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$54+ 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 9/5. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — AUS
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 June 12, 2025.

Round-trip from

$163
(FlightHub)

One-way from

$54
(FlightHub)

Popular in

December

Cheapest in

April

Average price

$313

Good round-trip deal

$189 or less

Good one-way deal

$116 or less
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. 10% potential increase in price ($38 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
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Average for round-trip flights in June 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 June 12, 2025.

This FlightHub deal was found by Cheapflights users on 6/12. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/228:44 amSTL - AUS
1 stop6h 52mSpirit Airlines
Thu 9/254:31 pmAUS - STL
1 stop15h 18mSpirit Airlines
Deal found 6/12$163
This Cheapflightsfares deal was found by Cheapflights users on 6/12. 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.
Thu 8/142:54 pmORD - AUS
Nonstop2h 50mFrontier
Sun 8/176:48 pmAUS - ORD
Nonstop2h 54mFrontier
Deal found 6/12$166
This Southwest deal was found by Cheapflights users on 6/10. 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.
Thu 8/78:05 amMDW - AUS
Nonstop2h 35mSouthwest
Thu 8/76:50 pmAUS - MDW
1 stop5h 00mSouthwest
Deal found 6/10$167
This Southwest deal was found by Cheapflights users on 6/10. 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.
Thu 8/75:45 pmORD - AUS
1 stop5h 00mSouthwest
Mon 8/1110:20 amAUS - ORD
Nonstop2h 45mSouthwest
Deal found 6/10$167
This United Airlines deal was found by Cheapflights users on 6/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/158:50 amORD - AUS
Nonstop2h 54mUnited Airlines
Wed 7/1612:50 pmAUS - ORD
Nonstop2h 53mUnited Airlines
Deal found 6/10$169
This American Airlines deal was found by Cheapflights users on 6/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/169:14 pmORD - AUS
Nonstop2h 44mAmerican Airlines
Wed 7/236:33 pmAUS - ORD
Nonstop2h 51mAmerican Airlines
Deal found 6/11$170
This Cheapflightsfares deal was found by Cheapflights users on 6/12. 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.
Thu 9/187:39 pmORD - AUS
1 stop11h 44mSpirit Airlines
Sun 9/219:50 amAUS - ORD
1 stop7h 47mSpirit Airlines
Deal found 6/12$182
This American Airlines deal was found by Cheapflights users on 6/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/15:30 amMLI - AUS
1 stop6h 08mAmerican Airlines
Wed 10/83:15 pmAUS - MLI
1 stop5h 24mAmerican Airlines
Deal found 6/10$191
This Southwest deal was found by Cheapflights users on 6/10. 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.
Thu 9/111:50 pmSTL - AUS
Nonstop2h 00mSouthwest
Mon 9/154:35 pmAUS - STL
Nonstop2h 05mSouthwest
Deal found 6/10$197
This Kiwi.com deal was found by Cheapflights users on 6/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/33:12 pmORD - AUS
Nonstop2h 49mMultiple Airlines
Sat 7/511:55 amAUS - ORD
1 stop8h 28mMultiple Airlines
Deal found 6/11$203
This Delta deal was found by Cheapflights users on 6/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/266:00 amMDW - AUS
1 stop4h 59mDelta
Sat 8/210:35 amAUS - MDW
1 stop5h 02mDelta
Deal found 6/11$217
This Delta deal was found by Cheapflights users on 6/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/92:00 pmORD - AUS
1 stop8h 09mDelta
Sat 7/195:25 amAUS - ORD
1 stop4h 51mDelta
Deal found 6/11$217

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 June 12, 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

ORD - AUS

ORDAUS

Chicago O'Hare Intl

Thu 8/14

2:54 pm-5:44 pm

Nonstop2h 50m

Austin Bergstrom

Sun 8/17

6:48 pm-9:42 pm

Nonstop2h 54m

$166

ChicagoAustin

MDW - AUS

MDWAUS

Chicago Midway

Thu 8/7

8:05 am-10:40 am

Nonstop2h 35m

Austin Bergstrom

Thu 8/7

6:50 pm-11:50 pm

1 stop5h 00m

$167

ChicagoAustin

ORD - AUS

ORDAUS

Chicago O'Hare Intl

Thu 8/7

5:45 pm-10:45 pm

1 stop5h 00m

Austin Bergstrom

Mon 8/11

10:20 am-1:05 pm

Nonstop2h 45m

$167

ChicagoAustin

ORD - AUS

ORDAUS

Chicago O'Hare Intl

Tue 7/15

8:50 am-11:44 am

Nonstop2h 54m

Austin Bergstrom

Wed 7/16

12:50 pm-3:43 pm

Nonstop2h 53m

$169

ChicagoAustin

ORD - AUS

ORDAUS

Chicago O'Hare Intl

Wed 7/16

9:14 pm-11:58 pm

Nonstop2h 44m

Austin Bergstrom

Wed 7/23

6:33 pm-9:24 pm

Nonstop2h 51m

$170

ChicagoAustin

ORD - AUS

ORDAUS

Chicago O'Hare Intl

Thu 9/18

7:39 pm-7:23 am

1 stop11h 44m

Austin Bergstrom

Sun 9/21

9:50 am-8:40 pm

1 stop10h 50m

$182

MolineAustin

MLI - AUS

MLIAUS

Moline Quad-City

Wed 10/1

5:30 am-11:38 am

1 stop6h 08m

Austin Bergstrom

Wed 10/8

3:15 pm-8:39 pm

1 stop5h 24m

$191

ChicagoAustin

ORD - AUS

ORDAUS

Chicago O'Hare Intl

Thu 7/3

3:12 pm-6:01 pm

Nonstop2h 49m

Austin Bergstrom

Sat 7/5

11:55 am-8:23 pm

1 stop8h 28m

$203

St. LouisAustin

STL - AUS

STLAUS

Lambert-St Louis

Tue 8/12

6:10 am-12:45 pm

1 stop6h 35m

Austin Bergstrom

Thu 8/14

5:05 am-7:10 am

Nonstop2h 05m

$207

ChicagoAustin

MDW - AUS

MDWAUS

Chicago Midway

Sat 7/26

6:00 am-1:47 pm

1 stop7h 47m

Austin Bergstrom

Tue 7/29

3:00 pm-9:42 pm

1 stop6h 42m

$217

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

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, January is the cheapest month in which you can book a flight from Illinois to Austin (average of $286). 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 June 12, 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 June 12, 2025.

The most flights from USIL to AUS are scheduled on a Thursday (39 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (13 on average).

Rainfall in Austin by month

Plan your trip to Austin by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Austin ranges from 2.1 - 4.2 inches per month. May is typically the wettest month, when rainfall can reach 4.2 in. July is typically the driest time to visit Austin when rainfall is around 2.1 in.

Temperature in Austin by month

Plan your trip to Austin by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Austin, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 50.0 F).

Reviews of airlines servicing Austin

Get insights into the airlines that provide service to Austin. 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 Austin. Reviews last updated June 12, 2025.
To help decide which airline to fly from Illinois to Austin, see what other customers have to say about Alaska Airlines, Southwest and Delta. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,287 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,946 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Allegiant Air
7.3
Good
725 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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.

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

    $54 is the cheapest one-way deal found within the past few days, from Spirit Airlines. You may also be able to find cheap deals on Southwest and United Airlines, with prices starting from $85 and $85, 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: SkyWest Airlines (100%), Envoy Air (82%), United Airlines (81%).

  • What are the cheapest flights from Illinois to Austin?

    Looking for the cheapest flight from Illinois to Austin? While on average our users pay $299, our data indicates the cheapest price to be $67. The most popular route (Chicago O'Hare Intl - Austin Bergstrom), is priced around $157.

  • 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, January is the cheapest month in which you can book a flight from Illinois to Austin (average of $286). 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 Illinois?

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

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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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$69Average$180FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$144Average$275FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$176Average$375FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$177Average$351FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$198Average$387FlexibilityNo cancel feeOn-time69%
DeltaCheapest$216Average$288FlexibilityNo cancel feeOn-timeN/A

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