What is the cheapest airline that flies from Kansas City to Illinois?

Delta, Southwest, and Frontier are the most popular carriers operating from Kansas City to Illinois

How many flights depart from Kansas City to Illinois on average per week?

The number of flights available between Kansas City and Illinois is 362 per week as of May 2026. The most frequent departure day is Tue, with 20% of weekly flights leaving on this day.

How many flights depart from Kansas City to Illinois on average per day?

As of May 2026, there are 51 flights per day flying from Kansas City to Illinois. The most common time of day flights depart is 1:00PM, with 40% of flights taking off at noon.

What airlines fly to Illinois?

United Airlines, American Airlines and Southwest are the top three most popular airlines that fly to Illinois from Kansas City according to our data. United Airlines is the first choice among our users, with 43% of people opting to fly with this airline when traveling to Illinois. Keep in mind that there are 4 different airlines that fly to Illinois on a routine basis, so you have a few additional options to choose from.

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?

The number of operators available for flights from Kansas City Airport to Illinois is 4 as of May 2026.

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.

$65 Cheap Flights from Kansas City to Illinois in 2026

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Find the cheapest flights from Kansas City to Illinois

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

1:45 pm - 7:23 pm

MCI

STL

5h 38m

1 stop

8:08 pm - 1:00 pm

STL

MCI

16h 52m

1 stop

$240Frontier

Tue, Jun 30 - Wed, Jul 15

6:07 pm - 5:37 pm

MCI

STL

23h 30m

1 stop

6:34 pm - 5:10 pm

STL

MCI

22h 36m

1 stop

$259Frontier

Mon, Jul 20 - Tue, Jul 28

6:19 pm - 11:30 pm

MCI

MLI

5h 11m

1 stop

6:08 am - 9:52 am

MLI

MCI

3h 44m

1 stop

$309American Airlines

Fri, Jul 10 - Sun, Jul 12

2:05 pm - 5:00 pm

MCI

MDW

2h 55m

1 stop

7:40 am - 1:30 pm

MDW

MCI

5h 50m

2 stops

$326Southwest

Tue, Jul 28 - Tue, Aug 4

5:08 pm - 12:01 am

MCI

ORD

6h 53m

1 stop

11:45 am - 1:30 pm

ORD

MCI

1h 45mnonstop

$327American Airlines

Sat, Aug 1 - Wed, Aug 5

8:10 am - 9:35 am

MCI

MDW

1h 25mnonstop

6:30 am - 7:55 am

MDW

MCI

1h 25mnonstop

$327Southwest

Wed, Jul 15 - Sun, Jul 19

5:40 pm - 9:52 pm

MCI

ORD

4h 12m

1 stop

6:25 am - 11:26 am

ORD

MCI

5h 01m

1 stop

$337Delta

Sat, Aug 1 - Wed, Aug 5

6:23 am - 1:09 pm

MCI

MDW

6h 46m

1 stop

9:49 am - 3:14 pm

MDW

MCI

5h 25m

1 stop

$337Delta

Tue, Jul 14 - Fri, Jul 17

5:10 pm - 9:22 pm

MCI

MLI

4h 12m

1 stop

6:30 pm - 11:13 pm

MLI

MCI

4h 43m

1 stop

$364United Airlines

Mon, Jun 8 - Sat, Jun 20

5:10 pm - 9:22 pm

MCI

MLI

4h 12m

1 stop

6:30 pm - 11:13 pm

MLI

MCI

4h 43m

1 stop

$379United Airlines

Tue, Jun 9 - Sat, Jun 13

American Airlines flights from Kansas City to Illinois

Our best American Airlines deals on Kansas City to Illinois flight tickets

American Airlines

Jul 10

MCI6:19 pmKansas City

5h 11m

1 stop

MLI11:30 pmMoline Quad-City

Jul 12

MLI6:08 amMoline Quad-City

3h 44m

1 stop

MCI9:52 amKansas City

$309

American Airlines

Aug 1

MCI5:08 pmKansas City

6h 53m

1 stop

ORD12:01 amChicago O'Hare Intl

Aug 5

ORD11:45 amChicago O'Hare Intl

1h 45m

MCI1:30 pmKansas City

$327

American Airlines

Jul 3

MCI7:46 pmKansas City

1h 52m

ORD9:38 pmChicago O'Hare Intl

Jul 5

ORD10:35 pmChicago O'Hare Intl

1h 44m

MCI12:19 amKansas City

$329

United Airlines flights from Kansas City to Illinois

Our best United Airlines deals on Kansas City to Illinois flight tickets

United Airlines

Jul 8

MCI6:00 amKansas City

6h 11m

1 stop

STL12:11 pmLambert-St Louis

Jul 8

STL5:33 pmLambert-St Louis

5h 44m

1 stop

MCI11:17 pmKansas City

$337

United Airlines

Jun 23

MCI6:41 pmKansas City

1h 48m

ORD8:29 pmChicago O'Hare Intl

Jun 30

ORD8:40 amChicago O'Hare Intl

1h 49m

MCI10:29 amKansas City

$355

United Airlines

Jun 8

MCI5:10 pmKansas City

4h 12m

1 stop

MLI9:22 pmMoline Quad-City

Jun 20

MLI6:30 pmMoline Quad-City

4h 43m

1 stop

MCI11:13 pmKansas City

$364

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Kansas CitySt. Louis

MCI - STL

MCISTL

Kansas City

Tue 6/30

1:45 pm-7:23 pm

1 stop5h 38m

Lambert-St Louis

Wed 7/15

8:08 pm-1:00 pm

1 stop16h 52m

$240

Kansas CitySt. Louis

MCI - STL

MCISTL

Kansas City

Mon 7/20

6:07 pm-5:37 pm

1 stop23h 30m

Lambert-St Louis

Tue 7/28

6:34 pm-5:10 pm

1 stop22h 36m

$259

Kansas CityMoline

MCI - MLI

MCIMLI

Kansas City

Fri 7/10

6:19 pm-11:30 pm

1 stop5h 11m

Moline Quad-City

Sun 7/12

6:08 am-9:52 am

1 stop3h 44m

$309

Kansas CityChicago

MCI - MDW

MCIMDW

Kansas City

Tue 7/28

2:05 pm-5:00 pm

1 stop2h 55m

Chicago Midway

Tue 8/4

7:40 am-1:30 pm

2 stops5h 50m

$326

Kansas CityChicago

MCI - ORD

MCIORD

Kansas City

Sat 8/1

5:08 pm-12:01 am

1 stop6h 53m

Chicago O'Hare Intl

Wed 8/5

11:45 am-1:30 pm

Nonstop1h 45m

$327

Quickest round-trip

Kansas CityChicago

MCI - MDW

MCIMDW

Kansas City

Wed 7/15

8:10 am-9:35 am

Nonstop1h 25m

Chicago Midway

Sun 7/19

6:30 am-7:55 am

Nonstop1h 25m

$327

Kansas CityChicago

MCI - ORD

MCIORD

Kansas City

Sat 8/1

5:40 pm-9:52 pm

1 stop4h 12m

Chicago O'Hare Intl

Wed 8/5

6:25 am-11:26 am

1 stop5h 01m

$337

Kansas CityChicago

MCI - MDW

MCIMDW

Kansas City

Tue 7/14

6:23 am-1:09 pm

1 stop6h 46m

Chicago Midway

Fri 7/17

9:49 am-3:14 pm

1 stop5h 25m

$337

Kansas CityMoline

MCI - MLI

MCIMLI

Kansas City

Mon 6/8

5:10 pm-9:22 pm

1 stop4h 12m

Moline Quad-City

Sat 6/20

6:30 pm-11:13 pm

1 stop4h 43m

$364

Kansas CityMoline

MCI - MLI

MCIMLI

Kansas City

Tue 6/9

5:10 pm-9:22 pm

1 stop4h 12m

Moline Quad-City

Sat 6/13

6:30 pm-11:13 pm

1 stop4h 43m

$379

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

Other information

What is the cheapest month to fly to Illinois?

The cheapest month to fly to Illinois from Kansas City is in June. Flight prices, which tend to average around $77, 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 June, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $91.

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 Thursday when prices can be found for as low as $552. Flights from Kansas City to Illinois on a Saturday will generally be more expensive and average around $876. 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 $585. Flights at noon are often more expensive with an average ticket price of $991.

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 from Kansas City 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 $334 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 $228 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	$203
Fastest flight time	1h 00m
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 $203. The best round-trip flight deal from Kansas City to Illinois found on momondo in the last 72 hours is $379.

The fastest flight from Kansas City to Illinois takes 1h 00m

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 O'Hare Intl (ORD), Chicago Midway (MDW), Lambert-St Louis (STL).

Search flight deals

Frequently asked questions about flying from Kansas City to Illinois

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?
The number of operators available for flights from Kansas City Airport to Illinois is 4 as of May 2026.
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?
momondo data reveals that the most frequently booked plane model on the route from Kansas City to Illinois is Boeing 737-800, representing 13.63% of all bookings. The subsequent popular models are Embraer 175 (Enhanced Winglets) at 13.11%, Airbus A320-100/200 at 11.40%, and Airbus A319 at 10.36%.

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
Frontier	PriceFrom $158	Free Cancellation	Rating 5.6 2,933 reviews	Search Frontier flights
United Airlines	PriceFrom $185	Free Cancellation	Rating 7.4 9,749 reviews	Search United Airlines flights
American Airlines	PriceFrom $188	Free Cancellation	Rating 7.1 11,629 reviews	Search American Airlines flights
Southwest	PriceFrom $229	Free Cancellation	Rating 8.0 4,266 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.