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Find cheap flights from Chicago to Illinois from $50

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Chicago to Illinois departing on 6/22. 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
0 bags
Mon 7/1
Mon 7/8

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Best Illinois Flight Deals

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours

Peoria
Peorianonstop$219
Bloomington
Bloomingtonnonstop$409
St. Louis
St. Louisnonstop$99

Good to know

Low season

June

High season

September

Cheapest flight

$50
Best time to beat the crowds with an average 26% drop in price.
Most popular time to fly with an average 10% increase in price.
Flight from Chicago O'Hare Airport to St. Louis

FAQs - booking Illinois flights

  • How does KAYAK find such low prices on flights from Chicago to Illinois?

    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 Chicago to Illinois.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Illinois from Chicago 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 Chicago to Illinois?

    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 Illinois with an airline and back to Chicago with another airline.

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

    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 Illinois from Chicago up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding cheap flights to Illinois

  • Morning departure is around 17% cheaper than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

Top 5 airlines serving from Chicago to Illinois

 
Need help choosing which airline to fly with from Chicago to Illinois? 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.
8.3
EVA AirOverall score based on 1495 reviews
8.4Boarding
8.6Crew
8.0Entertainment
8.2Comfort
8.0Food
Airline reviews

Their announcement was not quite clear in Chinese. The rest is pretty good.

8.0 ExcellentYue, May 2024IAH - TPE
Read more about EVA Air reviews

Their announcement was not quite clear in Chinese. The rest is pretty good.

The hygiene of the bathrooms were terrible. Urine smells leaked out into the cabin and the seats were really tight, even for a petite woman like myself. Flight attendants did not go through the cabin enough to offer refreshments.

I was expecting that movie selection and food would have been better. Everything else was great.

The type of the food requested (Asian vegetarian) was not properly met with. They have very limited snack items that may compensate for the main meals.

The quality of the food is pretty good. Thank you, EVA Air.

Fast and efficient boarding. Flight was on time. Service was very good for our long flight. First time flying with this airline and I would highly recommend.

Pleasant crew. Very long flight, a bit uncomfortable at times being seated, but not too bad.

No ice for the drinks. Only gave a half a cup of your beverage. Not enough water. I got very dehydrated.

Eva air is a good airline. The seats on the way to Taipei could have certainly been more comfortable, but all in all it was a pretty good experience.

Eva is one of the top airlines in Asia... but often are over priced. Finally found a reasonable rate.

Flighty delayed on boarding - then group 1 had to check their carry on bags but groups 3 and beyond could carry bags on - very inconvenient for weekend business trip with no checked baggage. Then delayed on the runway - before take off. No communication from pilot on why or how long. Wifi/Entertainment didn't work for 4+ flight. Upon arrival, attendants announced wrong carousel for baggage claim - everyone was waiting at the wrong place for their checked bags. This was a mess united!

There was no screens on board AND the WiFi didn’t work. My seat was broken and couldn’t recline so I couldn’t even sleep. The flight attendants didn’t offer anything to make it more comfortable. It was such an old cramped plane, when the person in front of me reclined I couldn’t even open my tray table. All the United ads talk about guaranteeing everyone gets a screen!

I’ve had a couple flights this week on United that were delayed by an hour or more

Great! The plane was decently sized and comfortable. The staff was nice and there was great in flight entertainment

Last minute gate change nearly caused us to miss our flight. Change was not announced or displayed in the main board at the old gate. Terrible communication. When we landed we had to wait 20 minutes because there was another plane at the assigned gate. Not the crew’s fault, but adding 20 minutes to a 45 minute flight sucked.

delay several times and wait extra long to board. no entertainment service because there are problem for some rows. always encounter some delays for the last flight of the day.

The flight experience was very good! Especially the United Club!

I was not able to buy food in the flight. They refer to include your Credit card in the APP, and if you are not from USA (i have a credit card form Canada) it is not possible

The flight from Ottawa to Chicago took a lot longer due to DC in Ottawa. We got to Chicago and went to our gate to catch our flight. We only had nine minutes I found that very stressful.

Good boarding. Crew started quick with drinks and food. They came around several times for trash which I really liked. Other than turbulence due to storms in the area, flight was great.

My husband and I pre-ordered our food, but they did not have my husband’s order, and my cheese plate was very average. I asked for a blanket and was told they don’t carry blankets on domestic routs. The flight was on time and smooth!

Good flights. Departure and arrivals were on time. DFW was a little problematic in that the Skytrain without prior notice bypassed the Echo terminal so that delayed my arrival at my connecting flight.

Because I can’t stand very long in one place, I was allowed to reword.

5 hour flight - full flight - not enough room to use my computer - slightly delayed - Admirals club was excellent quality food, drink made up for flight seating. No food offerred on flight, you ahd to prebook.

Excellent- plan was barely populated. I cannot remember a flight where I was able/encouraged to stretch out!

Great flight. Boarding was efficient and quick. On time departure and smooth flight. Flight arrived early at destination. Good experience.

Had technical issue which delayed the flight period. Flight crew knew there was 5 passengers that the connecting flight was within 15 minutes once at the gate. Rather than identify the 5 passengers to assure they got first. The flight attended mentioned it but didn't assist to assure passengers with connecting flights off first. This caused a hardship and our party of 3 missed the connecting flight.

I don't like that I have to pay if I want extra leg room. The seats are so expensive; I sit in normal seats and my legs and knees cramp the entire flight. I never feel comfortable on AA flights.

Flight was delayed at departure due to weather and the need for de-icing. The flight was smooth but there was a delay at arrival due to weather. We were in a hold for 20 minutes or more. The flight arrived more than 30 minutes late. Airlines have no control over the weather and I'm glad that they follow all safety procedures. Had to wait a long time for my checked luggage. Whole process was slow and the bags arrived wet due to the rain. The onboard wifi and entertainment access was spotty and the signal was dropped several times. Otherwise the crew was great and friendly. They tried to get everyone's bags stowed and seated so we could take off.

Regarding the boarding: it needs more efforts to make it more convenient

The plane was not on time for boarding or departure or arrivals.

Flight expected to leave at 6:40 pm ended leaving at 8:00 am the following day. I slept in a cold airport. Never again Spirit for me…

This was the return leg of my journey with Spirit Airlines. Despite its reputation, I found no issues as it got me from point A to B safely and without delay, especially with no mechanical delays, which is fantastic in my book! The staff, from ground crew to cabin crew, were all pleasant and hassle-free. The flight was smooth from takeoff to landing. I have absolutely no complaints about this no-frills airline!

It was the worst ever, i will be filing a lawsuit to get a refund. Our flight was delayed 4 hours so we would miss our connecting flight, we were not rebooked to our destination the same day, we were not offered any options to get home on the same day despite being clear that we absolutely cannot get stranded at night due to family, we were forced to book our own flights on a different airline to get home, and spririt is refusing a refund because our flight wasn't cancelled, only delayed. oh yeah, and they lost our luggage on the first part of the trip and you cannot get a hold of customer service when anything goes wrong, on hold for 30+ minutes. and their app breaks so you can't use that either.

My flight was cancelled!!! I had to spend 200.00 on another flight!!

Crew was nice, explained emergency protocol very well. Flight took off and arrived on time. Pilot explained the small delay that occurred with docking and providing updates. I would definitely fly spirit again.

The seat are terrible. Don’t even think of sleeping on a Spirit flight. The kids that run the plane aka flight attendants are pretty rude and straight forward. They get the job done but without class.

I had a death in my family and booked my flight on Spirit. My flight was cancelled the morning of my flight, no explanation, no help to rebook, nobody to talk to. The next available flight was 2days later !!!! Terrible airline, will NEVER fly with them again!

They took a horrible route with a lot of turbulence and I eneded up getting sick. Even if the flight takes longer. Don't put people life at risk just to get to the airport on time.

Every thing was fine ,low price,easy on time ,clean, good staff, really no issues

Flight was delay 9hrs and nothing was provided at airport, had to go and get a room to sleep in, paid for Uber back and fort with no offers until we landed back home a 1hr later for a $75 voucher for a future flight.

Didn't like anything..entire crew was very rude to everyone on the flight. Plane old and the trays fall down on you the while time you're flying. Charged more for a carry on bag than for the plane ticket itself. Did make it from point a to point b, but worth the extra money to fly with another airline

9 hours of delay!! Was not able to check my luggage that I paid for!!!

It was delayed 9 hours for operational reasons, despite the plane arriving to the airport on time.

I am very disappointed with Frontier Airlines. They cancelled our flight because they couldn't find a crew member, and then didn't get us to our connecting flight. We had to cancel our whole vacation. We were promised flight and hotel vouchers, but they never sent them.

9hrs delay and didn’t provided anything until after flight landed $75 voucher for fiuture travel no meals or anything.

It was ridiculously hard to check in for the flight, and Frontier charged us a LOT of money to have a carry on suitcase, and then told everyone we could not carry on bags and had to check them through at the gate, and didn't refund the extra money we paid to have the suitcase as carry on.

I had a terrible experience with Frontier. I arrived before the 60 minute cut off and was told that Frontier has a two hour window for bags. I was then told the next available flight wasn’t until the end of the day (I had booked a 6am flight). I took a look around and saw other people being told that they could not board their flights or that they had to pay additional fees. I opted to rebook on American Airlines. There’s absolutely no straightforward way to contact Frontier, so this ticket was a complete waste of money. Oh - and the kicker is that the lady lied about the two hour cut off.

Frontier won’t help you at the airport without paying $25. Carry on was $75. Then you get on the plain and every beverage or snack is also a charge. Seats are hard and real packed in. I would never fly them again.

Worst experience I have seen. The flight was cancelled without any reason.

Book cheap flights from Chicago to Illinois

Recent round-trip flight deals

6/22Sat
nonstopAmerican Airlines
1h 17mORD-STL
6/24Mon
nonstopAmerican Airlines
1h 22mSTL-ORD
$99
6/26Wed
nonstopAmerican Airlines
1h 13mORD-STL
6/28Fri
nonstopAmerican Airlines
1h 22mSTL-ORD
$108
6/26Wed
nonstopUnited Airlines
1h 21mORD-STL
6/28Fri
nonstopUnited Airlines
1h 25mSTL-ORD
$157
6/29Sat
nonstopUnited Airlines
1h 01mORD-DEC
7/5Fri
nonstopUnited Airlines
1h 05mDEC-ORD
$158
6/29Sat
1 stopDelta
3h 32mMDW-STL
7/6Sat
1 stopDelta
5h 40mSTL-MDW
$226
8/12Mon
1 stopFrontier
6h 19mMDW-STL
8/17Sat
1 stopFrontier
11h 01mSTL-MDW
$250
11/9Sat
2 stopsDelta
10h 56mORD-STL
11/10Sun
1 stopDelta
5h 51mSTL-ORD
$251
8/20Tue
1 stopFrontier
12h 18mMDW-STL
9/3Tue
1 stopFrontier
11h 04mSTL-MDW
$254
6/14Fri
2 stopsSpirit Airlines
27h 29mORD-STL
6/16Sun
2 stopsSpirit Airlines
17h 28mSTL-ORD
$284
8/12Mon
3 stopsSpirit Airlines
33h 08mORD-STL
8/17Sat
1 stopSpirit Airlines
16h 24mSTL-ORD
$292

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Recent one-way flight deals

6/22Sat
nonstopAmerican Airlines
1h 17mORD-STL
$50
7/19Fri
nonstopSouthern / Mokulele
1h 40mORD-BRL
$57
9/25Wed
1 stopDelta
4h 45mMDW-STL
$78
7/30Tue
1 stopDelta
6h 17mORD-STL
$78
8/27Tue
3 stopsSpirit Airlines
24h 49mORD-STL
$89
6/26Wed
2 stopsSpirit Airlines
23h 12mORD-STL
$90
8/13Tue
nonstopUnited Airlines
1h 01mORD-DEC
$93
8/1Thu
nonstopUnited Airlines
1h 20mORD-STL
$115
6/26Wed
1 stopFrontier
7h 17mMDW-STL
$129
7/3Wed
1 stopFrontier
6h 58mMDW-STL
$133

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Last minute flights from Chicago to Illinois

Last minute flight, train and bus deals

6/3Mon
multi-stopSouthern / Mokulele
11h 30mORD-STL
6/4Tue
multi-stopSouthern / Mokulele
3h 35mSTL-ORD
$119
6/4Tue
multi-stopSouthern / Mokulele
14h 05mORD-STL
6/6Thu
multi-stopSouthern / Mokulele
4h 10mSTL-ORD
$122
6/2Sun
multi-stopSouthern / Mokulele
15h 25mORD-STL
6/3Mon
multi-stopSouthern / Mokulele
14h 40mSTL-ORD
$123
6/3Mon
nonstopUnited Airlines
1h 01mORD-DEC
7/3Wed
nonstopUnited Airlines
1h 05mDEC-ORD
$173
6/6Thu
nonstopAmerican Airlines
1h 17mORD-STL
6/9Sun
nonstopAmerican Airlines
1h 22mSTL-ORD
$423
6/5Wed
nonstopAmerican Airlines
1h 27mORD-STL
6/5Wed
nonstopAmerican Airlines
1h 24mSTL-ORD
$437
6/6Thu
nonstopUnited Airlines
1h 21mORD-STL
6/7Fri
nonstopUnited Airlines
1h 24mSTL-ORD
$467
6/6Thu
multi-stopSpirit Airlines
12h 08mORD-STL
6/9Sun
multi-stopSpirit Airlines
18h 45mSTL-ORD
$512
6/6Thu
multi-stopSpirit Airlines
12h 08mORD-STL
6/6Thu
multi-stopSpirit Airlines
22h 00mSTL-ORD
$637
6/2Sun
multi-stopFrontier
10h 47mMDW-STL
6/5Wed
multi-stopFrontier
10h 00mSTL-MDW
$1,158

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Flights to Illinois

Return flight deals:

Illinois - Chicago

Cabin classes:

$578
$1,220
$131