$46+ Cheap flights from O'Hare Intl (ORD) to Illinois
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 8/20. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — ORD
Aug 3 — Aug 101
1 adult, Economy
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Find cheap flights from O'Hare Intl to Illinois 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
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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 O'Hare Intl to Illinois
Keep the following information in mind while searching for O'Hare Intl to Illinois flight deals. Data was last updated July 29, 2025.
Round-trip from | $90 (American Airlines) |
|---|---|
One-way from | $46 (American Airlines) |
Good round-trip deal | $130 or less |
Good one-way deal | $82 or less |
Find flight deals from O'Hare Intl to Illinois
Cheapest flights from O'Hare Intl to IllinoisExplore the most affordable flight options available from O'Hare Intl to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.
Explore the most affordable flight options available from O'Hare Intl to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.
This American Airlines deal was found by Cheapflights users on 7/27. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/207:10 pmORD - STL
Nonstop1h 22mAmerican Airlines
Sat 10/45:25 pmSTL - ORD
Nonstop1h 33mAmerican Airlines
Deal found 7/27![American Airlines logo]()
$90
This Mytrip deal was found by Cheapflights users on 7/28. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/255:35 pmORD - BRL
Nonstop1h 20mContour
Mon 9/13:25 pmBRL - ORD
Nonstop1h 20mContour
Deal found 7/28![Contour logo]()
$102
This Southwest deal was found by Cheapflights users on 7/28. 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.
Wed 8/273:10 pmORD - STL
1 stop4h 55mSouthwest
Wed 9/36:25 amSTL - ORD
1 stop6h 20mSouthwest
Deal found 7/28![Southwest logo]()
$141
This United Airlines deal was found by Cheapflights users on 7/28. 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.
Wed 8/137:45 amORD - DEC
Nonstop1h 03mUnited Airlines
Sun 8/176:55 pmDEC - ORD
Nonstop1h 08mUnited Airlines
Deal found 7/28![United Airlines logo]()
$149
This Jettzy deal was found by Cheapflights users on 7/28. 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 Jettzy is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/128:15 amORD - STL
1 stop3h 45mSouthern / Mokulele
Fri 9/199:20 amSTL - ORD
1 stop6h 59mSouthern / Mokulele
Deal found 7/28![Southern / Mokulele logo]()
$167
This eDestinos deal was found by Cheapflights users on 7/26. 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 10/17:20 amORD - STL
1 stop25h 46mFrontier
Thu 10/24:00 pmSTL - ORD
1 stop8h 10mFrontier
Deal found 7/26![Frontier logo]()
$168
This Delta deal was found by Cheapflights users on 7/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/263:30 pmORD - STL
1 stop6h 32mDelta
Sun 8/316:40 amSTL - ORD
1 stop6h 05mDelta
Deal found 7/29![Delta logo]()
$177
This American Airlines deal was found by Cheapflights users on 7/27. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/279:50 amORD - MLI
Nonstop1h 01mAmerican Airlines
Wed 9/36:00 amMLI - ORD
Nonstop1h 09mAmerican Airlines
Deal found 7/27![American Airlines logo]()
$178
This American Airlines deal was found by Cheapflights users on 7/27. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/98:58 amORD - PIA
Nonstop1h 10mAmerican Airlines
Tue 9/166:15 pmPIA - ORD
Nonstop1h 19mAmerican Airlines
Deal found 7/27![American Airlines logo]()
$179
This United Airlines deal was found by Cheapflights users on 7/26. 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.
Sun 8/312:20 pmORD - STL
Nonstop1h 24mUnited Airlines
Sat 9/133:20 pmSTL - ORD
Nonstop1h 25mUnited Airlines
Deal found 7/26![United Airlines logo]()
$181
This FlightHub deal was found by Cheapflights users on 7/29. 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 8/1211:28 amORD - STL
1 stop12h 19mMultiple Airlines
Thu 8/141:00 pmSTL - ORD
1 stop3h 32mMultiple Airlines
Deal found 7/29![Multiple Airlines logo]()
$203
This United Airlines deal was found by Cheapflights users on 7/28. 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.
Wed 9/106:05 pmORD - MLI
Nonstop1h 22mUnited Airlines
Wed 9/176:30 amMLI - ORD
Nonstop1h 17mUnited Airlines
Deal found 7/28![United Airlines logo]()
$232
Cheapflights Fare Finder
Customize your flight search to find flights from O'Hare Intl to Illinois 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 July 29, 2025.
Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to Illinois that are best for you.
Fly from
O'Hare Intl
Fly to
Illinois
Route
Depart
Return
Price
ChicagoSt. Louis
ORD - STL
ORDSTL
Chicago O'Hare Intl
Sat 9/20
7:10 pm-8:32 pm
Nonstop1h 22m
Lambert-St Louis
Sat 10/4
5:25 pm-6:58 pm
Nonstop1h 33m
$90
ChicagoBurlington
ORD - BRL
ORDBRL
Chicago O'Hare Intl
Mon 8/25
5:35 pm-6:55 pm
Nonstop1h 20m
Burlington
Mon 9/1
3:25 pm-4:45 pm
Nonstop1h 20m
$102
ChicagoSt. Louis
ORD - STL
ORDSTL
Chicago O'Hare Intl
Wed 8/27
3:10 pm-8:05 pm
1 stop4h 55m
Lambert-St Louis
Wed 9/3
6:25 am-12:45 pm
1 stop6h 20m
$141
ChicagoDecatur
ORD - DEC
ORDDEC
Chicago O'Hare Intl
Wed 8/13
7:45 am-8:48 am
Nonstop1h 03m
Decatur Arpt
Sun 8/17
6:55 pm-8:03 pm
Nonstop1h 08m
$149
ChicagoSt. Louis
ORD - STL
ORDSTL
Chicago O'Hare Intl
Fri 9/12
8:15 am-12:00 pm
1 stop3h 45m
Lambert-St Louis
Fri 9/19
9:20 am-4:19 pm
1 stop6h 59m
$167
ChicagoSt. Louis
ORD - STL
ORDSTL
Chicago O'Hare Intl
Wed 10/1
7:20 am-9:06 am
1 stop25h 46m
Lambert-St Louis
Thu 10/2
4:00 pm-12:10 am
1 stop8h 10m
$168
ChicagoSt. Louis
ORD - STL
ORDSTL
Chicago O'Hare Intl
Tue 8/26
3:30 pm-10:02 pm
1 stop6h 32m
Lambert-St Louis
Sun 8/31
6:40 am-12:45 pm
1 stop6h 05m
$177
ChicagoMoline
ORD - MLI
ORDMLI
Chicago O'Hare Intl
Wed 8/27
9:50 am-10:51 am
Nonstop1h 01m
Moline Quad-City
Wed 9/3
6:00 am-7:09 am
Nonstop1h 09m
$178
ChicagoPeoria
ORD - PIA
ORDPIA
Chicago O'Hare Intl
Tue 9/9
8:58 am-10:08 am
Nonstop1h 10m
Greater Peoria
Tue 9/16
6:15 pm-7:34 pm
Nonstop1h 19m
$179
ChicagoSt. Louis
ORD - STL
ORDSTL
Chicago O'Hare Intl
Sun 8/31
2:20 pm-3:44 pm
Nonstop1h 24m
Lambert-St Louis
Sat 9/13
3:20 pm-4:45 pm
Nonstop1h 25m
$181
Showing 1-10 of 47 results
Best time to book a flight from O'Hare Intl to Illinois
Have a flexible travel schedule? Discover the best time to fly to Illinois from O'Hare Intl 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 Chicago O'Hare Intl Airport to Illinois
What is the cheapest month to book a flight from Chicago O'Hare Intl Airport to Illinois?
Currently, August is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Illinois (average of $245). Flying from Chicago O'Hare Intl Airport to Illinois 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 ORD to IL?
Find hourly flight availability from O'Hare Intl to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 29, 2025.
When flying from Chicago O'Hare Intl Airport to Illinois, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
Reviews of airlines servicing Illinois
Get insights into the airlines that provide service to Illinois. 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 Illinois. Reviews last updated July 29, 2025.
See what other customers who have flown with Southwest, Delta, and United Airlines from Chicago O'Hare Intl Airport to Illinois have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Overall
8.0
Entertainment
7.5
Comfort
8.0
Crew
8.6
Food
7.0
Reviews
1 / 20
8.0
ExcellentGina,Jul 2025
LAS - DEN
Boarding
8.1
Overall
8.0
Entertainment
7.5
Comfort
8.0
Crew
8.6
Food
7.0
Reviews
1 / 20
8.0
ExcellentGina,Jul 2025
LAS - DEN
Boarding
8.1
Overall
8.0
Entertainment
7.5
Comfort
8.0
Crew
8.6
Food
7.0
Reviews
1 / 20
8.0
ExcellentGina,Jul 2025
LAS - DEN
Boarding
8.1
Overall
8.0
Entertainment
7.5
Comfort
8.0
Crew
8.6
Food
7.0
Reviews
1 / 20
8.0
ExcellentGina,Jul 2025
LAS - DEN
Boarding
8.1
Overall
8.0
Entertainment
7.5
Comfort
8.0
Crew
8.6
Food
7.0
Reviews
1 / 20
8.0
ExcellentGina,Jul 2025
LAS - DEN
Related info for your journey
Find useful and relevant information for your journey from O'Hare Intl to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for O'Hare Intl to Illinois
See prices for flight routes from nearby airports that may be better suited for you.
Top 2 airlines flying from O'Hare Intl to Illinois
Discover the top 2 airlines that operate flights from O'Hare Intl to Illinois. 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 July 29, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$179 | Average$339 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$295 | Average$433 | FlexibilityNo cancel fee | On-time71% |