What is the cheapest airline that flies from Chicago O'Hare Intl to Illinois?

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

How many flights depart from Chicago O'Hare Intl Airport to Illinois on average per day?

48 flights are operational daily from Chicago O'Hare Intl Airport to Illinois as of October 2026. The most popular departure time for this route is 5:00PM, with 43% of flights per day taking off in the afternoon.

How many flights depart from Chicago O'Hare Intl Airport to Illinois on average per week?

As of October 2026, 339 flights take off from Chicago O'Hare Intl Airport and land in Illinois each week. The most common flight departure day for this route is Mon, with 16% of weekly flights taking off on this day.

When did momondo last update prices for flights from Chicago O'Hare Intl Airport to Illinois?

Prices for flights from Chicago O'Hare Intl Airport to Illinois are updated daily.

How many operators does momondo search for flights from Chicago O'Hare Intl Airport to Illinois?

There are 3 operators available for flights from Chicago O'Hare Intl Airport to Illinois as of October 2026.

How old do you have to be to fly from Chicago O'Hare Intl Airport to Illinois?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Chicago O'Hare Intl 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.

$59 Cheap Flights from Chicago O'Hare Intl Airport to Illinois in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Chicago O'Hare Intl Airport 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

$101Contour

Thu, Oct 22 - Mon, Oct 26

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

$103Contour

Sat, Oct 24 - Wed, Oct 28

12:15 pm - 1:40 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

$109Contour

Sun, Nov 1 - Sun, Nov 8

7:25 am - 8:35 amORD Chicago O'Hare Intl-DEC Decatur Arpt

1h 10mnonstop

6:57 pm - 8:25 pmDEC Decatur Arpt-ORD Chicago O'Hare Intl

1h 28mnonstop

$149United Airlines

Mon, Nov 2 - Mon, Nov 9

4:45 pm - 5:55 pmORD Chicago O'Hare Intl-DEC Decatur Arpt

1h 10mnonstop

9:10 am - 10:19 amDEC Decatur Arpt-ORD Chicago O'Hare Intl

1h 09mnonstop

$159United Airlines

Sat, Oct 31 - Mon, Nov 2

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

1h 13mnonstop

7:02 pm - 8:30 pmDEC Decatur Arpt-ORD Chicago O'Hare Intl

1h 28mnonstop

$174United Airlines

Fri, Oct 23 - Tue, Oct 27

8:25 am - 9:55 amORD Chicago O'Hare Intl-MWA Marion Williamson County

1h 30mnonstop

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

1h 50mnonstop

$262American Airlines

Thu, Nov 5 - Wed, Nov 11

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

$262American Airlines

Sat, Nov 7 - Sun, Nov 8

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

1h 25mnonstop

2:40 pm - 6:45 pmUIN Quincy Regional-ORD Chicago O'Hare Intl

28h 05m3 stops Nashville Intl Orlando Atlanta Hartsfield-Jackson

$310Multiple Airlines

Sat, Oct 24 - Wed, Oct 28

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

1h 25mnonstop

2:40 pm - 8:46 amUIN Quincy Regional-ORD Chicago O'Hare Intl

18h 06m2 stops Nashville Intl Orlando

$312Multiple Airlines

Sat, Oct 24 - Wed, Oct 28

Cheap last minute flights

Enter your travel dates to find the best prices.

7:25 am - 8:35 amORD Chicago O'Hare Intl-DEC Decatur Arpt

1h 10mnonstop

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

1h 17mnonstop

$174United Airlines

Thu, Oct 15 - Thu, Oct 22

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

Mon, Oct 12 - Mon, Oct 19

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

$200Contour

Tue, Oct 13 - Sat, Oct 17

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

$341United Airlines

Tue, Oct 13 - Wed, Oct 14

8:11 pm - 7:53 pmORD Chicago O'Hare Intl-SPI Springfield Capital

23h 42m1 stop Orlando

7:36 pm - 7:31 amSPI Springfield Capital-ORD Chicago O'Hare Intl

11h 55m1 stop Orlando

$435Multiple Airlines

Fri, Oct 16 - Wed, Oct 21

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

$439Multiple Airlines

Tue, Oct 13 - Sat, Oct 17

8:11 pm - 7:53 pmORD Chicago O'Hare Intl-SPI Springfield Capital

23h 42m1 stop Orlando

7:36 pm - 6:31 pmSPI Springfield Capital-ORD Chicago O'Hare Intl

22h 55m2 stops Orlando Atlanta Hartsfield-Jackson

$461Multiple Airlines

Fri, Oct 16 - Wed, Oct 21

11:00 am - 12:08 pmORD Chicago O'Hare Intl-CMI Champaign University-Willard

1h 08mnonstop

12:38 pm - 1:56 pmCMI Champaign University-Willard-ORD Chicago O'Hare Intl

1h 18mnonstop

$564American Airlines

Sat, Oct 10 - Sun, Oct 11

11:00 pm - 11:59 pmORD Chicago O'Hare Intl-BMI Bloomington-Normal

0h 59mnonstop

5:00 am - 6:14 amBMI Bloomington-Normal-ORD Chicago O'Hare Intl

1h 14mnonstop

$571American Airlines

Fri, Oct 16 - Fri, Oct 23

11:00 am - 12:08 pmORD Chicago O'Hare Intl-CMI Champaign University-Willard

1h 08mnonstop

6:48 pm - 8:15 pmCMI Champaign University-Willard-ORD Chicago O'Hare Intl

1h 27mnonstop

$575American Airlines

Thu, Oct 15 - Thu, Oct 22

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

$101Contour

Thu, Oct 22 - Mon, Oct 26

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

$103Contour

Sat, Oct 24 - Wed, Oct 28

12:15 pm - 1:40 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

$109Contour

Sun, Nov 1 - Sun, Nov 8

12:15 pm - 1:40 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

$113Contour

Thu, Nov 12 - Tue, Nov 17

7:25 am - 8:35 amORD Chicago O'Hare Intl-DEC Decatur Arpt

1h 10mnonstop

6:57 pm - 8:25 pmDEC Decatur Arpt-ORD Chicago O'Hare Intl

1h 28mnonstop

$149United Airlines

Mon, Nov 2 - Mon, Nov 9

4:45 pm - 5:55 pmORD Chicago O'Hare Intl-DEC Decatur Arpt

1h 10mnonstop

9:10 am - 10:19 amDEC Decatur Arpt-ORD Chicago O'Hare Intl

1h 09mnonstop

$159United Airlines

Sat, Oct 31 - Mon, Nov 2

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

1h 13mnonstop

7:02 pm - 8:30 pmDEC Decatur Arpt-ORD Chicago O'Hare Intl

1h 28mnonstop

$174United Airlines

Fri, Oct 23 - Tue, Oct 27

8:25 am - 9:55 amORD Chicago O'Hare Intl-MWA Marion Williamson County

1h 30mnonstop

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

1h 50mnonstop

$262American Airlines

Thu, Nov 5 - Wed, Nov 11

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

$262American Airlines

Sat, Nov 7 - Sun, Nov 8

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

1h 27mnonstop

10:41 am - 12:24 pmMWA Marion Williamson County-ORD Chicago O'Hare Intl

1h 43mnonstop

$262American Airlines

Wed, Nov 11 - Fri, Nov 13

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United Airlines flights from Chicago O'Hare Intl Airport to Illinois

Our best United Airlines deals on Chicago O'Hare Intl Airport to Illinois flight tickets

United Airlines

Nov 2

ORD7:25 amChicago O'Hare Intl

1h 10m

DEC8:35 amDecatur Arpt

Nov 9

DEC6:57 pmDecatur Arpt

1h 28m

ORD8:25 pmChicago O'Hare Intl

$149

United Airlines

Oct 31

ORD4:45 pmChicago O'Hare Intl

1h 10m

DEC5:55 pmDecatur Arpt

Nov 2

DEC9:10 amDecatur Arpt

1h 09m

ORD10:19 amChicago O'Hare Intl

$159

United Airlines

Oct 23

ORD5:30 pmChicago O'Hare Intl

1h 13m

DEC6:43 pmDecatur Arpt

Oct 27

DEC7:02 pmDecatur Arpt

1h 28m

ORD8:30 pmChicago O'Hare Intl

$174

American Airlines flights from Chicago O'Hare Intl Airport to Illinois

Our best American Airlines deals on Chicago O'Hare Intl Airport to Illinois flight tickets

American Airlines

Nov 5

ORD8:25 amChicago O'Hare Intl

1h 30m

MWA9:55 amMarion Williamson County

Nov 11

MWA6:45 amMarion Williamson County

1h 50m

ORD8:35 amChicago O'Hare Intl

$262

American Airlines

Oct 22

ORD3:45 pmChicago O'Hare Intl

1h 14m

PIA4:59 pmGreater Peoria

Oct 26

PIA5:30 pmGreater Peoria

1h 24m

ORD6:54 pmChicago O'Hare Intl

$304

American Airlines

Oct 23

ORD9:40 amChicago O'Hare Intl

1h 11m

MLI10:51 amMoline Quad-City

Oct 27

MLI5:02 pmMoline Quad-City

1h 27m

ORD6:29 pmChicago O'Hare Intl

$319

momondo Fare Finder

Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to Illinois that are best for you.

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

Thu 10/22

12:30 pm-1:55 pm

Nonstop1h 25m

Quincy Regional

Mon 10/26

9:55 am-11:40 am

Nonstop1h 45m

$101

ChicagoQuincy

ORD Chicago O'Hare Intl - UIN Quincy Regional

ORDUIN

Chicago O'Hare Intl

Sat 10/24

12:30 pm-1:55 pm

Nonstop1h 25m

Quincy Regional

Wed 10/28

9:55 am-11:40 am

Nonstop1h 45m

$103

ChicagoQuincy

ORD Chicago O'Hare Intl - UIN Quincy Regional

ORDUIN

Chicago O'Hare Intl

Sun 11/1

12:15 pm-1:40 pm

Nonstop1h 25m

Quincy Regional

Sun 11/8

9:55 am-11:40 am

Nonstop1h 45m

$109

ChicagoDecatur

ORD Chicago O'Hare Intl - DEC Decatur Arpt

ORDDEC

Chicago O'Hare Intl

Mon 11/2

7:25 am-8:35 am

Nonstop1h 10m

Decatur Arpt

Mon 11/9

6:57 pm-8:25 pm

Nonstop1h 28m

$149

Quickest round-trip

ChicagoDecatur

ORD Chicago O'Hare Intl - DEC Decatur Arpt

ORDDEC

Chicago O'Hare Intl

Sat 10/31

4:45 pm-5:55 pm

Nonstop1h 10m

Decatur Arpt

Mon 11/2

9:10 am-10:19 am

Nonstop1h 09m

$159

ChicagoDecatur

ORD Chicago O'Hare Intl - DEC Decatur Arpt

ORDDEC

Chicago O'Hare Intl

Fri 10/23

5:30 pm-6:43 pm

Nonstop1h 13m

Decatur Arpt

Tue 10/27

7:02 pm-8:30 pm

Nonstop1h 28m

$174

ChicagoMarion

ORD Chicago O'Hare Intl - MWA Marion Williamson County

ORDMWA

Chicago O'Hare Intl

Thu 11/5

8:25 am-9:55 am

Nonstop1h 30m

Marion Williamson County

Wed 11/11

6:45 am-8:35 am

Nonstop1h 50m

$262

ChicagoMarion

ORD Chicago O'Hare Intl - MWA Marion Williamson County

ORDMWA

Chicago O'Hare Intl

Sat 11/7

11:00 pm-12:27 am

Nonstop1h 27m

Marion Williamson County

Sun 11/8

6:45 am-8:35 am

Nonstop1h 50m

$262

ChicagoQuincy

ORD Chicago O'Hare Intl - UIN Quincy Regional

ORDUIN

Chicago O'Hare Intl

Sat 10/24

12:30 pm-1:55 pm

Nonstop1h 25m

Quincy Regional

Wed 10/28

2:40 pm-6:45 pm

3 stops28h 05m

$310

ChicagoQuincy

ORD Chicago O'Hare Intl - UIN Quincy Regional

ORDUIN

Chicago O'Hare Intl

Sat 10/24

12:30 pm-1:55 pm

Nonstop1h 25m

Quincy Regional

Wed 10/28

2:40 pm-8:46 am

2 stops18h 06m

$312

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 O'Hare Intl Airport 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 Chicago O'Hare Intl to Illinois flight route?

Fly from Chicago O'Hare Intl to Moline Quad-City for the best Chicago O'Hare Intl - Illinois flight prices

What cabin class options are available on Chicago O'Hare Intl Airport to Illinois flights?

There are 3 cabin classes available to choose from on Chicago O'Hare Intl Airport 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 O'Hare Intl Airport to Illinois flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Chicago O'Hare Intl Airport to Illinois

Best Price Found	$59
Fastest flight time	0h 59m
Direct flights	Every day
Airports in Illinois	98 airports

The best one-way flight to Illinois from Chicago O'Hare Intl Airport in the past 72 hours is $59. The best round-trip flight deal from Chicago O'Hare Intl Airport to Illinois found on momondo in the last 72 hours is $101.

The fastest flight from Chicago O'Hare Intl Airport to Illinois takes 0h 59m

Direct flights go from Chicago O'Hare Intl Airport to Illinois every day.

There are 98 airports in Illinois. From Chicago O'Hare Intl Airport 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 O'Hare Intl Airport to Illinois

When did momondo last update prices for flights from Chicago O'Hare Intl Airport to Illinois?
Prices for flights from Chicago O'Hare Intl Airport to Illinois are updated daily.
How many operators does momondo search for flights from Chicago O'Hare Intl Airport to Illinois?
There are 3 operators available for flights from Chicago O'Hare Intl Airport to Illinois as of October 2026.
How old do you have to be to fly from Chicago O'Hare Intl Airport to Illinois?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Chicago O'Hare Intl 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 Chicago O'Hare Intl Airport to Illinois?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Chicago O'Hare Intl Airport to Illinois is Airbus A319 (14.29% of total bookings). The next most popular plane models are Canadair (Bombardier) Regional Jet 700 (10.96%), Embraer 170 (10.30%), and Embraer 175 (8.97%).

Best airlines flying from Chicago O'Hare Intl Airport to Illinois

Compare and see reviews for airlines that fly from Chicago O'Hare Intl Airport to Illinois with momondo

Airline	Rating	Free Cancellation	Price
American Airlines	PriceFrom $168	Free Cancellation	Rating 7.0 12,152 reviews		Search American Airlines flights
United Airlines	PriceFrom $239	Free Cancellation	Rating 7.4 10,332 reviews		Search United Airlines flights

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Chicago to Illinois for you.

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

Flights from Chicago to Illinois with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

momondo provides multiple filters to help you find the best flight to Illinois from Chicago. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Yes momondo offers price alerts on flights to Illinois from Chicago. 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.