$96 Find Cheap Flights from Chattanooga to Illinois - Compare and Save

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Cheap Flights from Chattanooga to Illinois

Cheapest round-trip prices found by our users on KAYAK in the last 5 days
Chicago
Chicago1 stop$251
Moline
Moline1 stop$349
Peoria
Peoria1 stop$299
St. Louis
St. Louis1 stop$281
Chicago
Chicago1 stop$251
Moline
Moline1 stop$349
Peoria
Peoria1 stop$299
St. Louis
St. Louis1 stop$281
Booking Insights

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.

How much is a round-trip flight from Chattanooga to Illinois?

Flight prices are typical for this route right now.

Flights to Illinois from Chattanooga usually cost between $249 and $337 in November.
The lowest price found in the past 5 days was $251 on Multiple Airlines (Nov 5-Nov 10).

What is the cheapest Chattanooga to Illinois flight route?

The cheapest ticket to Illinois from Chattanooga found in the last 5 days was to Chicago, at $249 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 5 days was $249.

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 $374 on average. Morning departures are around 6% 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 $432.

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

No, with an average price for the route of $338, prices are generally cheapest when you fly direct.

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

The cheapest month for flights from Chattanooga to Illinois is February, when tickets cost $221 (return) on average. On the other hand, the most expensive months are July and March, when the average cost of round-trip tickets is $358 and $326 respectively.

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

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

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

To get a below average price on the flight from Chattanooga to Illinois, you should book around 3 weeks before departure, which saves you about 25% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 10 weeks before departure.

Good to know

Low season

December

Cheapest flight

$96
Best time to beat the crowds with an average 18% drop in price.
Most popular time to fly with an average 21% 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.

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 $317 one-way - $328 round-trip

Reviews of the top 3 airlines serving from Chattanooga to Illinois

 
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.
7.8
DeltaOverall score based on 8499 reviews
8.5Crew
7.8Comfort
7.8Entertainment
8.1Boarding
7.2Food
Airline reviews

Delta was fine though my flight was delayed 4 hours into LGA and my return into ORD involved a taxi of 1+ hour to the gate

4.0 OkayEdith, Aug 2026
Read more Delta reviews

Delta was fine though my flight was delayed 4 hours into LGA and my return into ORD involved a taxi of 1+ hour to the gate

It was as good as it could be. Flying is not a pleasant experience these days.

There was an unruly family behind us that made the short flight miserable!!! The cabin crew did nothing to contain it.

Flight delay was frustrating, also you cannot checkin online without delta app, web browser check-in throw errors

Got on the plane and sat there for an hour before departure.

Very large passenger too space from my own seat. Arm board couldn’t be lowered because of his size. It wads very uncomfortable trip, as the flight was full couldn’t move anywhere having back pain because of the position in which I was the entire flight.

Cramped seating for me. Luckily it wasn’t a long flight

5 hour delay. They blamed the weather but it was the computer issues they had been dealing with for days.

I usually have a positive experience with Delta. Complimentary upgrades are always nice!

The captain was amazing and kept us informed throughout that there would be some rough air. The flight also got delayed but we were able to actually leave on time, which was great.

Like the fact that the boarding was expedited. But the delay and chaos around the onboarding was not appreciated.

The flight crew were very helpful. The seats were very close together. There was barely room to sit without touching the person next to you.

I’m an EP on AA every year for more than a decade but this was a very pleasant and surprising experience. Clean and sizable plane for HOU to CHI. 5 row first class. And excellent food in first class the steak option was really good. Your flight attendants even better. Seat 5A

Gluten free snack options and meals that offer both gluten free and dairy free.

Not a bad flight but a long delay boarding and taking off due to the pilot not arriving on time.

I would have preferred a flight voucher and to hop on a different flight. Delayed over 6 hours.

I almost missed my connection in Chicago due to having to wait on a gate to be open I am assuming. Having to run from E terminal to C terminal and I barely made it there before they closed the door. This may not be the actual airline's fault it's crazy how there is so little time between flight especially when they are placed so far apart in the airport.

The head rest is too big and cannot be placed differently/removed. Causes one head to tilt forward and increase back pain

Another delayed flight. When the delays exceed the duration of the flight, it’s a problem.

Trip was great. A wild landing in Ottawa with the wind and rain, but the pilot did a great job. Always love flying United.👍

We landed slightly early but then sat in holding area waiting for our gate to clear out for about an hour, so technically we arrived one hour late at the gate at ORD. The airport may be partially responsible here, but regardless of who is responsible, it was a bad experience to be so close yet unable to get off the plane.

Not one thing to like. Three flights all with “mechanical” delays. Never got to where I was going and spent additional $500 for a hotel room. American Airlines is the worst in the industry!

It was canceled at the last minute. While I was literally at the airport. Messed my entire trip up.

The flight was good. We had to spend almost an hour on the tarmac when we arrived in Dallas. Waiting for a gate. What’s the point of arriving early if you have no gate to park at?

Terrible. Flight delayed for more than 8 hours with only a $12 meal voucher provided for the inconvenience. The airplane did not have breaks on arrival yet they still made us go through the motions and board on time knowing we could not take off then sit for 40+ minutes before having to get of the time. A complete waste of my time. I cannot believe they can stay business with these shenanigans. I’ll avoid this company like the plague moving forward as the lack of accountability is disgraceful.

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

Delayed due to no crew. On a major holiday travel day.

Fantastic! If it had not been for a check-in agent in Knoxville I may have not gotten my passes on British Airways. I couldn’t check-in online because British Airways had messed us the info on my tickets to London & Inverness. AA’s was great! British Airways was a continuous series of delays and frustrations.

Pulled out of the gate only to sit in the tarmac for an hour and a half for paperwork. Paperwork. Went back to the gate to refuel.

The arriving flight was a few minutes late, but the gate crew helped to deplane and board our outgoing flight quickly and efficiently. We were able to depart quickly and arrive at ORD almost at the posted time. Great job.

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

Information on your arrival and departure airports