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$68+ Cheap flights from Illinois to Austin (AUS)

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 10/23. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — AUS
Oct 25 — Nov 11
Sat 10/25
Sat 11/1
1 adult, Economy
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Cheap flight deals from Illinois to Austin

Keep the following information in mind while searching for Illinois to Austin flight deals. Data was last updated September 25, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$137
(Booking.com)

One-way from

$68
(Priceline)

Popular in

December

Cheapest in

July

Average price

$311

Good round-trip deal

$173 or less

Good one-way deal

$105 or less
Provider with most accurate pricing for Chicago (CHI)-Austin Bergstrom flight deals.
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Provider most trusted by Cheapflights users for Chicago (CHI)-Austin Bergstrom flights.
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From Illinois to Austin Bergstrom
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One-way flight from Illinois to Austin Bergstrom
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Highest demand for flights based on searches. 15% potential increase in price ($56 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 Illinois to Austin Bergstrom.
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Price to beat on a one-way flight from Illinois to Austin Bergstrom.
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Find flight deals from Illinois to Austin

Cheapest flights from Illinois to Austin
Explore the most affordable flight options available from Illinois to Austin. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 25, 2025.

This Booking.com deal was found by Cheapflights users on 9/25. 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.
Tue 10/77:15 amORD - AUS
1 stop17h 18mFrontier
Mon 10/1310:30 pmAUS - ORD
Nonstop2h 49mFrontier
Deal found 9/25$137
This Kiwi.com deal was found by Cheapflights users on 9/25. 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.
Mon 10/206:45 pmORD - AUS
Nonstop2h 50mFrontier
Mon 10/2710:30 pmAUS - ORD
Nonstop2h 49mFrontier
Deal found 9/25$139
This Southwest deal was found by Cheapflights users on 9/25. 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 11/118:15 amMDW - AUS
Nonstop2h 50mSouthwest
Wed 11/1211:40 amAUS - MDW
Nonstop2h 30mSouthwest
Deal found 9/25$141
This American Airlines deal was found by Cheapflights users on 9/24. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/118:45 pmORD - AUS
Nonstop3h 05mAmerican Airlines
Wed 11/126:00 amAUS - ORD
Nonstop2h 47mAmerican Airlines
Deal found 9/24$141
This CheapOair deal was found by Cheapflights users on 9/23. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/176:42 pmORD - AUS
Nonstop2h 50mFrontier
Fri 10/246:02 pmAUS - ORD
1 stop5h 37mFrontier
Deal found 9/23$142
This Frontier deal was found by Cheapflights users on 9/24. 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.
Mon 10/206:15 amMDW - AUS
1 stop10h 41mFrontier
Fri 10/246:02 pmAUS - MDW
1 stop5h 44mFrontier
Deal found 9/24$143
This Frontier deal was found by Cheapflights users on 9/23. 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.
Thu 10/235:05 amORD - AUS
1 stop11h 51mFrontier
Thu 10/3012:32 pmAUS - ORD
1 stop11h 07mFrontier
Deal found 9/23$143
This Frontier deal was found by Cheapflights users on 9/24. 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 10/316:20 amMDW - AUS
1 stop10h 38mFrontier
Mon 11/35:56 pmAUS - MDW
1 stop17h 42mFrontier
Deal found 9/24$144
This Kiwi.com deal was found by Cheapflights users on 9/24. 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.
Sat 10/1811:55 amORD - AUS
1 stop9h 50mMultiple Airlines
Mon 10/2710:30 pmAUS - ORD
Nonstop2h 49mMultiple Airlines
Deal found 9/24$144
This CheapOair deal was found by Cheapflights users on 9/24. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/209:44 amMDW - AUS
1 stop7h 12mFrontier
Thu 10/234:48 pmAUS - MDW
1 stop7h 48mFrontier
Deal found 9/24$145
This CheapOair deal was found by Cheapflights users on 9/24. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/235:05 amORD - AUS
1 stop11h 51mFrontier
Tue 10/287:45 amAUS - ORD
1 stop16h 27mFrontier
Deal found 9/24$145
This Booking.com deal was found by Cheapflights users on 9/24. 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 10/245:05 amORD - AUS
1 stop12h 02mFrontier
Mon 10/276:00 amAUS - ORD
1 stop18h 59mFrontier
Deal found 9/24$146

Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois to Austin 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 25, 2025.
Use the filters below to find and compare flights from Illinois to Austin that are best for you.

Fly from

Illinois

Fly to

Austin

Route

Depart

Return

Price

ChicagoAustin

MDW - AUS

MDWAUS

Chicago Midway

Mon 11/10

12:30 pm-12:32 am

1 stop12h 02m

Austin Bergstrom

Sat 11/15

7:45 am-11:30 am

1 stop27h 45m

$148

St. LouisAustin

STL - AUS

STLAUS

Lambert-St Louis

Tue 10/21

7:52 pm-12:33 am

1 stop28h 41m

Austin Bergstrom

Tue 10/28

7:45 am-9:07 am

1 stop25h 22m

$154

ChicagoAustin

MDW - AUS

MDWAUS

Chicago Midway

Sun 10/26

11:57 am-2:11 pm

1 stop26h 14m

Austin Bergstrom

Fri 11/7

6:10 pm-10:26 am

1 stop16h 16m

$164

St. LouisAustin

STL - AUS

STLAUS

Lambert-St Louis

Wed 10/15

7:52 pm-12:33 am

1 stop28h 41m

Austin Bergstrom

Sun 10/19

6:00 am-9:07 am

1 stop27h 07m

$184

ChicagoAustin

MDW - AUS

MDWAUS

Chicago Midway

Sat 10/25

2:10 pm-4:50 pm

Nonstop2h 40m

Austin Bergstrom

Sat 11/1

6:20 pm-10:30 pm

1 stop4h 10m

$186

ChicagoAustin

MDW - AUS

MDWAUS

Chicago Midway

Sun 10/19

8:05 am-10:45 am

Nonstop2h 40m

Austin Bergstrom

Sat 10/25

6:20 am-8:55 am

Nonstop2h 35m

$199

ChicagoAustin

MDW - AUS

MDWAUS

Chicago Midway

Thu 11/13

5:55 am-8:40 am

Nonstop2h 45m

Austin Bergstrom

Thu 11/13

6:20 pm-8:50 pm

Nonstop2h 30m

$211

ChicagoAustin

MDW - AUS

MDWAUS

Chicago Midway

Wed 10/22

9:35 am-2:50 pm

1 stop5h 15m

Austin Bergstrom

Tue 10/28

10:43 am-4:09 pm

1 stop5h 26m

$217

ChicagoAustin

MDW - AUS

MDWAUS

Chicago Midway

Tue 10/21

9:35 am-2:50 pm

1 stop5h 15m

Austin Bergstrom

Tue 10/28

10:43 am-4:09 pm

1 stop5h 26m

$217

ChicagoAustin

ORD - AUS

ORDAUS

Chicago O'Hare Intl

Wed 10/22

5:20 am-11:05 am

1 stop5h 45m

Austin Bergstrom

Wed 10/22

5:00 pm-11:58 pm

1 stop6h 58m

$217

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/24

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

Have a flexible travel schedule? Discover the best time to fly to Austin from Illinois 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 Illinois to Austin

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

Currently, August is the cheapest month in which you can book a flight from Illinois to Austin (average of $285). Flying from Illinois to Austin in March is currently the most expensive (average of $362). 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 IL to AUS?

Find hourly flight availability from Illinois to Austin. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 25, 2025.

When flying from Illinois to Austin, 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 Illinois to Austin

Explore weekly flight availability from Illinois to Austin. 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 25, 2025.

The most flights from USIL to AUS are scheduled on a Monday (34 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (14 on average).

Related info for your journey

Find useful and relevant information for your journey from Illinois to Austin. 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 into for flights to Austin from Illinois?

    Austin Bergstrom (AUS) is the airport you will fly into if you book a flight from Illinois to Austin. It is only a 7.5 mi journey from Austin Bergstrom (AUS) to Austin’s city center.

  • How long is the flight from Illinois to Austin?

    There are many flights that can get you from Illinois to Austin in 2h 40m. Fly via Frontier, Southwest, or Delta to get the fastest option. Illinois and Austin are separated by a distance of 972 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    $74 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on Southwest and United Airlines, with prices starting from $81 and $81, respectively.

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

    While some choose either Chicago Midway - Austin Bergstrom or Lambert-St Louis - Austin Bergstrom, Chicago O'Hare Intl - Austin Bergstrom is the most popular route from Illinois to Austin.

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Illinois to Austin on time: Frontier (83%), Air Canada (81%), United Airlines (78%).

  • What are the cheapest flights from Illinois to Austin?

    Looking for the cheapest flight from Illinois to Austin? While on average our users pay $770, our data indicates the cheapest price to be $66. The most popular route (Chicago O'Hare Intl - Austin Bergstrom), is priced around $132.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Illinois to Austin 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 Illinois to Austin?

    Currently, August is the cheapest month in which you can book a flight from Illinois to Austin (average of $285). Flying from Illinois to Austin in March is currently the most expensive (average of $362). 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

Traveling to a place near Austin?

Book flights to Austin if you plan to visit one of these locations
Round Rock
San Marcos
Fredericksburg
Pflugerville
Dripping Springs
Georgetown
Cedar Park
Canyon Lake
Seguin
Horseshoe Bay

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Illinois to Austin

See prices for flight routes from nearby airports that may be better suited for you.
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Top 6 airlines flying from Illinois to Austin

Discover the top 6 airlines that operate flights from Illinois to Austin. 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 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$71Average$211FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$86Average$276FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$169Average$370FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$173Average$370FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$177Average$345FlexibilityNo cancel feeOn-time63%
DeltaCheapest$278Average$373FlexibilityNo cancel feeOn-timeN/A

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