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$62+ 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 3/7. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — CHI
Nov 25 — Dec 21
Mon 11/25
Mon 12/2
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 November 20, 2024.

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 November 20, 2024.

This Booking.com deal was found by Cheapflights users on 11/18. 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 12/122:00 pmSTL - ORD
1 stop26h 10mSouthern / Mokulele
Fri 12/139:25 pmORD - STL
1 stop14h 05mSouthern / Mokulele
Deal found 11/18$119
This United Airlines deal was found by Cheapflights users on 11/19. 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.
Tue 12/1711:20 amSTL - ORD
Nonstop1h 27mUnited Airlines
Tue 12/242:20 pmORD - STL
Nonstop1h 27mUnited Airlines
Deal found 11/19$137
This Frontier deal was found by Cheapflights users on 11/19. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/63:34 pmSTL - MDW
1 stop5h 28mFrontier
Mon 12/911:33 amMDW - STL
1 stop11h 51mFrontier
Deal found 11/19$138
This American Airlines deal was found by Cheapflights users on 11/19. 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.
Tue 12/175:45 amSTL - ORD
Nonstop1h 27mAmerican Airlines
Tue 12/248:15 amORD - STL
Nonstop1h 21mAmerican Airlines
Deal found 11/19$138
This Southwest deal was found by Cheapflights users on 11/19. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/309:55 pmSTL - MDW
Nonstop1h 10mSouthwest
Wed 1/17:15 amMDW - STL
Nonstop1h 20mSouthwest
Deal found 11/19$143
This United Airlines deal was found by Cheapflights users on 11/19. 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.
Mon 12/93:17 pmDEC - ORD
Nonstop1h 08mUnited Airlines
Sun 12/157:45 amORD - DEC
Nonstop1h 03mUnited Airlines
Deal found 11/19$148
This Orbitz deal was found by Cheapflights users on 11/19. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/61:00 pmSTL - ORD
1 stop3h 32mMultiple Airlines
Mon 12/910:59 amORD - STL
1 stop12h 25mMultiple Airlines
Deal found 11/19$168
This Delta deal was found by Cheapflights users on 11/19. 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.
Tue 12/176:30 amSTL - MDW
1 stop6h 20mDelta
Tue 12/244:50 pmMDW - STL
1 stop5h 16mDelta
Deal found 11/19$176
This American Airlines deal was found by Cheapflights users on 11/20. 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.
Fri 12/1311:21 amMLI - ORD
Nonstop1h 16mAmerican Airlines
Sun 12/155:12 pmORD - MLI
Nonstop0h 55mAmerican Airlines
Deal found 11/20$179
This Delta deal was found by Cheapflights users on 11/19. 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.
Mon 12/166:00 amSTL - ORD
2 stops7h 00mDelta
Tue 12/3110:30 amORD - STL
1 stop6h 29mDelta
Deal found 11/19$181
This Expedia deal was found by Cheapflights users on 11/20. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/93:55 pmDBQ - ORD
Nonstop0h 55mDenver Air Connection
Thu 12/122:30 pmORD - DBQ
Nonstop0h 55mDenver Air Connection
Deal found 11/20$218
This United deal was found by Cheapflights users on 11/18. 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 12/95:46 pmMLI - ORD
Nonstop1h 08mUnited Airlines
Mon 12/169:10 amORD - MLI
Nonstop1h 12mUnited Airlines
Deal found 11/18$239

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 2,629,791 searches. Data last updated November 20, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

St. LouisChicago

STL - ORD

STLORD

Lambert-St Louis

Fri 1/31

5:00 pm-7:40 am

1 stop14h 40m

Chicago O'Hare Intl

Mon 2/17

8:20 pm-11:45 am

1 stop15h 25m

$115

St. LouisChicago

STL - ORD

STLORD

Lambert-St Louis

Tue 12/17

11:20 am-12:47 pm

Nonstop1h 27m

Chicago O'Hare Intl

Tue 12/24

2:20 pm-3:47 pm

Nonstop1h 27m

$137

St. LouisChicago

STL - MDW

STLMDW

Lambert-St Louis

Fri 12/6

3:34 pm-9:02 pm

1 stop5h 28m

Chicago Midway

Mon 12/9

11:33 am-11:24 pm

1 stop11h 51m

$138

St. LouisChicago

STL - ORD

STLORD

Lambert-St Louis

Tue 12/17

5:45 am-7:12 am

Nonstop1h 27m

Chicago O'Hare Intl

Tue 12/24

8:15 am-9:36 am

Nonstop1h 21m

$138

St. LouisChicago

STL - MDW

STLMDW

Lambert-St Louis

Mon 12/30

9:55 pm-11:05 pm

Nonstop1h 10m

Chicago Midway

Wed 1/1

7:15 am-8:35 am

Nonstop1h 20m

$143

DecaturChicago

DEC - ORD

DECORD

Decatur Arpt

Mon 12/9

3:17 pm-4:25 pm

Nonstop1h 08m

Chicago O'Hare Intl

Sun 12/15

7:45 am-8:48 am

Nonstop1h 03m

$148

St. LouisChicago

STL - ORD

STLORD

Lambert-St Louis

Fri 12/6

1:00 pm-4:32 pm

1 stop3h 32m

Chicago O'Hare Intl

Mon 12/9

10:59 am-11:24 pm

1 stop12h 25m

$168

St. LouisChicago

STL - MDW

STLMDW

Lambert-St Louis

Tue 12/17

6:30 am-12:50 pm

1 stop6h 20m

Chicago Midway

Tue 12/24

4:50 pm-10:06 pm

1 stop5h 16m

$176

DubuqueChicago

DBQ - ORD

DBQORD

Dubuque

Sun 1/5

3:55 pm-4:50 pm

Nonstop0h 55m

Chicago O'Hare Intl

Mon 1/13

2:30 pm-3:25 pm

Nonstop0h 55m

$176

MolineChicago

MLI - ORD

MLIORD

Moline Quad-City

Fri 12/13

11:21 am-12:37 pm

Nonstop1h 16m

Chicago O'Hare Intl

Sun 12/15

5:12 pm-6:07 pm

Nonstop0h 55m

$179

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/19

Showing 1-10 of 54 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, September is the cheapest month in which you can book a flight from Illinois to Chicago (average of $232). Flying from Illinois to Chicago in June is currently the most expensive (average of $308). 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 November 20, 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 November 20, 2024.
Read reviews from past customers who have flown Delta, United 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
5,014 reviews

Crew

8.7

Overall

8.1

Food

7.2

Entertainment

7.7

Comfort

8.1

Boarding

8.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Southwest
8.1
Very good
5,014 reviews
Southwest
8.1
Very good
5,014 reviews

Crew

8.7

Overall

8.1

Food

7.2

Entertainment

7.7

Comfort

8.1

Boarding

8.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Delta
8.0
Very good
8,756 reviews
Southwest
8.1
Very good
5,014 reviews

Crew

8.7

Overall

8.1

Food

7.2

Entertainment

7.7

Comfort

8.1

Boarding

8.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

United Airlines
7.4
Good
9,171 reviews
Southwest
8.1
Very good
5,014 reviews

Crew

8.7

Overall

8.1

Food

7.2

Entertainment

7.7

Comfort

8.1

Boarding

8.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

WestJet
7.3
Good
2,811 reviews
Southwest
8.1
Very good
5,014 reviews

Crew

8.7

Overall

8.1

Food

7.2

Entertainment

7.7

Comfort

8.1

Boarding

8.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
5,014 reviews

Crew

8.7

Overall

8.1

Food

7.2

Entertainment

7.7

Comfort

8.1

Boarding

8.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

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?

    $62 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 Southwest, with prices starting from $65 and $69, 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 Moline Quad-City - 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, September is the cheapest month in which you can book a flight from Illinois to Chicago (average of $232). Flying from Illinois to Chicago in June is currently the most expensive (average of $308). 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.

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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 2,629,791 searches. Data last updated November 20, 2024.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$148Average$235FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$178Average$364FlexibilityNo cancel feeOn-time71%
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