ORD

$47 Find Cheap Flights from Illinois to Chicago O'Hare Airport - Compare and Save

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 7/5. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Chicago O'Hare Intl Airport

Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 21% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flight Deals
Useful Info
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

Wed, Jul 8 - Sun, Jul 12
Contour Logo
3:45 pm - 5:10 pm
BRL
-
ORD
1h 25mnonstop
Contour Logo
12:15 pm - 1:35 pm
ORD
-
BRL
1h 20mnonstop
$98Contour
Mon, Jul 13 - Sun, Sep 20
Contour Logo
3:45 pm - 5:10 pm
BRL
-
ORD
1h 25mnonstop
Contour Logo
5:50 pm - 7:15 pm
ORD
-
BRL
1h 25mnonstop
$99Contour
Wed, Jul 8 - Tue, Jul 14
United Airlines Logo
9:37 am - 10:45 am
DEC
-
ORD
1h 08mnonstop
United Airlines Logo
4:45 pm - 5:56 pm
ORD
-
DEC
1h 11mnonstop
$149United Airlines
Fri, Oct 23 - Tue, Oct 27
United Airlines Logo
7:18 pm - 8:35 pm
DEC
-
ORD
1h 17mnonstop
United Airlines Logo
4:50 pm - 5:51 pm
ORD
-
DEC
1h 01mnonstop
$159United Airlines
Mon, Sep 14 - Thu, Sep 24
Delta Logo
1:55 pm - 8:30 pm
STL
-
ORD
6h 35m
1 stop
Delta Logo
1:55 pm - 8:35 pm
ORD
-
STL
6h 40m
1 stop
$215Delta
Sat, Jul 25 - Sat, Aug 1
Delta Logo
10:19 am - 4:23 pm
STL
-
ORD
6h 04m
1 stop
Delta Logo
11:10 am - 5:19 pm
ORD
-
STL
6h 09m
1 stop
$218Delta
Mon, Sep 14 - Wed, Sep 23
Frontier Logo
10:35 am - 7:44 pm
STL
-
ORD
9h 09m
1 stop
Frontier Logo
2:03 pm - 9:40 am
ORD
-
STL
19h 37m
1 stop
$220Frontier
Sat, Aug 8 - Mon, Aug 10
American Airlines Logo
5:00 am - 6:24 am
STL
-
ORD
1h 24mnonstop
American Airlines Logo
11:00 pm - 12:14 am
ORD
-
STL
1h 14mnonstop
$225American Airlines
Sun, Aug 23 - Tue, Aug 25
American Airlines Logo
4:54 pm - 6:33 pm
STL
-
ORD
1h 39mnonstop
American Airlines Logo
11:29 am - 12:54 pm
ORD
-
STL
1h 25mnonstop
$227American Airlines
Tue, Jul 21 - Tue, Jul 28
Frontier Logo
7:03 pm - 5:37 am
STL
-
ORD
10h 34m
1 stop
Frontier Logo
7:05 am - 5:37 pm
ORD
-
STL
10h 32m
1 stop
$230Frontier
Useful Info

Good to know

Low seasonJanuary
Cheapest flight$47
Best time to beat the crowds with an average 10% drop in price.
Most popular time to fly with an average 8% increase in price.
Flight from Burlington 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.
7.7
ContourOverall score based on 42 reviews
6.9Food
7.7Boarding
7.4Comfort
8.0Crew
6.2Entertainment
Airline reviews

I’ve flown Contour on 4 different flights in the last couple weeks and every one of the flights were significantly delayed. Like over 2 hours delayed. 3 of the 4 were due to maintenance and one was weather, which is beyond their control. If this continues, I will not fly them anymore. It makes me concerned that they don’t have great maintenance practices. The planes are very old and worn out and the interiors need improvement. I do like the amount of space you have between seats for legroom. They also started charging for bags recently, which I think the did when they partnered up with American Airlines as a codeshare partner. American is also a disaster of an airline so I wish they had some agreement with Delta. I am glad they offer a major airline parternership though. That is certainly giving people more opportunities. I won’t fly Contour unless they have a direct flight to where I am going. If I have to connect then I am going to take Delta. The bus at the DFW airport to get on and off the aircraft is a pain and adds so much extra time to your travel experience. I hope this is temporary while they are building a new terminal, but I don’t know.

6.0 GoodLane, Jun 2026
DFW - TUP
Read more Contour reviews

I’ve flown Contour on 4 different flights in the last couple weeks and every one of the flights were significantly delayed. Like over 2 hours delayed. 3 of the 4 were due to maintenance and one was weather, which is beyond their control. If this continues, I will not fly them anymore. It makes me concerned that they don’t have great maintenance practices. The planes are very old and worn out and the interiors need improvement. I do like the amount of space you have between seats for legroom. They also started charging for bags recently, which I think the did when they partnered up with American Airlines as a codeshare partner. American is also a disaster of an airline so I wish they had some agreement with Delta. I am glad they offer a major airline parternership though. That is certainly giving people more opportunities. I won’t fly Contour unless they have a direct flight to where I am going. If I have to connect then I am going to take Delta. The bus at the DFW airport to get on and off the aircraft is a pain and adds so much extra time to your travel experience. I hope this is temporary while they are building a new terminal, but I don’t know.

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!

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

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.

Flight was cancelled, but they got him on an earlier delayed rescheduled one. Arrived Chicago 2 hours later than expected but long layover so it worked.

It’s the only flight connecting Marion to Chicago, I do appreciate that it was available!

1 flight cancelled Had to fly out of different city Flight at new departure city was delayed 3 hours causing us to miss connecting flights. By the time we did make it to Prague our luggage did not. Had to wait day and a half for luggage to be delivered. Customer service was not good. Agents did not arrive at gate until 5-10 minutes before boarding

Awful. Delayed flights, missed connection to Toronto. Hotel vouchers were for already booked hotels x3. Giant waste of my time

Boarding was great, and the crew were very friendly. The seats must have been a bit on the older side and you could feel some of the seat components through the padding. Also, the plugs did not work on the row's entertainment screen or charging ports. Checked bag was transferred for connecting flight, and we appreciated how early we had the connecting gate information.

Very easy ! Use the kiosk and bag drop and right to security within 10 min

Over 5 hour delay with minimal updates or ability to standby for alternative flights. During boarding and 1 hr+ wait for takeoff, seats were drenched w water from air conditioning condensation and always leftover crumbs on carpet and seats

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.

Weather delay in Chicago?. No sense of urgency to make connection in Chicago for our connecting flight that wasn't delayed. Connection was missed.

It was fine, definitely older planes with no charging or anything. There’s no entertainment set up on board, but it is nice that they allow you to access the in flight entertainment from your phone without having to pay for the Wi-Fi and they do offer free texting.

The plane was in Moline all night. Consequently, we assumed an on time departure at 8:15am. Unfortunately, and as is the normal case with United in Moline, we departed 2.5 hours late. When the crew came, it was discovered that there was very little heat in the plane. Seems this should have been checked hours before the crew arrived. Then when we boarded and the plane was to be de-iced, the United de-icing truck was not working! We awaited the American Airlines truck. All of this caused us to miss our connection in Chicago. My suggestion is never take United Airlines flight from Moline. We have been disappointed 80% of the time and have vowed to not take United again from Moline.

The flight was delayed instead of leaving at 11 it left at 12.20

The flight de-boarded after being informed of a 3 hour delay. The gate agent said we could go to lounge. The flight ended up boarding 20 minutes later and I missed it.

We had a mechanical delay which made us 90 minutes late (9:30 PM) then land and put into the penalty box because a plane was in our gate? What the hell! We should get priority.Damn American.

The seats were extremely cramped, with very little legroom or personal space. There was no room left in the overhead bins for a backpack, and the space under the seat in front was so limited that I could barely fit my bag underneath. Overall, the seating arrangement felt very uncomfortable and overcrowded.

weather delay of almost 2 hours then we landed and our gate wasn't available so we waited another 30 min

Delayed flight more than I hour. When boarding we spent some additional time on the plane before takeoff ....

The flight was delayed significantly and we sat on runway after landing for awhile. Best thing was the flight attendant, Jenny, in first class, who was very professional and attentive. She was excellent - the rest of the flight was not.

The flight attendants were extremely sourly and borderline rude. I did not feel appreciated as an AA customer once.

The flight from LA to Chicago was smooth and service was very good overall.

The Mario was so helpful and provided amazing customer service however l have being waiting for a callback for almost a week now and have not heard anything further after l informed them l wanted to change my date of traveling because of my hospital appointment even send them proof and l was unable to use manag your booking on their website is a bit frustrating and l would appreciate an update on My request as soon as possible. And have called them times without numbers no response

This flight is frequently delayed. The connections seemingly are more frequently delayed. I’ve missed connections as a result twice on the same route to charlotte then Charleston. Final destination arrival has been the next day, twice in a row. No pilots, no crew. Too many excuses. Unfortunately, my days with American are over.

Traveling to a place near Chicago?

Book flights to Chicago if you plan to visit one of these locations
Gurnee
South Haven
Merrillville
Oak Brook
Saint Joseph
Tinley Park
Hammond
Elk Grove Village
Des Plaines
Hoffman Estates
Portage
South Holland
Willowbrook
Delavan
Lansing
Northbrook
Lisle
Elmhurst
Alsip
Pleasant Prairie

Everything you need to know for your flight to Chicago

Information on your arrival and departure airports