Find cheap United Airlines flights to Illinois
ICT — ORD
Oct 5 — Oct 121
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Leverage Cheapflights for Your Next Trip
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
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Find United Airlines flight deals to Illinois
Cheapest
Best
Direct
Last-minute
One-way
Cheapest United Airlines flights from USA to IllinoisExplore the most affordable United Airlines flight options available from USA to Illinois. Find the lowest fares with prices last updated on September 5, 2026.
Explore the most affordable United Airlines flight options available from USA to Illinois. Find the lowest fares with prices last updated on September 5, 2026.
This deal was found by Cheapflights users on 8/31. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/316:10 am -
Nonstop2h 19m
Sat 10/3111:00 am -
Nonstop2h 06m
Deal found 8/31![United Airlines logo]()
$206
This deal was found by Cheapflights users on 8/31. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/197:46 am -
Nonstop2h 14m
Sat 10/246:00 am -
1 stop4h 59m
Deal found 8/31![United Airlines logo]()
$215
This United Airlines deal was found by Cheapflights users on 9/1. 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.
Thu 10/14:45 pm -
Nonstop4h 10m
Thu 10/86:00 am -
Nonstop4h 27m
Deal found 9/1![United Airlines logo]()
$217
Best United Airlines flights from USA to IllinoisDiscover carefully curated United Airlines flight deals from USA to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 5, 2026.
Discover carefully curated United Airlines flight deals from USA to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 5, 2026.
This United Airlines deal was found by Cheapflights users on 9/3. 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 10/233:20 pm -
Nonstop4h 11m
Mon 10/261:00 pm -
Nonstop4h 29m
Deal found 9/3![United Airlines logo]()
$217
This United Airlines deal was found by Cheapflights users on 9/2. 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 11/1312:40 pm -
Nonstop4h 16m
Sun 11/158:45 am -
Nonstop4h 44m
Deal found 9/2![United Airlines logo]()
$217
This United Airlines deal was found by Cheapflights users on 9/1. 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 11/1411:17 pm -
Nonstop4h 03m
Mon 11/165:52 pm -
Nonstop4h 37m
Deal found 9/1![United Airlines logo]()
$217
Direct United Airlines flights from USA to IllinoisExplore non-stop United Airlines flight options from USA to Illinois based on user searches, and compare prices and availability for your desired travel dates. Data last updated September 5, 2026.
Explore non-stop United Airlines flight options from USA to Illinois based on user searches, and compare prices and availability for your desired travel dates. Data last updated September 5, 2026.
This deal was found by Cheapflights users on 8/31. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/316:10 am -
Nonstop2h 19m
Sat 10/3111:00 am -
Nonstop2h 06m
Deal found 8/31![United Airlines logo]()
$206
This United Airlines deal was found by Cheapflights users on 9/1. 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.
Thu 10/14:45 pm -
Nonstop4h 10m
Thu 10/86:00 am -
Nonstop4h 27m
Deal found 9/1![United Airlines logo]()
$217
This deal was found by Cheapflights users on 9/4. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/166:05 am -
Nonstop2h 21m
Fri 9/187:30 am -
Nonstop2h 00m
Deal found 9/4![United Airlines logo]()
$217
Last-minute United Airlines flights from USA to IllinoisDiscover last-minute United Airlines flight deals from USA to Illinois. Data last updated September 5, 2026 and is based on user searches.
Discover last-minute United Airlines flight deals from USA to Illinois. Data last updated September 5, 2026 and is based on user searches.
This deal was found by Cheapflights users on 8/31. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/316:10 am -
Nonstop2h 19m
Sat 10/3111:00 am -
Nonstop2h 06m
Deal found 8/31![United Airlines logo]()
$206
This deal was found by Cheapflights users on 8/31. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/197:46 am -
Nonstop2h 14m
Sat 10/246:00 am -
1 stop4h 59m
Deal found 8/31![United Airlines logo]()
$215
This United Airlines deal was found by Cheapflights users on 9/1. 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.
Thu 10/14:45 pm -
Nonstop4h 10m
Thu 10/86:00 am -
Nonstop4h 27m
Deal found 9/1![United Airlines logo]()
$217
One-way United Airlines flights to IllinoisSearch for one-way United Airlines flight options to Illinois. Find affordable one-way fares based on user searches. Data last updated September 5, 2026.
Search for one-way United Airlines flight options to Illinois. Find affordable one-way fares based on user searches. Data last updated September 5, 2026.
This United Airlines deal was found by Cheapflights users on 9/2. 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 10/411:05 pm -
Nonstop4h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![United Airlines logo]()
$109
This United Airlines deal was found by Cheapflights users on 9/3. 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 10/57:01 am -
Nonstop2h 59m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![United Airlines logo]()
$109
This United Airlines deal was found by Cheapflights users on 9/3. 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 12/155:00 pm -
1 stop5h 47m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![United Airlines logo]()
$114
Flights to Illinois with United Airlines at a glance
Find detailed information about United Airlines flights from USA to Illinois. Explore the options provided by United Airlines to plan your journey from USA to Illinois. Data last updated September 5, 2026.
Popular in | July |
|---|---|
Cheapest in | January |
Average price | $348 |
Round-trip from | $206 |
One-way from | $109 |
Good round-trip deal | $297 or less |
Good one-way deal | $163 or less |
Cheapflights Insights
Find cheap United Airlines flights to Illinois
US0-USIL
BWI-ORD
DCA-ORD
LAX-ORD
BOS-ORD
How long is the flight to Illinois with United Airlines?
On average, United Airlines flights from the United States to Illinois take 2 hours 18 minutes. Flights to Illinois from other popular cities in the United States will vary in length. Below are a few examples of popular routes and their flight times.
United Airlines weekly flight availability to Illinois
The most flights to Illinois operated by United Airlines are scheduled on a Sunday (908 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (628 on average).
When is the best time to book a flight to Illinois with United Airlines?
The best time to book a flight to Illinois with United Airlines is 29 days before departure. On average, fares are higher if you book on the same day as departure.
FAQs for United Airlines flights to Illinois
Reviews from United Airlines flights to Illinois
See what other users thought of their United Airlines experience.
Overview
Reviews
United Airlines
10,000 reviews
Overview
Comfort
7.3
Food
6.6
Boarding
7.7
Crew
8.1
Entertainment
7.1
Recent reviews
10.0
|Aug 2026Staff friendly, good boarding experience
4.0
|Aug 2026Had to go through TSA again, already purchased bottle drink. TSA would not let through, United changed gates last minute. This experience bad for everyone. Staff rude, not our fault. Staff from Chicago to Wichita excellent!
2.0
|Aug 2026I missed my connecting flight because our plane took off ten minutes late and then when we got to the airport another plane was in our shoot waiting to get fueled up and that took 30 minutes so I missed my connecting flight. I asked if I could get off and they assured me the plane would most likely wait for me since they know what time the planes get in because of an app. I was not happy. I had to wait till 7:25 to board the next flight and then that was delayed. Gates changed till 9:20. Terrible
6.0
|Jul 2026The crew aboard the plane were not very friendly. They definitely acted like it was a chore to be there.
6.0
|Jul 2026Customer service was not very friendly on the plane.
1 out of 3334
Popular United Airlines flights
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Complete your trip
Flights by cabin class
Popular destinations
Popular flights
Popular flights to Illinois cities
Popular routes
Popular routes from Illinois
Popular United States flight routes
Top Illinois destinations
United Airlines
United States flights