$46+ Cheap flights from Illinois to O'Hare Intl (ORD)
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 11/4. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — ORD
ago. 4 — ago. 111
1 adult, Economy
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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 Illinois to O'Hare Intl
Keep the following information in mind while searching for Illinois to O'Hare Intl flight deals. Data was last updated julio 30, 2025.
Round-trip from | $91 (American Airlines) |
|---|---|
One-way from | $46 (United Airlines) |
Popular in | July |
Cheapest in | January |
Average price | $302 |
Good round-trip deal | $164 or less |
Good one-way deal | $79 or less |
Find flight deals from Illinois to O'Hare Intl
Cheapest flights from Illinois to O'Hare IntlExplore the most affordable flight options available from Illinois to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 30, 2025.
Explore the most affordable flight options available from Illinois to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 30, 2025.
This American Airlines deal was found by Cheapflights users on 7/30. 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. 9/137:23 amSTL - ORD
Nonstop1h 22mAmerican Airlines
sáb. 9/207:10 pmORD - STL
Nonstop1h 22mAmerican Airlines
Deal found 7/30![American Airlines logo]()
$91
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 9/129:40 amBRL - ORD
Nonstop1h 10mContour
lun. 9/155:35 pmORD - BRL
Nonstop1h 20mContour
Deal found 7/29![Contour logo]()
$103
This Southwest deal was found by Cheapflights users on 7/30. 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.
mié. 8/206:25 amSTL - ORD
1 stop6h 20mSouthwest
mar. 8/267:30 amORD - STL
1 stop7h 00mSouthwest
Deal found 7/30![Southwest logo]()
$141
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 8/136:55 pmDEC - ORD
Nonstop1h 08mUnited Airlines
dom. 8/177:45 amORD - DEC
Nonstop1h 03mUnited Airlines
Deal found 7/29![United Airlines logo]()
$149
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 8/265:30 pmSTL - ORD
Nonstop1h 25mUnited Airlines
mié. 8/272:20 pmORD - STL
Nonstop1h 24mUnited Airlines
Deal found 7/29![United Airlines logo]()
$149
This Jettzy 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 Jettzy is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 9/121:00 pmSTL - ORD
1 stop3h 19mSouthern / Mokulele
vie. 9/198:15 amORD - STL
1 stop3h 45mSouthern / Mokulele
Deal found 7/29![Southern / Mokulele logo]()
$166
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 9/131:26 pmSTL - ORD
1 stop5h 39mDelta
mar. 9/163:45 pmORD - STL
1 stop6h 15mDelta
Deal found 7/27![Delta logo]()
$177
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 8/92:52 pmSTL - ORD
1 stop8h 37mFrontier
mar. 8/1211:28 amORD - STL
1 stop12h 19mFrontier
Deal found 7/28![Frontier logo]()
$178
This American Airlines deal was found by Cheapflights users on 7/30. 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.
mié. 8/2710:07 amPIA - ORD
Nonstop1h 11mAmerican Airlines
mar. 9/98:58 amORD - PIA
Nonstop1h 10mAmerican Airlines
Deal found 7/30![American Airlines logo]()
$179
This American Airlines deal was found by Cheapflights users on 7/30. 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.
lun. 8/2511:21 amMLI - ORD
Nonstop1h 10mAmerican Airlines
mar. 10/219:55 amORD - MLI
Nonstop1h 04mAmerican Airlines
Deal found 7/30![American Airlines logo]()
$179
This KAYAK 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 9/57:50 amDBQ - ORD
Nonstop1h 05mDenver Air Connection
lun. 9/85:00 pmORD - DBQ
Nonstop0h 55mDenver Air Connection
Deal found 7/27![Denver Air Connection logo]()
$202
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 8/45:40 pmSTL - ORD
1 stop16h 34mMultiple Airlines
lun. 8/251:10 pmORD - STL
1 stop3h 35mMultiple Airlines
Deal found 7/27![Multiple Airlines logo]()
$202
Cheapflights Fare Finder
Customize your flight search to find flights from Illinois to O'Hare Intl 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 julio 30, 2025.
Use the filters below to find and compare flights from Illinois to Chicago O'Hare Intl Airport that are best for you.
Fly from
Illinois
Fly to
O'Hare Intl
Route
Depart
Return
Price
St. LouisChicago
STL - ORD
STLORD
Lambert-St Louis
sáb. 9/13
7:23 am-8:45 am
Nonstop1h 22m
Chicago O'Hare Intl
sáb. 9/20
7:10 pm-8:32 pm
Nonstop1h 22m
$91
BurlingtonChicago
BRL - ORD
BRLORD
Burlington
vie. 9/12
9:40 am-10:50 am
Nonstop1h 10m
Chicago O'Hare Intl
lun. 9/15
5:35 pm-6:55 pm
Nonstop1h 20m
$103
St. LouisChicago
STL - ORD
STLORD
Lambert-St Louis
mié. 8/20
6:25 am-12:45 pm
1 stop6h 20m
Chicago O'Hare Intl
mar. 8/26
7:30 am-2:30 pm
1 stop7h 00m
$141
DecaturChicago
DEC - ORD
DECORD
Decatur Arpt
mié. 8/13
9:45 am-10:55 am
Nonstop1h 10m
Chicago O'Hare Intl
mié. 8/20
7:50 am-8:56 am
Nonstop1h 06m
$149
St. LouisChicago
STL - ORD
STLORD
Lambert-St Louis
mar. 8/26
5:30 pm-6:55 pm
Nonstop1h 25m
Chicago O'Hare Intl
mié. 8/27
2:20 pm-3:44 pm
Nonstop1h 24m
$149
St. LouisChicago
STL - ORD
STLORD
Lambert-St Louis
vie. 9/12
1:00 pm-4:19 pm
1 stop3h 19m
Chicago O'Hare Intl
vie. 9/19
8:15 am-12:00 pm
1 stop3h 45m
$166
St. LouisChicago
STL - ORD
STLORD
Lambert-St Louis
sáb. 9/13
7:10 am-2:33 pm
1 stop7h 23m
Chicago O'Hare Intl
mar. 9/16
7:20 am-12:21 pm
1 stop5h 01m
$177
St. LouisChicago
STL - ORD
STLORD
Lambert-St Louis
sáb. 8/9
2:52 pm-11:29 pm
1 stop8h 37m
Chicago O'Hare Intl
mar. 8/12
11:28 am-11:47 pm
1 stop12h 19m
$178
PeoriaChicago
PIA - ORD
PIAORD
Greater Peoria
mié. 8/27
10:07 am-11:18 am
Nonstop1h 11m
Chicago O'Hare Intl
mar. 9/9
8:58 am-10:08 am
Nonstop1h 10m
$179
MolineChicago
MLI - ORD
MLIORD
Moline Quad-City
lun. 8/25
11:21 am-12:31 pm
Nonstop1h 10m
Chicago O'Hare Intl
mar. 10/21
9:55 am-10:59 am
Nonstop1h 04m
$179
Showing 1-10 of 43 results
Best time to book a flight from Illinois to O'Hare Intl
Have a flexible travel schedule? Discover the best time to fly to O'Hare Intl 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 O'Hare Intl Airport
What is the cheapest month to book a flight from Illinois to Chicago O'Hare Intl Airport?
Currently, August is the cheapest month in which you can book a flight from Illinois to Chicago O'Hare Intl Airport (average of $245). Flying from Illinois to Chicago O'Hare Intl Airport 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 ORD?
Find hourly flight availability from Illinois to O'Hare Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated julio 30, 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 O'Hare Intl Airport as you normally would.
Reviews of airlines servicing O'Hare Intl
Get insights into the airlines that provide service to O'Hare Intl. 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 O'Hare Intl. Reviews last updated julio 30, 2025.
Read through reviews of airlines operating flights from Illinois to Chicago O'Hare Intl Airport, such as Southwest, Delta, and United Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
8.0
Entertainment
7.5
Comfort
8.0
Crew
8.6
Boarding
8.1
Food
7.0
Reviews
1 / 20
8.0
ExcellentGina,Jul 2025
LAS - DEN
Overall
8.0
Entertainment
7.5
Comfort
8.0
Crew
8.6
Boarding
8.1
Food
7.0
Reviews
1 / 20
8.0
ExcellentGina,Jul 2025
LAS - DEN
Overall
8.0
Entertainment
7.5
Comfort
8.0
Crew
8.6
Boarding
8.1
Food
7.0
Reviews
1 / 20
8.0
ExcellentGina,Jul 2025
LAS - DEN
Overall
8.0
Entertainment
7.5
Comfort
8.0
Crew
8.6
Boarding
8.1
Food
7.0
Reviews
1 / 20
8.0
ExcellentGina,Jul 2025
LAS - DEN
Overall
8.0
Entertainment
7.5
Comfort
8.0
Crew
8.6
Boarding
8.1
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 Illinois to O'Hare Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Chicago O'Hare Intl Airport?
Book flights to Chicago O'Hare Intl Airport if you plan to visit one of these locationsSchaumburg
Rosemont
Beloit
Hoffman Estates
Skokie
Naperville
Des Plaines
Elgin
Arlington Heights
Elk Grove Village
Racine
Rockford
Tinley Park
Orland Park
Merrillville
Downers Grove
Evanston
Lake Geneva
Gurnee
Joliet
Browse thousands of different options on Cheapflights for your next trip
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Alternative routes for Illinois to O'Hare Intl
See prices for flight routes from nearby airports that may be better suited for you.
Top 2 airlines flying from Illinois to O'Hare Intl
Discover the top 2 airlines that operate flights from Illinois to O'Hare Intl. 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 julio 30, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$179 | Average$259 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$179 | Average$328 | FlexibilityNo cancel fee | On-time71% |