Latest deals
Insights
FAQs
Reviews
Price Alerts

Cheap flights from Illinois to Chicago from $47

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to Chicago departing on 8/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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 - 5:10 pm
UIN
-
ORD
1h 35mnonstop
Contour Logo
12:30 pm - 1:50 pm
ORD
-
UIN
1h 20mnonstop
$100Contour
Sat, Aug 29 - Sun, Aug 30
Contour Logo
3:45 pm - 5:10 pm
BRL
-
ORD
1h 25mnonstop
Contour Logo
5:50 pm - 7:10 pm
ORD
-
BRL
1h 20mnonstop
$101Contour
Thu, Jul 2 - Sun, Jul 5
United Airlines Logo
9:37 am - 10:45 am
DEC
-
ORD
1h 08mnonstop
United Airlines Logo
4:45 pm - 5:56 pm
ORD
-
DEC
1h 11mnonstop
$149United Airlines
Wed, Jul 1 - Tue, Jul 7
United Airlines Logo
9:37 am - 10:45 am
DEC
-
ORD
1h 08mnonstop
United Airlines Logo
4:45 pm - 5:56 pm
ORD
-
DEC
1h 11mnonstop
$159United Airlines
Wed, Jul 8 - Tue, Jul 14
Frontier Logo
6:34 pm - 7:53 pm
STL
-
ORD
25h 19m
1 stop
Frontier Logo
7:05 am - 5:37 pm
ORD
-
STL
10h 32m
1 stop
$221Frontier
Thu, Aug 6 - Tue, Aug 11
Frontier Logo
10:35 am - 7:44 pm
STL
-
ORD
9h 09m
1 stop
Frontier Logo
2:03 pm - 9:40 am
ORD
-
STL
19h 37m
1 stop
$222Frontier
Wed, Sep 16 - Sat, Sep 19
American Airlines Logo
8:41 pm - 10:18 pm
STL
-
ORD
1h 37mnonstop
American Airlines Logo
11:15 am - 12:41 pm
ORD
-
STL
1h 26mnonstop
$223American Airlines
Tue, Jul 7 - Mon, Jul 13
American Airlines Logo
7:22 pm - 8:52 pm
MLI
-
ORD
1h 30mnonstop
American Airlines Logo
10:05 am - 11:13 am
ORD
-
MLI
1h 08mnonstop
$249American Airlines
Sat, Aug 8 - Mon, Aug 10
Multiple Airlines Logo
9:55 am - 11:30 am
UIN
-
ORD
1h 35mnonstop
Multiple Airlines Logo
8:05 am - 9:25 am
ORD
-
UIN
25h 20m
2 stops
$287Multiple Airlines
Thu, Jul 9 - Thu, Jul 16
Multiple Airlines Logo
7:31 pm - 11:10 pm
SPI
-
ORD
27h 39m
1 stop
Multiple Airlines Logo
5:13 pm - 6:51 pm
ORD
-
SPI
25h 38m
1 stop
$377Multiple Airlines
Wed, Jul 8 - Tue, Jul 14

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

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

Trusted and free

Trusted and free

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

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

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

Our best United Airlines deals on Illinois to Chicago O'Hare Intl Airport flight tickets
United Airlines
Jul 1
DEC6:45 pmDecatur Arpt
1h 08m
ORD7:53 pmChicago O'Hare Intl
Jul 7
ORD4:45 pmChicago O'Hare Intl
1h 11m
DEC5:56 pmDecatur Arpt
$149
United Airlines
Jul 8
DEC6:45 pmDecatur Arpt
1h 08m
ORD7:53 pmChicago O'Hare Intl
Jul 14
ORD4:45 pmChicago O'Hare Intl
1h 11m
DEC5:56 pmDecatur Arpt
$159
United Airlines
Jul 11
DEC6:45 pmDecatur Arpt
1h 08m
ORD7:53 pmChicago O'Hare Intl
Jul 12
ORD7:45 amChicago O'Hare Intl
1h 12m
DEC8:57 amDecatur Arpt
$160

Contour flights from Illinois to Chicago O'Hare Intl Airport

Our best Contour deals on Illinois to Chicago O'Hare Intl Airport flight tickets
Contour
Aug 29
UIN3:35 pmQuincy Regional
1h 35m
ORD5:10 pmChicago O'Hare Intl
Aug 30
ORD12:30 pmChicago O'Hare Intl
1h 20m
UIN1:50 pmQuincy Regional
$100
Contour
Jul 2
BRL3:45 pmBurlington
1h 25m
ORD5:10 pmChicago O'Hare Intl
Jul 5
ORD5:50 pmChicago O'Hare Intl
1h 20m
BRL7:10 pmBurlington
$101
Contour
Jul 10
UIN9:55 amQuincy Regional
1h 35m
ORD11:30 amChicago O'Hare Intl
Jul 17
ORD12:20 pmChicago O'Hare Intl
1h 20m
UIN1:40 pmQuincy Regional
$102

momondo Fare Finder

 
Customize your flight search to find flights from Illinois to Chicago O'Hare Intl Airport that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated June 13, 2026.
Use the filters below to find and compare flights from Illinois to Chicago O'Hare Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

QuincyChicago

UIN - ORD

UINORD

Quincy Regional

Sat 8/29

3:35 pm-5:10 pm

Nonstop1h 35m

Chicago O'Hare Intl

Sun 8/30

12:30 pm-1:50 pm

Nonstop1h 20m

$100

BurlingtonChicago

BRL - ORD

BRLORD

Burlington

Thu 7/2

3:45 pm-5:10 pm

Nonstop1h 25m

Chicago O'Hare Intl

Sun 7/5

5:50 pm-7:10 pm

Nonstop1h 20m

$101
Quickest round-trip

DecaturChicago

DEC - ORD

DECORD

Decatur Arpt

Wed 7/1

9:37 am-10:45 am

Nonstop1h 08m

Chicago O'Hare Intl

Tue 7/7

4:45 pm-5:56 pm

Nonstop1h 11m

$149

DecaturChicago

DEC - ORD

DECORD

Decatur Arpt

Wed 7/8

9:37 am-10:45 am

Nonstop1h 08m

Chicago O'Hare Intl

Tue 7/14

4:45 pm-5:56 pm

Nonstop1h 11m

$159

St. LouisChicago

STL - ORD

STLORD

Lambert-St Louis

Thu 8/6

6:34 pm-7:53 pm

1 stop25h 19m

Chicago O'Hare Intl

Tue 8/11

7:05 am-5:37 pm

1 stop10h 32m

$221

St. LouisChicago

STL - ORD

STLORD

Lambert-St Louis

Wed 9/16

10:35 am-7:44 pm

1 stop9h 09m

Chicago O'Hare Intl

Sat 9/19

2:03 pm-9:40 am

1 stop19h 37m

$222

St. LouisChicago

STL - ORD

STLORD

Lambert-St Louis

Tue 7/7

8:41 pm-10:18 pm

Nonstop1h 37m

Chicago O'Hare Intl

Mon 7/13

11:15 am-12:41 pm

Nonstop1h 26m

$223

MolineChicago

MLI - ORD

MLIORD

Moline Quad-City

Sat 8/8

7:22 pm-8:52 pm

Nonstop1h 30m

Chicago O'Hare Intl

Mon 8/10

10:05 am-11:13 am

Nonstop1h 08m

$249

QuincyChicago

UIN - ORD

UINORD

Quincy Regional

Thu 7/9

9:55 am-11:30 am

Nonstop1h 35m

Chicago O'Hare Intl

Thu 7/16

8:05 am-9:25 am

2 stops25h 20m

$287

SpringfieldChicago

SPI - ORD

SPIORD

Springfield Capital

Wed 7/8

7:31 pm-11:10 pm

1 stop27h 39m

Chicago O'Hare Intl

Tue 7/14

5:13 pm-6:51 pm

1 stop25h 38m

$377

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Chicago from

How to get the cheapest flight ticket from Illinois to Chicago O'Hare Intl Airport

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 O'Hare Intl Airport?

The month of October is another great option to travel to Chicago O'Hare Intl Airport, with average flight prices from Illinois averaging around $118.

What is the cheapest day to depart on your flight to Chicago O'Hare Intl Airport?

The cheapest day to depart on your flight to Chicago O'Hare Intl Airport is on a Thursday when prices can be found for as low as $378. This is often the case because there is less demand to fly during this day of the week. On the other hand, Monday is the most expensive day to depart from Illinois because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $571.

What is the cheapest time of day to depart on your flight to Chicago O'Hare Intl Airport?

Flying to Chicago O'Hare Intl Airport from Illinois in the evening is the least expensive time of day to depart. momondo users have found prices as low as $372 when looking at flights departing in the evening. Try not to purchase tickets in the morning because they tend to be around $425. Of course, these prices can vary depending on the time of year and what airport you fly to.

What is the cheapest Illinois to Chicago O'Hare Intl flight route?

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

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

There are 4 cabin classes available to choose from on Illinois to Chicago O'Hare Intl Airport 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 O'Hare Intl Airport flight deals and tips

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

Best Price Found

$68

Fastest flight time

0h 50m

Direct flights

Every day
The best one-way flight to Chicago O'Hare Intl Airport from Illinois in the past 72 hours is $68. The best round-trip flight deal from Illinois to Chicago O'Hare Intl Airport found on momondo in the last 72 hours is $208.
The fastest flight from Illinois to Chicago O'Hare Intl Airport takes 0h 50m
Direct flights go from Illinois to Chicago O'Hare Intl Airport every day.
Search flight deals

Frequently asked questions about flying from Illinois to Chicago O'Hare Intl Airport

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

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

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

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

    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 Illinois to Chicago O'Hare Intl Airport.

  • What documentation or ID do you need to fly to Chicago O'Hare Intl Airport?

    The travel and health documents required for your trip to Chicago O'Hare Intl Airport 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 Chicago O'Hare Intl Airport. 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 Illinois to Chicago O'Hare Intl Airport?

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

Compare and see reviews for airlines that fly from Illinois to Chicago O'Hare Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $179Free CancellationRating
7.4
9,815 reviews
Search United Airlines flights
American AirlinesPriceFrom $179Free CancellationRating
7.1
11,649 reviews
Search American Airlines flights

Traveling to a place near Chicago?

Book flights to Chicago if you plan to visit one of these locations
Lake Geneva
South Haven
Schaumburg
Rockford
Merrillville
Gurnee
Rosemont
Naperville
Orland Park
New Buffalo
Oak Brook
Kenosha
Joliet
Aurora
Racine
Hammond
Janesville
Elgin
Evanston
Tinley Park

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Chicago from Illinois.

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

Yes. momondo allows you to filter the results for Illinois to Chicago flights to just show those with flexible booking policies.

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?

If you are simply researching potential flights to Chicago, momondo offers a useful price alert feature which will track prices for flights to Chicago from Illinois and alert you when they change.

An easier way to manage your Chicago O'Hare Intl Airport trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Mon 7/13
Mon 7/20
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Chicago