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$82+ Cheap flights from Salt Lake City (SLC) 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 9/4. Fares are subject to change and may not be available on all flights or dates of travel.
SLC — ORD
ago. 19 — ago. 261
mar. 8/19
mar. 8/26
1 adult, Economy
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Cheap flight deals from Salt Lake City to Illinois

Keep the following information in mind while searching for Salt Lake City to Illinois flight deals. Data was last updated agosto 14, 2025.

Round-trip from

$155
(Frontier)

One-way from

$82
(Frontier)

Popular in

May

Cheapest in

November

Average price

$250

Good round-trip deal

$292 or less

Good one-way deal

$168 or less
From Salt Lake City to Illinois
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One-way flight from Salt Lake City to Illinois
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Highest demand for flights based on searches. 16% potential increase in price ($64 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 Salt Lake City to Illinois.
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Price to beat on a one-way flight from Salt Lake City to Illinois.
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Find flight deals from Salt Lake City to Illinois

Cheapest flights from Salt Lake City to Illinois
Explore the most affordable flight options available from Salt Lake City to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on agosto 14, 2025.

This Frontier deal was found by Cheapflights users on 8/14. 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.
jue. 9/119:45 pmSLC - STL
1 stop10h 21mFrontier
dom. 9/1410:39 amSTL - SLC
1 stop6h 06mFrontier
Deal found 8/14$155
This FlightHub deal was found by Cheapflights users on 8/13. 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.
mar. 10/288:00 amSLC - STL
1 stop24h 07mFrontier
jue. 10/3010:17 amSTL - SLC
1 stop10h 46mFrontier
Deal found 8/13$162
This Kiwi.com deal was found by Cheapflights users on 8/13. 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.
vie. 9/56:47 pmSLC - ORD
1 stop16h 04mSpirit Airlines
mar. 9/99:00 amORD - SLC
1 stop24h 34mSpirit Airlines
Deal found 8/13$163
This Orbitz deal was found by Cheapflights users on 8/14. 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.
lun. 10/69:45 pmSLC - STL
1 stop10h 22mFrontier
jue. 10/167:52 pmSTL - SLC
1 stop5h 07mFrontier
Deal found 8/14$163
This Kiwi.com deal was found by Cheapflights users on 8/14. 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.
vie. 9/1912:54 pmSLC - ORD
1 stop8h 46mFrontier
mar. 9/237:20 amORD - SLC
1 stop6h 26mFrontier
Deal found 8/14$164
This Cheapflightsfares deal was found by Cheapflights users on 8/12. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 9/209:29 amSLC - ORD
1 stop11h 03mSpirit Airlines
lun. 9/226:05 pmORD - SLC
1 stop15h 29mSpirit Airlines
Deal found 8/12$165
This FlightHub deal was found by Cheapflights users on 8/14. 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.
dom. 10/1210:05 pmSLC - STL
1 stop10h 02mFrontier
lun. 10/137:52 pmSTL - SLC
1 stop5h 07mFrontier
Deal found 8/14$165
This Kiwi.com deal was found by Cheapflights users on 8/12. 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.
mié. 9/33:02 pmSLC - ORD
1 stop12h 48mMultiple Airlines
vie. 9/56:00 amORD - SLC
1 stop6h 11mMultiple Airlines
Deal found 8/12$166
This Kiwi.com deal was found by Cheapflights users on 8/12. 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.
mié. 8/2712:52 pmSLC - ORD
1 stop7h 50mFrontier
mar. 9/27:20 amORD - SLC
1 stop5h 32mFrontier
Deal found 8/12$167
This FlightHub deal was found by Cheapflights users on 8/14. 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.
vie. 10/34:02 pmSLC - STL
1 stop16h 04mFrontier
vie. 10/109:59 pmSTL - SLC
1 stop21h 44mFrontier
Deal found 8/14$167
This Frontier deal was found by Cheapflights users on 8/14. 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.
jue. 9/1110:50 amSLC - ORD
1 stop10h 50mFrontier
dom. 9/146:00 amORD - SLC
1 stop6h 11mFrontier
Deal found 8/14$168
This Frontier deal was found by Cheapflights users on 8/14. 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.
jue. 9/1110:50 amSLC - MDW
1 stop10h 08mFrontier
lun. 9/154:48 pmMDW - SLC
1 stop8h 26mFrontier
Deal found 8/14$168

Cheapflights Fare Finder

 
Customize your flight search to find flights from Salt Lake City 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 agosto 14, 2025.
Use the filters below to find and compare flights from Salt Lake City to Illinois that are best for you.

Fly from

Salt Lake City

Fly to

Illinois

Route

Depart

Return

Price

Salt Lake CitySt. Louis

SLC - STL

SLCSTL

Salt Lake City

jue. 9/11

9:45 pm-9:06 am

1 stop10h 21m

Lambert-St Louis

jue. 9/18

10:49 am-3:45 pm

1 stop5h 56m

$155

Salt Lake CitySt. Louis

SLC - STL

SLCSTL

Salt Lake City

jue. 9/11

9:45 pm-9:06 am

1 stop10h 21m

Lambert-St Louis

dom. 9/14

10:39 am-3:45 pm

1 stop6h 06m

$155

Salt Lake CitySt. Louis

SLC - STL

SLCSTL

Salt Lake City

vie. 11/7

4:03 pm-9:07 am

1 stop16h 04m

Lambert-St Louis

dom. 11/9

10:17 am-8:03 pm

1 stop10h 46m

$162

Salt Lake CitySt. Louis

SLC - STL

SLCSTL

Salt Lake City

mar. 10/28

8:00 am-9:07 am

1 stop24h 07m

Lambert-St Louis

jue. 10/30

10:17 am-8:03 pm

1 stop10h 46m

$162

Salt Lake CityChicago

SLC - ORD

SLCORD

Salt Lake City

vie. 9/5

6:47 pm-11:51 am

1 stop16h 04m

Chicago O'Hare Intl

mar. 9/9

9:00 am-8:34 am

1 stop24h 34m

$163

Salt Lake CityChicago

SLC - ORD

SLCORD

Salt Lake City

mar. 9/9

9:29 am-9:32 pm

1 stop11h 03m

Chicago O'Hare Intl

sáb. 9/13

8:25 am-10:26 pm

1 stop15h 01m

$163

Salt Lake CitySt. Louis

SLC - STL

SLCSTL

Salt Lake City

lun. 10/6

9:45 pm-9:07 am

1 stop10h 22m

Lambert-St Louis

jue. 10/16

7:52 pm-11:59 pm

1 stop5h 07m

$163

Salt Lake CitySt. Louis

SLC - STL

SLCSTL

Salt Lake City

jue. 10/16

10:05 pm-9:07 am

1 stop10h 02m

Lambert-St Louis

vie. 10/17

7:52 pm-11:59 pm

1 stop5h 07m

$163

Salt Lake CitySt. Louis

SLC - STL

SLCSTL

Salt Lake City

lun. 9/15

9:45 pm-9:06 am

1 stop10h 21m

Lambert-St Louis

vie. 9/19

7:55 pm-12:14 am

1 stop5h 19m

$163

Salt Lake CityChicago

SLC - ORD

SLCORD

Salt Lake City

mié. 9/17

9:29 am-9:32 pm

1 stop11h 03m

Chicago O'Hare Intl

sáb. 9/20

8:25 am-10:26 pm

1 stop15h 01m

$164

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/14

Showing 1-10 of 60 results
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Best time to book a flight from Salt Lake City to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Salt Lake City 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 Salt Lake City to Illinois

What is the cheapest month to book a flight from Salt Lake City to Illinois?

Currently, August is the cheapest month in which you can book a flight from Salt Lake City to Illinois (average of $245). Flying from Salt Lake City to Illinois in March is currently the most expensive (average of $321). 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 SLC to IL?

Find hourly flight availability from Salt Lake City 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 agosto 14, 2025.

When flying from Salt Lake City to Illinois, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from Salt Lake City to Illinois

Explore weekly flight availability from Salt Lake City 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 agosto 14, 2025.

The most flights from SLC to USIL are scheduled on a Thursday (33 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (17 on average).

How much does it cost to fly round-trip from Salt Lake City to Illinois?

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 agosto 14, 2025.
Read through reviews of airlines operating flights from Salt Lake City to Illinois, such as Southwest, Delta, and United Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,244 reviews

Overall

8.0

Entertainment

7.5

Boarding

8.1

Crew

8.6

Comfort

8.0

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Southwest
8.0
Very good
4,244 reviews
Southwest
8.0
Very good
4,244 reviews

Overall

8.0

Entertainment

7.5

Boarding

8.1

Crew

8.6

Comfort

8.0

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Delta
8.0
Very good
7,980 reviews
Southwest
8.0
Very good
4,244 reviews

Overall

8.0

Entertainment

7.5

Boarding

8.1

Crew

8.6

Comfort

8.0

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
United Airlines
7.4
Good
8,916 reviews
Southwest
8.0
Very good
4,244 reviews

Overall

8.0

Entertainment

7.5

Boarding

8.1

Crew

8.6

Comfort

8.0

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,244 reviews

Overall

8.0

Entertainment

7.5

Boarding

8.1

Crew

8.6

Comfort

8.0

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Frontier
5.8
Fair
3,217 reviews
Southwest
8.0
Very good
4,244 reviews

Overall

8.0

Entertainment

7.5

Boarding

8.1

Crew

8.6

Comfort

8.0

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Related info for your journey

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

  • What airport do you fly from for flights from Salt Lake City to Illinois?

    Located just 5.7 mi from the city center, Salt Lake City (SLC) is the airport most travelers will use when flying to Illinois from Salt Lake City.

  • What are the most popular routes from Salt Lake City to Illinois?

    The most popular flight routes from Salt Lake City to Illinois are Salt Lake City - Chicago O'Hare Intl, Salt Lake City - Lambert-St Louis and Salt Lake City - Chicago Midway.

  • What are the most reliable airlines from Salt Lake City to Illinois?

    The top 3 most reliable airlines when flying from Salt Lake City to Illinois are KLM (100%), SkyWest Airlines (97%) and SWISS (95%).

  • What are the cheapest flights from Salt Lake City to Illinois?

    Looking at all options, your cheapest flight can be booked for $118. While the most popular route (Salt Lake City - Chicago O'Hare Intl) can be booked for $122 on average our data indicates $777 when flying from Salt Lake City to Illinois.

  • Can I find deals for flights from Salt Lake City to Illinois that include hotel bookings?

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

  • How can I find direct flights from Salt Lake City to Illinois?

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

  • Can I find deals for business class flights from Salt Lake City to Illinois?

    Yes. Cheapflights offers flight deals from Salt Lake City 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 Salt Lake City to Illinois?

    Currently, August is the cheapest month in which you can book a flight from Salt Lake City to Illinois (average of $245). Flying from Salt Lake City to Illinois in March is currently the most expensive (average of $321). 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 Salt Lake City to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
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Top 6 airlines flying from Salt Lake City to Illinois

Discover the top 6 airlines that operate flights from Salt Lake City 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 agosto 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$85Average$190FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$100Average$274FlexibilityNo cancel feeOn-time65%
DeltaCheapest$169Average$407FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$179Average$490FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$180Average$492FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$200Average$464FlexibilityNo cancel feeOn-time63%

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