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$57+ 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 5/29. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — CHI
May 4 — May 111
Sun 5/4
Sun 5/11
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 April 29, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$101
(eDestinos)

One-way from

$57
(Trip.com)

Popular in

April

Cheapest in

January

Average price

$1,040

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.
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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. 38% potential increase in price ($188 potential increase over avg. RT price).
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Cheapest flight prices on average. 31% potential price decrease ($74 potential savings vs. average RT price).
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Average for round-trip flights in April 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 April 29, 2025.

This eDestinos 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/285:40 amUIN - ORD
Nonstop1h 57mSouthern / Mokulele
Thu 5/295:10 pmORD - UIN
Nonstop1h 55mSouthern / Mokulele
Deal found 4/28$101
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/147:00 amDBQ - ORD
Nonstop0h 55mDenver Air Connection
Wed 6/185:00 pmORD - DBQ
Nonstop0h 55mDenver Air Connection
Deal found 4/28$118
This Trip.com deal was found by Cheapflights users on 4/27. 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.
Mon 5/265:15 pmSTL - ORD
1 stop14h 25mSouthern / Mokulele
Mon 6/28:25 amORD - STL
1 stop11h 45mSouthern / Mokulele
Deal found 4/27$125
This United 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 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 4/28$159
This Frontier 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 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 4/28$162
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/212:52 pmSTL - MDW
1 stop7h 36mFrontier
Sat 7/196:20 amMDW - STL
1 stop7h 39mFrontier
Deal found 4/28$163
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/36:45 amPIA - ORD
Nonstop1h 06mUnited Airlines
Mon 6/92:10 pmORD - PIA
Nonstop1h 08mUnited Airlines
Deal found 4/28$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.
Wed 6/116:34 pmMLI - ORD
Nonstop1h 19mAmerican Airlines
Mon 6/1610:40 pmORD - MLI
Nonstop1h 02mAmerican Airlines
Deal found 4/28$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 CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/95:40 pmSTL - ORD
1 stop13h 28mMultiple Airlines
Mon 7/147:05 amORD - STL
1 stop5h 05mMultiple Airlines
Deal found 4/28$195
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/275:00 pmSTL - MDW
Nonstop1h 10mSouthwest
Tue 6/39:10 amMDW - STL
Nonstop1h 10mSouthwest
Deal found 4/28$217
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/276:30 amSTL - ORD
Nonstop1h 32mUnited Airlines
Tue 6/310:54 amORD - STL
Nonstop1h 26mUnited Airlines
Deal found 4/28$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 April 29, 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

QuincyChicago

UIN - ORD

UINORD

Quincy Regional

Wed 5/28

5:40 am-7:37 am

Nonstop1h 57m

Chicago O'Hare Intl

Thu 5/29

1:10 pm-3:05 pm

Nonstop1h 55m

$101

DubuqueChicago

DBQ - ORD

DBQORD

Dubuque

Sat 6/14

7:00 am-7:55 am

Nonstop0h 55m

Chicago O'Hare Intl

Wed 6/18

5:00 pm-5:55 pm

Nonstop0h 55m

$118

St. LouisChicago

STL - ORD

STLORD

Lambert-St Louis

Mon 5/26

5:15 pm-7:40 am

1 stop14h 25m

Chicago O'Hare Intl

Mon 6/2

8:25 am-8:10 pm

1 stop11h 45m

$125

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 - MDW

STLMDW

Lambert-St Louis

Sat 6/21

2:52 pm-10:28 pm

1 stop7h 36m

Chicago Midway

Sat 7/19

6:20 am-1:59 pm

1 stop7h 39m

$163

MolineChicago

MLI - ORD

MLIORD

Moline Quad-City

Wed 6/11

6:34 pm-7:53 pm

Nonstop1h 19m

Chicago O'Hare Intl

Mon 6/16

10:40 pm-11:42 pm

Nonstop1h 02m

$179

PeoriaChicago

PIA - ORD

PIAORD

Greater Peoria

Tue 6/3

6:45 am-7:51 am

Nonstop1h 06m

Chicago O'Hare Intl

Mon 6/9

2:10 pm-3:18 pm

Nonstop1h 08m

$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

St. LouisChicago

STL - ORD

STLORD

Lambert-St Louis

Wed 7/9

5:40 pm-7:08 am

1 stop13h 28m

Chicago O'Hare Intl

Mon 7/14

7:05 am-12:10 pm

1 stop5h 05m

$195

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

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.

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 April 29, 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 April 29, 2025.
Read reviews from past customers who have flown Alaska Airlines, Southwest and Delta from Illinois to Chicago. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,961 reviews

Comfort

7.9

Entertainment

7.1

Boarding

8.2

Overall

8.0

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
9,961 reviews
Alaska Airlines
8.0
Very good
9,961 reviews

Comfort

7.9

Entertainment

7.1

Boarding

8.2

Overall

8.0

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,295 reviews
Alaska Airlines
8.0
Very good
9,961 reviews

Comfort

7.9

Entertainment

7.1

Boarding

8.2

Overall

8.0

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,929 reviews
Alaska Airlines
8.0
Very good
9,961 reviews

Comfort

7.9

Entertainment

7.1

Boarding

8.2

Overall

8.0

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,696 reviews
Alaska Airlines
8.0
Very good
9,961 reviews

Comfort

7.9

Entertainment

7.1

Boarding

8.2

Overall

8.0

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
9,961 reviews

Comfort

7.9

Entertainment

7.1

Boarding

8.2

Overall

8.0

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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?

    $57 is the cheapest one-way deal found within the past few days, from Southern / Mokulele. You may also be able to find cheap deals on Frontier and American Airlines, with prices starting from $81 and $94, 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 Evansville Dress Regional - 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

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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 April 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$179Average$265FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$179Average$340FlexibilityNo cancel feeOn-time71%

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