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 day?

As of November 2026, there are 51 flights per day flying from Chicago to Illinois. The most common time of day flights depart is 11:00PM, with 48% of flights taking off in the evening.

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

362 flights are operational weekly from Chicago to Illinois as of November 2026. The most popular departure day for this route is Fri, with 15% 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 November 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.

$49 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.

12:15 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

$103Contour

Thu, Nov 19 - Mon, Nov 23

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

$103Contour

Wed, Nov 25 - Sun, Nov 29

12:15 pm - 1:40 pmORD Chicago O'Hare Intl-UIN Quincy Regional

1h 25mnonstop

2:20 pm - 4:05 pmUIN Quincy Regional-ORD Chicago O'Hare Intl

1h 45mnonstop

$103Contour

Sun, Nov 22 - Thu, Nov 26

5:00 pm - 6:10 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

$149United Airlines

Sun, Nov 22 - Thu, Nov 26

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, Nov 21 - Wed, Nov 25

6:59 am - 8:09 amORD Chicago O'Hare Intl-DEC Decatur Arpt

1h 10mnonstop

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

1h 09mnonstop

$160United Airlines

Sun, Nov 22 - Thu, Nov 26

12:15 pm - 1:40 pmORD Chicago O'Hare Intl-UIN Quincy Regional

1h 25mnonstop

2:40 pm - 12:43 amUIN Quincy Regional-ORD Chicago O'Hare Intl

34h 03m2 stops Nashville Intl Orlando

$298Multiple Airlines

Thu, Nov 19 - Mon, Nov 23

8:15 am - 9:51 amORD Chicago O'Hare Intl-MWA Marion Williamson County

1h 36mnonstop

6:39 am - 8:35 amMWA Marion Williamson County-ORD Chicago O'Hare Intl

1h 56mnonstop

$313American Airlines

Sun, Dec 6 - Sun, Dec 13

11:00 pm - 12:15 amORD Chicago O'Hare Intl-PIA Greater Peoria

1h 15mnonstop

6:00 am - 7:18 amPIA Greater Peoria-ORD Chicago O'Hare Intl

1h 18mnonstop

$317American Airlines

Thu, Dec 3 - Sun, Dec 6

12:15 pm - 1:40 pmORD Chicago O'Hare Intl-UIN Quincy Regional

1h 25mnonstop

2:40 pm - 11:18 pmUIN Quincy Regional-ORD Chicago O'Hare Intl

32h 38m3 stops Nashville Intl Fort Lauderdale Atlanta Hartsfield-Jackson

$372Multiple Airlines

Thu, Nov 19 - Mon, Nov 23

Cheap last minute flights

Enter your travel dates to find the best prices.

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

$198Contour

Thu, Nov 12 - Tue, Nov 17

6:59 am - 8:09 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

$199United Airlines

Thu, Nov 12 - Mon, Nov 16

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

$203Contour

Wed, Nov 11 - Wed, Nov 18

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

$209Contour

Thu, Nov 12 - Tue, Nov 17

6:59 am - 8:09 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

$241United Airlines

Sun, Nov 15 - Thu, Nov 19

5:00 pm - 6:10 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

$291United Airlines

Sun, Nov 15 - Thu, Nov 19

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

1h 30mnonstop

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

1h 43mnonstop

$431American Airlines

Thu, Nov 12 - Sun, Nov 15

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

$431American Airlines

Fri, Nov 13 - Sun, Nov 15

12:15 pm - 1:40 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

$439Multiple Airlines

Wed, Nov 11 - Wed, Nov 18

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

$458Multiple Airlines

Thu, Nov 12 - Tue, Nov 17

Cheap direct flights

Enter your travel dates to find the best prices.

12:15 pm - 1:40 pmORD Chicago O'Hare Intl-UIN Quincy Regional

1h 25mnonstop

2:20 pm - 4:05 pmUIN Quincy Regional-ORD Chicago O'Hare Intl

1h 45mnonstop

$103Contour

Sun, Nov 22 - Thu, Nov 26

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

$103Contour

Wed, Nov 25 - Sun, Nov 29

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

$103Contour

Thu, Nov 19 - Mon, Nov 23

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

$105Contour

Wed, Nov 25 - Sat, Nov 28

5:00 pm - 6:10 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

$149United Airlines

Sun, Nov 22 - Thu, Nov 26

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

1h 10mnonstop

9:15 am - 10:24 amDEC Decatur Arpt-ORD Chicago O'Hare Intl

1h 09mnonstop

$159United Airlines

Sat, Nov 21 - Sat, Nov 28

6:59 am - 8:09 amORD Chicago O'Hare Intl-DEC Decatur Arpt

1h 10mnonstop

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

1h 09mnonstop

$160United Airlines

Sun, Nov 22 - Thu, Nov 26

8:15 am - 9:51 amORD Chicago O'Hare Intl-MWA Marion Williamson County

1h 36mnonstop

6:39 am - 8:35 amMWA Marion Williamson County-ORD Chicago O'Hare Intl

1h 56mnonstop

$313American Airlines

Sun, Dec 6 - Sun, Dec 13

11:00 pm - 12:15 amORD Chicago O'Hare Intl-PIA Greater Peoria

1h 15mnonstop

6:00 am - 7:18 amPIA Greater Peoria-ORD Chicago O'Hare Intl

1h 18mnonstop

$317American Airlines

Thu, Dec 3 - Sun, Dec 6

4:15 pm - 5:27 pmORD Chicago O'Hare Intl-PIA Greater Peoria

1h 12mnonstop

6:04 pm - 7:30 pmPIA Greater Peoria-ORD Chicago O'Hare Intl

1h 26mnonstop

$319American Airlines

Fri, Dec 4 - Fri, Dec 11

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

United Airlines flights from Chicago to Illinois

Our best United Airlines deals on Chicago to Illinois flight tickets

United Airlines

Nov 22

ORD5:00 pmChicago O'Hare Intl

1h 10m

DEC6:10 pmDecatur Arpt

Nov 26

DEC9:10 amDecatur Arpt

1h 09m

ORD10:19 amChicago O'Hare Intl

$149

United Airlines

Nov 21

ORD4:45 pmChicago O'Hare Intl

1h 10m

DEC5:55 pmDecatur Arpt

Nov 28

DEC9:15 amDecatur Arpt

1h 09m

ORD10:24 amChicago O'Hare Intl

$159

United Airlines

Nov 22

ORD6:59 amChicago O'Hare Intl

1h 10m

DEC8:09 amDecatur Arpt

Nov 26

DEC9:10 amDecatur Arpt

1h 09m

ORD10:19 amChicago O'Hare Intl

$160

American Airlines flights from Chicago to Illinois

Our best American Airlines deals on Chicago to Illinois flight tickets

American Airlines

Dec 6

ORD8:15 amChicago O'Hare Intl

1h 36m

MWA9:51 amMarion Williamson County

Dec 13

MWA6:39 amMarion Williamson County

1h 56m

ORD8:35 amChicago O'Hare Intl

$313

American Airlines

Dec 3

ORD11:00 pmChicago O'Hare Intl

1h 15m

PIA12:15 amGreater Peoria

Dec 6

PIA6:00 amGreater Peoria

1h 18m

ORD7:18 amChicago O'Hare Intl

$317

American Airlines

May 7

ORD8:34 amChicago O'Hare Intl

1h 23m

MWA9:57 amMarion Williamson County

May 9

MWA10:40 amMarion Williamson County

1h 44m

ORD12:24 pmChicago O'Hare Intl

$333

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 11/19

12:15 pm-1:40 pm

Nonstop1h 25m

Quincy Regional

Mon 11/23

9:55 am-11:40 am

Nonstop1h 45m

$103

ChicagoQuincy

ORD Chicago O'Hare Intl - UIN Quincy Regional

ORDUIN

Chicago O'Hare Intl

Wed 11/25

12:15 pm-1:40 pm

Nonstop1h 25m

Quincy Regional

Sun 11/29

9:55 am-11:40 am

Nonstop1h 45m

$103

ChicagoQuincy

ORD Chicago O'Hare Intl - UIN Quincy Regional

ORDUIN

Chicago O'Hare Intl

Sun 11/22

12:15 pm-1:40 pm

Nonstop1h 25m

Quincy Regional

Thu 11/26

2:20 pm-4:05 pm

Nonstop1h 45m

$103

Quickest round-trip

ChicagoDecatur

ORD Chicago O'Hare Intl - DEC Decatur Arpt

ORDDEC

Chicago O'Hare Intl

Sun 11/22

5:00 pm-6:10 pm

Nonstop1h 10m

Decatur Arpt

Thu 11/26

9:10 am-10:19 am

Nonstop1h 09m

$149

ChicagoDecatur

ORD Chicago O'Hare Intl - DEC Decatur Arpt

ORDDEC

Chicago O'Hare Intl

Sat 11/21

4:45 pm-5:55 pm

Nonstop1h 10m

Decatur Arpt

Wed 11/25

9:10 am-10:19 am

Nonstop1h 09m

$159

ChicagoDecatur

ORD Chicago O'Hare Intl - DEC Decatur Arpt

ORDDEC

Chicago O'Hare Intl

Sun 11/22

6:59 am-8:09 am

Nonstop1h 10m

Decatur Arpt

Thu 11/26

9:10 am-10:19 am

Nonstop1h 09m

$160

ChicagoQuincy

ORD Chicago O'Hare Intl - UIN Quincy Regional

ORDUIN

Chicago O'Hare Intl

Thu 11/19

12:15 pm-1:40 pm

Nonstop1h 25m

Quincy Regional

Mon 11/23

2:40 pm-12:43 am

2 stops34h 03m

$298

ChicagoMarion

ORD Chicago O'Hare Intl - MWA Marion Williamson County

ORDMWA

Chicago O'Hare Intl

Sun 12/6

8:15 am-9:51 am

Nonstop1h 36m

Marion Williamson County

Sun 12/13

6:39 am-8:35 am

Nonstop1h 56m

$313

ChicagoPeoria

ORD Chicago O'Hare Intl - PIA Greater Peoria

ORDPIA

Chicago O'Hare Intl

Thu 12/3

11:00 pm-12:15 am

Nonstop1h 15m

Greater Peoria

Sun 12/6

6:00 am-7:18 am

Nonstop1h 18m

$317

ChicagoQuincy

ORD Chicago O'Hare Intl - UIN Quincy Regional

ORDUIN

Chicago O'Hare Intl

Thu 11/19

12:15 pm-1:40 pm

Nonstop1h 25m

Quincy Regional

Mon 11/23

2:40 pm-11:18 pm

3 stops32h 38m

$372

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 February. Flight prices, which tend to average around $138, 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 February, then flying in December is also cheap. Prices for this month can be found on momondo for an average of $149.

What is the cheapest Chicago to Illinois flight route?

Fly from Chicago O'Hare Intl to Springfield Capital 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	$49
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 $49. The best round-trip flight deal from Chicago to Illinois found on momondo in the last 72 hours is $103.

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), Marion Williamson County (MWA), Greater Peoria (PIA), Moline Quad-City (MLI) and 3 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 November 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 (14.02% of total bookings). The next most popular plane models are Airbus A319 (9.29%), Airbus A321 (sharklets) (8.50%), and Airbus A321neo (5.98%).

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 12,225 reviews		Search American Airlines flights
United Airlines	PriceFrom $239	Free Cancellation	Rating 7.3 10,475 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.