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$64+ 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 1/30. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — AUS
Jan 22 — Jan 291
Wed 1/22
Wed 1/29
1 adult, Economy
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Cheap flight deals from Illinois to Austin

Discover tips and strategies to find the most affordable flight options for your journey from Illinois (USIL) to Austin (AUS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 17, 2025.

Round-trip from

$140
(Booking.com)

One-way from

$64
(Trip.com)
From Illinois to Austin Bergstrom
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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 January 17, 2025.

This Booking.com deal was found by Cheapflights users on 1/16. 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.
Fri 2/287:09 pmSTL - AUS
1 stop28h 23mFrontier
Sun 3/26:10 amAUS - STL
1 stop27h 06mFrontier
Deal found 1/16$140
This CheapOair deal was found by Cheapflights users on 1/16. 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.
Wed 2/197:04 pmSTL - AUS
1 stop28h 28mMultiple Airlines
Mon 2/248:19 pmAUS - STL
1 stop18h 23mMultiple Airlines
Deal found 1/16$165
This FlightHub deal was found by Cheapflights users on 1/16. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/234:00 pmSTL - AUS
1 stop27h 24mSpirit Airlines
Wed 2/266:39 pmAUS - STL
1 stop20h 03mSpirit Airlines
Deal found 1/16$179
This American Airlines deal was found by Cheapflights users on 1/16. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/73:28 pmMLI - AUS
1 stop5h 58mAmerican Airlines
Tue 2/119:45 amAUS - MLI
1 stop5h 11mAmerican Airlines
Deal found 1/16$224
This American Airlines deal was found by Cheapflights users on 1/16. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/154:40 pmPIA - AUS
1 stop7h 08mAmerican Airlines
Fri 2/211:41 pmAUS - PIA
1 stop8h 28mAmerican Airlines
Deal found 1/16$224
This Southwest deal was found by Cheapflights users on 1/16. 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 3/42:25 pmMDW - AUS
Nonstop2h 50mSouthwest
Wed 3/266:50 amAUS - MDW
Nonstop2h 30mSouthwest
Deal found 1/16$257
This United Airlines deal was found by Cheapflights users on 1/15. 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 3/49:30 amORD - AUS
Nonstop3h 06mUnited Airlines
Wed 3/267:00 amAUS - ORD
Nonstop2h 46mUnited Airlines
Deal found 1/15$257
This FlightHub deal was found by Cheapflights users on 1/15. 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.
Sun 1/197:15 amMDW - AUS
1 stop12h 11mFrontier
Tue 2/186:10 amAUS - MDW
1 stop18h 07mFrontier
Deal found 1/15$258
This Mytrip deal was found by Cheapflights users on 1/15. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/64:02 pmORD - AUS
2 stops20h 28mSpirit Airlines
Sun 3/910:06 pmAUS - ORD
1 stop15h 33mSpirit Airlines
Deal found 1/15$258
This Frontier deal was found by Cheapflights users on 1/15. 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 1/207:50 amORD - AUS
1 stop11h 33mFrontier
Sat 2/156:10 amAUS - ORD
1 stop11h 15mFrontier
Deal found 1/15$259
This American Airlines deal was found by Cheapflights users on 1/16. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/131:24 pmORD - AUS
Nonstop2h 56mAmerican Airlines
Thu 2/136:02 pmAUS - ORD
1 stop5h 51mAmerican Airlines
Deal found 1/16$262
This Delta deal was found by Cheapflights users on 1/16. 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.
Sat 2/85:05 pmMLI - AUS
1 stop7h 30mDelta
Sat 2/158:25 amAUS - MLI
1 stop8h 00mDelta
Deal found 1/16$268

Find flights from Illinois to Austin within your budget

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 January 17, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

St. LouisAustin

STL - AUS

STLAUS

Lambert-St Louis

Fri 2/28

7:09 pm-11:32 pm

1 stop28h 23m

Austin Bergstrom

Sun 3/2

6:10 am-9:16 am

1 stop27h 06m

$140

St. LouisAustin

STL - AUS

STLAUS

Lambert-St Louis

Wed 2/19

7:04 pm-11:32 pm

1 stop28h 28m

Austin Bergstrom

Mon 2/24

8:19 pm-2:42 pm

1 stop18h 23m

$165

St. LouisAustin

STL - AUS

STLAUS

Lambert-St Louis

Sun 2/23

4:00 pm-7:24 pm

1 stop27h 24m

Austin Bergstrom

Wed 2/26

6:39 pm-2:42 pm

1 stop20h 03m

$179

MolineAustin

MLI - AUS

MLIAUS

Moline Quad-City

Fri 2/7

3:28 pm-9:26 pm

1 stop5h 58m

Austin Bergstrom

Tue 2/11

9:45 am-2:56 pm

1 stop5h 11m

$224

PeoriaAustin

PIA - AUS

PIAAUS

Greater Peoria

Sat 2/15

4:40 pm-11:48 pm

1 stop7h 08m

Austin Bergstrom

Fri 2/21

1:41 pm-10:09 pm

1 stop8h 28m

$224

ChicagoAustin

MDW - AUS

MDWAUS

Chicago Midway

Tue 3/4

8:30 am-11:25 am

Nonstop2h 55m

Austin Bergstrom

Tue 3/25

6:50 am-9:20 am

Nonstop2h 30m

$257

ChicagoAustin

ORD - AUS

ORDAUS

Chicago O'Hare Intl

Tue 3/4

5:42 pm-8:30 pm

Nonstop2h 48m

Austin Bergstrom

Tue 3/25

6:05 am-8:49 am

Nonstop2h 44m

$257

ChicagoAustin

ORD - AUS

ORDAUS

Chicago O'Hare Intl

Wed 2/5

3:56 pm-4:44 pm

2 stops24h 48m

Austin Bergstrom

Fri 2/7

8:26 pm-11:20 am

2 stops14h 54m

$258

ChicagoAustin

ORD - AUS

ORDAUS

Chicago O'Hare Intl

Mon 1/27

7:50 am-7:23 pm

1 stop11h 33m

Austin Bergstrom

Wed 1/29

4:14 pm-2:02 pm

1 stop21h 48m

$259

ChicagoAustin

MDW - AUS

MDWAUS

Chicago Midway

Thu 3/13

6:40 am-11:32 pm

1 stop16h 52m

Austin Bergstrom

Sun 3/16

3:24 pm-11:06 pm

1 stop7h 42m

$260

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/16

Showing 1-10 of 57 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.

Travel insights for flights from Illinois to Austin

Get recent, data-driven insights about flights from Illinois to Austin including ideal travel times, pricing trends, and more.

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 January 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 January 17, 2025.

The most flights from USIL to AUS are scheduled on a Monday (26 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (11 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 January 17, 2025.
To help decide which airline to fly from Illinois to Austin, see what other customers have to say about Alaska Airlines, Delta and Frontier. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,659 reviews

Food

7.2

Entertainment

7.7

Crew

8.7

Boarding

8.2

Overall

8.1

Comfort

8.1

Reviews

1 / 10

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

Southwest
8.1
Very good
4,659 reviews
Southwest
8.1
Very good
4,659 reviews

Food

7.2

Entertainment

7.7

Crew

8.7

Boarding

8.2

Overall

8.1

Comfort

8.1

Reviews

1 / 10

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

Alaska Airlines
8.0
Very good
9,681 reviews
Southwest
8.1
Very good
4,659 reviews

Food

7.2

Entertainment

7.7

Crew

8.7

Boarding

8.2

Overall

8.1

Comfort

8.1

Reviews

1 / 10

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

Delta
8.0
Very good
8,511 reviews
Southwest
8.1
Very good
4,659 reviews

Food

7.2

Entertainment

7.7

Crew

8.7

Boarding

8.2

Overall

8.1

Comfort

8.1

Reviews

1 / 10

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

JetBlue
7.4
Good
3,199 reviews
Southwest
8.1
Very good
4,659 reviews

Food

7.2

Entertainment

7.7

Crew

8.7

Boarding

8.2

Overall

8.1

Comfort

8.1

Reviews

1 / 10

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

United Airlines
7.4
Good
8,965 reviews
Southwest
8.1
Very good
4,659 reviews

Food

7.2

Entertainment

7.7

Crew

8.7

Boarding

8.2

Overall

8.1

Comfort

8.1

Reviews

1 / 10

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

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?

    $64 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on Spirit Airlines and American Airlines, with prices starting from $95 and $100, 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%), Royal Jordanian (87%), Lufthansa (82%).

  • What are the cheapest flights from Illinois to Austin?

    Looking for the cheapest flight from Illinois to Austin? While on average our users pay $614, our data indicates the cheapest price to be $129. The most popular route (Chicago O'Hare Intl - Austin Bergstrom), is priced around $126.

  • 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
Seguin
Georgetown
Fredericksburg
Cedar Park
Pflugerville
Bastrop
Canyon Lake
Round Rock
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 January 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$112Average$196FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$153Average$246FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$173Average$385FlexibilityNo cancel feeOn-time71%
DeltaCheapest$177Average$432FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$211Average$424FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$219Average$372FlexibilityNo cancel feeOn-time63%
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