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Illinois

$58+ Cheap flights from Utah to Illinois

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 2/24. Fares are subject to change and may not be available on all flights or dates of travel.
SLC — ORD
Feb 17 — Feb 241
Tue 2/17
Tue 2/24
1 adult, Economy
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Cheap flight deals from Utah to Illinois

Keep the following information in mind while searching for Utah to Illinois flight deals. Data was last updated January 18, 2026.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$158
(Kiwi.com)

One-way from

$58
(Trip.com)

Popular in

December

Cheapest in

September

Average price

$397

Good round-trip deal

$385 or less

Good one-way deal

$201 or less
Provider with most accurate pricing for Salt Lake City-Chicago (CHI) flight deals.
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Provider most trusted by Cheapflights users for Salt Lake City-Chicago (CHI) flights.
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From Utah to Illinois
Search Deals
One-way flight from Utah to Illinois
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($61 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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Price to beat on a round-trip flight from Utah to Illinois.
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Price to beat on a one-way flight from Utah to Illinois.
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Find flight deals from Utah to Illinois

Cheapest flights from Utah to Illinois
Explore the most affordable flight options available from Utah to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 18, 2026.

This Kiwi.com deal was found by Cheapflights users on 1/18. 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 2/1910:37 pm
SLC
-
STL
1 stop21h 49m
Frontier
Mon 2/2310:11 pm
STL
-
SLC
1 stop16h 22m
Frontier
Deal found 1/18$158
This Kiwi.com deal was found by Cheapflights users on 1/17. 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 3/59:59 pm
SLC
-
STL
1 stop10h 50m
Frontier
Sun 3/89:22 pm
STL
-
SLC
1 stop12h 53m
Frontier
Deal found 1/17$172
This Kiwi.com deal was found by Cheapflights users on 1/18. 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 2/209:59 pm
SLC
-
STL
1 stop14h 57m
Frontier
Mon 2/2310:11 pm
STL
-
SLC
1 stop16h 22m
Frontier
Deal found 1/18$175
This Frontier deal was found by Cheapflights users on 1/16. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/512:15 pm
SLC
-
STL
1 stop7h 51m
Frontier
Mon 2/91:40 pm
STL
-
SLC
1 stop11h 34m
Frontier
Deal found 1/16$180
This Kiwi.com deal was found by Cheapflights users on 1/18. 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 3/510:37 pm
SLC
-
ORD
2 stops25h 30m
Frontier
Mon 3/96:30 pm
ORD
-
SLC
1 stop14h 25m
Frontier
Deal found 1/18$194
This Kiwi.com deal was found by Cheapflights users on 1/16. 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 2/61:05 pm
SLC
-
ORD
1 stop7h 40m
Frontier
Sun 2/89:38 pm
ORD
-
SLC
1 stop14h 12m
Frontier
Deal found 1/16$195
This CheapOair deal was found by Cheapflights users on 1/16. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/199:49 pm
SLC
-
ORD
1 stop13h 09m
Frontier
Tue 3/107:39 pm
ORD
-
SLC
1 stop25h 35m
Frontier
Deal found 1/16$196
This Kiwi.com deal was found by Cheapflights users on 1/16. 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 2/276:24 am
SLC
-
ORD
1 stop6h 01m
Frontier
Mon 3/26:00 am
ORD
-
SLC
1 stop7h 01m
Frontier
Deal found 1/16$197
This Kiwi.com deal was found by Cheapflights users on 1/16. 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 3/29:59 pm
SLC
-
ORD
2 stops11h 52m
Frontier
Tue 3/107:39 pm
ORD
-
SLC
1 stop19h 12m
Frontier
Deal found 1/16$198
This Orbitz deal was found by Cheapflights users on 1/16. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/2310:59 pm
SLC
-
STL
1 stop11h 20m
Frontier
Wed 4/88:16 pm
STL
-
SLC
1 stop4h 53m
Frontier
Deal found 1/16$199
This Kiwi.com deal was found by Cheapflights users on 1/16. 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 3/69:14 pm
SLC
-
ORD
2 stops26h 07m
Frontier
Tue 3/108:55 pm
ORD
-
SLC
1 stop13h 05m
Frontier
Deal found 1/16$200
This Expedia deal was found by Cheapflights users on 1/17. 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.
Mon 1/2611:45 am
SLC
-
ORD
1 stop10h 04m
Frontier
Sat 1/318:00 am
ORD
-
SLC
1 stop6h 44m
Frontier
Deal found 1/17$201

Cheapflights Fare Finder

 
Customize your flight search to find flights from Utah to Illinois 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 January 18, 2026.
Use the filters below to find and compare flights from Utah to Illinois that are best for you.

Fly from

Utah

Fly to

Illinois

Route

Depart

Return

Price

Salt Lake CitySt. Louis

SLC - STL

SLCSTL

Salt Lake City

Thu 3/5

9:59 pm-9:49 am

1 stop10h 50m

Lambert-St Louis

Sun 3/8

9:22 pm-9:15 am

1 stop12h 53m

$172

Salt Lake CitySt. Louis

SLC - STL

SLCSTL

Salt Lake City

Fri 2/20

9:59 pm-1:56 pm

1 stop14h 57m

Lambert-St Louis

Mon 2/23

10:11 pm-1:33 pm

1 stop16h 22m

$175

Salt Lake CitySt. Louis

SLC - STL

SLCSTL

Salt Lake City

Thu 2/5

12:15 pm-9:06 pm

1 stop7h 51m

Lambert-St Louis

Mon 2/9

1:40 pm-12:14 am

1 stop11h 34m

$180

Salt Lake CitySt. Louis

SLC - STL

SLCSTL

Salt Lake City

Thu 2/19

10:37 pm-9:26 pm

1 stop21h 49m

Lambert-St Louis

Tue 2/24

3:49 pm-1:33 pm

2 stops22h 44m

$219

Salt Lake CitySt. Louis

SLC - STL

SLCSTL

Salt Lake City

Fri 2/20

9:59 pm-1:56 pm

1 stop14h 57m

Lambert-St Louis

Tue 2/24

3:49 pm-1:33 pm

2 stops22h 44m

$236

Salt Lake CityChicago

SLC - ORD

SLCORD

Salt Lake City

Thu 4/2

3:08 pm-5:39 am

1 stop13h 31m

Chicago O'Hare Intl

Sun 4/5

7:55 am-7:12 pm

1 stop12h 17m

$248

Salt Lake CityChicago

SLC - ORD

SLCORD

Salt Lake City

Wed 3/18

9:14 pm-9:43 am

1 stop11h 29m

Chicago O'Hare Intl

Sun 3/22

6:55 pm-7:55 am

2 stops38h 00m

$256

Saint GeorgeChicago

SGU - ORD

SGUORD

Saint George

Sat 3/7

5:50 am-12:19 pm

1 stop5h 29m

Chicago O'Hare Intl

Mon 3/9

1:18 pm-6:36 pm

1 stop6h 18m

$258

Saint GeorgeChicago

SGU - ORD

SGUORD

Saint George

Fri 3/20

5:13 am-11:19 am

1 stop5h 06m

Chicago O'Hare Intl

Tue 4/7

7:00 am-4:15 pm

1 stop10h 15m

$258

Saint GeorgeChicago

SGU - ORD

SGUORD

Saint George

Wed 5/6

11:45 am-8:11 pm

1 stop7h 26m

Chicago O'Hare Intl

Wed 5/13

10:00 am-4:05 pm

1 stop7h 05m

$258

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/15

Showing 1-10 of 60 results
1
2
3
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6

Best time to book a flight from Utah to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Utah 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 Utah to Illinois

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

Currently, April is the cheapest month in which you can book a flight from Utah to Illinois (average of $72). Flying from Utah to Illinois in January is currently the most expensive (average of $256). 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 UT to IL?

Find hourly flight availability from Utah to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 18, 2026.

One of the essential ways to save on airfare from Utah to Illinois is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight in the evening could potentially save you up to 55% on airfare.

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

Use this chart to determine the cheapest time to fly round-trip from Utah to Illinois. Price data was last updated on January 17, 2026.

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

Weekly flight availability from Utah to Illinois

Explore weekly flight availability from Utah to Illinois. 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 January 18, 2026.

The most flights from USUT to USIL are scheduled on a Friday (31 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (13 on average).

Reviews of airlines servicing Illinois

Get insights into the airlines that provide service to Illinois. 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 Illinois. Reviews last updated January 18, 2026.
Peruse reviews from past customers who have flown with Southwest, Delta, and United Airlines from Utah to Illinois 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
4,261 reviews

Comfort

8.0

Boarding

8.1

Crew

8.6

Entertainment

7.5

Food

7.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Southwest
8.0
Very good
4,261 reviews
Southwest
8.0
Very good
4,261 reviews

Comfort

8.0

Boarding

8.1

Crew

8.6

Entertainment

7.5

Food

7.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Delta
7.9
Good
8,075 reviews
Southwest
8.0
Very good
4,261 reviews

Comfort

8.0

Boarding

8.1

Crew

8.6

Entertainment

7.5

Food

7.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
United Airlines
7.4
Good
9,174 reviews
Southwest
8.0
Very good
4,261 reviews

Comfort

8.0

Boarding

8.1

Crew

8.6

Entertainment

7.5

Food

7.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
American Airlines
7.2
Good
11,155 reviews
Southwest
8.0
Very good
4,261 reviews

Comfort

8.0

Boarding

8.1

Crew

8.6

Entertainment

7.5

Food

7.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Frontier
5.7
Fair
3,057 reviews
Southwest
8.0
Very good
4,261 reviews

Comfort

8.0

Boarding

8.1

Crew

8.6

Entertainment

7.5

Food

7.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Related info for your journey

Find useful and relevant information for your journey from Utah to Illinois. 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 Utah to Illinois?

    Airlines like Frontier, Delta, and American Airlines fly from Utah to Illinois in about 5h 29m. The time it takes to get you to your destination can typically vary by up to 5h 21m. There are 1403 mi between Utah and Illinois. Both multi-stop and nonstop flights can be found to your destination and back.

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

    To fly one-way, consider booking your trip with Allegiant Air, which is currently one of the cheapest options available, starting at $49. Frontier flights start at $53 while deals on Spirit Airlines start at $77 one-way.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Utah to Illinois 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 Utah to Illinois?

    Currently, April is the cheapest month in which you can book a flight from Utah to Illinois (average of $72). Flying from Utah to Illinois in January is currently the most expensive (average of $256). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Utah to Illinois

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

Discover the top 7 airlines that operate flights from Utah to Illinois. 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 January 18, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$65Average$219FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$75Average$200FlexibilityNo cancel feeOn-time65%
Allegiant AirCheapest$90Average$185FlexibilityNo cancel feeOn-time88%
United AirlinesCheapest$170Average$434FlexibilityNo cancel feeOn-time69%
DeltaCheapest$203Average$442FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$227Average$460FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$290Average$471FlexibilityNo cancel feeOn-time63%

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