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$89+ 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 5/20. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — AUS
Apr 22 — Apr 291
Tue 4/22
Tue 4/29
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 April 17, 2025.

Most accurate provider

Mytrip
3 stars

Most trusted provider

Mytrip
3 stars

Round-trip from

$146
(Gotogate)

One-way from

$89
(Southwest)

Popular in

December

Cheapest in

April

Average price

$277

Good round-trip deal

$205 or less

Good one-way deal

$112 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
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($26 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 April 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 April 17, 2025.

This Gotogate deal was found by Cheapflights users on 4/16. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/307:15 amORD - AUS
Nonstop2h 52mMultiple Airlines
Mon 6/28:11 pmAUS - ORD
1 stop9h 14mMultiple Airlines
Deal found 4/16$146
This Frontier deal was found by Cheapflights users on 4/16. 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 5/1512:40 pmORD - AUS
Nonstop2h 52mFrontier
Mon 5/191:22 pmAUS - ORD
Nonstop2h 47mFrontier
Deal found 4/16$151
This Cheapflightsfares deal was found by Cheapflights users on 4/16. 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.
Sat 5/33:08 pmORD - AUS
1 stop9h 44mSpirit Airlines
Wed 5/78:11 pmAUS - ORD
1 stop14h 44mSpirit Airlines
Deal found 4/16$162
This Southwest deal was found by Cheapflights users on 4/16. 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 5/278:25 amMDW - AUS
Nonstop2h 45mSouthwest
Wed 5/282:50 pmAUS - MDW
Nonstop2h 35mSouthwest
Deal found 4/16$169
This American Airlines deal was found by Cheapflights users on 4/17. 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.
Sat 6/77:05 pmORD - AUS
Nonstop2h 51mAmerican Airlines
Sat 6/143:00 pmAUS - ORD
Nonstop2h 49mAmerican Airlines
Deal found 4/17$169
This CheapOair deal was found by Cheapflights users on 4/16. 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.
Sun 5/186:15 amMDW - AUS
1 stop10h 17mFrontier
Sat 5/245:08 pmAUS - MDW
1 stop21h 52mFrontier
Deal found 4/16$191
This United Airlines deal was found by Cheapflights users on 4/17. 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 5/2012:47 pmORD - AUS
Nonstop3h 00mUnited Airlines
Wed 5/285:16 pmAUS - ORD
Nonstop2h 54mUnited Airlines
Deal found 4/17$193
This Southwest deal was found by Cheapflights users on 4/16. 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.
Fri 6/134:20 pmORD - AUS
Nonstop2h 40mSouthwest
Mon 6/1610:00 amAUS - ORD
Nonstop2h 45mSouthwest
Deal found 4/16$197
This Booking.com deal was found by Cheapflights users on 4/16. 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 5/159:55 pmSTL - AUS
1 stop18h 08mFrontier
Sun 5/188:15 pmAUS - STL
1 stop27h 51mFrontier
Deal found 4/16$208
This Southwest deal was found by Cheapflights users on 4/17. 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 5/1410:35 amSTL - AUS
Nonstop2h 10mSouthwest
Mon 5/194:25 pmAUS - STL
Nonstop2h 10mSouthwest
Deal found 4/17$211
This Delta deal was found by Cheapflights users on 4/16. 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.
Fri 5/304:15 pmMDW - AUS
1 stop6h 46mDelta
Mon 6/210:40 amAUS - MDW
1 stop6h 56mDelta
Deal found 4/16$217
This Delta deal was found by Cheapflights users on 4/17. 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.
Thu 5/87:06 pmSTL - AUS
1 stop5h 14mDelta
Tue 5/135:40 amAUS - STL
1 stop6h 24mDelta
Deal found 4/17$221

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 April 17, 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

Fri 5/30

7:15 am-10:07 am

Nonstop2h 52m

Austin Bergstrom

Mon 6/2

8:11 pm-5:25 am

1 stop9h 14m

$146

ChicagoAustin

ORD - AUS

ORDAUS

Chicago O'Hare Intl

Thu 5/15

12:40 pm-3:32 pm

Nonstop2h 52m

Austin Bergstrom

Mon 5/19

1:22 pm-4:09 pm

Nonstop2h 47m

$151

ChicagoAustin

ORD - AUS

ORDAUS

Chicago O'Hare Intl

Sat 5/3

3:08 pm-12:52 am

1 stop9h 44m

Austin Bergstrom

Wed 5/7

8:11 pm-10:55 am

1 stop14h 44m

$162

ChicagoAustin

MDW - AUS

MDWAUS

Chicago Midway

Tue 5/27

2:50 pm-5:30 pm

Nonstop2h 40m

Austin Bergstrom

Tue 5/27

7:45 pm-10:15 pm

Nonstop2h 30m

$169

ChicagoAustin

ORD - AUS

ORDAUS

Chicago O'Hare Intl

Sat 6/7

7:05 pm-9:56 pm

Nonstop2h 51m

Austin Bergstrom

Sat 6/14

3:00 pm-5:49 pm

Nonstop2h 49m

$169

ChicagoAustin

MDW - AUS

MDWAUS

Chicago Midway

Sun 5/18

6:15 am-4:32 pm

1 stop10h 17m

Austin Bergstrom

Sat 5/24

5:08 pm-3:00 pm

1 stop21h 52m

$191

ChicagoAustin

ORD - AUS

ORDAUS

Chicago O'Hare Intl

Tue 5/20

12:47 pm-3:47 pm

Nonstop3h 00m

Austin Bergstrom

Wed 5/28

5:16 pm-8:10 pm

Nonstop2h 54m

$193

ChicagoAustin

ORD - AUS

ORDAUS

Chicago O'Hare Intl

Fri 6/13

4:20 pm-7:00 pm

Nonstop2h 40m

Austin Bergstrom

Mon 6/16

10:00 am-12:45 pm

Nonstop2h 45m

$197

St. LouisAustin

STL - AUS

STLAUS

Lambert-St Louis

Thu 5/15

9:55 pm-4:03 pm

1 stop18h 08m

Austin Bergstrom

Sun 5/18

8:15 pm-12:06 am

1 stop27h 51m

$208

St. LouisAustin

STL - AUS

STLAUS

Lambert-St Louis

Wed 5/14

10:35 am-12:45 pm

Nonstop2h 10m

Austin Bergstrom

Mon 5/19

4:25 pm-6:35 pm

Nonstop2h 10m

$211

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/16

Showing 1-10 of 59 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 April 17, 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 April 17, 2025.

The most flights from USIL to AUS are scheduled on a Wednesday (37 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (12 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 April 17, 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
9,882 reviews

Food

7.1

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

7.1

Comfort

7.9

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Alaska Airlines
8.0
Very good
9,882 reviews
Alaska Airlines
8.0
Very good
9,882 reviews

Food

7.1

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

7.1

Comfort

7.9

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Southwest
8.0
Very good
4,280 reviews
Alaska Airlines
8.0
Very good
9,882 reviews

Food

7.1

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

7.1

Comfort

7.9

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Delta
8.0
Very good
7,917 reviews
Alaska Airlines
8.0
Very good
9,882 reviews

Food

7.1

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

7.1

Comfort

7.9

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
United Airlines
7.4
Good
8,667 reviews
Alaska Airlines
8.0
Very good
9,882 reviews

Food

7.1

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

7.1

Comfort

7.9

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Allegiant Air
7.3
Good
734 reviews
Alaska Airlines
8.0
Very good
9,882 reviews

Food

7.1

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

7.1

Comfort

7.9

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

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?

    $89 is the cheapest one-way deal found within the past few days, from Southwest. You may also be able to find cheap deals on American Airlines and Spirit Airlines, with prices starting from $89 and $89, 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%), United Airlines (90%), Lufthansa (89%).

  • What are the cheapest flights from Illinois to Austin?

    Looking for the cheapest flight from Illinois to Austin? While on average our users pay $559, our data indicates the cheapest price to be $76. The most popular route (Chicago O'Hare Intl - Austin Bergstrom), is priced around $118.

  • 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
Seguin
Round Rock
Dripping Springs
Cedar Park
Pflugerville
Bastrop
Canyon Lake
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 April 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$61Average$200FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$144Average$273FlexibilityNo cancel feeOn-time65%
SouthwestCheapest$177Average$363FlexibilityNo cancel feeOn-time63%
DeltaCheapest$177Average$365FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$188Average$383FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$214Average$388FlexibilityNo cancel feeOn-time69%

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