$96 Find Cheap Flights from Chattanooga 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 Chattanooga to Illinois departing on 7/30. 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 in flight searches from Chattanooga to Illinois, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Chattanooga to Illinois, as well as popular online travel agencies
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Flights Deals

Best Illinois Flight Deals from Chattanooga

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Chicago
Chicagononstop$189
Moline
Moline1 stop$294
Peoria
Peoria1 stop$372
St. Louis
St. Louis1 stop$229
Chicago
Chicagononstop$189
Moline
Moline1 stop$294
Peoria
Peoria1 stop$372
St. Louis
St. Louis1 stop$229

Cheap Flights from Chattanooga to Illinois

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

Thu, Dec 4 - Mon, Dec 8
American Airlines Logo
5:00 pm - 6:00 pmCHA-ORD
2h 00mnonstop
American Airlines Logo
1:54 pm - 4:30 pmORD-CHA
1h 36mnonstop
$189American Airlines
Find Deal
Wed, Jul 23 - Fri, Jul 25
Spirit Airlines Logo
11:41 am - 8:28 pmCHA-ORD
9h 47m1 stop
Spirit Airlines Logo
4:36 pm - 8:56 amORD-CHA
15h 20m1 stop
$191Spirit Airlines
Find Deal
Tue, Jul 15 - Tue, Jul 22
United Airlines Logo
1:58 pm - 3:08 pmCHA-ORD
2h 10mnonstop
United Airlines Logo
8:14 pm - 10:59 pmORD-CHA
1h 45mnonstop
$194United Airlines
Find Deal
Wed, Jul 23 - Tue, Jul 29
Spirit Airlines Logo
11:41 am - 8:28 pmCHA-ORD
9h 47m1 stop
Spirit Airlines Logo
5:05 am - 4:03 pmORD-CHA
9h 58m1 stop
$196Spirit Airlines
Find Deal
Wed, Oct 15 - Sat, Oct 18
American Airlines Logo
7:21 am - 8:25 amCHA-ORD
2h 04mnonstop
American Airlines Logo
12:03 pm - 7:53 pmORD-CHA
6h 50m1 stop
$199American Airlines
Find Deal
Fri, Aug 15 - Tue, Aug 19
Delta Logo
4:08 pm - 9:44 pmCHA-MDW
6h 36m1 stop
Delta Logo
6:04 am - 12:31 pmMDW-CHA
5h 27m1 stop
$209Delta
Find Deal
Thu, Sep 4 - Sat, Sep 13
Delta Logo
7:35 am - 12:45 pmCHA-ORD
6h 10m1 stop
Delta Logo
2:25 pm - 10:04 pmORD-CHA
6h 39m1 stop
$209Delta
Find Deal
Wed, Jul 16 - Fri, Aug 8
United Airlines Logo
7:01 am - 8:05 amCHA-ORD
2h 04mnonstop
United Airlines Logo
8:14 pm - 10:59 pmORD-CHA
1h 45mnonstop
$225United Airlines
Find Deal
Thu, Sep 18 - Sun, Sep 21
 Logo
11:51 am - 11:25 amCHA-PIA
24h 34m3 stops
 Logo
10:47 am - 8:41 pmPIA-CHA
8h 54m1 stop
Thu, Jul 17 - Sat, Jul 26
 Logo
4:58 pm - 9:52 amCHA-STL
17h 54m3 stops
 Logo
10:45 am - 1:41 pmSTL-CHA
25h 56m2 stops
Useful Info

KAYAK's insights & trends for Chattanooga to Illinois flights

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

What is the cheapest Chattanooga to Illinois flight route?

The cheapest price for flight routes found by users searching on KAYAK in the last 2 weeks for round-trip flights from Chattanooga to Illinois.

The cheapest ticket to Illinois from Chattanooga found in the last 72 hours was to Chicago, at $229 round-trip. The most popular route is from Chattanooga (CHA) to Chicago O'Hare Intl Airport (ORD), and the cheapest round-trip airline ticket found on this route in the last 72 hours was $229.

Can I save money by flying with a layover from Chattanooga to Illinois?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at $425 on average.

What is the cheapest month to fly from Chattanooga to Illinois?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Chattanooga 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 Chattanooga to Illinois is November, when tickets cost $274 (return) on average. On the other hand, the most expensive months are June and April, when the average cost of round-trip tickets is $389 and $378 respectively.

What’s the cheapest day of the week to fly from Chattanooga to Illinois?

The average price of all round-trip flights from Chattanooga to Illinois clicked on KAYAK for each day over the last 12 months.

When flying from Chattanooga to Illinois, you should consider leaving on a Saturday and avoid Sundays if you are looking for the best rates. For your return to Chattanooga, you’ll find the best rates on Saturdays and the most expensive ones on Mondays.

How far in advance should I book a flight from Chattanooga to Illinois?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Chattanooga 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 Chattanooga to Illinois, you should book around 5 weeks before departure. For the absolute cheapest price, our data suggests you should book 24 weeks before departure.


Good to know

Low seasonJanuary
High seasonJuly
Cheapest flight$96
Best time to beat the crowds with an average 17% drop in price.
Most popular time to fly with an average 6% increase in price.
Flight from Chattanooga to Chicago O'Hare Airport

FAQs - booking Illinois flights

  • How does KAYAK find such low prices on flights from Chattanooga 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 Chattanooga to Illinois.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Chattanooga 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 Chattanooga 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 Chattanooga 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 Chattanooga 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 Chattanooga 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 time of day to fly to Illinois?

    The cheapest time of day to fly to Illinois is generally at night, when round-trip flights cost $261 on average. Morning departures are around 8% 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 $465.

Top tips for finding cheap flights to Illinois

  • Looking for a cheap flight? 25% of our users found tickets from Chattanooga to the following destinations at these prices or less: Chicago $239 one-way - $356 round-trip

Reviews of the top 3 airlines serving from Chattanooga to Illinois

 
See real verified KAYAK customer reviews for airlines flying from Chattanooga to Illinois. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. 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 Chattanooga 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
DeltaOverall score based on 7983 reviews
7.9Entertainment
7.9Comfort
8.5Crew
8.2Boarding
7.3Food
Airline reviews

My husband upgraded our seats and I don't know if it was due to the type of planet was or if they didn't upgrade our seats. We were supposed to be in I believe comfort seats and they were just as tight as any other seat- no leg room and we are very tall people but at least it wasn't extremely cold. My husband did put in a complaint about our seating because he paid extra and if we would have known that the space and the tightness would have been the same, we just would have gotten the emergency row emergency row seats that we normally get. We love Delta but both our flights coming home we're not good. Oh I forgot to mention that on our flight to Hawaii our luggage wheels got broke and we had to purse new luggage on vacation then we never had this problem so we didn't know protocol and reported it after we got home only for them to tell is we only had 24hrs to report the damage. Not sure what was going on with Delta this vacation trip.

4.0 OkayMrs., Jul 2025LAX - RDU
Read more Delta reviews

My husband upgraded our seats and I don't know if it was due to the type of planet was or if they didn't upgrade our seats. We were supposed to be in I believe comfort seats and they were just as tight as any other seat- no leg room and we are very tall people but at least it wasn't extremely cold. My husband did put in a complaint about our seating because he paid extra and if we would have known that the space and the tightness would have been the same, we just would have gotten the emergency row emergency row seats that we normally get. We love Delta but both our flights coming home we're not good. Oh I forgot to mention that on our flight to Hawaii our luggage wheels got broke and we had to purse new luggage on vacation then we never had this problem so we didn't know protocol and reported it after we got home only for them to tell is we only had 24hrs to report the damage. Not sure what was going on with Delta this vacation trip.

My flight was extremely cold. I had a jacket and a cover was left in each seat. The cover was extremely thin and I have a disability, fibromyalgia and arthrithis and AC air is the worst. I closed my vent and my husbands vent and it still was frigid. I asked the attendant if I could get another cover and she quickly almost dismissively and totally unconcerned stating, (I quote) (one per chair) and walked off so quickly that I didn't get a chance to explain to her that I literally have adisability. I didnt want to make a seen so I set on that flight for over 5 hours in pain, joints locking up and extremely uncomfortable. When my fibromyalgia flares up my joints not only ache but they will lock up also and it takes me days to get back to my regular self even though I take medication for it. I felt like it would not have hurt anyone at all for her to just give me an extra cover because I'm sure they have all types of medical issues in people that fly every day.

After all the weather issues at least they got me to my destination the next day

My flight was canceled after being rescheduled for four days canceling my trip. Kayak and everyone affiliated with it I.e the airlines, and just fly have been excruciating to deal with. My trip to visit family had to be canceled as there was no way to make it. I am furious at all of you.

They delayed our flight because of bad weather in NY which was completely understandable. Then they cancelled our flight and a later flight that evening. The earliest we could fly was the next morning. We ended up buying last minute tickets on another airline and made it home slightly delayed but safely that evening. Delta kept saying it was weather related but if that was the case how did we make it back on another airline? The weather in NY was cloudy but not bad.

From Atlanta to Savannah - flight connection was way to short (we weren't even late landing ) and flight was already boarding when we landed - we were told we were the last on board and so we had to gate check our bags. Once we got on the plane, there were at least seven open bag spots so that was unnecessary delay. There should be better communication between the gate agent and the crew.

Crew was excellent. Comfort seats not as nice as other kinds of planes.

Not a "Delta" issue, but a JFK issue: We booked a connecting flight with 3 1/2 hours between to clearn immigration and customs. Our inbound flight (BCN to JFK) was on the taxiway 45 minutes which ate into our layover time. Immigtration was insanely quick with the CBP MPC app; however, clearing TSA (again, after we were ALREADY cleared in Spain on the inbound international flight) took over 95 minutes. This left us with 10 minutes before boarding the connecting flight (JFK to SAN) to walk to the far end of Terminal 4 and try to find food. We didn't find any food that could promise to serve us in under 10 minutes so we boarded the Delta flight after coming off a plance and an 8-hour flight knowing that we wouldn't be served any food on the next 5 1/2 hour flight. I feel like Delta needs to put pressure on the JFK TSA to open more screening stations (by our count, we saw only 5 scanners open and a line of - as we said - over 90 minutes. The insult is that we WERE ALREADY SCREENED through TSA, but as you come off one flight into the USA, you have to go through the whole process again. It seems like if you have a connecting flight, there should be a way to pass through immigration and customs without needing to return through TSA.

It was a great flight and the stewards and stewardess were all kind and accommodating!! The seats were comfortable and entertainment screen excellent!

There are 4 flights in consecutive gates with about the same departure time. Two flights were boarding at the same time. One was delayed or boarding would be happening at the same time. I am not sure what Delta and LAX need to do to have a better layout at the end of Terminal 2

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.

Overall poor for me I paid extra for seats with leg room and my regional flights exit row seats have less leg room then the others that's money that could have been saved and on my final flight home the flights air was not operating it was unbearably hot in the cabin I will be contacting United and filing a DOT complaint

There's just no way to sit fully upright and comfortably in these seats. There needs to be 2 more inches of room, and that's not something that only one person on the flight needs - the whole flight needs 2 more inches of room. If that means you sell 6 less seats, so be it. It's too close for anyone. Forcing people to pay for "premium" economy just to get "barely enough space to breathe" isn't really an answer to that.

The crew were very nice. The Chocolate is good and v there’s no entertainment. Thanks

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 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.

Most miserable flight ever. We waited almost 2 hours on the runway because the flight was oversold. American offered $1200 credit. Then there was some nonsense about weight distribution. Ridiculous. No food for 8 plus hours on the flight. I will be writing a letter.

The flight was 2 hour delayed, otherwise everything was excellent. The delay was due to the hourly limit requirement so given that as a reason, I'm happy with the flight!

Not sure the logic of the boarding in Groups. I was loaded first on the aisle. Then the guy in the middle. Then the guy by the window. Constantly holding up the other people boarding behind them with us blocking the aisle and this happened in most of the other rows

To start, I’d like to say that every American Airline personnel I interacted with on the ground, especially flight crew, was very friendly and did their best to help me out. Despite this, however, my experience with the airline was an entire mess. The 7:19 PM flight was heavily delayed due to weather, and pushed to 10:30 AM the next morning. Because of this, I had to spend the night inside of the airport. At some point later in the night, I got an email saying that the flight had been canceled. I called the support number, and the representative on the other line told me that the flight was still on and that I didn’t need to rebook. The next morning, no one came to the gate to open the door for the crew until almost 11 AM. By this time the flight crew had been waiting for over an hour, and they had called management to get someone to open the door for them multiple times. Around 11:30, the gate screen had changed to a different flight. I ended up buying a last minute ticket with Southwest airline just to get to Chicago, because the next flight with American wasn’t until 7:19 pm that day. Now, earlier that morning my suitcase had been sent ahead of me to ORD. I went to baggage claim to ask them if I could have my suitcase forwarded to where I was staying. The representative at SDF baggage claim said they could and put the claim in for me. As I was going back through TSA, I got an email that the airline had found my suitcase, but the next step was to send it BACK to SDF. I called the airline support number again, and I made it clear that my suitcase needed to stay in Chicago and to not come back to SDF. The representative told me that they would hold my suitcase at ORD and that it wasn’t going to be forwarded anywhere. Once I got there, I found that they had loaded my suitcase onto a plane to send it back to SDF. Thankfully, I had gotten to the baggage claim counter in time for them to put in a request to bring my suitcase back up. My refund with the airline is processing already, but because of this entire experience and miscommunication at every turn of the way, I will not book with American Airlines in the future.

The plane was late and then sat on the runway for almost 45 minutes before taking off.

Crew professional. Easy bag drop off. On time. Good entertainment.

Everything was great. Boarding, early departure, early arrival, and deplaning were smooth. Smooth flight.

Per usual, flight status, staff courtesy and professionalism were excellent

Everything you need to know for your flight from Chattanooga to Illinois

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