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$63+ Cheap flights from Illinois to Utah

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/4. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SLC
Dec 24 — Dec 311
Wed 12/24
Wed 12/31
1 adult, Economy
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Cheap flight deals from Illinois to Utah

Keep the following information in mind while searching for Illinois to Utah flight deals. Data was last updated November 24, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$128
(Kiwi.com)

One-way from

$63
(Trip.com)

Popular in

December

Cheapest in

October

Average price

$364

Good round-trip deal

$346 or less

Good one-way deal

$155 or less
Provider with most accurate pricing for Chicago (CHI)-Salt Lake City flight deals.
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Provider most trusted by Cheapflights users for Chicago (CHI)-Salt Lake City flights.
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From Illinois to Utah
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One-way flight from Illinois to Utah
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Highest demand for flights based on searches. 4% potential increase in price ($20 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
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Average for round-trip flights in November 2025
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Price to beat on a round-trip flight from Illinois to Utah.
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Price to beat on a one-way flight from Illinois to Utah.
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Find flight deals from Illinois to Utah

Cheapest flights from Illinois to Utah
Explore the most affordable flight options available from Illinois to Utah. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 24, 2025.

This FlightHub deal was found by Cheapflights users on 11/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/2310:10 pmSTL - SLC
1 stop15h 44mFrontier
Tue 12/301:49 pmSLC - STL
1 stop25h 35mFrontier
Deal found 11/23$163
This Expedia deal was found by Cheapflights users on 11/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/247:43 pmSTL - SLC
1 stop5h 24mFrontier
Tue 12/309:07 pmSLC - STL
1 stop11h 55mFrontier
Deal found 11/23$164
This FlightHub deal was found by Cheapflights users on 11/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/87:43 pmSTL - SLC
1 stop16h 54mFrontier
Sat 12/132:38 pmSLC - STL
1 stop20h 34mFrontier
Deal found 11/23$202
This FlightHub deal was found by Cheapflights users on 11/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/87:43 pmSTL - SLC
1 stop16h 54mFrontier
Sun 12/1412:36 pmSLC - STL
1 stop8h 12mFrontier
Deal found 11/23$206
This FlightHub deal was found by Cheapflights users on 11/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/107:43 pmSTL - SLC
1 stop5h 24mFrontier
Fri 12/124:56 pmSLC - STL
1 stop16h 18mFrontier
Deal found 11/22$207
This Kiwi.com deal was found by Cheapflights users on 11/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/177:43 pmSTL - SLC
1 stop13h 29mFrontier
Thu 12/252:53 pmSLC - STL
1 stop27h 54mFrontier
Deal found 11/23$213
This Kiwi.com deal was found by Cheapflights users on 11/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/177:43 pmSTL - SLC
1 stop13h 29mFrontier
Wed 12/2410:25 pmSLC - STL
1 stop16h 59mFrontier
Deal found 11/23$217
This Kiwi.com deal was found by Cheapflights users on 11/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/157:43 pmSTL - SLC
1 stop16h 54mFrontier
Tue 12/239:07 pmSLC - STL
1 stop11h 55mFrontier
Deal found 11/23$223
This FlightHub deal was found by Cheapflights users on 11/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/255:19 pmSTL - SLC
1 stop29h 14mFrontier
Tue 12/305:33 pmSLC - STL
1 stop15h 29mFrontier
Deal found 11/22$224
This Kiwi.com deal was found by Cheapflights users on 11/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/177:43 pmSTL - SLC
1 stop13h 29mFrontier
Tue 12/2310:25 pmSLC - STL
2 stops10h 37mFrontier
Deal found 11/23$225
This FlightHub deal was found by Cheapflights users on 11/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/41:16 pmSTL - SLC
1 stop21h 09mFrontier
Sun 12/77:20 amSLC - STL
1 stop25h 54mFrontier
Deal found 11/23$227
This Kiwi.com deal was found by Cheapflights users on 11/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/117:00 amORD - SLC
1 stop5h 37mMultiple Airlines
Mon 12/154:50 pmSLC - ORD
2 stops20h 08mMultiple Airlines
Deal found 11/24$234

Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois to Utah that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated November 24, 2025.
Use the filters below to find and compare flights from Illinois to Utah that are best for you.

Fly from

Illinois

Fly to

Utah

Route

Depart

Return

Price

St. LouisSalt Lake City

STL - SLC

STLSLC

Lambert-St Louis

Sat 1/10

7:43 pm-10:53 am

1 stop16h 10m

Salt Lake City

Wed 1/14

12:40 pm-12:40 pm

1 stop23h 00m

$182

St. LouisSalt Lake City

STL - SLC

STLSLC

Lambert-St Louis

Fri 1/23

7:39 pm-8:44 am

1 stop14h 05m

Salt Lake City

Sun 1/25

10:34 pm-12:50 pm

2 stops13h 16m

$199

St. LouisSalt Lake City

STL - SLC

STLSLC

Lambert-St Louis

Sat 1/24

3:46 pm-8:40 am

1 stop17h 54m

Salt Lake City

Sun 1/25

10:34 pm-12:50 pm

2 stops13h 16m

$199

ChicagoSalt Lake City

ORD - SLC

ORDSLC

Chicago O'Hare Intl

Sat 2/21

8:20 am-11:22 pm

1 stop16h 02m

Salt Lake City

Wed 2/25

10:15 am-11:59 pm

1 stop12h 44m

$240

St. LouisSalt Lake City

STL - SLC

STLSLC

Lambert-St Louis

Thu 1/22

10:01 pm-4:58 pm

2 stops19h 57m

Salt Lake City

Sun 1/25

9:40 pm-12:50 pm

1 stop14h 10m

$242

ChicagoSalt Lake City

ORD - SLC

ORDSLC

Chicago O'Hare Intl

Wed 1/14

9:00 am-8:44 pm

1 stop12h 44m

Salt Lake City

Tue 2/3

7:14 am-11:37 pm

1 stop15h 23m

$242

ChicagoSalt Lake City

ORD - SLC

ORDSLC

Chicago O'Hare Intl

Tue 1/13

9:00 am-8:44 pm

1 stop12h 44m

Salt Lake City

Wed 2/4

7:14 am-11:37 pm

1 stop15h 23m

$242

ChicagoSaint George

ORD - SGU

ORDSGU

Chicago O'Hare Intl

Wed 1/7

6:40 pm-11:58 pm

1 stop6h 18m

Saint George

Sat 1/10

5:50 am-1:16 pm

1 stop6h 26m

$258

ChicagoSaint George

ORD - SGU

ORDSGU

Chicago O'Hare Intl

Thu 1/29

5:05 am-10:53 am

1 stop6h 48m

Saint George

Sat 1/31

5:07 am-1:55 pm

1 stop7h 48m

$258

ChicagoSaint George

ORD - SGU

ORDSGU

Chicago O'Hare Intl

Thu 12/18

7:10 am-4:25 pm

1 stop10h 15m

Saint George

Fri 12/26

5:36 pm-11:59 pm

1 stop5h 23m

$258

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/23

Showing 1-10 of 60 results
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Best time to book a flight from Illinois to Utah

Have a flexible travel schedule? Discover the best time to fly to Utah from Illinois with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Illinois to Utah

What is the cheapest month to book a flight from Illinois to Utah?

Currently, April is the cheapest month in which you can book a flight from Illinois to Utah (average of $89). Flying from Illinois to Utah in June is currently the most expensive (average of $225). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from IL to UT?

Find hourly flight availability from Illinois to Utah. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 24, 2025.

When flying from Illinois to Utah, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 41% versus a flight in the morning.

What is the cheapest day to fly from Illinois to Utah?

Use this chart to determine the cheapest time to fly round-trip from Illinois to Utah. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Illinois to Utah flight should consider departing on Friday at noon when fares are most often at their lowest. Sunday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Illinois to Utah

Explore weekly flight availability from Illinois to Utah. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated November 24, 2025.

The most flights from USIL to USUT are scheduled on a Monday (30 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (6 on average).

Reviews of airlines servicing Utah

Get insights into the airlines that provide service to Utah. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Utah. Reviews last updated November 24, 2025.
Peruse reviews from past customers who have flown with Southwest, Delta, and United Airlines from Illinois to Utah to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,252 reviews

Food

7.0

Crew

8.6

Entertainment

7.5

Boarding

8.1

Overall

8.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,252 reviews
Southwest
8.0
Very good
4,252 reviews

Food

7.0

Crew

8.6

Entertainment

7.5

Boarding

8.1

Overall

8.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Delta
7.9
Good
7,998 reviews
Southwest
8.0
Very good
4,252 reviews

Food

7.0

Crew

8.6

Entertainment

7.5

Boarding

8.1

Overall

8.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
United Airlines
7.4
Good
9,044 reviews
Southwest
8.0
Very good
4,252 reviews

Food

7.0

Crew

8.6

Entertainment

7.5

Boarding

8.1

Overall

8.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
American Airlines
7.2
Good
11,042 reviews
Southwest
8.0
Very good
4,252 reviews

Food

7.0

Crew

8.6

Entertainment

7.5

Boarding

8.1

Overall

8.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Frontier
5.8
Fair
3,096 reviews
Southwest
8.0
Very good
4,252 reviews

Food

7.0

Crew

8.6

Entertainment

7.5

Boarding

8.1

Overall

8.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Related info for your journey

Find useful and relevant information for your journey from Illinois to Utah. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Illinois to Utah?

    Frontier, Alaska Airlines, and Delta can get you from Illinois to Utah in just under 6h 18m. Your travel time can differ by up to 9h 52m. Airlines will cover a distance of 1403 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from Illinois to Utah one-way?

    The cheapest airline one-way is Frontier, with whom users have recently found tickets for as low as $100. However, be on the lookout for offers from Alaska Airlines and Southwest, as they are both options that can get you from Illinois to Utah for a low price.

  • Can I find deals for flights from Illinois to Utah that include hotel bookings?

    Yes. In addition to deals on Illinois to Utah flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Illinois to Utah?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Illinois to Utah.

  • Can I find deals for business class flights from Illinois to Utah?

    Yes. Cheapflights offers flight deals from Illinois to Utah by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Illinois to Utah?

    Currently, April is the cheapest month in which you can book a flight from Illinois to Utah (average of $89). Flying from Illinois to Utah in June is currently the most expensive (average of $225). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Illinois to Utah

See prices for flight routes from nearby airports that may be better suited for you.
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Top 7 airlines flying from Illinois to Utah

Discover the top 7 airlines that operate flights from Illinois to Utah. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated November 24, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$89Average$235FlexibilityNo cancel feeOn-time62%
Allegiant AirCheapest$102Average$201FlexibilityNo cancel feeOn-time88%
Spirit AirlinesCheapest$136Average$256FlexibilityNo cancel feeOn-time65%
DeltaCheapest$184Average$408FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$199Average$505FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$258Average$495FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$300Average$471FlexibilityNo cancel feeOn-time63%

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