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Cheap flights from Illinois to Chicago from $39

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 11/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Cheap round-trip flights

United Airlines Logo
3:20 pm - 4:45 pmSTL-ORD
1h 25mnonstop
United Airlines Logo
2:20 pm - 3:44 pmORD-STL
1h 24mnonstop
$91United Airlines
Find Deal
sáb., sep. 13 - sáb., sep. 20
American Airlines Logo
6:10 am - 7:30 amSTL-ORD
1h 20mnonstop
American Airlines Logo
10:34 pm - 11:48 pmORD-STL
1h 14mnonstop
$92American Airlines
Find Deal
sáb., sep. 13 - lun., sep. 15
Contour Logo
9:40 am - 10:50 amBRL-ORD
1h 10mnonstop
Contour Logo
5:35 pm - 6:55 pmORD-BRL
1h 20mnonstop
$105Contour
Find Deal
jue., oct. 2 - dom., oct. 5
Contour Logo
9:40 am - 10:50 amBRL-ORD
1h 10mnonstop
Contour Logo
12:50 pm - 2:10 pmORD-BRL
1h 20mnonstop
$108Contour
Find Deal
jue., oct. 9 - dom., oct. 12
American Airlines Logo
6:10 am - 7:30 amSTL-ORD
1h 20mnonstop
American Airlines Logo
12:01 pm - 1:23 pmORD-STL
1h 22mnonstop
$117American Airlines
Find Deal
sáb., sep. 13 - mar., sep. 16
Southwest Logo
5:10 am - 10:45 amSTL-ORD
5h 35m1 stop
Southwest Logo
2:55 pm - 7:10 pmORD-STL
4h 15m1 stop
$137Southwest
Find Deal
jue., sep. 4 - lun., sep. 8
Southwest Logo
5:10 am - 10:45 amSTL-ORD
5h 35m1 stop
Southwest Logo
1:30 pm - 9:50 pmORD-STL
8h 20m2 stops
$142Southwest
Find Deal
lun., sep. 8 - mar., sep. 9
United Airlines Logo
6:55 pm - 8:10 pmDEC-ORD
1h 15mnonstop
United Airlines Logo
7:50 am - 8:56 amORD-DEC
1h 06mnonstop
$149United Airlines
Find Deal
dom., sep. 7 - dom., sep. 14
Southern / Mokulele Logo
9:20 am - 7:24 amSTL-ORD
22h 04m1 stop
Southern / Mokulele Logo
1:10 pm - 4:35 pmORD-STL
3h 25m1 stop
$166Southern / Mokulele
Find Deal
jue., sep. 25 - jue., oct. 2
Southern / Mokulele Logo
1:00 pm - 4:32 pmSTL-ORD
3h 32m1 stop
Southern / Mokulele Logo
8:15 am - 12:00 pmORD-STL
3h 45m1 stop
$168Southern / Mokulele
Find Deal
vie., ago. 29 - lun., sep. 1

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

Our best American Airlines deals on Illinois to Chicago O'Hare Intl Airport flight tickets
American Airlines
Sep 13
STL6:10 amLambert-St Louis
1h 20m
ORD7:30 amChicago O'Hare Intl
Sep 15
ORD10:34 pmChicago O'Hare Intl
1h 14m
STL11:48 pmLambert-St Louis
$92
Find similar
American Airlines
Sep 13
STL6:10 amLambert-St Louis
1h 20m
ORD7:30 amChicago O'Hare Intl
Sep 16
ORD12:01 pmChicago O'Hare Intl
1h 22m
STL1:23 pmLambert-St Louis
$117
Find similar
American Airlines
Sep 4
STL7:23 amLambert-St Louis
1h 22m
ORD8:45 amChicago O'Hare Intl
Sep 8
ORD6:59 pmChicago O'Hare Intl
1h 26m
STL8:25 pmLambert-St Louis
$118
Find similar

Delta flights from Illinois to Chicago O'Hare Intl Airport

Our best Delta deals on Illinois to Chicago O'Hare Intl Airport flight tickets
Delta
Sep 13
STL1:26 pmLambert-St Louis
5h 39m
1 stop
ORD7:05 pmChicago O'Hare Intl
Sep 16
ORD5:30 amChicago O'Hare Intl
4h 29m
1 stop
STL9:59 amLambert-St Louis
$177
Find similar
Delta
Sep 13
STL5:05 pmLambert-St Louis
4h 25m
1 stop
ORD9:30 pmChicago O'Hare Intl
Sep 16
ORD1:22 pmChicago O'Hare Intl
9h 47m
2 stops
STL11:09 pmLambert-St Louis
$182
Find similar
Delta
Sep 13
STL6:01 amLambert-St Louis
7h 00m
1 stop
ORD1:01 pmChicago O'Hare Intl
Sep 15
ORD8:10 pmChicago O'Hare Intl
12h 27m
1 stop
STL8:37 amLambert-St Louis
$199
Find similar

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 agosto 11, 2025.
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

St. LouisChicago

STL - ORD

STLORD

Lambert-St Louis

sáb. 9/13

3:20 pm-4:45 pm

Nonstop1h 25m

Chicago O'Hare Intl

sáb. 9/20

2:20 pm-3:44 pm

Nonstop1h 24m

$91

St. LouisChicago

STL - ORD

STLORD

Lambert-St Louis

sáb. 9/13

6:10 am-7:30 am

Nonstop1h 20m

Chicago O'Hare Intl

lun. 9/15

10:34 pm-11:48 pm

Nonstop1h 14m

$92

BurlingtonChicago

BRL - ORD

BRLORD

Burlington

jue. 10/2

9:40 am-10:50 am

Nonstop1h 10m

Chicago O'Hare Intl

dom. 10/5

5:35 pm-6:55 pm

Nonstop1h 20m

$105

BurlingtonChicago

BRL - ORD

BRLORD

Burlington

jue. 10/9

9:40 am-10:50 am

Nonstop1h 10m

Chicago O'Hare Intl

dom. 10/12

12:50 pm-2:10 pm

Nonstop1h 20m

$108

St. LouisChicago

STL - ORD

STLORD

Lambert-St Louis

sáb. 9/13

6:10 am-7:30 am

Nonstop1h 20m

Chicago O'Hare Intl

mar. 9/16

12:01 pm-1:23 pm

Nonstop1h 22m

$117

St. LouisChicago

STL - ORD

STLORD

Lambert-St Louis

jue. 9/4

5:10 am-10:45 am

1 stop5h 35m

Chicago O'Hare Intl

lun. 9/8

2:55 pm-7:10 pm

1 stop4h 15m

$137

St. LouisChicago

STL - ORD

STLORD

Lambert-St Louis

lun. 9/8

5:10 am-10:45 am

1 stop5h 35m

Chicago O'Hare Intl

mar. 9/9

1:30 pm-9:50 pm

2 stops8h 20m

$142

DecaturChicago

DEC - ORD

DECORD

Decatur Arpt

dom. 9/7

6:55 pm-8:10 pm

Nonstop1h 15m

Chicago O'Hare Intl

dom. 9/14

7:50 am-8:56 am

Nonstop1h 06m

$149

St. LouisChicago

STL - ORD

STLORD

Lambert-St Louis

jue. 9/25

9:20 am-7:24 am

1 stop22h 04m

Chicago O'Hare Intl

jue. 10/2

1:10 pm-4:35 pm

1 stop3h 25m

$166

St. LouisChicago

STL - ORD

STLORD

Lambert-St Louis

vie. 8/29

1:00 pm-4:32 pm

1 stop3h 32m

Chicago O'Hare Intl

lun. 9/1

8:15 am-12:00 pm

1 stop3h 45m

$168

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 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 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 Wednesday when prices can be found for as low as $397. This is often the case because there is less demand to fly during this day of the week. On the other hand, Sunday 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 $563.

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 afternoon is the least expensive time of day to depart. momondo users have found prices as low as $426 when looking at flights departing in the afternoon. Try not to purchase tickets at noon because they tend to be around $567. 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 Moline Quad-City 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 flights?

There are 4 cabin classes available to choose from on Illinois to Chicago O'Hare Intl 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

$39

Fastest flight time

1h 05m

Direct flights

Every day
The best one-way flight to Chicago O'Hare Intl Airport from Illinois in the past 72 hours is $39. The best round-trip flight deal from Illinois to Chicago O'Hare Intl Airport found on momondo in the last 72 hours is $91.
The fastest flight from Illinois to Chicago O'Hare Intl Airport takes 1h 05m
Direct flights go from Illinois to Chicago O'Hare Intl Airport every day.
Search flight deals

  • 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
8,920 reviews
Search United Airlines flights
American AirlinesPriceFrom $179Free CancellationRating
7.2
10,000 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
Rockford
South Haven
Schaumburg
Merrillville
Gurnee
Naperville
Rosemont
Kenosha
New Buffalo
Joliet
Oak Brook
Racine
Hammond
Tinley Park
Orland Park
Elgin
Aurora
Janesville
Benton Harbor

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.

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sáb. 8/16
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