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$59+ 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 4/1. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — CHI
feb. 25 — mar. 41
mar. 2/25
mar. 3/4
1 adult, Economy
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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 febrero 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$120
(American Airlines)

One-way from

$59
(Southwest)

Popular in

April

Cheapest in

January

Average price

$196

Good round-trip deal

$171 or less

Good one-way deal

$93 or less
Provider with most accurate pricing for Moline Quad-City-Chicago (CHI) flight deals.
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Provider most trusted by Cheapflights users for Moline Quad-City-Chicago (CHI) flights.
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From Illinois to Chicago (CHI)
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One-way flight from Illinois to Chicago (CHI)
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Highest demand for flights based on searches. 14% potential increase in price ($40 potential increase over avg. RT price).
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Cheapest flight prices on average. 8% potential price decrease ($21 potential savings vs. average RT price).
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Average for round-trip flights in February 2025
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Price to beat on a round-trip flight from Illinois to Chicago (CHI).
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Price to beat on a one-way flight from Illinois to Chicago (CHI).
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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 febrero 20, 2025.

This American Airlines deal was found by Cheapflights users on 2/20. 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.
mar. 5/136:00 amSTL - ORD
Nonstop1h 23mAmerican Airlines
jue. 5/1510:21 pmORD - STL
Nonstop1h 20mAmerican Airlines
Deal found 2/20$120
This eDestinos deal was found by Cheapflights users on 2/20. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 5/1312:15 pmSTL - ORD
1 stop3h 35mSouthern / Mokulele
jue. 5/158:25 amORD - STL
1 stop11h 45mSouthern / Mokulele
Deal found 2/20$123
This Southwest deal was found by Cheapflights users on 2/20. 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.
jue. 3/64:00 pmSTL - MDW
1 stop6h 05mSouthwest
lun. 3/104:25 pmMDW - STL
Nonstop1h 15mSouthwest
Deal found 2/20$127
This Kiwi.com deal was found by Cheapflights users on 2/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 3/1411:00 amSTL - ORD
Nonstop1h 17mMultiple Airlines
lun. 3/178:25 amORD - STL
1 stop11h 45mMultiple Airlines
Deal found 2/20$127
This Frontier deal was found by Cheapflights users on 2/20. 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.
lun. 3/246:55 pmSTL - MDW
1 stop10h 36mFrontier
lun. 4/141:23 pmMDW - STL
1 stop10h 23mFrontier
Deal found 2/20$130
This Denver Air Connection deal was found by Cheapflights users on 2/20. 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.
mar. 4/83:55 pmDBQ - ORD
Nonstop0h 55mDenver Air Connection
dom. 4/132:30 pmORD - DBQ
Nonstop0h 55mDenver Air Connection
Deal found 2/20$138
This Southwest deal was found by Cheapflights users on 2/20. 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.
mar. 5/135:20 amSTL - ORD
2 stops8h 40mSouthwest
jue. 5/155:45 pmORD - STL
1 stop5h 00mSouthwest
Deal found 2/20$142
This United Airlines deal was found by Cheapflights users on 2/19. 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.
vie. 3/79:50 amDEC - ORD
Nonstop1h 05mUnited Airlines
dom. 3/91:15 pmORD - DEC
Nonstop0h 58mUnited Airlines
Deal found 2/19$159
This United Airlines deal was found by Cheapflights users on 2/20. 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.
mar. 3/186:30 amSTL - ORD
Nonstop1h 31mUnited Airlines
jue. 3/201:01 pmORD - STL
Nonstop1h 22mUnited Airlines
Deal found 2/20$163
This Delta deal was found by Cheapflights users on 2/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 3/186:50 amSTL - MDW
1 stop5h 46mDelta
vie. 4/117:09 pmMDW - STL
1 stop3h 55mDelta
Deal found 2/20$177
This American Airlines deal was found by Cheapflights users on 2/19. 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.
sáb. 7/2611:26 amMLI - ORD
Nonstop1h 09mAmerican Airlines
sáb. 8/210:00 pmORD - MLI
Nonstop0h 58mAmerican Airlines
Deal found 2/19$179
This Delta deal was found by Cheapflights users on 2/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 4/410:30 amSTL - ORD
1 stop5h 41mDelta
sáb. 4/196:45 amORD - STL
2 stops10h 01mDelta
Deal found 2/19$182

Find flights from Illinois to Chicago within your budget

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 febrero 20, 2025.

Fly from

Illinois

Fly to

Chicago

Route

Depart

Return

Price

St. LouisChicago

STL - ORD

STLORD

Lambert-St Louis

mar. 5/13

6:00 am-7:23 am

Nonstop1h 23m

Chicago O'Hare Intl

jue. 5/15

10:21 pm-11:41 pm

Nonstop1h 20m

$120

St. LouisChicago

STL - ORD

STLORD

Lambert-St Louis

mar. 5/13

12:15 pm-3:50 pm

1 stop3h 35m

Chicago O'Hare Intl

jue. 5/15

8:25 am-8:10 pm

1 stop11h 45m

$123

St. LouisChicago

STL - MDW

STLMDW

Lambert-St Louis

jue. 3/6

4:00 pm-10:05 pm

1 stop6h 05m

Chicago Midway

lun. 3/10

4:25 pm-5:40 pm

Nonstop1h 15m

$127

St. LouisChicago

STL - ORD

STLORD

Lambert-St Louis

vie. 3/14

11:00 am-12:17 pm

Nonstop1h 17m

Chicago O'Hare Intl

lun. 3/17

8:25 am-8:10 pm

1 stop11h 45m

$127

St. LouisChicago

STL - MDW

STLMDW

Lambert-St Louis

lun. 3/24

6:55 pm-5:31 am

1 stop10h 36m

Chicago Midway

lun. 4/14

1:23 pm-11:46 pm

1 stop10h 23m

$130

DubuqueChicago

DBQ - ORD

DBQORD

Dubuque

vie. 4/11

3:55 pm-4:50 pm

Nonstop0h 55m

Chicago O'Hare Intl

dom. 4/13

2:30 pm-3:25 pm

Nonstop0h 55m

$132

St. LouisChicago

STL - ORD

STLORD

Lambert-St Louis

mar. 5/13

5:20 am-2:00 pm

2 stops8h 40m

Chicago O'Hare Intl

jue. 5/15

5:45 pm-10:45 pm

1 stop5h 00m

$142

DecaturChicago

DEC - ORD

DECORD

Decatur Arpt

vie. 3/7

9:50 am-10:55 am

Nonstop1h 05m

Chicago O'Hare Intl

dom. 3/9

1:15 pm-2:13 pm

Nonstop0h 58m

$159

St. LouisChicago

STL - ORD

STLORD

Lambert-St Louis

mar. 3/18

6:30 am-8:01 am

Nonstop1h 31m

Chicago O'Hare Intl

jue. 3/20

1:01 pm-2:23 pm

Nonstop1h 22m

$163

St. LouisChicago

STL - MDW

STLMDW

Lambert-St Louis

mar. 3/18

6:50 am-12:36 pm

1 stop5h 46m

Chicago Midway

vie. 4/11

7:09 pm-11:04 pm

1 stop3h 55m

$177

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

Showing 1-10 of 50 results
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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.

Travel insights for flights from Illinois to Chicago

Get recent, data-driven insights about flights from Illinois to Chicago including ideal travel times, pricing trends, and more.

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 febrero 20, 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 febrero 20, 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
8.1
Very good
4,411 reviews

Crew

8.7

Food

7.1

Comfort

8.1

Overall

8.1

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Southwest
8.1
Very good
4,411 reviews
Southwest
8.1
Very good
4,411 reviews

Crew

8.7

Food

7.1

Comfort

8.1

Overall

8.1

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Delta
8.0
Very good
8,220 reviews
Southwest
8.1
Very good
4,411 reviews

Crew

8.7

Food

7.1

Comfort

8.1

Overall

8.1

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

United Airlines
7.4
Good
8,766 reviews
Southwest
8.1
Very good
4,411 reviews

Crew

8.7

Food

7.1

Comfort

8.1

Overall

8.1

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
4,411 reviews

Crew

8.7

Food

7.1

Comfort

8.1

Overall

8.1

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

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?

    $59 is the cheapest one-way deal found within the past few days, from Southwest. You may also be able to find cheap deals on American Airlines and Frontier, with prices starting from $59 and $62, 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 Decatur Arpt - 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
New Buffalo
Hammond
Benton Harbor
Porter
Lansing
Valparaiso
Chesterton

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Alternative routes for Illinois to Chicago

See prices for flight routes from nearby airports that may be better suited for you.
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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 febrero 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$178Average$259FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$179Average$347FlexibilityNo cancel feeOn-time71%
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