HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Chicago

$65+ Cheap flights from Illinois to Chicago (CHI)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/14. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — CHI
May 6 — May 131
Tue 5/6
Tue 5/13
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Illinois to Chicago with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Illinois to Chicago

Keep the following information in mind while searching for Illinois to Chicago flight deals. Data was last updated May 1, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$83
(Trip.com)

One-way from

$65
(Kiwi.com)

Popular in

April

Cheapest in

January

Average price

$179

Good round-trip deal

$184 or less

Good one-way deal

$93 or less
Provider with most accurate pricing for Moline Quad-City-Chicago (CHI) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Moline Quad-City-Chicago (CHI) flights.
Search Deals
From Illinois to Chicago (CHI)
Search Deals
One-way flight from Illinois to Chicago (CHI)
Search Deals
Highest demand for flights based on searches. 38% potential increase in price ($188 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 31% potential price decrease ($74 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2025
Search Deals
Price to beat on a round-trip flight from Illinois to Chicago (CHI).
Search Deals
Price to beat on a one-way flight from Illinois to Chicago (CHI).
Search Deals

Find flight deals from Illinois to Chicago

Cheapest flights from Illinois to Chicago
Explore the most affordable flight options available from Illinois to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 1, 2025.

This Trip.com deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/226:00 amBRL - ORD
Nonstop1h 40mSouthern / Mokulele
Sun 5/258:25 amORD - BRL
Nonstop1h 40mSouthern / Mokulele
Deal found 4/30$83
This Denver Air Connection deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Denver Air Connection is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/287:00 amDBQ - ORD
Nonstop0h 55mDenver Air Connection
Wed 6/45:00 pmORD - DBQ
Nonstop0h 55mDenver Air Connection
Deal found 4/30$118
This Ticket deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/2412:15 pmSTL - ORD
1 stop19h 25mSouthern / Mokulele
Sun 5/258:20 pmORD - STL
1 stop15h 25mSouthern / Mokulele
Deal found 4/30$126
This United Airlines deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/246:55 pmDEC - ORD
Nonstop1h 08mUnited Airlines
Sat 5/314:50 pmORD - DEC
Nonstop1h 03mUnited Airlines
Deal found 4/30$159
This Frontier deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/285:45 pmSTL - ORD
1 stop6h 35mFrontier
Wed 6/45:03 pmORD - STL
1 stop6h 34mFrontier
Deal found 4/29$162
This FlightHub deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/2712:15 pmSTL - ORD
1 stop19h 25mMultiple Airlines
Tue 6/35:03 pmORD - STL
1 stop6h 34mMultiple Airlines
Deal found 4/29$167
This United Airlines deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/33:53 pmPIA - ORD
Nonstop1h 11mUnited Airlines
Mon 6/92:10 pmORD - PIA
Nonstop1h 08mUnited Airlines
Deal found 4/29$179
This United Airlines deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/283:47 pmMLI - ORD
Nonstop1h 16mUnited Airlines
Wed 6/41:55 pmORD - MLI
Nonstop1h 07mUnited Airlines
Deal found 4/30$179
This American Airlines deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/35:05 pmPIA - ORD
Nonstop1h 08mAmerican Airlines
Mon 6/910:15 pmORD - PIA
Nonstop1h 04mAmerican Airlines
Deal found 4/28$184
This American Airlines deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/156:32 pmMLI - ORD
Nonstop1h 04mAmerican Airlines
Sun 5/255:06 pmORD - MLI
Nonstop0h 56mAmerican Airlines
Deal found 4/29$184
This Booking.com deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/159:55 pmSTL - MDW
1 stop16h 53mFrontier
Sun 5/186:15 amMDW - STL
1 stop14h 50mFrontier
Deal found 4/29$191
This Southwest deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/248:45 pmSTL - MDW
Nonstop1h 05mSouthwest
Sun 5/2510:50 amMDW - STL
Nonstop1h 20mSouthwest
Deal found 4/30$217

Cheapflights Fare Finder

Customize your flight search to find flights from Illinois to Chicago 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, Cheapflights users made 2,558,603 searches. Data last updated May 1, 2025.
Use the filters below to find and compare flights from Illinois to Chicago that are best for you.

Fly from

Illinois

Fly to

Chicago

Route

Depart

Return

Price

BurlingtonChicago

BRL - ORD

BRLORD

Burlington

Thu 5/22

6:00 am-7:40 am

Nonstop1h 40m

Chicago O'Hare Intl

Sun 5/25

8:25 am-10:05 am

Nonstop1h 40m

$83

DubuqueChicago

DBQ - ORD

DBQORD

Dubuque

Wed 5/28

7:00 am-7:55 am

Nonstop0h 55m

Chicago O'Hare Intl

Wed 6/4

5:00 pm-5:55 pm

Nonstop0h 55m

$118

St. LouisChicago

STL - ORD

STLORD

Lambert-St Louis

Sat 5/24

12:15 pm-7:40 am

1 stop19h 25m

Chicago O'Hare Intl

Sun 5/25

8:20 pm-11:45 am

1 stop15h 25m

$126

DecaturChicago

DEC - ORD

DECORD

Decatur Arpt

Sat 5/24

6:55 pm-8:03 pm

Nonstop1h 08m

Chicago O'Hare Intl

Sat 5/31

4:50 pm-5:53 pm

Nonstop1h 03m

$159

St. LouisChicago

STL - ORD

STLORD

Lambert-St Louis

Wed 5/28

5:45 pm-12:20 am

1 stop6h 35m

Chicago O'Hare Intl

Wed 6/4

5:03 pm-11:37 pm

1 stop6h 34m

$162

St. LouisChicago

STL - ORD

STLORD

Lambert-St Louis

Tue 5/27

12:15 pm-7:40 am

1 stop19h 25m

Chicago O'Hare Intl

Tue 6/3

5:03 pm-11:37 pm

1 stop6h 34m

$167

PeoriaChicago

PIA - ORD

PIAORD

Greater Peoria

Tue 6/3

3:53 pm-5:04 pm

Nonstop1h 11m

Chicago O'Hare Intl

Mon 6/9

2:10 pm-3:18 pm

Nonstop1h 08m

$179

MolineChicago

MLI - ORD

MLIORD

Moline Quad-City

Wed 5/28

3:47 pm-5:03 pm

Nonstop1h 16m

Chicago O'Hare Intl

Wed 6/4

1:55 pm-3:02 pm

Nonstop1h 07m

$179

PeoriaChicago

PIA - ORD

PIAORD

Greater Peoria

Tue 6/3

5:05 pm-6:13 pm

Nonstop1h 08m

Chicago O'Hare Intl

Mon 6/9

10:15 pm-11:19 pm

Nonstop1h 04m

$184

MolineChicago

MLI - ORD

MLIORD

Moline Quad-City

Thu 5/15

6:32 pm-7:36 pm

Nonstop1h 04m

Chicago O'Hare Intl

Sun 5/25

5:06 pm-6:02 pm

Nonstop0h 56m

$184

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

Showing 1-10 of 51 results
1
2
3
...
6

Best time to book a flight from Illinois to Chicago

Have a flexible travel schedule? Discover the best time to fly to Chicago from Illinois with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Illinois to Chicago

What is the cheapest month to book a flight from Illinois to Chicago?

Currently, August is the cheapest month in which you can book a flight from Illinois to Chicago (average of $245). Flying from Illinois to Chicago in March is currently the most expensive (average of $321). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from IL to CHI?

Find hourly flight availability from Illinois to Chicago. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated May 1, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Illinois to Chicago as you normally would.

Rainfall in Chicago by month

Plan your trip to Chicago by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Chicago ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Chicago when rainfall is around 1.7 in.

Temperature in Chicago by month

Plan your trip to Chicago by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Chicago, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

Reviews of airlines servicing Chicago

Get insights into the airlines that provide service to Chicago. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Chicago. Reviews last updated May 1, 2025.
Read reviews from past customers who have flown Southwest, Delta and United Airlines from Illinois to Chicago. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,294 reviews

Overall

8.0

Entertainment

7.6

Comfort

8.0

Boarding

8.2

Crew

8.6

Food

7.1

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!
Southwest
8.0
Very good
4,294 reviews
Southwest
8.0
Very good
4,294 reviews

Overall

8.0

Entertainment

7.6

Comfort

8.0

Boarding

8.2

Crew

8.6

Food

7.1

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!
Delta
8.0
Very good
7,934 reviews
Southwest
8.0
Very good
4,294 reviews

Overall

8.0

Entertainment

7.6

Comfort

8.0

Boarding

8.2

Crew

8.6

Food

7.1

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!
United Airlines
7.4
Good
8,696 reviews
Southwest
8.0
Very good
4,294 reviews

Overall

8.0

Entertainment

7.6

Comfort

8.0

Boarding

8.2

Crew

8.6

Food

7.1

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,294 reviews

Overall

8.0

Entertainment

7.6

Comfort

8.0

Boarding

8.2

Crew

8.6

Food

7.1

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!

Related info for your journey

Find useful and relevant information for your journey from Illinois to Chicago. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines to fly from Illinois to Chicago one-way?

    $65 is the cheapest one-way deal found within the past few days, from Denver Air Connection. You may also be able to find cheap deals on Southern / Mokulele and Frontier, with prices starting from $78 and $81, respectively.

  • What are the most popular routes from Illinois to Chicago?

    The most popular flight routes from Illinois to Chicago are Lambert-St Louis - Chicago O'Hare Intl, Lambert-St Louis - Chicago Midway and Greater Peoria - Chicago O'Hare Intl.

  • Can I find deals for flights from Illinois to Chicago that include hotel bookings?

    Yes. In addition to deals on Illinois to Chicago flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Illinois to Chicago?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Illinois to Chicago.

  • Can I find deals for business class flights from Illinois to Chicago?

    Yes. Cheapflights offers flight deals from Illinois to Chicago by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Illinois to Chicago?

    Currently, August is the cheapest month in which you can book a flight from Illinois to Chicago (average of $245). Flying from Illinois to Chicago in March is currently the most expensive (average of $321). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Illinois?

Book flights to Illinois if you plan to visit one of these locations
Merrillville
Hammond
Benton Harbor
Porter
Lansing
Valparaiso
Chesterton

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Illinois to Chicago

See prices for flight routes from nearby airports that may be better suited for you.
LaGuardia to O'Hare Intl flights
Dallas/Fort Worth to O'Hare Intl flights
John F Kennedy Intl to O'Hare Intl flights
Newark to O'Hare Intl flights
John F Kennedy Intl to Midway flights
Newark to Midway flights
Los Angeles to O'Hare Intl flights
Boston to O'Hare Intl flights
Dallas/Fort Worth to Midway flights
Baltimore to O'Hare Intl flights
Philadelphia to O'Hare Intl flights
Reagan-National to O'Hare Intl flights
San Francisco to O'Hare Intl flights
Seattle to O'Hare Intl flights
Dulles Intl to O'Hare Intl flights
Ontario to O'Hare Intl flights
Sky Harbor Intl to O'Hare Intl flights
LaGuardia to Midway flights
Denver to O'Hare Intl flights
San Francisco to Midway flights
Santa Ana to O'Hare Intl flights
Raleigh to O'Hare Intl flights
San Diego to O'Hare Intl flights
Orlando to O'Hare Intl flights
Austin to O'Hare Intl flights
Atlanta to O'Hare Intl flights
Burbank to O'Hare Intl flights
Hobby to O'Hare Intl flights
Dulles Intl to Midway flights
George Bush Intcntl to O'Hare Intl flights
Atlanta to Midway flights
Fort Lauderdale to O'Hare Intl flights
Portland to O'Hare Intl flights
Tampa to O'Hare Intl flights
Hartford to O'Hare Intl flights
Charlotte to O'Hare Intl flights
Los Angeles to Midway flights
Miami to O'Hare Intl flights
Boston to Midway flights
Baltimore to Midway flights
Newark to St. Louis flights
Reagan-National to Midway flights
Hobby to Midway flights
Minneapolis to O'Hare Intl flights
Oakland to O'Hare Intl flights
San Jose to O'Hare Intl flights
Tampa to Midway flights
LaGuardia to St. Louis flights
Minneapolis to Midway flights
Seattle to St. Louis flights

Top 2 airlines flying from Illinois to Chicago

Discover the top 2 airlines that operate flights from Illinois to Chicago. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated May 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$179Average$265FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$179Average$340FlexibilityNo cancel feeOn-time71%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.