$38 Find Cheap Flights from Atlanta to Illinois - 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 from Atlanta to Illinois departing on 7/24. 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.
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Cheap Flights from Atlanta to Illinois

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Chicago
Chicagononstop$144
Moline
Molinenonstop$299
Peoria
Peoria1 stop$309
Bloomington
Bloomington1 stop$250
Champaign
Champaign1 stop$348
Springfield
Springfield1 stop$251
St. Louis
St. Louisnonstop$57
Chicago
Chicagononstop$144
Moline
Molinenonstop$299
Peoria
Peoria1 stop$309
Bloomington
Bloomington1 stop$250
Champaign
Champaign1 stop$348
Springfield
Springfield1 stop$251
St. Louis
St. Louisnonstop$57

Book Cheap Atlanta to Illinois Plane Tickets

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

Thu, Jul 30 - Sun, Aug 2
Frontier Logo
4:43 pm - 5:37 pm
ATL
-
STL
1h 54mnonstop
Frontier Logo
6:34 pm - 9:37 pm
STL
-
ATL
2h 03mnonstop
$57Frontier
Fri, Jul 24 - Fri, Jul 31
Frontier Logo
8:05 am - 8:57 am
ATL
-
STL
1h 52mnonstop
Frontier Logo
4:57 pm - 7:56 pm
STL
-
ATL
1h 59mnonstop
$65Frontier
Wed, Jul 29 - Fri, Jul 31
Multiple Airlines Logo
10:48 pm - 10:37 am
ATL
-
RFD
12h 49m
1 stop
Multiple Airlines Logo
7:50 pm - 9:41 am
RFD
-
ATL
12h 51m
1 stop
$193Multiple Airlines
Wed, Jul 29 - Sun, Aug 2
Multiple Airlines Logo
10:48 pm - 10:37 am
ATL
-
RFD
12h 49m
1 stop
Multiple Airlines Logo
11:27 am - 8:23 am
RFD
-
ATL
19h 56m
1 stop
$196Multiple Airlines
Sat, Aug 1 - Sun, Aug 2
Delta Logo
1:45 pm - 2:11 pm
ATL
-
EVV
1h 26mnonstop
Delta Logo
5:59 pm - 8:34 pm
EVV
-
ATL
1h 35mnonstop
$259Delta
Thu, Jul 30 - Wed, Aug 5
Delta Logo
2:43 pm - 3:34 pm
ATL
-
BMI
1h 51mnonstop
Delta Logo
4:24 pm - 7:20 pm
BMI
-
ATL
1h 56mnonstop
$299Delta
Fri, Sep 4 - Tue, Sep 8
American Airlines Logo
12:29 pm - 4:13 pm
ATL
-
PIA
4h 44m
1 stop
American Airlines Logo
6:00 am - 11:25 am
PIA
-
ATL
4h 25m
1 stop
$309American Airlines
Thu, Jul 23 - Tue, Jul 28
American Airlines Logo
7:53 pm - 12:22 am
ATL
-
PIA
5h 29m
1 stop
American Airlines Logo
9:50 am - 7:36 pm
PIA
-
ATL
8h 46m
2 stops
$314American Airlines
Tue, Nov 3 - Sat, Nov 7
United Airlines Logo
11:12 am - 5:28 pm
ATL
-
CMI
7h 16m
1 stop
United Airlines Logo
6:30 am - 12:16 pm
CMI
-
ATL
4h 46m
1 stop
$348United Airlines
Tue, Nov 3 - Sat, Nov 7
United Airlines Logo
1:21 pm - 5:28 pm
ATL
-
CMI
5h 07m
1 stop
United Airlines Logo
6:30 am - 11:24 pm
CMI
-
ATL
15h 54m
2 stops
$438United Airlines
Booking Insights

KAYAK's insights & trends for Atlanta to Illinois flights

Get data-powered insights and trends into flights from Atlanta 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 Atlanta to Illinois?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Atlanta to Illinois departing in September.

What is the cheapest Atlanta to Illinois flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to Illinois from Atlanta found in the last 5 days was to Chicago, at $136 round-trip. The most popular route is from Atlanta (ATL) to Chicago O'Hare Intl Airport (ORD), and the cheapest round-trip airline ticket found on this route in the last 5 days was $149.

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

The average price for all round-trip flights from Atlanta to Illinois depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to Illinois is generally at night, when round-trip flights cost $201 on average. Morning departures are around 5% cheaper 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 $315.

Can I save money by flying with a layover from Atlanta 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.

No, with an average price for the route of $360, prices are generally cheapest when you fly direct.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Atlanta 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 Atlanta to Illinois is November, when tickets cost $144 (return) on average. On the other hand, the most expensive months are June and September, when the average cost of round-trip tickets is $332 and $229 respectively.

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

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

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

How far in advance should I book a flight from Atlanta 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 Atlanta 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 Atlanta to Illinois, you should book around 2 weeks before departure, which saves you about 36% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 6 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$38
Best time to beat the crowds with an average 16% drop in price.
Most popular time to fly and prices are also 3% lower on average.
Flight from Atlanta to St. Louis

Flights from Atlanta to Illinois: the best tips from KAYAK users

Insights shared by verified travelers who flew the route from Atlanta to Illinois 
Dr. JosephFlew with United Airlines
ATL
-
ORD
Apr 2026
Always keep track of the weather at both locations and where the inbound flight is coming from.
Verified travelerFlew with United Airlines
ATL
-
ORD
Apr 2026
Make sure the flight you select has more than 3 hours as time allotted for transiting to another flight. Most of United Airlines flights get delayed and if you don’t have enough time, you’ll be missing the next flight for sure. Have extra budget for shelter expenses because most of the economy tickets does not qualify for shelter accommodation/ voucher when your flight is delayed.

FAQs - booking Illinois flights

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

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Atlanta 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 Atlanta 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 Atlanta 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 Atlanta 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 Atlanta 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 Atlanta to the following destinations at these prices or less: Chicago $137 one-way - $243 round-trip

Reviews of the top 5 airlines serving from Atlanta to Illinois

 
See real verified KAYAK customer reviews for airlines flying from Atlanta 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 Atlanta 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.
7.9
SouthwestOverall score based on 4250 reviews
8.6Crew
7.5Entertainment
7.0Food
8.1Boarding
8.0Comfort
Airline reviews

Flight was delayed over 3 hours. Planes were dirty. Staff indifferent. And they serve vegan pretzels as snacks.

2.0 MediocreMatthew, Jun 2026
CVG - MDW
Read more Southwest reviews

Flight was delayed over 3 hours. Planes were dirty. Staff indifferent. And they serve vegan pretzels as snacks.

The flight was smooth. The Southwest experience has degraded overall, but this one was okay.

The checking experience in Orlando was terrible, almost missed the flight. Too many travelers and Southwest completely understaffed.

no service at all due to turbulence. they should've at least given us snacks, there were only 10 people on the entire flight.

Gate agents were informative and friendly… flight attendants were as well. Had a fun time chatting about their legacy AirTran experiences as a former fan of the airline that Southwest acquired.

The fluidity of the entire process of boarding the plane the flight attendants attentiveness. The flight attendants also provided coloring books for my kids who loved it.

Excellent. The lady boarding the flight was awesome. Very efficient, and she got everyone on line.

It was great! The new boeing has much more space and charging ports!

I kept getting h notifications that the flight was delayed. At the airport it was only 2 mins delay. Very confusing. No WiFi on the plan. Snacks very salty. No alternative

I like the boarding procedure. A bumpy ride, but it couldn't be helped. Please make sure the exit seats are clearly indicated.

The flights are constantly late anymore, and they won't even give you a glass of water on the plane. For years, they were able to do a service on this flight from Atlanta to Knoxville and Knoxville Atlanta now they say it's too short of a flight. You can't even get a quick drink of water.

Original flight was delayed, then cancelled and the gate staff did not expedite rebooking. Also, no instructions were given that a ticket number was needed before being called to facilitate rebooking. This could have been much more organized.

Only beverages were offered to first class and I thought the flight attendant could have also served the Delta Comfort as well instead of sitting down and staring at her phone and walking past all of us to the back of the plane to charge her phone more. There was a complete lack of turbulence and was safe enough for flights attendant to walk around in the front of the plane, collect trash and serve a few people water and turn off the seat belt light. Also didn’t enforce people putting their seats into the upright position and allowed two passengers to remain reclined during landing. They seemed out to lunch completely. Usually my experience on Delta is much better.

Definitely a southern flavor. Cordiality was evident even though no drinks or snacks were served.

No service flight that took 5 hrs and a stop at an unscheduled airport. Crew and pilots did their jobs

For some reason, TSA Atlanta didn’t have my bag on the flight on time and they don’t have to provide Delta a reason for that.

Delta does a great job with entertainment and free wifi. I can still be in touch with my colleagues while in the air.

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

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

I had a terrible experience. My flight got delayed from Atlanta to Chicago on Monday April 6, 2026, and that led to me missing my next flight to Brussels. United Airlines didn’t provide me with any accommodation for shelter. I had to sleep at the airport in Chicago. The next flight I was put on didn’t leave until the evening hours of Tuesday 4/7/2026.

Just a bad day to fly. Flight was delayed from scheduled 6:50 pm departure to 8:50 pm. Combination of factors mostly related to weather at the destination airport (which is where the incoming flight originated) which delayed the inbound flight over an hour. Once on board, we taxied but had to hold again on the taxiway for 10 minutes or so. We did not get wheels up until after 9 pm. The flight was smooth but about 18 minutes from our destination, we had to hold for several minutes more due to weather at ORD. We finally landed at ORD about 11:08 pm (accounting for the time difference, that was about a 3 hour delay from our scheduled departure time). It felt like we were never going to get to our destination. But the flight crew and attendants were very good. The movie selection onboard was also very nice. Got to watch half of a movie just during our taxi from the gate at ATL due to the delay!

Everything was great except for the boarding process. Everyone is lining up all at the same time and it’s hard to tell between the groups as they are way too large.

Excellent experience. Starting with the agent at the Premier bag drop who noticed I was very early for my scheduled flight and offered to rebook me on an earlier flight with my seat preference. She would not let me leave the counter until she knew that all of the changes and new boarding pass showed up on my United app. At the gate, the flight boarded quickly such that we departed early and the flight was smooth. We arrived 20 minutes early at ORD and I was able to be home in time for dinner. One of the best flights I've had.

Cramped seat even in economy plus seat 10A. Over booked flight, no space for the bags

The agents was very rude and they charged me $50 for a carry-on bag saying that it was too big and then I saw someone going on a plane with the same size bag as me

Great onboard crew. Boarding was a zoo, I got in line before pre boarding in Group 2, still had my bag force checked. WiFi was glitchy all flight. Seat and bathroom are both tiny unless you pay $$$ for first class.

The passenger in the row in front of me was listening to a political speech on his phone at full volume with no headphones and it was disturbing all of the passengers around him for several rows. I asked 2 of the flight attendants to speak to this passenger but they only shrugged. It was obvious that they were afraid there might be conflict and would not say anything. I had to take it upon myself to tell the passenger that he needed to turn it off or wear headphones as it was disturbing everyone around him not wearing their own headphones. I was very disappointed in the United flight attendants.

Amazing comfortable chairs great snacks super friendly staff pilots did excellent job. Smooth sailing all the way. Definitely be flying United more.

I liked that handicap assistance was right inside the door. I was able to get help right away. It is stressful when I have to think of flying and know that an airport is a large place and there is always a great distance to get to the loading area. My walking is not great anymore. With so many people flying, it is so great to have someone to assist you. I am very grateful for the help.

So overall the flight was just average and nothing special. They overbooked some of the flights and they ended up running out of overhead storage space so we had to check our carry-ons which wasn't terrible but we were inconvenienced because of the second connecting flight with a long layover we couldn't get our bags until the final destination. Most of the flight attendants were pretty good and overall the meals were not that great because the chicken was dry and overcooked. They also didn't provide butter or any kind of spread with the bread which is cheap and concerning. The American airlines staff at the check-in counter was kind of unprofessional because this lady just started singing in the middle of checking us in and that's weird. The worst part of the flights was the terrible conditions of the bathrooms which were unclean and did not have toilet paper or toilet tissue available which is kind of insane for a 14-hour and 8 and 1/2 hour flight.

This was a hard flight. 3 delays out of OKC (1 on the Tarmac). Delay in Atlanta coming to Dallas. total travel time was the equivalent of driving from OKC to Atlanta.

Very disappointing. Flight was delayed by 1.5 hours and food options are very underwhelming even for first class seats (same food given to economy seats)

Our flight was delayed 3 times and this is why I am giving such low reviews. Everything else was okay but being in the airport at 4:30pm for my initial flight at 7pm to not leave until after 9:30pm is insane,

The flight was on time/early, attentive crew, and everything overall went smoothly. Disappointed that WIFI was not working for the flight.

Arrived 40 min early which was great - sat in runway for 35 min so no gain. Then waited for luggage 45 min. They need to staff accordingly knowing its one of the busiest week in Phx

Initial flight was cancelled at the time of arrival to the airport, flight alternative requires switching from direct to flight with a layover, and the plane felt like it would split apart, it was so rattle-y.

Everything was great except British airways lost our luggage that was gate checked all the way through to Italy. No one knows currently where one is and the other one may be in route to Amsterdam to meet us but not sure. If you can Hale’s it would be awesome. The website is not helpful.

American Airlines actually put me on a Delta flight. They didn't have to do that. They could have offered me a flight the next day or even two days later. But, American Airlines agents put me on a Delta airplane from Atlanta to Sao Paulo, instead of going through Miami when my flight to Miami was cancelled. American Airlines made sure that I got to my destination on time. I appreciate that.

Delayd flight out of atl as always miss my conection in dfw no flight untill next day

A 630departure flight Delayed 6hours! They changed my gate, I moved to the new gate. Had our flight on the screen for 12noon departure. I go get above to eat, check screen again and the flight was gone, no notice no announcement, nothing!! They sent my bag on the flight I wasn’t on, got it back to me 3days later. Thank goodness they did refund my money but I will NEVER fly them again.

Plane and crew on board were fine. Everything else was terrible.

Inbound plane was on time and flight departed on time with no issues while boarding.

Too many extra fees, uncomfortable, little leg room. Will not recommend this airline.

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.

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.

My flight was canceled I was promised a reginf still not received.

They canceled flight. Hard to believe there was even a plane incoming for us to get on

Horrendous. I do not recommend Frontier. The passengers lack manners and decency, and the flight attendants lack professionalism. If I wasn’t in a bind to fly with 48 hours notice for a job interview, I would not have selected a flight with Frontier and I never plan to fly with them in the future.

Nothing I missed my first flight because my boarding pass said one thing and another passenger on the same flight said another. I didn’t get notified of a gate change until 8:39 pm which was one minute before the flight departed at 8:40pm when we explained this to gate agent Dorsey prior to the flight departing she was extremely short and had nasty attitude. Some of the passengers in my party including myself needed to catch that flight due work the next which included presentations and court litigation. We were deeply saddened and frustrated how Frontier handled this situation. We were told that the flight was over booked by 19 seats and they constantly change gates to make people miss their flight. If that is true I will ensure there will be a class action lawsuit against frontier airlines.

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

Information on your arrival and departure airports