$62+ 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 2/12. Fares are subject to change and may not be available on all flights or dates of travel.
SLC — ORD
Feb 7 — Feb 141
1 adult, Economy
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Find cheap flights from Utah to Illinois with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.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 8, 2026.
Most accurate provider | CheapOair 3 stars |
|---|---|
Most trusted provider | CheapOair 3 stars |
Round-trip from | $131 (Kiwi.com) |
One-way from | $62 (Trip.com) |
Popular in | December |
Cheapest in | September |
Average price | $298 |
Good round-trip deal | $380 or less |
Good one-way deal | $209 or less |
Find flight deals from Utah to Illinois
Cheapest flights from Utah to IllinoisExplore 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 8, 2026.
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 8, 2026.
This Kiwi.com deal was found by Cheapflights users on 1/7. 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 1/229:19 pmSLC - STL
1 stop20h 25mFrontier
Mon 1/261:40 pmSTL - SLC
1 stop11h 34mFrontier
Deal found 1/7![Frontier logo]()
$131
This Kiwi.com deal was found by Cheapflights users on 1/8. 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 1/299:19 pmSLC - STL
1 stop20h 25mFrontier
Mon 2/21:40 pmSTL - SLC
1 stop20h 04mFrontier
Deal found 1/8![Frontier logo]()
$133
This Orbitz deal was found by Cheapflights users on 1/7. 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.
Wed 2/258:00 amSLC - STL
1 stop6h 53mFrontier
Sat 2/286:41 pmSTL - SLC
1 stop14h 49mFrontier
Deal found 1/7![Frontier logo]()
$136
This Kiwi.com deal was found by Cheapflights users on 1/7. 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 1/306:20 amSLC - STL
1 stop11h 24mFrontier
Sun 2/19:32 pmSTL - SLC
1 stop14h 18mFrontier
Deal found 1/7![Frontier logo]()
$145
This Kiwi.com deal was found by Cheapflights users on 1/6. 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.
Sun 2/19:40 pmSLC - STL
1 stop14h 10mFrontier
Thu 2/510:01 pmSTL - SLC
1 stop14h 04mFrontier
Deal found 1/6![Frontier logo]()
$146
This Kiwi.com deal was found by Cheapflights users on 1/6. 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 1/306:31 pmSLC - STL
1 stop19h 15mFrontier
Mon 2/21:40 pmSTL - SLC
1 stop20h 04mFrontier
Deal found 1/6![Frontier logo]()
$152
This Frontier deal was found by Cheapflights users on 1/6. 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.
Wed 2/48:35 amSLC - STL
1 stop5h 11mFrontier
Mon 2/91:40 pmSTL - SLC
1 stop11h 34mFrontier
Deal found 1/6![Frontier logo]()
$154
This Kiwi.com deal was found by Cheapflights users on 1/6. 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 2/69:19 pmSLC - STL
1 stop16h 27mFrontier
Sun 2/89:32 pmSTL - SLC
1 stop14h 18mFrontier
Deal found 1/6![Frontier logo]()
$157
This Kiwi.com deal was found by Cheapflights users on 1/7. 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 2/56:31 pmSLC - STL
1 stop23h 13mFrontier
Sun 2/812:03 pmSTL - SLC
1 stop13h 11mFrontier
Deal found 1/7![Frontier logo]()
$159
This Kiwi.com deal was found by Cheapflights users on 1/7. 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 2/26:20 amSLC - STL
1 stop5h 30mFrontier
Fri 2/67:39 pmSTL - SLC
1 stop14h 05mFrontier
Deal found 1/7![Frontier logo]()
$160
This Kiwi.com deal was found by Cheapflights users on 1/6. 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 1/229:19 pmSLC - STL
1 stop20h 25mFrontier
Wed 1/285:42 pmSTL - SLC
2 stops31h 32mFrontier
Deal found 1/6![Frontier logo]()
$162
This Kiwi.com deal was found by Cheapflights users on 1/7. 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 1/306:20 amSLC - STL
1 stop11h 24mMultiple Airlines
Sun 2/19:32 pmSTL - SLC
2 stops20h 11mMultiple Airlines
Deal found 1/7![Multiple Airlines logo]()
$167
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 8, 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 1/22
9:19 pm-6:44 pm
1 stop20h 25m
Lambert-St Louis
Mon 1/26
1:40 pm-12:14 am
1 stop11h 34m
$131
Salt Lake CitySt. Louis
SLC - STL
SLCSTL
Salt Lake City
Fri 1/30
6:20 am-6:44 pm
1 stop11h 24m
Lambert-St Louis
Mon 2/2
1:40 pm-8:44 am
1 stop20h 04m
$133
Salt Lake CitySt. Louis
SLC - STL
SLCSTL
Salt Lake City
Fri 1/30
6:20 am-6:44 pm
1 stop11h 24m
Lambert-St Louis
Sun 2/1
9:32 pm-10:50 am
1 stop14h 18m
$145
Salt Lake CitySt. Louis
SLC - STL
SLCSTL
Salt Lake City
Mon 2/2
6:20 am-12:50 pm
1 stop5h 30m
Lambert-St Louis
Fri 2/6
7:39 pm-8:44 am
1 stop14h 05m
$160
Salt Lake CitySt. Louis
SLC - STL
SLCSTL
Salt Lake City
Thu 1/29
9:19 pm-6:44 pm
1 stop20h 25m
Lambert-St Louis
Mon 2/2
9:45 pm-2:29 pm
2 stops17h 44m
$162
Salt Lake CitySt. Louis
SLC - STL
SLCSTL
Salt Lake City
Wed 2/25
8:00 am-3:53 pm
1 stop6h 53m
Lambert-St Louis
Sat 2/28
2:51 pm-12:14 am
1 stop10h 23m
$180
Saint GeorgeChicago
SGU - ORD
SGUORD
Saint George
Thu 2/5
3:20 pm-9:52 pm
1 stop5h 32m
Chicago O'Hare Intl
Thu 2/12
7:15 am-2:39 pm
1 stop8h 24m
$184
Saint GeorgeChicago
SGU - ORD
SGUORD
Saint George
Fri 2/13
11:25 am-5:42 pm
1 stop5h 17m
Chicago O'Hare Intl
Mon 2/16
7:15 am-2:39 pm
1 stop8h 24m
$184
Salt Lake CitySt. Louis
SLC - STL
SLCSTL
Salt Lake City
Thu 1/22
9:19 pm-6:44 pm
1 stop20h 25m
Lambert-St Louis
Sun 1/25
9:27 pm-10:50 am
1 stop14h 23m
$198
Salt Lake CitySt. Louis
SLC - STL
SLCSTL
Salt Lake City
Fri 2/20
9:59 pm-5:46 pm
2 stops18h 47m
Lambert-St Louis
Fri 2/27
1:59 pm-12:14 am
1 stop11h 15m
$210
Showing 1-10 of 60 results
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 $71). Flying from Utah to Illinois in January is currently the most expensive (average of $258). 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 8, 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 3, 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. Monday afternoons 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 8, 2026.
The most flights from USUT to USIL are scheduled on a Thursday (31 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (6 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 8, 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.
Crew
8.6
Comfort
8.0
Boarding
8.1
Food
7.0
Overall
8.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Crew
8.6
Comfort
8.0
Boarding
8.1
Food
7.0
Overall
8.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Crew
8.6
Comfort
8.0
Boarding
8.1
Food
7.0
Overall
8.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Crew
8.6
Comfort
8.0
Boarding
8.1
Food
7.0
Overall
8.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Crew
8.6
Comfort
8.0
Boarding
8.1
Food
7.0
Overall
8.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Crew
8.6
Comfort
8.0
Boarding
8.1
Food
7.0
Overall
8.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
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.
Browse thousands of different options on Cheapflights for your next trip
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Alternative routes for Utah to Illinois
See prices for flight routes from nearby airports that may be better suited for you.
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 8, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$88 | Average$222 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$90 | Average$185 | FlexibilityNo cancel fee | On-time88% | |
| Cheapest$93 | Average$208 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$182 | Average$435 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$223 | Average$447 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$225 | Average$461 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$290 | Average$471 | FlexibilityNo cancel fee | On-time63% |