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$49+ Cheap flights from Kansas 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 10/14. Fares are subject to change and may not be available on all flights or dates of travel.
ICT — ORD
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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Cheap flight deals from Kansas to Illinois

Keep the following information in mind while searching for Kansas to Illinois flight deals. Data was last updated September 15, 2025.

Round-trip from

$97
(Southwest)

One-way from

$49
(Southwest)

Popular in

December

Cheapest in

July

Average price

$324

Good round-trip deal

$295 or less

Good one-way deal

$170 or less
From Kansas to Illinois
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One-way flight from Kansas to Illinois
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Highest demand for flights based on searches. 15% potential increase in price ($58 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($18 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Kansas to Illinois.
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Price to beat on a one-way flight from Kansas to Illinois.
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Find flight deals from Kansas to Illinois

Cheapest flights from Kansas to Illinois
Explore the most affordable flight options available from Kansas to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2025.

This Southwest deal was found by Cheapflights users on 9/15. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/165:10 amICT - STL
Nonstop1h 20mSouthwest
Mon 10/2010:20 pmSTL - ICT
Nonstop1h 25mSouthwest
Deal found 9/15$97
This Southwest deal was found by Cheapflights users on 9/13. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/165:55 amMCI - STL
Nonstop1h 05mSouthwest
Mon 10/2010:15 pmSTL - MCI
Nonstop1h 05mSouthwest
Deal found 9/13$97
This United Airlines deal was found by Cheapflights users on 9/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/112:45 pmICT - STL
1 stop4h 57mUnited Airlines
Sat 10/181:40 pmSTL - ICT
1 stop6h 13mUnited Airlines
Deal found 9/13$119
This Southwest deal was found by Cheapflights users on 9/13. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2912:05 pmTUL - MDW
Nonstop1h 45mSouthwest
Fri 10/318:25 amMDW - TUL
Nonstop1h 55mSouthwest
Deal found 9/13$133
This American Airlines deal was found by Cheapflights users on 9/13. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/76:16 pmTUL - ORD
Nonstop2h 08mAmerican Airlines
Thu 10/910:20 pmORD - TUL
Nonstop2h 02mAmerican Airlines
Deal found 9/13$133
This Southwest deal was found by Cheapflights users on 9/13. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/105:10 amICT - STL
Nonstop1h 20mSouthwest
Mon 10/1310:20 pmSTL - ICT
Nonstop1h 25mSouthwest
Deal found 9/13$134
This Southwest deal was found by Cheapflights users on 9/13. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/114:10 pmMCI - STL
Nonstop1h 05mSouthwest
Mon 10/1310:15 pmSTL - MCI
Nonstop1h 05mSouthwest
Deal found 9/13$134
This United Airlines deal was found by Cheapflights users on 9/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/1512:54 pmICT - STL
1 stop7h 52mUnited Airlines
Fri 10/175:15 amSTL - ICT
1 stop4h 59mUnited Airlines
Deal found 9/14$139
This Southwest deal was found by Cheapflights users on 9/13. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/305:30 pmTUL - MDW
1 stop7h 15mSouthwest
Tue 11/41:55 pmMDW - TUL
Nonstop1h 50mSouthwest
Deal found 9/13$143
This Kiwi.com deal was found by Cheapflights users on 9/14. 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.
Mon 11/38:28 pmMCI - STL
1 stop12h 39mFrontier
Fri 11/77:45 pmSTL - MCI
1 stop23h 48mFrontier
Deal found 9/14$152
This Southwest deal was found by Cheapflights users on 9/13. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/134:45 pmTUL - MDW
Nonstop1h 45mSouthwest
Sat 11/1510:10 amMDW - TUL
2 stops9h 30mSouthwest
Deal found 9/13$154
This Kiwi.com deal was found by Cheapflights users on 9/13. 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.
Wed 10/87:02 pmMCI - STL
1 stop14h 05mFrontier
Tue 10/147:52 pmSTL - MCI
1 stop22h 03mFrontier
Deal found 9/13$156

Cheapflights Fare Finder

 
Customize your flight search to find flights from Kansas 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 September 15, 2025.
Use the filters below to find and compare flights from Kansas to Illinois that are best for you.

Fly from

Kansas

Fly to

Illinois

Route

Depart

Return

Price

WichitaSt. Louis

ICT - STL

ICTSTL

Wichita Eisenhower National

Thu 10/16

5:10 am-6:30 am

Nonstop1h 20m

Lambert-St Louis

Mon 10/20

10:20 pm-11:45 pm

Nonstop1h 25m

$97

Kansas CitySt. Louis

MCI - STL

MCISTL

Kansas City

Tue 12/2

12:00 pm-1:00 pm

Nonstop1h 00m

Lambert-St Louis

Tue 12/9

8:20 pm-9:30 pm

Nonstop1h 10m

$97

Kansas CitySt. Louis

MCI - STL

MCISTL

Kansas City

Thu 10/16

5:55 am-7:00 am

Nonstop1h 05m

Lambert-St Louis

Mon 10/20

10:15 pm-11:20 pm

Nonstop1h 05m

$97

Kansas CitySt. Louis

MCI - STL

MCISTL

Kansas City

Thu 12/4

6:15 am-7:30 am

Nonstop1h 15m

Lambert-St Louis

Sat 12/6

5:50 pm-7:00 pm

Nonstop1h 10m

$97

Kansas CitySt. Louis

MCI - STL

MCISTL

Kansas City

Sat 10/11

4:10 pm-5:15 pm

Nonstop1h 05m

Lambert-St Louis

Mon 10/13

5:05 pm-10:50 pm

1 stop5h 45m

$107

WichitaSt. Louis

ICT - STL

ICTSTL

Wichita Eisenhower National

Sat 10/11

2:45 pm-7:42 pm

1 stop4h 57m

Lambert-St Louis

Sat 10/18

1:40 pm-7:53 pm

1 stop6h 13m

$119

TulsaChicago

TUL - ORD

TULORD

Tulsa

Tue 10/7

6:16 pm-8:24 pm

Nonstop2h 08m

Chicago O'Hare Intl

Thu 10/9

10:20 pm-12:22 am

Nonstop2h 02m

$133

TulsaChicago

TUL - MDW

TULMDW

Tulsa

Wed 10/29

12:05 pm-1:50 pm

Nonstop1h 45m

Chicago Midway

Fri 10/31

8:25 am-10:20 am

Nonstop1h 55m

$133

WichitaSt. Louis

ICT - STL

ICTSTL

Wichita Eisenhower National

Fri 10/10

5:10 am-6:30 am

Nonstop1h 20m

Lambert-St Louis

Mon 10/13

10:20 pm-11:45 pm

Nonstop1h 25m

$134

WichitaSt. Louis

ICT - STL

ICTSTL

Wichita Eisenhower National

Wed 10/15

6:00 am-7:25 am

Nonstop1h 25m

Lambert-St Louis

Fri 10/17

10:20 pm-11:45 pm

Nonstop1h 25m

$134

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 60 results
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Best time to book a flight from Kansas to Illinois

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

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

Currently, August is the cheapest month in which you can book a flight from Kansas to Illinois (average of $245). Flying from Kansas 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 KS to IL?

Find hourly flight availability from Kansas 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 September 15, 2025.

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

Weekly flight availability from Kansas to Illinois

Explore weekly flight availability from Kansas 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 September 15, 2025.

The most flights from USKS to USIL are scheduled on a Monday (27 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (18 on average).

How much does it cost to fly round-trip from Kansas 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 September 15, 2025.
Read reviews from past customers who have flown Southwest, United Airlines, and American Airlines from Kansas to Illinois. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,242 reviews

Overall

8.0

Food

7.0

Comfort

8.0

Boarding

8.1

Entertainment

7.5

Crew

8.6

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
4,242 reviews
Southwest
8.0
Very good
4,242 reviews

Overall

8.0

Food

7.0

Comfort

8.0

Boarding

8.1

Entertainment

7.5

Crew

8.6

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
8,929 reviews
Southwest
8.0
Very good
4,242 reviews

Overall

8.0

Food

7.0

Comfort

8.0

Boarding

8.1

Entertainment

7.5

Crew

8.6

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
4,242 reviews

Overall

8.0

Food

7.0

Comfort

8.0

Boarding

8.1

Entertainment

7.5

Crew

8.6

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 Kansas 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 Kansas to Illinois?

    Airlines like Southwest, United Airlines, and American Airlines fly from Kansas to Illinois in about 1h 20m. The time it takes to get you to your destination can typically vary by up to 3h 37m. There are 391 mi between Kansas and Illinois. This flight may include one or multiple stops.

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

    $49 is the cheapest one-way deal found within the past few days, from Southwest. You may also be able to find cheap deals on Delta and Frontier, with prices starting from $99 and $103, respectively.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Kansas to Illinois (average of $245). Flying from Kansas 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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Kansas to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
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Top 3 airlines flying from Kansas to Illinois

Discover the top 3 airlines that operate flights from Kansas 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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$185Average$294FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$209Average$366FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$258Average$293FlexibilityNo cancel feeOn-time63%

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