were early and no mechanical errors at all. We were shocked and pleasantly surprised 😮.

I stopped flying southwest a long time ago. I don’t care for their boarding process, especially when I have a family to try and seat together. The early bird check in made it so much easier. As long as you do that, it’s great.

Everything was very good. I will fly Southwest again soon!

Nice and easy. You can't go wrong with the value and quality or Southwest.

Flight was cancelled due to “inclement weather” even though all other carriers continued to operate as planned.

sw cancelled our flight 2 hours before we were to leave. Our bags were already checked. Only communication we had was a text that had a link to reschedule that did not work. When we finally got to front of line ticket agent said they could not get us on a flight until Wednesday. This was Sunday. 3 days. The. They stated since it was “weather” related they would not give us vouchers for food, hotel stay anything. So we had to book on a different airline costing us an extra $1000. Unacceptable.

Average seat comfort, a drink and chips were provided, early boarding because we checked a carryon at the gate was nice. Ticket pricing shenanigans, including fees to pick a seat, check a bag, and get food onboard - evidence the industry is reinvigorating last century’s strategies- destroys the experience before one ever arrives at the airport. It’s difficult to recognize any value or sustain loyalty in the end-to-end process making air travel more drudgery than pleasure.

Everything was great until I lost my water bottle and they can’t seem to locate it. I know I left it on the plane though.

Smaller plane for a longer flight than my first one. Doesn’t make sense.

Delta needs to step its game up get a more reliable internet service. Internet service was non-existent for this flight.

NEVER MADE THE FLIGHT BECAUSE DELTA SAID THEY CAN NOT

Another late night flight and MORE men belligerently drinking and yelling. I had to move from first to economy because they were so obnoxious and disruptive. Crazy to go from a cozy chair to cardboard when you were supposed to be in first. Delta allows was too much drinking which leads to belligerent behavior.

Flight was warm for first few hours and quite rough

Because I was moved to an exit row, the snacks in economy comfort, the selection of snacks was better.

The flight was an hour and a half late departing which was inconvenient

Gate agent rushed to fill hot jetway with crowd so it took over 12 minutes to go from gate to plane. Just like a discount airline Pooly prepared cabin and third time that claim of rough air prevented any cabin service. Friends on a Southwest flight at similar time had service.

1 flight cancelled Had to fly out of different city Flight at new departure city was delayed 3 hours causing us to miss connecting flights. By the time we did make it to Prague our luggage did not. Had to wait day and a half for luggage to be delivered. Customer service was not good. Agents did not arrive at gate until 5-10 minutes before boarding

Awful. Delayed flights, missed connection to Toronto. Hotel vouchers were for already booked hotels x3. Giant waste of my time

Boarding was great, and the crew were very friendly. The seats must have been a bit on the older side and you could feel some of the seat components through the padding. Also, the plugs did not work on the row's entertainment screen or charging ports. Checked bag was transferred for connecting flight, and we appreciated how early we had the connecting gate information.

Very easy ! Use the kiosk and bag drop and right to security within 10 min

Over 5 hour delay with minimal updates or ability to standby for alternative flights. During boarding and 1 hr+ wait for takeoff, seats were drenched w water from air conditioning condensation and always leftover crumbs on carpet and seats

Boarded early, left early, arrived 40 mins early! A win win for me!

These airplanes should be illegal. The seats are two tight, it is a safety issue. Wheelchair support was ridiculously slow. We almost missed our flight.

First class ticket gets you a choice of chips or nuts. . Just like economy Southwest. Also no screen in the seats. This is first class???!

All of the United employees I interacted with were professional and courteous. The aircraft was clean, the food on the flight was good. No complaints here.

Late boarding by three hours. No Wi-Fi. No screens. Cramped seats. Sitting on the tarmac for 30 minutes after landing waiting for a gate. Delay in luggage getting to baggage claim.

My luggage was not sent with us. Not sure if this is Envoy Air responsibility but that was a very BAD experience

WiFi didn’t work the entire flight. Very disappointing. Minimal food and options - sadly the state of current affairs. All other aspects of the flight were fine.

Given it’s a red-eye into Charolotte, we didn’t get any food. The survey does not include “N/A” so the rating will be skewed.

It went up and down at the right time and place. I’m happy with that outcome.

Flight was cancelled as I was in line for security. Next available flight got me to my destination 24 hrs later than the first. No refunds offered, just credit toward another flight. I booked with delta, got to my destination only 2 hrs behind my original flight schedule. Won’t be using American again.

It was a good flight - not overbooked and in time.

It was perfect in almost all ways. In fact it arrived early in both legs of my flight. The entertainment was marginal, but that was due mostly to the length of the flight. I love American!

Thankfully no connections off of this one on the day of the flight as it was delayed 90+ minutes.

Average - flew with Jet Blue internal and it was far more comfortable and better food and entertainment. Notable difference

Flight was delayed an hour. The pilot said we could deplane but that we wouldn’t be able to get back on. Luckily, my layover in ORD was 2 hours and it didn’t affect my connection. But a lot of people missed their connection and a handful of people elected to get off the plane. There were a lot of upset people and the American crew didn’t seem very sympathetic or accommodating.

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

Good for a budget airline! It was easy to get on, staff was really nice. Can’t say anything about the food or entertainment because it wasn’t available, which is fine.

Decent clean onboard experience. Okay discount airline experience. Unfortunately, any customer service interactions are difficult and unhelpful. There is no service. Also, a premium seat only gets you premium boarding if you line up first. Once they start general boarding you must go to the back of the line. Not very premium

The delay was ridiculous because nary a word escaped from the gate attendant regarding our flight status. It was a complete joke.

Plane was down graded and I lost my uncharged exit row with more leg room. No mention or offer of refund from podium. Flight attendant was nice to explain this happens often and that I could request a refund via online form submission. I did this and have heard nothing back.

Although we received an email from Kayak AND the airline, turns out we were not on Frontier’s manifest for the flight. We had to purchase tickets at the gate. Not sure where this transaction fell apart, but it did. We are now disputing the charges for the SLC to PDX flight originally booked through Kayak.

Our flight was cancelled and I spent $800 on a replacement ticket. No refund was awarded other than the cost of my original Frontier ticket. unacceptable...

The worst experience ever!!! They canceled our flight when we arrived at the airport to check in. We asked why is it canceled they told us they don’t know. No apology, very cold and rude. We had to pay for another night at the hotel, we had to call out of work. We won’t be using them anymore in the future!!!

Flying Frontier was a nightmare. From the booking through Kayak, checking in, departing and arriving, I will never recommend Kayak or Frontier.

Everything you need to know for your flight from Salt Lake City to Illinois

Information on your arrival and departure airports