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Cheap flights from Illinois to Chicago from $83

1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Illinois to Chicago

Cheap round-trip flights

Enter your travel dates to find the best prices.
Contour Logo
3:35 pm - 5:20 pmUIN  Quincy Regional-ORD Chicago O'Hare Intl
1h 45mnonstop
Contour Logo
12:30 pm - 1:55 pmORD  Chicago O'Hare Intl-UIN Quincy Regional
1h 25mnonstop
$103Contour
Sat, Oct 3 - Sat, Oct 10
Contour Logo
3:25 pm - 5:10 pmUIN  Quincy Regional-ORD Chicago O'Hare Intl
1h 45mnonstop
Contour Logo
12:30 pm - 1:55 pmORD  Chicago O'Hare Intl-UIN Quincy Regional
1h 25mnonstop
$104Contour
Tue, Sep 29 - Sat, Oct 3
Frontier Logo
6:44 pm - 8:56 amSTL  Lambert-St Louis-ORD Chicago O'Hare Intl
14h 12m1 stop Atlanta Hartsfield-Jackson
Frontier Logo
7:15 am - 5:40 pmORD  Chicago O'Hare Intl-STL Lambert-St Louis
10h 25m1 stop Atlanta Hartsfield-Jackson
$133Frontier
Wed, Oct 28 - Wed, Nov 4
Frontier Logo
2:29 pm - 6:23 pmSTL  Lambert-St Louis-ORD Chicago O'Hare Intl
27h 54m1 stop Atlanta Hartsfield-Jackson
Frontier Logo
7:28 pm - 1:10 pmORD  Chicago O'Hare Intl-STL Lambert-St Louis
17h 42m1 stop Atlanta Hartsfield-Jackson
$135Frontier
Fri, Oct 2 - Tue, Oct 6
United Airlines Logo
7:18 pm - 8:35 pmDEC  Decatur Arpt-ORD Chicago O'Hare Intl
1h 17mnonstop
United Airlines Logo
7:25 am - 8:35 amORD  Chicago O'Hare Intl-DEC Decatur Arpt
1h 10mnonstop
$149United Airlines
Tue, Sep 29 - Mon, Oct 5
United Airlines Logo
7:18 pm - 8:35 pmDEC  Decatur Arpt-ORD Chicago O'Hare Intl
1h 17mnonstop
United Airlines Logo
7:25 am - 8:35 amORD  Chicago O'Hare Intl-DEC Decatur Arpt
1h 10mnonstop
$149United Airlines
Thu, Oct 15 - Thu, Oct 22
American Airlines Logo
11:31 am - 12:59 pmSTL  Lambert-St Louis-ORD Chicago O'Hare Intl
1h 28mnonstop
American Airlines Logo
11:00 pm - 12:19 amORD  Chicago O'Hare Intl-STL Lambert-St Louis
1h 19mnonstop
$243American Airlines
Wed, Oct 14 - Wed, Oct 21
American Airlines Logo
5:00 am - 6:29 amSTL  Lambert-St Louis-ORD Chicago O'Hare Intl
1h 29mnonstop
American Airlines Logo
6:50 am - 8:29 amORD  Chicago O'Hare Intl-STL Lambert-St Louis
1h 39mnonstop
$243American Airlines
Tue, Dec 15 - Sat, Dec 19
Southwest Logo
8:50 pm - 10:00 pmSTL  Lambert-St Louis-MDW Chicago Midway
1h 10mnonstop
Southwest Logo
8:50 pm - 10:05 pmMDW  Chicago Midway-STL Lambert-St Louis
1h 15mnonstop
$243Southwest
Wed, Oct 14 - Wed, Oct 21
Southwest Logo
5:50 am - 6:55 amSTL  Lambert-St Louis-MDW Chicago Midway
1h 05mnonstop
Southwest Logo
8:15 am - 9:25 amMDW  Chicago Midway-STL Lambert-St Louis
1h 10mnonstop
$243Southwest
Tue, Oct 27 - Tue, Oct 27

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United Airlines flights from Illinois to Chicago

Our best United Airlines deals on Illinois to Chicago flight tickets
United Airlines
Oct 15
DEC7:18 pmDecatur Arpt
1h 17m
ORD8:35 pmChicago O'Hare Intl
Oct 19
ORD7:25 amChicago O'Hare Intl
1h 10m
DEC8:35 amDecatur Arpt
$149
United Airlines
Sep 26
DEC7:18 pmDecatur Arpt
1h 17m
ORD8:35 pmChicago O'Hare Intl
Sep 30
ORD5:30 pmChicago O'Hare Intl
1h 13m
DEC6:43 pmDecatur Arpt
$159
United Airlines
Sep 17
DEC9:12 amDecatur Arpt
1h 17m
ORD10:29 amChicago O'Hare Intl
Oct 1
ORD7:25 amChicago O'Hare Intl
1h 10m
DEC8:35 amDecatur Arpt
$174

Frontier flights from Illinois to Chicago

Our best Frontier deals on Illinois to Chicago flight tickets
Frontier
Oct 28
STL6:44 pmLambert-St Louis
14h 12m
1 stop
ORD8:56 amChicago O'Hare Intl
Nov 4
ORD7:15 amChicago O'Hare Intl
10h 25m
1 stop
STL5:40 pmLambert-St Louis
$133
Frontier
Oct 2
STL2:29 pmLambert-St Louis
27h 54m
1 stop
ORD6:23 pmChicago O'Hare Intl
Oct 6
ORD7:28 pmChicago O'Hare Intl
17h 42m
1 stop
STL1:10 pmLambert-St Louis
$135
Frontier
Oct 2
STL2:29 pmLambert-St Louis
27h 22m
1 stop
MDW5:51 pmChicago Midway
Oct 5
MDW6:50 amChicago Midway
6h 20m
1 stop
STL1:10 pmLambert-St Louis
$142

momondo Fare Finder

 
Use the filters below to find and compare flights from Illinois to Chicago that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

QuincyChicago

UIN Quincy Regional - ORD Chicago O'Hare Intl

UINORD

Quincy Regional

Sat 10/3

3:35 pm-5:20 pm

Nonstop1h 45m

Chicago O'Hare Intl

Sat 10/10

12:30 pm-1:55 pm

Nonstop1h 25m

$103

QuincyChicago

UIN Quincy Regional - ORD Chicago O'Hare Intl

UINORD

Quincy Regional

Tue 9/29

3:25 pm-5:10 pm

Nonstop1h 45m

Chicago O'Hare Intl

Sat 10/3

12:30 pm-1:55 pm

Nonstop1h 25m

$104

St. LouisChicago

STL Lambert-St Louis - ORD Chicago O'Hare Intl

STLORD

Lambert-St Louis

Wed 10/28

6:44 pm-8:56 am

1 stop14h 12m

Chicago O'Hare Intl

Wed 11/4

7:15 am-5:40 pm

1 stop10h 25m

$133

St. LouisChicago

STL Lambert-St Louis - ORD Chicago O'Hare Intl

STLORD

Lambert-St Louis

Fri 10/2

2:29 pm-6:23 pm

1 stop27h 54m

Chicago O'Hare Intl

Tue 10/6

7:28 pm-1:10 pm

1 stop17h 42m

$135

DecaturChicago

DEC Decatur Arpt - ORD Chicago O'Hare Intl

DECORD

Decatur Arpt

Tue 9/29

7:18 pm-8:35 pm

Nonstop1h 17m

Chicago O'Hare Intl

Mon 10/5

7:25 am-8:35 am

Nonstop1h 10m

$149

DecaturChicago

DEC Decatur Arpt - ORD Chicago O'Hare Intl

DECORD

Decatur Arpt

Thu 10/15

7:18 pm-8:35 pm

Nonstop1h 17m

Chicago O'Hare Intl

Thu 10/22

7:25 am-8:35 am

Nonstop1h 10m

$149

St. LouisChicago

STL Lambert-St Louis - ORD Chicago O'Hare Intl

STLORD

Lambert-St Louis

Wed 10/14

11:31 am-12:59 pm

Nonstop1h 28m

Chicago O'Hare Intl

Wed 10/21

11:00 pm-12:19 am

Nonstop1h 19m

$243

St. LouisChicago

STL Lambert-St Louis - ORD Chicago O'Hare Intl

STLORD

Lambert-St Louis

Tue 12/15

5:00 am-6:29 am

Nonstop1h 29m

Chicago O'Hare Intl

Sat 12/19

6:50 am-8:29 am

Nonstop1h 39m

$243

St. LouisChicago

STL Lambert-St Louis - MDW Chicago Midway

STLMDW

Lambert-St Louis

Wed 10/14

8:50 pm-10:00 pm

Nonstop1h 10m

Chicago Midway

Wed 10/21

8:50 pm-10:05 pm

Nonstop1h 15m

$243
Quickest round-trip

St. LouisChicago

STL Lambert-St Louis - MDW Chicago Midway

STLMDW

Lambert-St Louis

Tue 10/27

5:50 am-6:55 am

Nonstop1h 05m

Chicago Midway

Tue 10/27

8:15 am-9:25 am

Nonstop1h 10m

$243

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 Chicago from

How to get the cheapest flight ticket from Illinois to Chicago

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 Chicago?

The month of November is, on average, the cheapest month to fly to Chicago from Illinois, with most prices found around $194. If you’re not able to fly to Chicago in November, then December is your next best option. Flight prices from Illinois to Chicago during December average around $204.

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

The cheapest day to depart on your flight to Chicago is on a Wednesday when prices can be found for as low as $396. This is often the case because there is less demand to fly during this day of the week. When flying out on a Monday, the most expensive travel day of the week, you can expect to see flight prices from Illinois to Chicago for around $625.

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

Our most recent data shows that the best time of day to fly to Chicago is in the afternoon. Flights from Illinois to Chicago during this time can be as low as $407. In contrast, the most expensive time of day to depart to Chicago is at noon when prices are around $463.

What is the cheapest Illinois to Chicago flight route?

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

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

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

Cheap Illinois to Chicago flight deals and tips

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

Best Price Found

$83

Fastest flight time

0h 50m

Direct flights

Every day

Airports in Chicago

3 airports
The best one-way flight to Chicago from Illinois in the past 72 hours is $83. The best round-trip flight deal from Illinois to Chicago found on momondo in the last 72 hours is $103.
The fastest flight from Illinois to Chicago takes 0h 50m
Direct flights go from Illinois to Chicago every day.
There are 3 airports in Chicago. From Illinois there are direct flights to Chicago O'Hare Intl (ORD), Chicago Midway (MDW).
Search flight deals

Frequently asked questions about flying from Illinois to Chicago

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

    Prices for flights from Illinois to Chicago are refreshed on a daily basis.

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

  • How old do you have to be to fly from Illinois to Chicago?

    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 Illinois to Chicago.

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

    The travel and health documents you'll need for your trip to Chicago 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 Chicago. 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 Illinois to Chicago?

Best airlines flying from Illinois to Chicago

Compare and see reviews for airlines that fly from Illinois to Chicago with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $179Free CancellationRating
7.4
10,214 reviews
Search United Airlines flights
American AirlinesPriceFrom $179Free CancellationRating
7.1
12,063 reviews
Search American Airlines flights

Traveling to a place near Chicago?

Book flights to Chicago if you plan to visit one of these locations
Merrillville
New Buffalo
Hammond
Portage
Benton Harbor
Lansing
Saint Joseph
Valparaiso
Schererville
Munster
Chesterton
Monticello
Porter
Crown Point
Griffith
Saint John

Why use momondo?

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

It is quick and easy to find Illinois to Chicago flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Chicago that suits you.

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

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

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

Once all potential Illinois to Chicago flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Yes momondo offers price alerts on flights to Chicago from Illinois. 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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Find better results for your trip to the United States

Fly into one of these airports located in Chicago

Chicago Midway Airport
Chicago O'Hare Intl Airport
Chicago Greater Rockford Airport