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$75+ 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 9/29. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SLC
Aug 27 — Sep 31
Wed 8/27
Wed 9/3
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 August 22, 2025.

Round-trip from

$152
(Priceline)

One-way from

$75
(Cheapflightsfares)

Popular in

December

Cheapest in

October

Average price

$320

Good round-trip deal

$277 or less

Good one-way deal

$178 or less
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. 3% potential increase in price ($12 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in August 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 August 22, 2025.

This Priceline deal was found by Cheapflights users on 8/20. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/410:49 amSTL - SLC
1 stop5h 56mFrontier
Fri 9/51:25 pmSLC - STL
1 stop6h 15mFrontier
Deal found 8/20$152
This Kiwi.com deal was found by Cheapflights users on 8/21. 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.
Tue 9/167:55 pmSTL - SLC
1 stop27h 31mFrontier
Tue 9/231:42 pmSLC - STL
1 stop18h 24mFrontier
Deal found 8/21$161
This Kiwi.com deal was found by Cheapflights users on 8/21. 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 9/177:55 pmSTL - SLC
1 stop19h 30mFrontier
Fri 9/199:45 pmSLC - STL
1 stop10h 21mFrontier
Deal found 8/21$163
This Kiwi.com deal was found by Cheapflights users on 8/20. 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.
Tue 10/288:40 pmSTL - SLC
1 stop16h 00mFrontier
Thu 10/308:10 pmSLC - STL
1 stop11h 57mFrontier
Deal found 8/20$164
This Kiwi.com deal was found by Cheapflights users on 8/20. 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.
Fri 10/318:40 pmSTL - SLC
1 stop17h 39mFrontier
Mon 11/38:10 pmSLC - STL
1 stop11h 57mFrontier
Deal found 8/20$167
This Kiwi.com deal was found by Cheapflights users on 8/20. 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.
Sat 11/18:40 pmSTL - SLC
1 stop12h 52mFrontier
Tue 11/412:35 pmSLC - STL
1 stop19h 32mFrontier
Deal found 8/20$171
This Kiwi.com deal was found by Cheapflights users on 8/21. 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 9/116:00 amORD - SLC
1 stop9h 25mFrontier
Sat 9/209:58 pmSLC - ORD
1 stop10h 39mFrontier
Deal found 8/21$177
This Kiwi.com deal was found by Cheapflights users on 8/20. 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 9/117:55 pmSTL - SLC
1 stop5h 19mFrontier
Mon 9/159:45 pmSLC - STL
1 stop10h 21mFrontier
Deal found 8/20$178
This Kiwi.com deal was found by Cheapflights users on 8/21. 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.
Tue 9/99:00 amORD - SLC
1 stop9h 15mMultiple Airlines
Fri 9/128:44 pmSLC - ORD
1 stop14h 07mMultiple Airlines
Deal found 8/21$178
This Kiwi.com deal was found by Cheapflights users on 8/20. 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 11/107:45 pmSTL - SLC
1 stop16h 55mFrontier
Thu 11/138:10 pmSLC - STL
1 stop11h 57mFrontier
Deal found 8/20$179
This Mytrip deal was found by Cheapflights users on 8/20. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/37:20 amORD - SLC
1 stop5h 32mFrontier
Sat 9/69:58 pmSLC - ORD
1 stop10h 39mFrontier
Deal found 8/20$179
This Kiwi.com deal was found by Cheapflights users on 8/20. 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.
Sat 11/18:40 pmSTL - SLC
1 stop12h 52mFrontier
Mon 11/38:10 pmSLC - STL
1 stop11h 57mFrontier
Deal found 8/20$180

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 August 22, 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

Tue 9/16

7:55 pm-10:26 pm

1 stop27h 31m

Salt Lake City

Tue 9/23

1:42 pm-9:06 am

1 stop18h 24m

$161

St. LouisSalt Lake City

STL - SLC

STLSLC

Lambert-St Louis

Wed 9/17

7:55 pm-2:25 pm

1 stop19h 30m

Salt Lake City

Fri 9/19

9:45 pm-9:06 am

1 stop10h 21m

$163

St. LouisSalt Lake City

STL - SLC

STLSLC

Lambert-St Louis

Tue 10/28

8:40 pm-11:40 am

1 stop16h 00m

Salt Lake City

Thu 10/30

8:10 pm-9:07 am

1 stop11h 57m

$164

St. LouisSalt Lake City

STL - SLC

STLSLC

Lambert-St Louis

Fri 10/31

8:40 pm-1:19 pm

1 stop17h 39m

Salt Lake City

Mon 11/3

8:10 pm-9:07 am

1 stop11h 57m

$167

St. LouisSalt Lake City

STL - SLC

STLSLC

Lambert-St Louis

Sat 11/1

8:40 pm-8:32 am

1 stop12h 52m

Salt Lake City

Tue 11/4

12:35 pm-9:07 am

1 stop19h 32m

$171

St. LouisSalt Lake City

STL - SLC

STLSLC

Lambert-St Louis

Fri 10/17

7:52 pm-11:35 am

1 stop16h 43m

Salt Lake City

Mon 10/20

10:05 pm-9:07 am

1 stop10h 02m

$178

St. LouisSalt Lake City

STL - SLC

STLSLC

Lambert-St Louis

Thu 9/11

7:55 pm-12:14 am

1 stop5h 19m

Salt Lake City

Mon 9/15

9:45 pm-9:06 am

1 stop10h 21m

$178

St. LouisSalt Lake City

STL - SLC

STLSLC

Lambert-St Louis

Mon 11/10

7:45 pm-11:40 am

1 stop16h 55m

Salt Lake City

Thu 11/13

8:10 pm-9:07 am

1 stop11h 57m

$179

ChicagoSalt Lake City

ORD - SLC

ORDSLC

Chicago O'Hare Intl

Sat 9/20

8:25 am-7:32 am

1 stop24h 07m

Salt Lake City

Fri 9/26

1:25 pm-8:59 pm

1 stop6h 34m

$179

ChicagoSalt Lake City

ORD - SLC

ORDSLC

Chicago O'Hare Intl

Wed 9/10

7:09 pm-6:40 pm

2 stops24h 31m

Salt Lake City

Mon 9/15

4:02 pm-11:59 pm

1 stop6h 57m

$180

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/20

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, October is the cheapest month in which you can book a flight from Illinois to Utah (average of $277). Flying from Illinois to Utah in March is currently the most expensive (average of $417). 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 August 22, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Illinois to Utah as you normally would.

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 August 22, 2025.

The most flights from USIL to USUT are scheduled on a Thursday (32 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (11 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 August 22, 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
4,245 reviews

Overall

8.0

Crew

8.6

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Food

7.0

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
4,245 reviews
Southwest
8.0
Very good
4,245 reviews

Overall

8.0

Crew

8.6

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Food

7.0

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
8.0
Very good
7,981 reviews
Southwest
8.0
Very good
4,245 reviews

Overall

8.0

Crew

8.6

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Food

7.0

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
8,934 reviews
Southwest
8.0
Very good
4,245 reviews

Overall

8.0

Crew

8.6

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Food

7.0

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
10,000 reviews
Southwest
8.0
Very good
4,245 reviews

Overall

8.0

Crew

8.6

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Food

7.0

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
3,207 reviews
Southwest
8.0
Very good
4,245 reviews

Overall

8.0

Crew

8.6

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Food

7.0

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, Delta, and American Airlines can get you from Illinois to Utah in just under 6h 29m. Your travel time can differ by up to 21h 02m. Airlines will cover a distance of 1115 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 $75. However, be on the lookout for offers from Spirit Airlines and Delta, 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, October is the cheapest month in which you can book a flight from Illinois to Utah (average of $277). Flying from Illinois to Utah in March is currently the most expensive (average of $417). 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

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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 August 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$82Average$232FlexibilityNo cancel feeOn-time62%
Allegiant AirCheapest$88Average$112FlexibilityNo cancel feeOn-time88%
Spirit AirlinesCheapest$136Average$256FlexibilityNo cancel feeOn-time65%
SouthwestCheapest$148Average$449FlexibilityNo cancel feeOn-time63%
DeltaCheapest$164Average$356FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$189Average$523FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$213Average$504FlexibilityNo cancel feeOn-time69%

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