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

As of September 2026, there are 36 flights per day flying from Chicago to Illinois. The most common time of day flights depart is 11:00PM, with 47% of flights taking off in the evening.

What is the cheapest airline that flies from Chicago to Illinois?

Contour, United Airlines, and American Airlines are the most popular carriers operating from Chicago to Illinois

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

254 flights are operational weekly from Chicago to Illinois as of September 2026. The most popular departure day for this route is Tue, with 21% of flights per week taking off on this day.

When did momondo last update prices for flights from Chicago to Illinois?

Prices for flights from Chicago to Illinois were last updated today.

How many operators does momondo search for flights from Chicago to Illinois?

The number of operators available for flights from Chicago to Illinois is 3 as of September 2026.

How old do you have to be to fly from Chicago 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 Chicago to Illinois.

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

The travel and health documents required for your trip to Illinois can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Illinois. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$46 Cheap Flights from Chicago to Illinois in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Chicago to Illinois

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

12:30 pm - 1:55 pmORD Chicago O'Hare Intl-UIN Quincy Regional

1h 25mnonstop

9:55 am - 11:40 amUIN Quincy Regional-ORD Chicago O'Hare Intl

1h 45mnonstop

$102Contour

Mon, Oct 5 - Fri, Oct 9

12:30 pm - 1:55 pmORD Chicago O'Hare Intl-UIN Quincy Regional

1h 25mnonstop

3:35 pm - 5:20 pmUIN Quincy Regional-ORD Chicago O'Hare Intl

1h 45mnonstop

$102Contour

Thu, Nov 12 - Tue, Nov 17

12:30 pm - 1:55 pmORD Chicago O'Hare Intl-UIN Quincy Regional

1h 25mnonstop

3:35 pm - 5:20 pmUIN Quincy Regional-ORD Chicago O'Hare Intl

1h 45mnonstop

$117Contour

Sat, Oct 10 - Sat, Oct 17

5:30 pm - 6:43 pmORD Chicago O'Hare Intl-DEC Decatur Arpt

1h 13mnonstop

7:18 pm - 8:35 pmDEC Decatur Arpt-ORD Chicago O'Hare Intl

1h 17mnonstop

$149United Airlines

Sat, Oct 17 - Sat, Oct 24

5:30 pm - 6:43 pmORD Chicago O'Hare Intl-DEC Decatur Arpt

1h 13mnonstop

7:18 pm - 8:35 pmDEC Decatur Arpt-ORD Chicago O'Hare Intl

1h 17mnonstop

$149United Airlines

Sat, Oct 10 - Sat, Oct 17

5:30 pm - 6:43 pmORD Chicago O'Hare Intl-DEC Decatur Arpt

1h 13mnonstop

7:18 pm - 8:35 pmDEC Decatur Arpt-ORD Chicago O'Hare Intl

1h 17mnonstop

$149United Airlines

Sat, Oct 17 - Mon, Oct 19

10:45 pm - 12:18 amORD Chicago O'Hare Intl-MWA Marion Williamson County

1h 33mnonstop

10:48 am - 12:24 pmMWA Marion Williamson County-ORD Chicago O'Hare Intl

1h 36mnonstop

$262American Airlines

Wed, Oct 21 - Sun, Oct 25

2:20 pm - 3:57 pmORD Chicago O'Hare Intl-MWA Marion Williamson County

1h 37mnonstop

5:00 am - 6:45 amMWA Marion Williamson County-ORD Chicago O'Hare Intl

1h 45mnonstop

$262American Airlines

Tue, Dec 22 - Thu, Dec 31

6:30 am - 9:25 amORD Chicago O'Hare Intl-UIN Quincy Regional

26h 55m2 stops Denver Intl Nashville Intl

3:35 pm - 5:20 pmUIN Quincy Regional-ORD Chicago O'Hare Intl

1h 45mnonstop

$292Multiple Airlines

Thu, Nov 12 - Tue, Nov 17

4:41 pm - 9:25 amORD Chicago O'Hare Intl-UIN Quincy Regional

40h 44m2 stops Philadelphia Nashville Intl

3:35 pm - 5:20 pmUIN Quincy Regional-ORD Chicago O'Hare Intl

1h 45mnonstop

$366Multiple Airlines

Sat, Oct 10 - Sat, Oct 17

Cheap last minute flights

Enter your travel dates to find the best prices.

5:30 pm - 6:43 pmORD Chicago O'Hare Intl-DEC Decatur Arpt

1h 13mnonstop

7:18 pm - 8:35 pmDEC Decatur Arpt-ORD Chicago O'Hare Intl

1h 17mnonstop

$199United Airlines

Thu, Sep 24 - Sun, Sep 27

5:30 pm - 6:43 pmORD Chicago O'Hare Intl-DEC Decatur Arpt

1h 13mnonstop

9:12 am - 10:29 amDEC Decatur Arpt-ORD Chicago O'Hare Intl

1h 17mnonstop

$199United Airlines

Fri, Sep 25 - Mon, Sep 28

12:30 pm - 1:55 pmORD Chicago O'Hare Intl-UIN Quincy Regional

1h 25mnonstop

9:55 am - 11:40 amUIN Quincy Regional-ORD Chicago O'Hare Intl

1h 45mnonstop

$239Contour

Fri, Sep 25 - Sun, Sep 27

12:30 pm - 1:55 pmORD Chicago O'Hare Intl-UIN Quincy Regional

1h 25mnonstop

3:25 pm - 5:10 pmUIN Quincy Regional-ORD Chicago O'Hare Intl

1h 45mnonstop

$240Contour

Thu, Sep 24 - Sat, Sep 26

9:45 pm - 10:58 pmORD Chicago O'Hare Intl-PIA Greater Peoria

1h 13mnonstop

1:20 pm - 2:23 pmPIA Greater Peoria-ORD Chicago O'Hare Intl

1h 03mnonstop

$332United Airlines

Sat, Sep 26 - Mon, Apr 12

1:10 pm - 2:40 pmORD Chicago O'Hare Intl-MWA Marion Williamson County

1h 30mnonstop

3:24 pm - 5:07 pmMWA Marion Williamson County-ORD Chicago O'Hare Intl

1h 43mnonstop

$375American Airlines

Sat, Sep 26 - Fri, Oct 2

10:15 pm - 11:42 pmORD Chicago O'Hare Intl-MWA Marion Williamson County

1h 27mnonstop

5:42 am - 7:30 amMWA Marion Williamson County-ORD Chicago O'Hare Intl

1h 48mnonstop

$401American Airlines

Sun, Sep 27 - Sun, Oct 4

6:30 am - 9:25 amORD Chicago O'Hare Intl-UIN Quincy Regional

26h 55m2 stops Denver Intl Nashville Intl

3:25 pm - 5:10 pmUIN Quincy Regional-ORD Chicago O'Hare Intl

1h 45mnonstop

$491Multiple Airlines

Thu, Sep 24 - Sat, Sep 26

5:03 pm - 6:10 pmORD Chicago O'Hare Intl-CMI Champaign University-Willard

1h 07mnonstop

6:41 pm - 8:18 pmCMI Champaign University-Willard-ORD Chicago O'Hare Intl

1h 37mnonstop

$519American Airlines

Thu, Sep 24 - Sat, Sep 26

12:30 pm - 1:55 pmORD Chicago O'Hare Intl-UIN Quincy Regional

1h 25mnonstop

2:40 pm - 1:30 pmUIN Quincy Regional-ORD Chicago O'Hare Intl

22h 50m2 stops Nashville Intl Philadelphia

$635Multiple Airlines

Fri, Sep 25 - Sun, Sep 27

Cheap direct flights

Enter your travel dates to find the best prices.

12:30 pm - 1:55 pmORD Chicago O'Hare Intl-UIN Quincy Regional

1h 25mnonstop

9:55 am - 11:40 amUIN Quincy Regional-ORD Chicago O'Hare Intl

1h 45mnonstop

$102Contour

Mon, Oct 5 - Fri, Oct 9

12:30 pm - 1:55 pmORD Chicago O'Hare Intl-UIN Quincy Regional

1h 25mnonstop

3:35 pm - 5:20 pmUIN Quincy Regional-ORD Chicago O'Hare Intl

1h 45mnonstop

$102Contour

Thu, Nov 12 - Tue, Nov 17

12:30 pm - 1:55 pmORD Chicago O'Hare Intl-UIN Quincy Regional

1h 25mnonstop

3:35 pm - 5:20 pmUIN Quincy Regional-ORD Chicago O'Hare Intl

1h 45mnonstop

$115Contour

Sat, Oct 10 - Sat, Oct 17

12:30 pm - 1:55 pmORD Chicago O'Hare Intl-UIN Quincy Regional

1h 25mnonstop

3:35 pm - 5:20 pmUIN Quincy Regional-ORD Chicago O'Hare Intl

1h 45mnonstop

$117Contour

Sat, Oct 10 - Sat, Oct 17

5:30 pm - 6:43 pmORD Chicago O'Hare Intl-DEC Decatur Arpt

1h 13mnonstop

7:18 pm - 8:35 pmDEC Decatur Arpt-ORD Chicago O'Hare Intl

1h 17mnonstop

$149United Airlines

Sat, Oct 17 - Sat, Oct 24

5:30 pm - 6:43 pmORD Chicago O'Hare Intl-DEC Decatur Arpt

1h 13mnonstop

7:18 pm - 8:35 pmDEC Decatur Arpt-ORD Chicago O'Hare Intl

1h 17mnonstop

$149United Airlines

Sat, Oct 10 - Sat, Oct 17

5:30 pm - 6:43 pmORD Chicago O'Hare Intl-DEC Decatur Arpt

1h 13mnonstop

7:18 pm - 8:35 pmDEC Decatur Arpt-ORD Chicago O'Hare Intl

1h 17mnonstop

$149United Airlines

Sat, Oct 17 - Mon, Oct 19

10:45 pm - 12:18 amORD Chicago O'Hare Intl-MWA Marion Williamson County

1h 33mnonstop

10:48 am - 12:24 pmMWA Marion Williamson County-ORD Chicago O'Hare Intl

1h 36mnonstop

$262American Airlines

Wed, Oct 21 - Sun, Oct 25

2:20 pm - 3:57 pmORD Chicago O'Hare Intl-MWA Marion Williamson County

1h 37mnonstop

5:00 am - 6:45 amMWA Marion Williamson County-ORD Chicago O'Hare Intl

1h 45mnonstop

$262American Airlines

Tue, Dec 22 - Thu, Dec 31

11:00 pm - 12:27 amORD Chicago O'Hare Intl-MWA Marion Williamson County

1h 27mnonstop

6:45 am - 8:35 amMWA Marion Williamson County-ORD Chicago O'Hare Intl

1h 50mnonstop

$282American Airlines

Fri, Dec 11 - Sun, Dec 13

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Delta flights from Chicago to Illinois

Our best Delta deals on Chicago to Illinois flight tickets

Delta

Dec 5

ORD6:49 amChicago O'Hare Intl

16h 12m

1 stop

MLI11:01 pmMoline Quad-City

Dec 8

MLI6:10 amMoline Quad-City

17h 42m

1 stop

ORD11:52 pmChicago O'Hare Intl

$545

Delta

Dec 4

ORD6:49 amChicago O'Hare Intl

9h 33m

1 stop

MLI4:22 pmMoline Quad-City

Dec 8

MLI6:10 amMoline Quad-City

17h 42m

1 stop

ORD11:52 pmChicago O'Hare Intl

$553

Delta

Oct 23

ORD7:30 pmChicago O'Hare Intl

20h 14m

2 stops

BMI3:44 pmBloomington-Normal

Oct 31

BMI1:30 pmBloomington-Normal

10h 27m

1 stop

ORD11:57 pmChicago O'Hare Intl

$698

American Airlines flights from Chicago to Illinois

Our best American Airlines deals on Chicago to Illinois flight tickets

American Airlines

Dec 22

ORD2:20 pmChicago O'Hare Intl

1h 37m

MWA3:57 pmMarion Williamson County

Dec 31

MWA5:00 amMarion Williamson County

1h 45m

ORD6:45 amChicago O'Hare Intl

$262

American Airlines

Dec 11

ORD11:00 pmChicago O'Hare Intl

1h 27m

MWA12:27 amMarion Williamson County

Dec 13

MWA6:45 amMarion Williamson County

1h 50m

ORD8:35 amChicago O'Hare Intl

$282

American Airlines

Oct 30

ORD10:45 pmChicago O'Hare Intl

1h 33m

MWA12:18 amMarion Williamson County

Nov 2

MWA6:45 amMarion Williamson County

1h 50m

ORD8:35 amChicago O'Hare Intl

$283

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoQuincy

ORD Chicago O'Hare Intl - UIN Quincy Regional

ORDUIN

Chicago O'Hare Intl

Mon 10/5

12:30 pm-1:55 pm

Nonstop1h 25m

Quincy Regional

Fri 10/9

9:55 am-11:40 am

Nonstop1h 45m

$102

ChicagoQuincy

ORD Chicago O'Hare Intl - UIN Quincy Regional

ORDUIN

Chicago O'Hare Intl

Thu 11/12

12:30 pm-1:55 pm

Nonstop1h 25m

Quincy Regional

Tue 11/17

3:35 pm-5:20 pm

Nonstop1h 45m

$102

ChicagoQuincy

ORD Chicago O'Hare Intl - UIN Quincy Regional

ORDUIN

Chicago O'Hare Intl

Sat 10/10

12:30 pm-1:55 pm

Nonstop1h 25m

Quincy Regional

Sat 10/17

3:35 pm-5:20 pm

Nonstop1h 45m

$117

Quickest round-trip

ChicagoDecatur

ORD Chicago O'Hare Intl - DEC Decatur Arpt

ORDDEC

Chicago O'Hare Intl

Sat 10/17

5:30 pm-6:43 pm

Nonstop1h 13m

Decatur Arpt

Sat 10/24

7:18 pm-8:35 pm

Nonstop1h 17m

$149

ChicagoDecatur

ORD Chicago O'Hare Intl - DEC Decatur Arpt

ORDDEC

Chicago O'Hare Intl

Sat 10/10

5:30 pm-6:43 pm

Nonstop1h 13m

Decatur Arpt

Sat 10/17

7:18 pm-8:35 pm

Nonstop1h 17m

$149

ChicagoDecatur

ORD Chicago O'Hare Intl - DEC Decatur Arpt

ORDDEC

Chicago O'Hare Intl

Sat 10/17

5:30 pm-6:43 pm

Nonstop1h 13m

Decatur Arpt

Mon 10/19

7:18 pm-8:35 pm

Nonstop1h 17m

$149

ChicagoMarion

ORD Chicago O'Hare Intl - MWA Marion Williamson County

ORDMWA

Chicago O'Hare Intl

Wed 10/21

10:45 pm-12:18 am

Nonstop1h 33m

Marion Williamson County

Sun 10/25

10:48 am-12:24 pm

Nonstop1h 36m

$262

ChicagoMarion

ORD Chicago O'Hare Intl - MWA Marion Williamson County

ORDMWA

Chicago O'Hare Intl

Tue 12/22

2:20 pm-3:57 pm

Nonstop1h 37m

Marion Williamson County

Thu 12/31

5:00 am-6:45 am

Nonstop1h 45m

$262

ChicagoQuincy

ORD Chicago O'Hare Intl - UIN Quincy Regional

ORDUIN

Chicago O'Hare Intl

Thu 11/12

6:30 am-9:25 am

2 stops26h 55m

Quincy Regional

Tue 11/17

3:35 pm-5:20 pm

Nonstop1h 45m

$292

ChicagoQuincy

ORD Chicago O'Hare Intl - UIN Quincy Regional

ORDUIN

Chicago O'Hare Intl

Sat 10/10

4:41 pm-9:25 am

2 stops40h 44m

Quincy Regional

Sat 10/17

3:35 pm-5:20 pm

Nonstop1h 45m

$366

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 Chicago 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 Chicago is in September. Flight prices, which tend to average around $240, 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 April is also cheap. Prices for this month can be found on momondo for an average of $258.

What is the cheapest Chicago to Illinois flight route?

Fly from Chicago Greater Rockford to Chicago O'Hare Intl for the best Chicago - Illinois flight prices

What cabin class options are available on Chicago to Illinois flights?

There are 3 cabin classes available to choose from on Chicago to Illinois flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Cheap Chicago to Illinois flight deals and tips

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

Best Price Found	$46
Fastest flight time	0h 56m
Direct flights	Every day
Airports in Illinois	98 airports

The best one-way flight to Illinois from Chicago in the past 72 hours is $46. The best round-trip flight deal from Chicago to Illinois found on momondo in the last 72 hours is $102.

The fastest flight from Chicago to Illinois takes 0h 56m

Direct flights go from Chicago to Illinois every day.

There are 98 airports in Illinois. From Chicago there are direct flights to Decatur Arpt (DEC), Greater Peoria (PIA), Moline Quad-City (MLI), Springfield Capital (SPI) and 2 more.

Search flight deals

Frequently asked questions about flying from Chicago to Illinois

When did momondo last update prices for flights from Chicago to Illinois?
Prices for flights from Chicago to Illinois were last updated today.
How many operators does momondo search for flights from Chicago to Illinois?
The number of operators available for flights from Chicago to Illinois is 3 as of September 2026.
How old do you have to be to fly from Chicago 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 Chicago to Illinois.
What documentation or ID do you need to fly to Illinois?
The travel and health documents required for your trip to Illinois can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Illinois. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from Chicago to Illinois?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Chicago to Illinois is Airbus A320-100/200 (13.21% of total bookings). The next most popular plane models are Airbus A321neo (11.76%), Airbus A321 (sharklets) (7.13%), and Boeing 737 MAX 8 (6.74%).

Best airlines flying from Chicago to Illinois

Compare and see reviews for airlines that fly from Chicago to Illinois with momondo

Airline	Rating	Free Cancellation	Price
American Airlines	PriceFrom $168	Free Cancellation	Rating 7.0 12,077 reviews		Search American Airlines flights
United Airlines	PriceFrom $239	Free Cancellation	Rating 7.4 10,229 reviews		Search United Airlines flights

Why use momondo?

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

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

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

momondo does allow users to show only those flights to Illinois from Chicago which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Chicago to Illinois?

momondo helps you find the best flight between Chicago and Illinois by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Yes. momondo can track prices for Chicago to Illinois flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.