$63 Find Cheap Flights from Austin 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 Austin to Illinois departing on 6/10. 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, 0 bags

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 Austin to Illinois.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Austin to Illinois.
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Cheap Flights from Austin to Illinois

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Chicago
Chicago1 stop$201
Moline
Moline1 stop$231
Peoria
Peoria1 stop$277
Bloomington
Bloomington1 stop$309
Champaign
Champaign1 stop$270
Springfield
Springfield1 stop$329
St. Louis
St. Louis1 stop$139
Chicago
Chicago1 stop$201
Moline
Moline1 stop$231
Peoria
Peoria1 stop$277
Bloomington
Bloomington1 stop$309
Champaign
Champaign1 stop$270
Springfield
Springfield1 stop$329
St. Louis
St. Louis1 stop$139

Book Cheap Austin 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 Austin 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 Austin to Illinois

Tue, May 26 - Tue, Jun 2
Frontier Logo
9:13 pm - 7:23 pm
AUS
-
STL
22h 10m
1 stop
Frontier Logo
6:33 pm - 1:04 pm
STL
-
AUS
18h 31m
1 stop
$139Frontier
Sat, May 23 - Tue, May 26
Frontier Logo
9:13 pm - 7:23 pm
AUS
-
STL
22h 10m
1 stop
Frontier Logo
6:51 pm - 9:47 pm
STL
-
AUS
26h 56m
1 stop
$151Frontier
Fri, May 29 - Wed, Jun 3
Delta Logo
5:00 pm - 10:21 pm
AUS
-
MLI
5h 21m
1 stop
Delta Logo
5:56 am - 1:43 pm
MLI
-
AUS
7h 47m
1 stop
$231Delta
Thu, May 28 - Wed, Jun 3
United Airlines Logo
6:40 am - 12:37 pm
AUS
-
MLI
5h 57m
1 stop
United Airlines Logo
10:40 am - 4:07 pm
MLI
-
AUS
5h 27m
1 stop
$256United Airlines
Fri, May 29 - Thu, Jun 4
American Airlines Logo
6:22 pm - 11:55 pm
AUS
-
MLI
5h 33m
1 stop
American Airlines Logo
4:24 pm - 10:45 pm
MLI
-
AUS
6h 21m
1 stop
$270American Airlines
Sat, Jun 20 - Wed, Jun 24
United Airlines Logo
5:09 pm - 10:20 pm
AUS
-
CMI
5h 11m
1 stop
United Airlines Logo
6:30 am - 11:56 am
CMI
-
AUS
5h 26m
1 stop
$270United Airlines
Sun, May 24 - Sat, May 30
American Airlines Logo
5:40 pm - 11:58 pm
AUS
-
PIA
6h 18m
1 stop
American Airlines Logo
4:46 pm - 10:42 pm
PIA
-
AUS
5h 56m
1 stop
$277American Airlines
Sat, Jul 11 - Wed, Jul 15
Delta Logo
6:25 am - 11:23 am
AUS
-
BMI
4h 58m
1 stop
Delta Logo
4:14 pm - 10:07 pm
BMI
-
AUS
5h 53m
1 stop
$309Delta
Sun, Aug 2 - Sun, Aug 16
Multiple Airlines Logo
7:45 pm - 6:52 pm
AUS
-
PIA
23h 07m
1 stop
Multiple Airlines Logo
5:23 pm - 12:07 am
PIA
-
AUS
6h 44m
1 stop
$323Multiple Airlines
Fri, Jun 5 - Mon, Jun 8
Multiple Airlines Logo
11:35 am - 9:17 am
AUS
-
RFD
21h 42m
1 stop
Multiple Airlines Logo
9:10 pm - 11:59 pm
RFD
-
AUS
26h 49m
2 stops
$360Multiple Airlines
Booking Insights

KAYAK's insights & trends for Austin to Illinois flights

Get data-powered insights and trends into flights from Austin 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 Austin 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 Austin to Illinois departing in May.

What is the cheapest Austin to Illinois flight route?

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

The cheapest ticket to Illinois from Austin found in the last 72 hours was to Chicago, at $203 round-trip. The most popular route is from Austin (AUS) to Chicago O'Hare Intl Airport (ORD), and the cheapest round-trip airline ticket found on this route in the last 72 hours was $203.

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

The average price for all round-trip flights from Austin 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 $239 on average. Morning departures are around 15% 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 $496.

Can I save money by flying with a layover from Austin 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 $335, prices are generally cheapest when you fly direct.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Austin 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 Austin to Illinois is October, when tickets cost $46 (return) on average. On the other hand, the most expensive months are March and April, when the average cost of round-trip tickets is $1,104 and $902 respectively.

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

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

If your flying dates are flexible, you should consider flying to Illinois on a Thursday, as we generally find the cheapest rates on that day for this route. On the other hand, Sunday is the most expensive day to fly from Austin to Illinois. For your return ticket, we recommend flying on a Friday and avoiding Mondays for the best deals.

How far in advance should I book a flight from Austin 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 Austin 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 Austin to Illinois, you should book around 4 weeks before departure, which saves you about 51% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 5 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$63
Best time to beat the crowds with an average 14% drop in price.
Most popular time to fly and prices are also 9% lower on average.
Flight from Austin to St. Louis

FAQs - booking Illinois flights

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

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Austin 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 Austin 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 Austin 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 Austin 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 Austin 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 Austin to the following destinations at these prices or less: Chicago $217 one-way - $333 round-trip

Reviews of the top 5 airlines serving from Austin to Illinois

 
See real verified KAYAK customer reviews for airlines flying from Austin 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 Austin 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 4314 reviews
8.6Crew
7.0Food
8.1Boarding
7.5Entertainment
8.0Comfort
Airline reviews

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

4.0 OkayCrystal, Apr 2026
MSY - MDW
Read more Southwest reviews

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

First time I've had to use the disabled accommodations. And I could not have had a better experience with Southwest, i was having trouble getting from one terminal to another due to my heart failure. And the next thing I know a Southwest agent had made sure. I had a wheelchair at all my flights. Can't thank them enough.

For the first time in a long time, the Wi-Fi actually worked the entire flight! The flight crew was amazing as usual.

Great flight. I didn't get a drink because I was asleep whole on the flight.

The new seat assignment thing is wierd. If you don’t pay for a seat they always assign you a middle seat regardless of how many people are on the flight. Idk… the new company that bought Southwest is trying to make it more profitable, but I’m just not seeing it. The flight attendants aren’t having as much fun anymore. It just feels like the airline is slowly dying. IMO. We shall see if Southwest is the next Toy’s R Us.

The Air hostess were very rude on my flight from Houston to Austin . Their regular communication itself felt a they are shouting at people.

Plane was late. Zero service for 2+ hour flight and it was not that bumpy.

Love them will get a Southwest card to track my points and keep flying with them. My family and I were pleased with the services.

I have roller bag with food and medication told me I couldn't bring on my 2nd flight today. 15 years flying with SW never an issue with that bag.

Great flight. Good snacks and drinks. Grateful it was free. The flight from Nashville to louisville, i think her name was Tracy (not sure that's right) super awesome, nice and cheerful. She really enjoyed being at work today! She was the person who scanned the boarding pass on flight wn941. She should be recommended for a raise !

The agent at check in and at the gate were less than thrilled to be at work. I'm not a fan of Kayak's placement on the plane. I got put in the middle seat and none of my preferences were used.

In ATL they have two sets of departure screens. Follow what is on your airline's departure board - the ATL Airport Authority departure board had completely incorrect details about the gate assignment for my flight, which would have made me miss boarding.

Flight was delayed it was hot while sitting on the plane, one engine was working on the plane until they had to do some jimmy rigging down the runway in order for the other engine to charge up. It was ridiculous

The flight was very good and the staff was very friendly and helpful!

The only thing I would say is we tried to get on a standby earlier flight, but with our fair we couldn’t. That seems senseless to leave with open seats..

Very easy to use and convenient, you can perform any action within the same portal

In a world of delays, Delta was on time both ways! Boarding was fast and efficient. Staff was friendly. AND wifi worked.

WiFi didn’t work. Flight delayed 3 hours Crew members were illiterate Seat lean back did not work.

Flight was delayed, we could have been notified earlier and in a consistent manner. App was not refreshing for another passenger to get the latest flight status. We could have stayed and waited at the hotel instead of waiting at the airport had we known the flight was going to delayed for more than 5 hours. The toilet is too tight, and needs to be cleaned more frequently (every hour). The entertainment screen froze, the touch screen not responding to touch. We were upgraded to comfort, it is more comfortable than regular economy seats.

This wasn't my experience with Delta. It was just the Pegasus flight. Seats were very hard. Staff was kinda rough. Not very nice. Charged me for snacks. For a 4 hour flight I would've expected more.

Standard flight with a drinks and a snack- overall very quick flight. The flight attendants were very strict, bordered on rude.

Delayed - weather wasn't bad at either end. Also sat on tarmac in ORD.

boarded early to only find out that flight would sit at gate for 45 min to an hour. Landed in chicago and sat on runway for over an hour before got to gate. Total delay was extensive for a 45 min flight door to door.

The flight was significantly delayed. The inbound flight from EWR was delayed departing because of mechanical problems. My original departure from CLT was 5:28 pm but due to the delay of the inbound flight, after arrival, deplaning, cleaning, boarding, we did not push back from the gate until 9:00 pm. Once in the air, the flight was smooth and what was originally supposed to be an arrival in ORD at 7:30 pm local time turned out to be 9:35 pm.

The flight I was supposed to be on was supposed to take off at 1:50 from State College. It was delayed over and over and over again until somehow I had to rebook on a flight that was supposed to have left State College at 8 am that morning but didn't end up taking off until almost 6 pm. Not only was this completely unacceptable, the "token from United" was a 15 dollar meal voucher that has to be used by today. I would personally like some miles added to my account for this inconvenience. I was in transit for 8 hours from the time I arrive at State College Aiport to when I got home. I was supposed to be home at 3 pm and I returned at 8 pm. Unacceptable. I have not been on an on Time united flight in nearly 5 years.

newer aircraft, ability to connect my headset via blue tooth for entertainment.

Very comfortable flight, snacks and drinks were good, good communication from crew. Could have used a little more information on timing of boarding for group 5

Great flight. Got to watch a movie. Smooth flight and early arrival at ORD.

It was better than excellent. The staff in Mason City were great. The young woman that pushed my wheelchair did more than could be expected of her. She came from India 17 years ago. I don't remember her name.

After arriving in Chicago, we were taxiing for 1.5 hours with infrequent and untruthful updates about the amount of time it would take to arrive at the gate. Minimally, the team could have provided timing expectations that were more truthful, especially one their original expectations were not met.

It was good, the staff was great, and the food, was as usual, tea and biscuit. Bathroom was clean, and the plane was clean as well.

Very good I can’t complain one bit. Thank you American Airlines for making my flight enjoyable and safe!

The staff and service on American Airlines were truly outstanding. I had requested wheelchair assistance for my mother due to her knee issues, and the team went above and beyond every step of the way—from boarding in Boston to our arrival in Chicago. Their care, professionalism, and attentiveness made the entire experience smooth and stress-free. I’m very grateful for the support they provided.

The new planes (American Eagle) are beautiful and especially comfortable. The flight attendants are consistently professional and courteous. And, while it may seem inconsequential, the new liquid tube of coffee creamer—in contrast to the powdered coffee creamer—makes all the difference in a cup of coffee.

Boarding was quick and efficient. We arrived at our destination early.

I'm not sure American is capable of on-time arrivals and departures. When you land at ORD, you almost always get held on the tarmac because your gate is still occupied. I may have missed my connection, but that ended up up being significantly delayed as well. Once again, I finally got home well after midnight.

Crew at the gate was very crabby and not at all polite. The plane was very hot the entire flight. And the seat cushion was very worn out.

The staff are very, very professional. It's what flying should feel like.

Flight was delayed half hour before boarding, but when I checked flight aware the plane that would Pick us up had a delay of more than an hour. AA should let us know in advance to avoid waiting several hours in the airport

Delays with no explanation. It could have been handled better.

Plane was hot and miserable and the crew was rude!

12 hour delay required getting on and off plane 3 times - would have at least liked to have been offered a snack or drink

They didn’t offer a water, even after I asked

They switched our terminal 3 times and we were delayed for four plus hours!!!

It was an early flight and most people napped/slept and the crew let us which was nice.

The crew acted like they had never done this and kept barking passive aggressive orders at people. + the security line + the delay + sitting on the tarmac for 2 hours + none of the apps or signage updating with correct times

More inflight connection. And leg space is horrible. And the paying for baggage I'd ridiculous!!!

My flight was originally from SAT to MCO connecting from MCO to ORD. We got diverted to ATL and than Frontier staff there was sooo un helpful first they said they couldn’t give us any accommodation since our flight first got delayed that cancelled and now it’s 221am and I am still in ATL since they said they need to create a new flight my final destination is ORD and I have been delayed twice and cancelled. With no real help the frontier app didn’t work no email updates over all such a horrible experience

There's no seats that lean back with little leg space i wad uncomfortable the entire flight. Your charges for extra baggage is despicable and costly!!

Remind customers of the need to have passport or new ID for boarding.

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

Information on your arrival and departure airports