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$60+ Cheap flights from Austin (AUS) to Illinois

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/11. Fares are subject to change and may not be available on all flights or dates of travel.
AUS — ORD
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap flight deals from Austin to Illinois

Keep the following information in mind while searching for Austin to Illinois flight deals. Data was last updated September 11, 2025.

Round-trip from

$148
(Kiwi.com)

One-way from

$60
(Expedia)

Popular in

December

Cheapest in

April

Average price

$288

Good round-trip deal

$253 or less

Good one-way deal

$135 or less
From Austin Bergstrom to Illinois
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One-way flight from Austin Bergstrom to Illinois
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Highest demand for flights based on searches. 17% potential increase in price ($64 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Austin Bergstrom to Illinois.
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Price to beat on a one-way flight from Austin Bergstrom to Illinois.
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Find flight deals from Austin to Illinois

Cheapest flights from Austin to Illinois
Explore the most affordable flight options available from Austin to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This Southwest deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/303:10 pmAUS - MDW
Nonstop2h 35mSouthwest
Tue 11/48:15 amMDW - AUS
Nonstop2h 50mSouthwest
Deal found 9/11$148
This Kiwi.com deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/2410:17 pmAUS - ORD
Nonstop2h 49mFrontier
Sat 10/257:43 pmORD - AUS
1 stop14h 46mFrontier
Deal found 9/9$148
This Southwest deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/72:40 pmAUS - MDW
Nonstop2h 35mSouthwest
Fri 10/109:35 pmMDW - AUS
Nonstop2h 40mSouthwest
Deal found 9/11$149
This Booking.com deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/226:00 amAUS - ORD
1 stop17h 53mFrontier
Wed 10/297:20 amORD - AUS
1 stop17h 12mFrontier
Deal found 9/10$149
This Booking.com deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/234:48 pmAUS - MDW
1 stop7h 48mFrontier
Sun 10/2611:57 amMDW - AUS
1 stop26h 14mFrontier
Deal found 9/10$150
This Booking.com deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/36:02 pmAUS - ORD
1 stop5h 37mFrontier
Sun 10/58:49 pmORD - AUS
1 stop20h 36mFrontier
Deal found 9/10$150
This Southwest deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/176:20 amAUS - MDW
Nonstop2h 30mSouthwest
Tue 1/64:25 pmMDW - AUS
1 stop4h 25mSouthwest
Deal found 9/9$151
This Cheapflightsfares deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/36:02 pmAUS - ORD
1 stop5h 37mFrontier
Mon 10/610:42 amORD - AUS
1 stop5h 52mFrontier
Deal found 9/11$151
This Southwest deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/181:55 pmAUS - MDW
1 stop5h 50mSouthwest
Sat 10/255:45 amMDW - AUS
1 stop4h 40mSouthwest
Deal found 9/10$153
This Frontier deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/265:29 pmAUS - ORD
1 stop6h 41mFrontier
Mon 9/295:10 amORD - AUS
1 stop11h 24mFrontier
Deal found 9/10$153
This Booking.com deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/246:02 pmAUS - MDW
1 stop5h 44mFrontier
Mon 10/2712:11 pmMDW - AUS
1 stop12h 22mFrontier
Deal found 9/9$154
This Kiwi.com deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/165:56 pmAUS - ORD
1 stop6h 15mMultiple Airlines
Wed 11/1910:49 amORD - AUS
1 stop9h 52mMultiple Airlines
Deal found 9/10$155

Cheapflights Fare Finder

 
Customize your flight search to find flights from Austin to Illinois that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 11, 2025.
Use the filters below to find and compare flights from Austin to Illinois that are best for you.

Fly from

Austin

Fly to

Illinois

Route

Depart

Return

Price

AustinChicago

AUS - MDW

AUSMDW

Austin Bergstrom

Sat 10/18

1:55 pm-7:45 pm

1 stop5h 50m

Chicago Midway

Sat 10/25

5:45 am-10:25 am

1 stop4h 40m

$153

AustinChicago

AUS - MDW

AUSMDW

Austin Bergstrom

Fri 10/24

6:00 pm-8:35 pm

Nonstop2h 35m

Chicago Midway

Sat 11/1

8:25 am-1:10 pm

1 stop4h 45m

$159

AustinChicago

AUS - MDW

AUSMDW

Austin Bergstrom

Fri 10/3

6:15 pm-8:50 pm

Nonstop2h 35m

Chicago Midway

Sat 10/4

5:15 am-11:00 am

1 stop5h 45m

$159

AustinChicago

AUS - MDW

AUSMDW

Austin Bergstrom

Thu 12/4

2:40 pm-5:15 pm

Nonstop2h 35m

Chicago Midway

Mon 12/8

8:20 pm-11:05 pm

Nonstop2h 45m

$165

AustinChicago

AUS - MDW

AUSMDW

Austin Bergstrom

Thu 10/16

9:55 pm-12:25 am

Nonstop2h 30m

Chicago Midway

Sat 10/18

7:25 pm-10:05 pm

Nonstop2h 40m

$167

AustinChicago

AUS - ORD

AUSORD

Austin Bergstrom

Sat 10/25

5:40 pm-11:05 pm

1 stop5h 25m

Chicago O'Hare Intl

Tue 10/28

4:20 pm-7:10 pm

Nonstop2h 50m

$172

AustinChicago

AUS - MDW

AUSMDW

Austin Bergstrom

Fri 10/3

6:15 pm-8:50 pm

Nonstop2h 35m

Chicago Midway

Mon 10/6

5:30 am-10:55 am

1 stop5h 25m

$175

AustinChicago

AUS - ORD

AUSORD

Austin Bergstrom

Sat 10/18

9:45 am-12:40 pm

Nonstop2h 55m

Chicago O'Hare Intl

Sat 10/25

7:10 am-1:16 pm

1 stop6h 06m

$176

AustinChicago

AUS - ORD

AUSORD

Austin Bergstrom

Sat 10/11

7:00 am-9:55 am

Nonstop2h 55m

Chicago O'Hare Intl

Sat 10/11

2:20 pm-7:24 pm

1 stop5h 04m

$176

AustinChicago

AUS - ORD

AUSORD

Austin Bergstrom

Tue 9/30

5:15 pm-8:10 pm

Nonstop2h 55m

Chicago O'Hare Intl

Wed 10/1

12:45 pm-5:30 pm

1 stop4h 45m

$176

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

Showing 1-10 of 60 results
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Best time to book a flight from Austin to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Austin with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

What is the cheapest month to book a flight from Austin to Illinois?

Currently, August is the cheapest month in which you can book a flight from Austin to Illinois (average of $245). Flying from Austin to Illinois in March is currently the most expensive (average of $321). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from AUS to IL?

Find hourly flight availability from Austin to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 11, 2025.

When flying from Austin to Illinois, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from Austin to Illinois

Explore weekly flight availability from Austin to Illinois. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated September 11, 2025.

The most flights from AUS to USIL are scheduled on a Monday (38 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (30 on average).

Reviews of airlines servicing Illinois

Get insights into the airlines that provide service to Illinois. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Illinois. Reviews last updated September 11, 2025.
Get a feel of what it's like to fly with Southwest, United Airlines, and American Airlines from Austin to Illinois by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

8.0

Food

7.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Southwest
8.0
Very good
4,248 reviews
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

8.0

Food

7.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
United Airlines
7.4
Good
8,937 reviews
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

8.0

Food

7.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

8.0

Food

7.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Spirit Airlines
6.3
Okay
8,023 reviews
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

8.0

Food

7.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Frontier
5.8
Fair
3,177 reviews
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

8.0

Food

7.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Related info for your journey

Find useful and relevant information for your journey from Austin to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Austin to Illinois?

    Austin Bergstrom (AUS), located 7.5 mi from the city center, is the airport you fly out of when you book flights from Austin to Illinois.

  • How long is the flight from Austin to Illinois?

    Airlines like Southwest, United Airlines, and American Airlines fly from Austin to Illinois in about 2h 55m. The time it takes to get you to your destination can typically vary by up to 2h 55m. Austin and Illinois are separated by a distance of 978 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Austin to Illinois one-way?

    One-way options have recently been found by users for as low as $77 on Southwest. Other airlines that offer cheap prices include Spirit Airlines from $80 and American Airlines from $155 one-way.

  • What are the most popular routes from Austin to Illinois?

    Most travelers choose Austin Bergstrom - Chicago O'Hare Intl, Austin Bergstrom - Chicago Midway or Austin Bergstrom - Lambert-St Louis when deciding on the best route from Austin to Illinois.

  • What are the most reliable airlines from Austin to Illinois?

    Consider Japan Airlines (87%), ANA (85%) or United Airlines (83%) when booking your flight. These represent the most reliable airlines when flying from Austin to Illinois.

  • What are the cheapest flights from Austin to Illinois?

    Looking for the cheapest flight from Austin to Illinois? While on average our users pay $844, our data indicates the cheapest price to be $69. The most popular route (Austin Bergstrom - Chicago O'Hare Intl), is priced around $112.

  • Can I find deals for flights from Austin to Illinois that include hotel bookings?

    Yes. In addition to deals on Austin to Illinois flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Austin to Illinois?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Austin to Illinois.

  • Can I find deals for business class flights from Austin to Illinois?

    Yes. Cheapflights offers flight deals from Austin to Illinois by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Austin to Illinois?

    Currently, August is the cheapest month in which you can book a flight from Austin to Illinois (average of $245). Flying from Austin to Illinois in March is currently the most expensive (average of $321). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Austin to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from Austin to Illinois

Discover the top 5 airlines that operate flights from Austin to Illinois. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$72Average$242FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$103Average$210FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$137Average$404FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$162Average$339FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$200Average$404FlexibilityNo cancel feeOn-time69%

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