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Cheap flights from Kansas City to Illinois from $56

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Kansas City to Illinois departing on 3/18. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Kansas City to Illinois

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
9:44 am - 5:13 pm
MCI
-
STL
7h 29m
1 stop
American Airlines Logo
5:12 am - 10:12 am
STL
-
MCI
5h 00m
1 stop
$187American Airlines
Wed, Apr 1 - Sun, Apr 5
Frontier Logo
9:24 pm - 1:09 pm
MCI
-
STL
15h 45m
1 stop
Frontier Logo
1:54 pm - 7:48 pm
STL
-
MCI
5h 54m
1 stop
$192Frontier
Thu, Feb 26 - Mon, Mar 2
American Airlines Logo
9:05 am - 1:50 pm
MCI
-
STL
4h 45m
1 stop
American Airlines Logo
4:13 pm - 11:06 pm
STL
-
MCI
6h 53m
1 stop
$195American Airlines
Sat, Feb 28 - Wed, Mar 4
Southwest Logo
5:35 pm - 11:10 pm
MCI
-
STL
5h 35m
1 stop
Southwest Logo
4:05 pm - 5:15 pm
STL
-
MCI
1h 10mnonstop
$203Southwest
Thu, Mar 26 - Mon, Mar 30
Multiple Airlines Logo
5:08 pm - 10:39 pm
MCI
-
ORD
29h 31m
1 stop
Multiple Airlines Logo
8:16 pm - 10:30 am
ORD
-
MCI
14h 14m
1 stop
$204Multiple Airlines
Fri, Mar 6 - Sun, Mar 8
Southwest Logo
1:50 pm - 6:50 pm
MCI
-
STL
5h 00m
1 stop
Southwest Logo
10:15 am - 3:30 pm
STL
-
MCI
5h 15m
1 stop
$205Southwest
Mon, Mar 23 - Tue, Mar 24
Multiple Airlines Logo
11:13 am - 2:20 pm
MCI
-
ORD
27h 07m
1 stop
Multiple Airlines Logo
4:28 pm - 10:18 am
ORD
-
MCI
17h 50m
1 stop
$208Multiple Airlines
Fri, May 1 - Sun, May 3
Delta Logo
2:10 pm - 6:52 pm
MCI
-
ORD
4h 42m
1 stop
Delta Logo
5:04 pm - 11:01 pm
ORD
-
MCI
5h 57m
2 stops
$216Delta
Tue, Apr 14 - Tue, Apr 21
United Airlines Logo
10:24 am - 4:47 pm
MCI
-
MLI
6h 23m
1 stop
United Airlines Logo
5:22 pm - 9:59 pm
MLI
-
MCI
4h 37m
1 stop
$249United Airlines
Sat, Feb 28 - Wed, Mar 4
United Airlines Logo
11:32 am - 4:47 pm
MCI
-
MLI
5h 15m
1 stop
United Airlines Logo
3:52 pm - 9:59 pm
MLI
-
MCI
6h 07m
1 stop
$374United Airlines
Fri, Feb 27 - Tue, Mar 3

Frontier flights from Kansas City to Illinois

Our best Frontier deals on Kansas City to Illinois flight tickets
Frontier
Feb 26
MCI9:24 pmKansas City
15h 45m
1 stop
STL1:09 pmLambert-St Louis
Mar 2
STL1:54 pmLambert-St Louis
5h 54m
1 stop
MCI7:48 pmKansas City
$192
Frontier
Apr 30
MCI2:15 pmKansas City
19h 35m
1 stop
ORD9:50 amChicago O'Hare Intl
May 3
ORD4:28 pmChicago O'Hare Intl
17h 50m
1 stop
MCI10:18 amKansas City
$213
Frontier
Apr 10
MCI4:31 pmKansas City
6h 08m
1 stop
ORD10:39 pmChicago O'Hare Intl
Apr 13
ORD5:15 amChicago O'Hare Intl
10h 21m
1 stop
MCI3:36 pmKansas City
$215

American Airlines flights from Kansas City to Illinois

Our best American Airlines deals on Kansas City to Illinois flight tickets
American Airlines
Apr 1
MCI9:44 amKansas City
7h 29m
1 stop
STL5:13 pmLambert-St Louis
Apr 5
STL5:12 amLambert-St Louis
5h 00m
1 stop
MCI10:12 amKansas City
$187
American Airlines
Feb 28
MCI9:05 amKansas City
4h 45m
1 stop
STL1:50 pmLambert-St Louis
Mar 4
STL4:13 pmLambert-St Louis
6h 53m
1 stop
MCI11:06 pmKansas City
$195
American Airlines
Mar 7
MCI1:58 pmKansas City
8h 47m
1 stop
ORD10:45 pmChicago O'Hare Intl
Mar 14
ORD9:40 amChicago O'Hare Intl
1h 47m
MCI11:27 amKansas City
$207

momondo Fare Finder

 
Customize your flight search to find flights from Kansas 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, momondo users made 832,500 searches. Data last updated February 15, 2026.
Use the filters below to find and compare flights from Kansas City to Illinois that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Kansas CitySt. Louis

MCI - STL

MCISTL

Kansas City

Wed 4/1

9:44 am-5:13 pm

1 stop7h 29m

Lambert-St Louis

Sun 4/5

5:12 am-10:12 am

1 stop5h 00m

$187

Kansas CitySt. Louis

MCI - STL

MCISTL

Kansas City

Thu 2/26

9:24 pm-1:09 pm

1 stop15h 45m

Lambert-St Louis

Mon 3/2

1:54 pm-7:48 pm

1 stop5h 54m

$192

Kansas CitySt. Louis

MCI - STL

MCISTL

Kansas City

Sat 2/28

9:05 am-1:50 pm

1 stop4h 45m

Lambert-St Louis

Wed 3/4

4:13 pm-11:06 pm

1 stop6h 53m

$195

Kansas CitySt. Louis

MCI - STL

MCISTL

Kansas City

Thu 3/26

5:35 pm-11:10 pm

1 stop5h 35m

Lambert-St Louis

Mon 3/30

4:05 pm-5:15 pm

Nonstop1h 10m

$203

Kansas CityChicago

MCI - ORD

MCIORD

Kansas City

Fri 3/6

5:08 pm-10:39 pm

1 stop29h 31m

Chicago O'Hare Intl

Sun 3/8

8:16 pm-10:30 am

1 stop14h 14m

$204

Kansas CitySt. Louis

MCI - STL

MCISTL

Kansas City

Mon 3/23

1:50 pm-6:50 pm

1 stop5h 00m

Lambert-St Louis

Tue 3/24

10:15 am-3:30 pm

1 stop5h 15m

$205

Kansas CityChicago

MCI - ORD

MCIORD

Kansas City

Fri 5/1

11:13 am-2:20 pm

1 stop27h 07m

Chicago O'Hare Intl

Sun 5/3

4:28 pm-10:18 am

1 stop17h 50m

$208

Kansas CityChicago

MCI - ORD

MCIORD

Kansas City

Tue 4/14

2:10 pm-6:52 pm

1 stop4h 42m

Chicago O'Hare Intl

Tue 4/21

5:04 pm-11:01 pm

2 stops5h 57m

$216

Kansas CityMoline

MCI - MLI

MCIMLI

Kansas City

Sat 2/28

10:24 am-4:47 pm

1 stop6h 23m

Moline Quad-City

Wed 3/4

5:22 pm-9:59 pm

1 stop4h 37m

$249

Kansas CityMoline

MCI - MLI

MCIMLI

Kansas City

Fri 2/27

11:32 am-4:47 pm

1 stop5h 15m

Moline Quad-City

Tue 3/3

3:52 pm-9:59 pm

1 stop6h 07m

$374

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Illinois from

How to get the cheapest flight ticket from Kansas City to Illinois

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Illinois?

The cheapest month to fly to Illinois from Kansas City is in September. Flight prices, which tend to average around $236, are often lower during this time because this is during the off-season. If you aren’t able to travel to Illinois during the month of September, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $280.

What is the cheapest day to depart on your flight to Illinois?

The cheapest day to depart from Kansas City to Illinois is on a Friday when prices can be found for as low as $590. Flights from Kansas City to Illinois on a Saturday will generally be more expensive and average around $957. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Illinois?

Our most recent data shows that the best time of day to fly to Illinois is in the morning. Flights from Kansas City to Illinois during this time can be as low as $621. Flights at noon are often more expensive with an average ticket price of $973.

What is the cheapest Kansas City to Illinois flight route?

Fly from Kansas City to Chicago Midway for the best Kansas City - Illinois flight prices

How far in advance should I book a flight to Illinois?

You are more likely to see cheaper flights to Illinois from Kansas City when booking weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around $325 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Illinois from Kansas City for as low as $157 on momondo.

What cabin class options are available on Kansas City to Illinois flights?

There are 4 cabin classes available to choose from on Kansas City to Illinois flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Cheap Kansas City to Illinois flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Kansas City to Illinois

Best Price Found

$195

Fastest flight time

1h 05m

Direct flights

Every day

Airports in Illinois

98 airports
The best one-way flight to Illinois from Kansas City in the past 72 hours is $195. The best round-trip flight deal from Kansas City to Illinois found on momondo in the last 72 hours is $296.
The fastest flight from Kansas City to Illinois takes 1h 05m
Direct flights go from Kansas City to Illinois every day.
There are 98 airports in Illinois. From Kansas City there are direct flights to Chicago Midway (MDW), Lambert-St Louis (STL).
Search flight deals

  • When did momondo last update prices for flights from Kansas City Airport to Illinois?

    Prices for flights from Kansas City Airport to Illinois refresh daily.

  • How many operators does momondo search for flights from Kansas City Airport to Illinois?

  • How old do you have to be to fly from Kansas City Airport to Illinois?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Kansas City Airport to Illinois.

  • What documentation or ID do you need to fly to Illinois?

    The travel and health documents you'll need for your trip to Illinois may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Illinois. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Kansas City to Illinois?

Best airlines flying from Kansas City to Illinois

Compare and see reviews for airlines that fly from Kansas City to Illinois with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $172Free CancellationRating
7.4
9,293 reviews
Search United Airlines flights
American AirlinesPriceFrom $188Free CancellationRating
7.2
11,295 reviews
Search American Airlines flights
SouthwestPriceFrom $214Free CancellationRating
8.0
4,285 reviews
Search Southwest flights

Why use momondo?

Why should I use momondo to find a flight deal from Kansas City to Illinois?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Kansas City to Illinois. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Kansas City to Illinois with flexible booking policies on momondo?

All flight searches from Kansas City to Illinois on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Kansas City to Illinois?

Once you have performed a search for Kansas City to Illinois flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Kansas City to Illinois right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Illinois from Kansas City. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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