$60 Find Cheap Flights to Illinois

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from the United States to Illinois departing on 9/24. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Illinois

 
These are the airlines KAYAK users have selected most often from within our search results for flights to Illinois
These are the airlines KAYAK users have selected most often from within our search results for flights to Illinois
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Cheap Flights to Illinois

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Chicago
Chicagononstop$105
Moline
Molinenonstop$219
Peoria
Peoria1 stop$193
Bloomington
Bloomington1 stop$230
Champaign
Champaign1 stop$308
Springfield
Springfieldnonstop$329
St. Louis
St. Louisnonstop$95
Marion
Marion1 stop$250
Paducah
Paducah1 stop$279
Chicago
Chicagononstop$105
Moline
Molinenonstop$219
Peoria
Peoria1 stop$193
Bloomington
Bloomington1 stop$230
Champaign
Champaign1 stop$308
Springfield
Springfieldnonstop$329
St. Louis
St. Louisnonstop$95
Marion
Marion1 stop$250
Paducah
Paducah1 stop$279

Book Cheap Illinois Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights to Illinois 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 to Illinois

Fri, Oct 3 - Sat, Oct 4
Frontier Logo
10:41 am - 1:11 pmDFW-MDW
2h 30mnonstop
Frontier Logo
11:23 am - 1:59 pmMDW-DFW
2h 36mnonstop
$105Frontier
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Tue, Oct 28 - Tue, Nov 4
Frontier Logo
10:24 pm - 12:59 amDFW-ORD
2h 35mnonstop
Frontier Logo
12:37 pm - 8:51 pmORD-DFW
8h 14m1 stop
$106Frontier
Find Deal
Fri, Oct 31 - Sun, Nov 2
Spirit Airlines Logo
12:15 pm - 2:41 pmDFW-ORD
2h 26mnonstop
Spirit Airlines Logo
1:01 pm - 3:39 pmORD-DFW
2h 38mnonstop
$108Spirit Airlines
Find Deal
Wed, Oct 1 - Sun, Oct 5
Spirit Airlines Logo
10:36 pm - 11:59 amDFW-ORD
13h 23m1 stop
Spirit Airlines Logo
12:28 pm - 2:59 pmORD-DFW
2h 31mnonstop
$124Spirit Airlines
Find Deal
Fri, Sep 5 - Sun, Sep 7
United Airlines Logo
4:27 pm - 6:21 pmBOS-ORD
2h 54mnonstop
United Airlines Logo
9:37 pm - 1:09 amORD-BOS
2h 32mnonstop
$137United Airlines
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Mon, Sep 22 - Fri, Sep 26
United Airlines Logo
7:28 am - 9:05 amLGA-ORD
2h 37mnonstop
United Airlines Logo
8:00 pm - 11:24 pmORD-LGA
2h 24mnonstop
$149United Airlines
Find Deal
Wed, Sep 17 - Wed, Sep 17
American Airlines Logo
11:00 am - 12:41 pmJFK-ORD
2h 41mnonstop
American Airlines Logo
1:59 pm - 5:17 pmORD-JFK
2h 18mnonstop
$152American Airlines
Find Deal
Sat, Oct 4 - Wed, Oct 8
American Airlines Logo
11:00 am - 12:41 pmJFK-ORD
2h 41mnonstop
American Airlines Logo
1:43 pm - 5:05 pmORD-JFK
2h 22mnonstop
$161American Airlines
Find Deal
Fri, Sep 12 - Mon, Sep 15
Southwest Logo
5:00 am - 4:25 pmBOS-ORD
12h 25m1 stop
Southwest Logo
1:50 pm - 10:15 pmORD-BOS
7h 25m1 stop
$162Southwest
Find Deal
Thu, Oct 9 - Sun, Oct 12
Southwest Logo
7:40 am - 3:20 pmLGA-ORD
8h 40m1 stop
Southwest Logo
7:30 am - 9:45 pmORD-LGA
13h 15m1 stop
$164Southwest
Find Deal
Booking Insights

KAYAK's insights & trends for flights to Illinois

Get data-powered insights and trends for flights to Illinois to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest flight to Illinois?

These are the best round-trip prices found by users searching on KAYAK in the last 72 hours.

The cheapest ticket to Illinois from the United States found in the last 72 hours was to Chicago Midway Airport, at $39 round-trip. The most popular route is Atlanta (ATL) to Chicago Midway Airport (MDW) and the cheapest round-trip airline ticket found on this route in the last 72 hours was $39.

How much is a flight to Illinois?

The average and cheapest price for all round-trip flights to Illinois from each origin found by users searching on KAYAK in the last month.

A flight to Illinois costs $332 on average. The cheapest price found on KAYAK in the last 2 weeks was $38 for the route Pittsburgh (PIT) to Chicago Midway Airport (MDW). The most popular routes on KAYAK are Dallas to Bloomington which costs $399 on average, and Boston to Chicago, which costs $336 on average.

See prices from:

What is the cheapest month to fly from the United States to Illinois?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from the United States to Illinois, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from the United States to Illinois is January, when tickets cost $271 (return) on average. On the other hand, the most expensive months are December and July, when the average cost of round-trip tickets is $538 and $485 respectively.

How far in advance should I book a flight from the United States to Illinois?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights to Illinois, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from the United States to Illinois, you should book around 3 weeks before departure, which saves you about 38% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 7 weeks before departure.

Which is the cheapest airport to fly into in Illinois?

Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in Illinois is Springfield Capital Airport (SPI), with an average flight price of $109.

Good to know

Low seasonJanuary
Cheapest flight$60
Best time to beat the crowds with an average 9% drop in price.
Most popular time to fly and prices are also 7% lower on average.
Flight from Dallas/Fort Worth Airport to Chicago O'Hare Airport

Flights to Illinois: the best tips from KAYAK users' own experiences

Insights shared by verified travelers who flew to Illinois 
DouglasFlew with American AirlinesHSV-ORDJun 2025
Check your app for delay notices. This notice did come out early in the morning - I failed to check it. Checking it could have saved 4 hours at the airport
Verified travelerFlew with British AirwaysDSM-ORDJun 2025
Make sure your luggage receipts have the ID numbers on them
StaceyFlew with American AirlinesPHX-ORDFeb 2025
Don’t be that person who holds up the plane because of your carry on. Whether putting in over bin (able to lift it on your own) or refusing to not listen when space is full and need to check it.
StephenFlew with United AirlinesEWR-ORDJan 2025
Don't bring a carry on roller bag. It won't fit. They will gate check it. It will take forever.
RodFlew with United AirlinesSAN-ORDSep 2024
Yes! Don’t reserve a flight with less than 1 1/2 hour connection time or you have a good possibility of missing your connection.
GeraldFlew with Alaska AirlinesSFO-ORDOct 2024
Book a flight as early in the day as possible to avoid incoming flight delays.
AdamFlew with SouthwestDEN-ORDOct 2024
Arriving T5 at ORD on Southwest is often a LONG walk, with no moving walkways going out, to baggage claim / pickup.
DinaFlew with United AirlinesHSV-ORDNov 2024
Be prepared for delays and plan to check your luggage. Overhead bins are ⅓ the size of a typical bin.
KimFlew with American AirlinesSNA-ORDNov 2024
Bring extra foods and buy extra drinks bring your meds
LeoFlew with United AirlinesCLT-ORDJun 2024
Get precheck TSA if you’re flying in early morning. Get a seat on the right side of the plane if you want to see sunrise.
Verified travelerFlew with American AirlinesPHL-ORDJul 2024
Fly out the night before you have anything to do in Chicago so you don’t get delayed and miss out on plans
CameonFlew with FrontierSLC-ORDJul 2024
Fly Delta! Book directly through the airline, not a second booking party.
GailFlew with JetBlueBOS-ORDJul 2024
Prepare for a long wait after you actually touch down. Ohare Airport is HUGE and you can taxi for a long time.
MichelleFlew with United AirlinesMBS-ORDApr 2024
Bring water on board and charge your devices in advance.
Verified travelerFlew with SouthwestLAS-ORDMay 2024
Leave plenty of time to get your bag in Chicago if you check one. Took 45 minutes to get my bag this time.
Verified travelerFlew with Alaska AirlinesSDF-ORDApr 2024
If flight gets delayed. Be sure to ask the airlines you traveled with, to rebook the next available flight immediately.
KariFlew with British AirwaysLSE-ORDMay 2024
Ask for assistance. Chicago is huge airport 🛫 and can get lost easy.
CindyFlew with SouthwestTPA-MDWMar 2024
Don’t check a bag. Chicago takes forever to get your baggage.
yvgeniFlew with United AirlinesEWR-ORDJan 2024
Check the weather before flying , and don’t rely on getting on time to your destination

FAQs - booking Illinois flights

  • What’s the best airport to fly into Chicago?

    The O’Hare International Airport and the Midway International Airport are the two major airports serving Chicago. The first one is 17 mi from the city center and has more flights and amenities. But, if you prefer a less busy airport, consider searching for flights that land at Midway International instead. Being less crowded is not the only advantage of this airport—it’s also closer to downtown Chicago (10 mi). Both airports are served by the famous "L" train. To travel from O’Hare to the city center, take CTA Blue Line, and from Midway, take the CTA Orange Line.

  • Where do I fly into if I’m visiting Springfield?

    Abraham Lincoln Capital Airport (SPI) is the airport serving Springfield, less than 10 mi from the city center. Keep in mind that this airport is served by only three airlines. Those airlines are Allegiant Air, flying from Punta Gorda in Florida; American Eagle, flying from Dallas-Fort Worth; and United Express, flying from Chicago O’Hare.

  • I’m going to Six Flags Great America. Which airport do I fly into?

    If you’re looking for flights to Illinois to visit the Six Flags Great America amusement park, choose Chicago as your final destination. O’Hare International Airport is 32 mi from the park and Midway International is 60 mi from the park. In addition to being the most convenient because of its proximity to the park, O’Hare International is also the airport with the most flight options.

  • Which airport is best if I’m going to Carbondale, Illinois?

    The airport in Illinois with commercial flights that’s closest to Carbondale is Midway International (5h 4m drive from Carbondale). Passengers who prefer a shorter driving distance between the airport and the city can look for flights to airports in neighboring states, e.g., St. Louis Lambert International (STL) in Missouri (2h 10m).

  • How does KAYAK find such low prices on flights from the United States 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 the United States to Illinois.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from the United States to 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 the United States 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 from the United States to Illinois with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from the United States 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 from the United States to Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest day to fly to Illinois?

    Based on KAYAK data, the cheapest day to fly to Illinois is Friday where round-trip tickets can be as cheap as $382. On the other hand, the most expensive day to fly is Sunday, where round-trip prices are $603 on average.

  • What is the cheapest time of day to fly to Illinois?

    The cheapest time of day to fly to Illinois is generally in the evening, when round-trip flights cost $281 on average. Morning departures are around 43% more expensive than evening flights, on average. The most expensive time of day to fly to Illinois is generally in the afternoon, which is peak travel time and where the average cost of a ticket is $450.

Top tips for finding cheap flights to Illinois

  • Looking for cheap airfare to Illinois? 25% of our users found round-trip tickets to Illinois for the following prices or less: From Nashville $464, from Boston $491, from Atlanta $507
  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Illinois flight deals.
  • When you’re looking for flights to Illinois and you’re not sure which destination to pick, Chicago is perhaps the first city that comes to mind. The city is served by three airports, which makes it the best-known gateway into the Prairie State. If you like to choose airports based on airlines, keep in mind that the Chicago O’Hare International Airport (ORD) is the hub airport for American Airlines and United Airlines.
  • Midway International Airport (MDW) is the second largest airport in Chicago, and it’s mainly used by Southwest Airlines as a layover airport for dozens of destinations in the United States.
  • If you’re traveling to more than one destination in Illinois, Central Illinois Regional Airport (BMI) is a good option for those staying close to major cities like Rockford (2h 10m), Chicago (2h 45m), and Springfield (1h 10m) but prefer a smaller airport. Frontier Airlines, Allegiant Air, American Eagle, and Delta Connection are the airlines operating regular flights to Illinois from Orlando, Dallas, Atlanta, and Denver.
  • For passengers traveling with children and looking to rent a car at an airport in Illinois, keep in mind that local state laws require children under 2 years old to sit in a rear-facing child seat. From ages 4 to 8, children can sit in a forward-facing seat. Children between 8 and 12 years old can use a booster seat.
  • For passengers traveling with pets, you'll find pet relief areas at both of Chicago's international airports and also at Central Illinois Regional Airport.

Reviews of the top 5 airlines flying to Illinois

 
See real verified KAYAK customer reviews for airlines flying to Illinois. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from the United States to Illinois. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from the United States 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.
8.0
SouthwestOverall score based on 4241 reviews
8.0Comfort
7.5Entertainment
7.0Food
8.6Crew
8.1Boarding
Airline reviews

AC sub par. WiFi not working correctly. Ac sucked. Seats very narrow.

2.0 MediocreMike, Aug 2025AUS - BWI
Read more Southwest reviews

AC sub par. WiFi not working correctly. Ac sucked. Seats very narrow.

Near 4 hour flight with only 1 service. Had to use call button to request water. Internet and power not working until into flight. Internet would stop working during flight.

Southwest's seats are the least comfortable I have ever sat in.

The cabin was quiet for the redeye flight. The area was clean. The staff was great. The 787 Max was in good condition. Drawbacks were that the seat widths were tight for some passengers. The seat padding was at best average and for a long flight uncomfortable.

Southwest like most American domestic airlines, is a mediocre airline. But it is among the cheapest. Oh well.

My flight was delayed 50 minutes and we were rushed to board to then sit for 15 minutes until the pilot arrived. Unacceptable since we could have waited to board. Also the delayed flight was updated AFTER we boarded to more than the 10 minutes as originally stated.

Other than a bit of a delay, everything was good. Again, the boarding process and picking seats is the only thing I don't enjoy.

If we are going to have to pay for luggage, make it easier to do. Put something on the app during check-in so I don't need to do it at the kiosk. I've done it twice recently and I ended up having to pay at the desk because something went wrong at the kiosk in Tampa.

southwest just starting charging for luggage. hadnt realized it until it was too late. now out $70 when i couldve bought a carry on if i wouldve known. free bags was one of the only reasons i chose southwest over another airline (the other being no assigned seats, which is apparently also being changed). stupid business decision. wont be flying southwest anymore.

The quality of Southwest Airlines continues to degrade each time I fly with them. If it were not for the free luggage, I would probably choose another airline. Their prices are a little bit competitive, but way too high for the quality of the service. Southwest is not unique in this way. Domestic flight in the United States of America has continued to be a lower and lower quality product. Very sad when you compare the quality of domestic airlines to that of many international airlines around the world.

Flight attendant in first class gave poor service (like he didn't want to be there) and food was awful. We sat waiting for gate upon arrival over 45 mins.

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

Overall it was good. I missed my connection but I was put on another flight.

Overall a very poor experience - booked premium economy tickets but due to last minute flight delays , all my itinery went for a toss and had to fly economy class with no access to lounge or any compensation by united airlines to make up for the flight delays . i had expected better experience than that from united.

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.

I liked that the flight was nonstop from ORD to CIU for $200 round trip.

The schedule to Moline changed 5 times. The gate changed 6 times. That is a pathetic way to run an airline. No wonder that no one in our company flies on United Express to or from Moline. Changes happen most of the time. I learned my lesson on this trip…never again!

While the staff was pleasant and helpful, the following observations are for your awareness. There was some delay on the tarmac on take off and landing. The paid lunch/food offerings were limited. Entertainment was only available on WiFi at a cost.

The first flight was better in terms of the aircraft.

Smooth flight. Boarding was chaotic. Could not hear the gate agent over the intercom. People were lined up in the wrong lines. Groups one and two were told to board through line one and group 3 through line 2. All very confusing. Once in the air, the flight was smooth. There was no entertainment option on this aircraft, even though it was a larger aircraft.

Any flight to ORD after about 2pm this summer has been challenging. Flight was delayed getting in (coming from ORD) and that led to it not leaving before a ground stop due to lightening before they could fuel the plane, and so forth. They made up some time but we were still late in arriving at ORD, and that led to missed connections.

Food was ok, but not as good as I have had before on AA.

Pretty good. The food was just mediocre, the boarding and crew were good.

My flight got switched and my prepaid bag didnt transfer over properly so I paid to check ANOTHER BAG. I was placed in a middle seat and it was just miserable. At least it was a bulkhead row so I had legroom. The flight just never seem3d to end

Was not able to watch most shows on the entertainment site. They would not load

On Wednesday, July 30 we were in mid flight from Manchester to Charlotte and we turned around because the right engine was malfunctioning. That was the last flight out of Manchester that night. I was rebooked for Thursday, which became a weather event Friday. There were no seats left on the flight from Manchester to Charlotte. Consequently I didn’t leave Manchester until Saturday morning and we flew to Chicago so to say the least my scheduled flight and return to Iowa was three days off and it messed with my business schedule. Consequently cash flow. I would like some sort of acknowledgment of this event.

Dreadful experience. Our flight was delayed more than 8 hours due to a maintenance issue and the assistance from rebooking was poor. I was travelling with a bad knee and needed assistance waited in one place more than 3 hours before someone came with a wheelchair. The woman next to me was a 91 year old great grandmother who had waited more than 4 hours. There were moments of support from the staff but it appeared as they were going against the direction of management. It was apathy, lack of ownership and dismissive responses with small moments of kindness and understanding typically from grey haired, female, veteran staff..

Couldn’t get the door on the plane to close leading to a nearly 2 hour delay. But, hey at least they didn’t cancel the flight.

The flight was fine and the crew awesome. The problem is ORD and AA. Computers went down, ORD fell apart and a 40 min flight turned into a 3 hour trip. Guess the answer is to not try and fly to ORD after noon. But, as I said, crew was awesome and did everything they could to lesson the flight time.

The flight was fine but the 8 hour delay in Chicago was awful - 5 gate changes and repeated delays without an explanation. No vouchers. Nothing.

The flight was delayed twice with minimal explanation. The terminal and airplane were filthy. The food voucher didn’t even cover a tiny pizza from a kiosk in the terminal. All in all, a pretty miserable experience for a flight to attend a funeral

I will use spirit more New clean aircraft Excellent crew ! Quick boarding process !

Everyone was kind for the most part. I did travel with children and paid for seats and even then it was not as suitable. I tried calling their customer service prior to check in and I was told they couldn't help me because I didn't purchase my tickets with them.

Flight was late, after my first leg was cancelled altogether causing me to spend $$$ with another carrier. Seating is ridiculously tight, I can't recommend spirit if I cant depend on them to get me there and back on time.

Wow truly top notch airline Efficient nice snacks courteous staff Fast boarding !

The staff was very very rude in Las Vegas when boarding the flight. When presenting the boarding ticket. Las Vegas flight, it was hot and stuffy, it smelled really bad.

Dear All, I have harassment and accident with the flight attendant . This is my phone to talk 8168073567, please, leave phone message . Regards Emily,

The incoming plane ✈️ was delayed 5 hours en route to Raleigh. My flight was delayed for 5 hours 😢. Finally boarded and then de boarded due to an AC problem. A very tough and long night.

Just total easy flight experience!! What could you do better..? Hmmm..? There was nothing I can remember. Spirit was a far more comfortable and easy process than American, United & Delta. I'll always look for Spirit and I've told a few people about, since flying this past trip!! I'm a SPIRIT FAN!! Thank You, SPIRIT AIRLINES!! Very, VERY well done, 100%!! See you...SOON!! -Best, Linda R.

Spirit is a very uncomfortable travel experience. It’s cheap but you are squeezed into the seats like canned meat.

Great for the price. No wifi or entertainment, but gate agents and crew were fantastic and we boarded quickly and left on time.

sluggish boarding and arrival procedures, fake nice flight attendants, and lots of delays.

Disaster. They lied every step of the way. We ended up being delayed due to crew and then allegedly abandoned the flight because of a curfew at LGA. No rebooking to LGA at any reasonable time. No hotel. No meal vouchers. Had to sleep in the airport and fly to Newark instead. Will never fly Frontier again.

What I expected, nickeled and dined and a frontier flight attendant loudly complained about her job and lack of communication as she headed to the gate on her cell phone. Not professional.

As every law enforcement agency I could imagine surrounded the plane and we didn’t disembark for 2 hours and then had to stick around for another hour to go get our personal belongings after leaving them behind and being bused away from the plane, it was scary and inconvenient. We were given no information as to why this was happening. Lack of communication with passengers was disappointing.

After boarding and un-boarding twice over 6+hours, the flight was canceled.

Severe turbulence. Captain never came on to reassure passengers after things settled down.

My first flight was delayed 5 hours. The 2nd flight was canceled til the next day and the never even tried to compensate for it. Worse I was delayed again on the flight the rebooked me on.

Boarding in Orlando was not good. Giant mob at the gate, should have been lines.

Decent clean onboard experience. Okay discount airline experience. Unfortunately, any customer service interactions are difficult and unhelpful. There is no service. Also, a premium seat only gets you premium boarding if you line up first. Once they start general boarding you must go to the back of the line. Not very premium

Everything you need to know for your flight to Illinois

Cabin class types available on flights to Illinois

Cabin classes available on flights to Illinois. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

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