$55+ 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 3/7. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SLC
Feb 28 — Mar 71
1 adult, Economy
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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 Illinois to Utah
Cheapest flights from Illinois to UtahExplore 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 January 29, 2026.
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 January 29, 2026.
This Kiwi.com deal was found by Cheapflights users on 1/27. 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 2/282:51 pm
STL
- SLC
1 stop18h 53m
Frontier
Tue 3/109:14 pm
SLC
- STL
1 stop11h 35m
Frontier
Deal found 1/27![Frontier logo]()
$125
This Kiwi.com deal was found by Cheapflights users on 1/28. 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 2/271:59 pm
STL
- SLC
1 stop22h 46m
Frontier
Fri 3/69:14 pm
SLC
- STL
1 stop11h 35m
Frontier
Deal found 1/28![Frontier logo]()
$131
This Kiwi.com deal was found by Cheapflights users on 1/27. 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 2/271:59 pm
STL
- SLC
1 stop22h 46m
Frontier
Tue 3/109:14 pm
SLC
- STL
1 stop11h 35m
Frontier
Deal found 1/27![Frontier logo]()
$133
This Kiwi.com deal was found by Cheapflights users on 1/26. 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 2/2610:11 pm
STL
- SLC
1 stop11h 19m
Frontier
Fri 2/274:13 pm
SLC
- STL
1 stop24h 33m
Frontier
Deal found 1/26![Frontier logo]()
$136
This Kiwi.com deal was found by Cheapflights users on 1/27. 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 2/282:51 pm
STL
- SLC
1 stop18h 53m
Frontier
Sun 3/89:14 pm
SLC
- STL
1 stop11h 35m
Frontier
Deal found 1/27![Frontier logo]()
$138
This Kiwi.com deal was found by Cheapflights users on 1/27. 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 3/28:47 pm
STL
- SLC
1 stop16h 14m
Frontier
Tue 3/109:14 pm
SLC
- STL
1 stop11h 35m
Frontier
Deal found 1/27![Frontier logo]()
$140
This Kiwi.com deal was found by Cheapflights users on 1/27. 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 2/271:59 pm
STL
- SLC
1 stop22h 46m
Frontier
Tue 3/38:01 pm
SLC
- STL
1 stop18h 52m
Frontier
Deal found 1/27![Frontier logo]()
$141
This Kiwi.com deal was found by Cheapflights users on 1/28. 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 3/68:12 pm
STL
- SLC
1 stop12h 43m
Frontier
Sun 3/89:14 pm
SLC
- STL
1 stop11h 35m
Frontier
Deal found 1/28![Frontier logo]()
$144
This Kiwi.com deal was found by Cheapflights users on 1/28. 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 3/78:12 pm
STL
- SLC
1 stop11h 43m
Frontier
Fri 3/139:14 pm
SLC
- STL
1 stop11h 35m
Frontier
Deal found 1/28![Frontier logo]()
$145
This Kiwi.com deal was found by Cheapflights users on 1/28. 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 2/231:54 pm
STL
- SLC
1 stop24h 43m
Frontier
Fri 2/279:59 pm
SLC
- STL
1 stop14h 57m
Frontier
Deal found 1/28![Frontier logo]()
$146
This Kiwi.com deal was found by Cheapflights users on 1/27. 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 2/271:59 pm
STL
- SLC
1 stop22h 46m
Frontier
Sun 3/89:14 pm
SLC
- STL
1 stop11h 35m
Frontier
Deal found 1/27![Frontier logo]()
$147
This Delta deal was found by Cheapflights users on 1/26. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/132:09 pm
ORD
- SGU
1 stop5h 27m
Delta
Thu 4/238:50 am
SGU
- ORD
1 stop8h 17m
Delta
Deal found 1/26![Delta logo]()
$258
Find flight deals from Illinois to Utah
Keep the following information in mind while searching for Illinois to Utah flight deals. Data was last updated January 29, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $125 (Kiwi.com) |
One-way from | $55 (Trip.com) |
Popular in | December |
Cheapest in | October |
Average price | $470 |
Good round-trip deal | $384 or less |
Good one-way deal | $208 or less |
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 January 29, 2026.
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
Thu 2/26
10:11 pm-8:30 am
1 stop11h 19m
Salt Lake City
Thu 3/5
10:37 pm-11:19 am
1 stop11h 42m
$173
St. LouisSalt Lake City
STL - SLC
STLSLC
Lambert-St Louis
Thu 3/5
10:11 pm-7:55 am
2 stops10h 44m
Salt Lake City
Sun 3/8
9:14 pm-9:49 am
1 stop11h 35m
$218
ChicagoSaint George
ORD - SGU
ORDSGU
Chicago O'Hare Intl
Mon 4/13
2:09 pm-6:36 pm
1 stop5h 27m
Saint George
Tue 4/21
8:50 am-6:07 pm
1 stop8h 17m
$258
ChicagoSaint George
ORD - SGU
ORDSGU
Chicago O'Hare Intl
Sat 4/18
5:00 am-11:19 am
1 stop7h 19m
Saint George
Thu 4/23
4:38 pm-12:35 am
1 stop6h 57m
$258
ChicagoSaint George
ORD - SGU
ORDSGU
Chicago O'Hare Intl
Tue 4/14
7:20 am-2:42 pm
1 stop8h 22m
Saint George
Thu 4/23
5:50 am-11:51 am
1 stop5h 01m
$258
ChicagoSaint George
ORD - SGU
ORDSGU
Chicago O'Hare Intl
Tue 4/14
7:20 am-2:42 pm
1 stop8h 22m
Saint George
Sun 4/19
8:50 am-6:07 pm
1 stop8h 17m
$258
ChicagoSaint George
ORD - SGU
ORDSGU
Chicago O'Hare Intl
Mon 4/13
2:09 pm-6:36 pm
1 stop5h 27m
Saint George
Sun 4/19
8:50 am-6:07 pm
1 stop8h 17m
$258
ChicagoSaint George
ORD - SGU
ORDSGU
Chicago O'Hare Intl
Sat 4/18
7:20 am-12:36 pm
1 stop6h 16m
Saint George
Fri 4/24
1:15 pm-9:18 pm
1 stop7h 03m
$258
ChicagoSaint George
ORD - SGU
ORDSGU
Chicago O'Hare Intl
Sat 4/18
7:20 am-12:36 pm
1 stop6h 16m
Saint George
Wed 4/22
8:50 am-6:07 pm
1 stop8h 17m
$258
St. LouisSalt Lake City
STL - SLC
STLSLC
Lambert-St Louis
Wed 2/18
4:51 pm-9:49 pm
1 stop5h 58m
Salt Lake City
Sun 2/22
9:59 pm-1:09 pm
1 stop14h 10m
$260
Showing 1-10 of 60 results
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 January 29, 2026.
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 14% versus a flight at noon.
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 January 24, 2026.
Travelers seeking maximum savings on their Illinois to Utah flight should consider departing on Saturday evenings 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 January 29, 2026.
The most flights from USIL to USUT are scheduled on a Thursday (25 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (10 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 January 29, 2026.
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.
Crew
8.6
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Food
7.0
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Crew
8.6
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Food
7.0
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Crew
8.6
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Food
7.0
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Crew
8.6
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Food
7.0
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Crew
8.6
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Food
7.0
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Crew
8.6
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Food
7.0
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
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.
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.
Top 6 airlines flying from Illinois to Utah
Discover the top 6 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 January 29, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$90 | Average$240 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$101 | Average$256 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$172 | Average$352 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$202 | Average$475 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$227 | Average$489 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$300 | Average$471 | FlexibilityNo cancel fee | On-time63% |