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$68+ Cheap flights from Illinois to Chicago (CHI)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/15. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — CHI
Dec 27 — Jan 31
Fri 12/27
Fri 1/3
1 adult, Economy
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Cheap flight deals from Illinois to Chicago

Discover tips and strategies to find the most affordable flight options for your journey from Illinois (USIL) to Chicago (CHI). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 22, 2024.

Round-trip from

$68
(Mytrip)
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 December 22, 2024.

This United Airlines deal was found by Cheapflights users on 12/21. 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 12/283:19 pmDEC - ORD
Nonstop1h 11mUnited Airlines
Sat 1/41:35 pmORD - DEC
Nonstop1h 07mUnited Airlines
Deal found 12/21$173
This Mytrip deal was found by Cheapflights users on 12/20. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/3112:15 pmSTL - ORD
1 stop19h 25mSouthern / Mokulele
Thu 1/212:30 pmORD - STL
1 stop20h 20mSouthern / Mokulele
Deal found 12/20$211
This American Airlines deal was found by Cheapflights users on 12/21. 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.
Fri 12/275:45 amMLI - ORD
Nonstop1h 24mAmerican Airlines
Sat 12/289:00 pmORD - MLI
Nonstop1h 11mAmerican Airlines
Deal found 12/21$249
This Mytrip deal was found by Cheapflights users on 12/20. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/314:27 pmSTL - ORD
2 stops15h 20mMultiple Airlines
Thu 1/27:05 amORD - STL
1 stop25h 45mMultiple Airlines
Deal found 12/20$386
This United Airlines deal was found by Cheapflights users on 12/21. 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 12/258:50 amMLI - ORD
1 stop26h 35mUnited Airlines
Thu 12/262:00 pmORD - MLI
Nonstop1h 05mUnited Airlines
Deal found 12/21$409
This United deal was found by Cheapflights users on 12/21. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/308:00 amSTL - ORD
Nonstop1h 36mUnited Airlines
Wed 1/12:20 pmORD - STL
Nonstop1h 27mUnited Airlines
Deal found 12/21$429
This American Airlines deal was found by Cheapflights users on 12/21. 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.
Mon 12/305:03 amSTL - ORD
1 stop7h 09mAmerican Airlines
Wed 1/18:42 pmORD - STL
Nonstop1h 37mAmerican Airlines
Deal found 12/21$439
This United Airlines deal was found by Cheapflights users on 12/21. 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.
Fri 12/2711:55 amPIA - ORD
Nonstop1h 12mUnited Airlines
Sun 12/2912:45 pmORD - PIA
Nonstop1h 03mUnited Airlines
Deal found 12/21$504
This Delta deal was found by Cheapflights users on 12/21. 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.
Fri 12/273:24 pmSTL - MDW
1 stop6h 42mDelta
Tue 12/315:51 pmMDW - STL
1 stop3h 52mDelta
Deal found 12/21$504
This American Airlines deal was found by Cheapflights users on 12/21. 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.
Mon 12/232:41 pmPIA - ORD
Nonstop1h 24mAmerican Airlines
Thu 12/261:04 pmORD - PIA
Nonstop1h 10mAmerican Airlines
Deal found 12/21$549
This Delta deal was found by Cheapflights users on 12/21. 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.
Mon 12/306:29 amSTL - ORD
1 stop6h 39mDelta
Wed 1/112:30 pmORD - STL
2 stops9h 36mDelta
Deal found 12/21$575
This Southwest deal was found by Cheapflights users on 12/21. 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.
Thu 12/269:55 pmSTL - MDW
Nonstop1h 10mSouthwest
Sun 12/299:40 amMDW - STL
Nonstop1h 15mSouthwest
Deal found 12/21$608

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 December 22, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

BurlingtonChicago

BRL - ORD

BRLORD

Burlington

Wed 1/15

6:00 am-7:40 am

Nonstop1h 40m

Chicago O'Hare Intl

Tue 1/21

8:25 am-10:05 am

Nonstop1h 40m

$68

St. LouisChicago

STL - ORD

STLORD

Lambert-St Louis

Fri 3/14

9:20 am-4:32 pm

1 stop7h 12m

Chicago O'Hare Intl

Mon 3/24

8:25 am-8:10 pm

1 stop11h 45m

$140

St. LouisChicago

STL - ORD

STLORD

Lambert-St Louis

Fri 1/10

12:15 pm-3:50 pm

1 stop3h 35m

Chicago O'Hare Intl

Sun 1/12

4:11 pm-11:27 pm

1 stop7h 16m

$157

DecaturChicago

DEC - ORD

DECORD

Decatur Arpt

Mon 1/20

6:39 pm-7:50 pm

Nonstop1h 11m

Chicago O'Hare Intl

Mon 1/27

7:45 am-8:55 am

Nonstop1h 10m

$158

St. LouisChicago

STL - MDW

STLMDW

Lambert-St Louis

Thu 1/9

2:50 pm-4:00 pm

Nonstop1h 10m

Chicago Midway

Mon 1/13

9:05 am-10:20 am

Nonstop1h 15m

$158

DubuqueChicago

DBQ - ORD

DBQORD

Dubuque

Tue 2/11

3:55 pm-4:50 pm

Nonstop0h 55m

Chicago O'Hare Intl

Fri 2/14

2:30 pm-3:25 pm

Nonstop0h 55m

$171

St. LouisChicago

STL - ORD

STLORD

Lambert-St Louis

Sun 1/12

5:44 am-7:12 am

Nonstop1h 28m

Chicago O'Hare Intl

Tue 1/14

9:55 am-11:23 am

Nonstop1h 28m

$171

St. LouisChicago

STL - MDW

STLMDW

Lambert-St Louis

Mon 2/3

6:43 am-1:05 pm

1 stop6h 22m

Chicago Midway

Mon 2/10

10:19 am-4:53 pm

1 stop6h 34m

$176

MolineChicago

MLI - ORD

MLIORD

Moline Quad-City

Sun 2/2

12:55 pm-2:09 pm

Nonstop1h 14m

Chicago O'Hare Intl

Sun 2/9

9:50 am-10:53 am

Nonstop1h 03m

$179

St. LouisChicago

STL - ORD

STLORD

Lambert-St Louis

Thu 1/9

6:00 am-10:43 am

1 stop4h 43m

Chicago O'Hare Intl

Mon 1/13

4:58 pm-11:14 pm

2 stops6h 16m

$181

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/21

Showing 1-10 of 44 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 $317). 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 December 22, 2024.

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 December 22, 2024.
Read reviews from past customers who have flown United Airlines, American Airlines and Southern / Mokulele 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
4,804 reviews

Boarding

8.2

Food

7.2

Crew

8.7

Comfort

8.1

Entertainment

7.7

Overall

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Southwest
8.1
Very good
4,804 reviews
Southwest
8.1
Very good
4,804 reviews

Boarding

8.2

Food

7.2

Crew

8.7

Comfort

8.1

Entertainment

7.7

Overall

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Delta
8.0
Very good
8,594 reviews
Southwest
8.1
Very good
4,804 reviews

Boarding

8.2

Food

7.2

Crew

8.7

Comfort

8.1

Entertainment

7.7

Overall

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

United Airlines
7.4
Good
9,028 reviews
Southwest
8.1
Very good
4,804 reviews

Boarding

8.2

Food

7.2

Crew

8.7

Comfort

8.1

Entertainment

7.7

Overall

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
4,804 reviews

Boarding

8.2

Food

7.2

Crew

8.7

Comfort

8.1

Entertainment

7.7

Overall

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

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?

    $79 is the cheapest one-way deal found within the past few days, from Southwest. You may also be able to find cheap deals on Frontier and Delta, with prices starting from $80 and $87, 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 $317). 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

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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 December 22, 2024.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$178Average$266FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$178Average$360FlexibilityNo cancel feeOn-time71%
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