ORD

$36 Find Cheap Flights from Illinois to Chicago O'Hare Airport

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Chicago departing on 5/31. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Flight Deals

Cheap Flights from Illinois to Chicago

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Illinois to Chicago that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Illinois to Chicago

Mon, May 18 - Fri, May 22
Contour Logo
4:40 pm - 6:05 pm
BRL
-
ORD
1h 25mnonstop
Contour Logo
6:45 pm - 8:05 pm
ORD
-
BRL
1h 20mnonstop
$75Contour
Tue, May 5 - Sat, May 9
Contour Logo
9:10 am - 10:35 am
BRL
-
ORD
1h 25mnonstop
Contour Logo
12:00 pm - 1:20 pm
ORD
-
BRL
1h 20mnonstop
$77Contour
Wed, May 6 - Sun, May 10
United Airlines Logo
9:42 am - 10:55 am
DEC
-
ORD
1h 13mnonstop
United Airlines Logo
4:50 pm - 5:58 pm
ORD
-
DEC
1h 08mnonstop
$149United Airlines
Wed, May 6 - Sun, May 10
United Airlines Logo
9:42 am - 10:55 am
DEC
-
ORD
1h 13mnonstop
United Airlines Logo
4:50 pm - 5:58 pm
ORD
-
DEC
1h 08mnonstop
$159United Airlines
Fri, May 8 - Mon, May 11
Frontier Logo
4:19 pm - 11:13 pm
STL
-
ORD
6h 54m
1 stop
Frontier Logo
5:30 pm - 12:21 am
ORD
-
STL
6h 51m
1 stop
$180Frontier
Fri, May 15 - Mon, May 18
Frontier Logo
4:19 pm - 11:13 pm
STL
-
ORD
6h 54m
1 stop
Frontier Logo
5:30 pm - 12:21 am
ORD
-
STL
6h 51m
1 stop
$181Frontier
Wed, May 27 - Sat, May 30
Multiple Airlines Logo
5:27 pm - 7:41 pm
STL
-
ORD
26h 14m
1 stop
Multiple Airlines Logo
9:17 am - 7:31 pm
ORD
-
STL
10h 14m
1 stop
$209Multiple Airlines
Wed, May 20 - Wed, May 27
American Airlines Logo
11:16 am - 12:24 pm
BMI
-
ORD
1h 08mnonstop
American Airlines Logo
9:55 am - 11:03 am
ORD
-
BMI
1h 08mnonstop
$239American Airlines
Fri, Jun 12 - Mon, Jun 22
American Airlines Logo
6:00 am - 7:15 am
PIA
-
ORD
1h 15mnonstop
American Airlines Logo
10:51 pm - 11:56 pm
ORD
-
PIA
1h 05mnonstop
$239American Airlines
Wed, May 13 - Wed, May 20
Multiple Airlines Logo
7:31 pm - 11:13 pm
SPI
-
ORD
27h 42m
1 stop
Multiple Airlines Logo
10:49 am - 6:51 pm
ORD
-
SPI
8h 02m
1 stop
$265Multiple Airlines
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Good to know

Low seasonJanuary
Cheapest flight$36
Best time to beat the crowds with an average 2% drop in price.
Most popular time to fly with an average 1% increase in price.
Flight from Quincy to Chicago

FAQs for booking Illinois to Chicago O'Hare Airport flights

  • How does KAYAK find such low prices on flights from Illinois to Chicago O'Hare Airport?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Illinois to Chicago O'Hare Airport.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to Chicago O'Hare Airport?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Chicago O'Hare Airport from Illinois is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Illinois to Chicago O'Hare Airport?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Chicago O'Hare Airport with an airline and back to Illinois with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois to Chicago O'Hare Airport?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Chicago O'Hare Airport from Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 3 airlines serving from Illinois to Chicago

 
Need help choosing which airline to fly with from Illinois to Chicago? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.6
ContourOverall score based on 42 reviews
6.1Entertainment
7.3Comfort
7.9Crew
6.8Food
7.6Boarding
Airline reviews

Short flight so no entertainment and none expected or appropriate. Everyone I dealt with was professional and helpful. A good experience.

10.0 ExcellentAnonymous, Nov 2025
TSM - DEN
Read more Contour reviews

Short flight so no entertainment and none expected or appropriate. Everyone I dealt with was professional and helpful. A good experience.

Love it. No Frills but better than Spirit No Frills. It's like a simple luxury private plane especially if you've got five or six people on it because then you probably got your own section of the plane.

All the staff were amazing! The flight was quick, everything went smoothly, I have nothing but good things to say about this flight. Thank you Contour!

It was easy, efficient from start to finish. The flight attendant was amazing. Smooth ride. It was just perfect.

We had a great experience on both of our flights! Crew was great…..the ride was smooth…and checking in was easy. We will definitely fly with them again.

This was my first time flying with Contour and the Greenbrier Valley Airport. It both were excellent and the price couldn’t be beat!

Not on time. Taxied around the airport for 30 MINUTES! The pilot never said a word. Ai

Great flight, professional crew, convenient and interesting nonstop routes. Had trouble with getting precheck listed on boarding pass, but found that customer service was remarkably responsive via email — unheard of with other carriers. A great experience overalll.

I felt like a sardine in my seat. We all did. The plane was so small that I hit my head on the roof when I stood up from my seat. The service was good and the crew were nice.

My luggage is missing and contour is doing a terrible service helping finding it. Unbelievable and the worst experience ever. I would love get my money back.

boarded early to only find out that flight would sit at gate for 45 min to an hour. Landed in chicago and sat on runway for over an hour before got to gate. Total delay was extensive for a 45 min flight door to door.

The flight was significantly delayed. The inbound flight from EWR was delayed departing because of mechanical problems. My original departure from CLT was 5:28 pm but due to the delay of the inbound flight, after arrival, deplaning, cleaning, boarding, we did not push back from the gate until 9:00 pm. Once in the air, the flight was smooth and what was originally supposed to be an arrival in ORD at 7:30 pm local time turned out to be 9:35 pm.

The flight I was supposed to be on was supposed to take off at 1:50 from State College. It was delayed over and over and over again until somehow I had to rebook on a flight that was supposed to have left State College at 8 am that morning but didn't end up taking off until almost 6 pm. Not only was this completely unacceptable, the "token from United" was a 15 dollar meal voucher that has to be used by today. I would personally like some miles added to my account for this inconvenience. I was in transit for 8 hours from the time I arrive at State College Aiport to when I got home. I was supposed to be home at 3 pm and I returned at 8 pm. Unacceptable. I have not been on an on Time united flight in nearly 5 years.

newer aircraft, ability to connect my headset via blue tooth for entertainment.

Very comfortable flight, snacks and drinks were good, good communication from crew. Could have used a little more information on timing of boarding for group 5

Great flight. Got to watch a movie. Smooth flight and early arrival at ORD.

It was better than excellent. The staff in Mason City were great. The young woman that pushed my wheelchair did more than could be expected of her. She came from India 17 years ago. I don't remember her name.

After arriving in Chicago, we were taxiing for 1.5 hours with infrequent and untruthful updates about the amount of time it would take to arrive at the gate. Minimally, the team could have provided timing expectations that were more truthful, especially one their original expectations were not met.

Every staff member was professional, friendly and courteous. The pizza twist was ok. It was warm but too much dough.

I had a terrible experience. My flight got delayed from Atlanta to Chicago on Monday April 6, 2026, and that led to me missing my next flight to Brussels. United Airlines didn’t provide me with any accommodation for shelter. I had to sleep at the airport in Chicago. The next flight I was put on didn’t leave until the evening hours of Tuesday 4/7/2026.

It was good, the staff was great, and the food, was as usual, tea and biscuit. Bathroom was clean, and the plane was clean as well.

Very good I can’t complain one bit. Thank you American Airlines for making my flight enjoyable and safe!

The staff and service on American Airlines were truly outstanding. I had requested wheelchair assistance for my mother due to her knee issues, and the team went above and beyond every step of the way—from boarding in Boston to our arrival in Chicago. Their care, professionalism, and attentiveness made the entire experience smooth and stress-free. I’m very grateful for the support they provided.

The new planes (American Eagle) are beautiful and especially comfortable. The flight attendants are consistently professional and courteous. And, while it may seem inconsequential, the new liquid tube of coffee creamer—in contrast to the powdered coffee creamer—makes all the difference in a cup of coffee.

I'm not sure American is capable of on-time arrivals and departures. When you land at ORD, you almost always get held on the tarmac because your gate is still occupied. I may have missed my connection, but that ended up up being significantly delayed as well. Once again, I finally got home well after midnight.

Crew at the gate was very crabby and not at all polite. The plane was very hot the entire flight. And the seat cushion was very worn out.

The staff are very, very professional. It's what flying should feel like.

Flight was delayed half hour before boarding, but when I checked flight aware the plane that would Pick us up had a delay of more than an hour. AA should let us know in advance to avoid waiting several hours in the airport

Delays with no explanation. It could have been handled better.

Jill was the flight attendant in first class she was fabulous!! Best flight attendant I have had in years.!! And I fly every other week. Other can learn from her!!

Traveling to a place near Chicago?

Book flights to Chicago if you plan to visit one of these locations
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Hammond
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Delavan
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Elmhurst
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Everything you need to know for your flight to Chicago

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