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$59+ 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 5/26. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — AUS
maj 30 — jun 61
lör 5/30
lör 6/6
1 adult, Economy
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Cheap 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 30, 2026.

This Kiwi.com deal was found by Cheapflights users on 4/28. 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.
ons 5/278:08 pm
STL
-
AUS
1 stop13h 35m
Frontier
tis 6/25:47 pm
AUS
-
STL
1 stop15h 08m
Frontier
Deal found 4/28$137
This Kiwi.com deal was found by Cheapflights users on 4/26. 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.
tis 6/26:33 pm
STL
-
AUS
1 stop18h 31m
Frontier
tis 6/93:27 pm
AUS
-
STL
1 stop17h 20m
Frontier
Deal found 4/26$172
This Frontier deal was found by Cheapflights users on 4/29. 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.
tors 6/44:19 pm
STL
-
AUS
1 stop18h 31m
Frontier
mån 6/89:13 pm
AUS
-
STL
1 stop22h 10m
Frontier
Deal found 4/29$180
This Kiwi.com deal was found by Cheapflights users on 4/28. 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.
ons 6/105:06 pm
STL
-
AUS
1 stop23h 37m
Frontier
tis 6/168:15 pm
AUS
-
STL
1 stop23h 08m
Frontier
Deal found 4/28$184
This Kiwi.com deal was found by Cheapflights users on 4/26. 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.
mån 6/15:27 pm
STL
-
AUS
1 stop23h 25m
Frontier
mån 6/89:13 pm
AUS
-
STL
2 stops21h 11m
Frontier
Deal found 4/26$197
This Expedia deal was found by Cheapflights users on 4/26. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
tors 5/712:36 pm
STL
-
AUS
1 stop9h 11m
Frontier
mån 5/1111:30 am
AUS
-
STL
1 stop12h 51m
Frontier
Deal found 4/26$201
This Kiwi.com deal was found by Cheapflights users on 4/26. 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.
tis 6/21:50 pm
ORD
-
AUS
1 stop23h 14m
Frontier
tis 6/98:15 pm
AUS
-
ORD
2 stops23h 38m
Frontier
Deal found 4/26$207
This Kiwi.com deal was found by Cheapflights users on 4/26. 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.
mån 4/278:50 am
ORD
-
AUS
Nonstop3h 21m
Frontier
tis 5/269:13 pm
AUS
-
ORD
2 stops18h 27m
Frontier
Deal found 4/26$208
This Kiwi.com deal was found by Cheapflights users on 4/27. 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.
fre 5/84:48 pm
ORD
-
AUS
Nonstop3h 05m
Frontier
sön 5/109:13 pm
AUS
-
ORD
1 stop23h 19m
Frontier
Deal found 4/27$209
This Kiwi.com deal was found by Cheapflights users on 4/25. 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.
tors 5/289:37 pm
ORD
-
AUS
1 stop12h 06m
Frontier
tis 6/25:47 pm
AUS
-
ORD
1 stop14h 08m
Frontier
Deal found 4/25$210
This Expedia deal was found by Cheapflights users on 4/26. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
tis 5/57:15 am
ORD
-
AUS
1 stop9h 37m
Frontier
mån 5/118:48 pm
AUS
-
ORD
Nonstop2h 54m
Frontier
Deal found 4/26$211
This Kiwi.com deal was found by Cheapflights users on 4/25. 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.
ons 7/87:05 am
ORD
-
AUS
1 stop5h 33m
Frontier
lör 7/115:23 pm
AUS
-
ORD
1 stop29h 42m
Frontier
Deal found 4/25$212

Find 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 30, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$137
(Kiwi.com)

One-way from

$59
(Trip.com)

Popular in

March

Cheapest in

January

Average price

$307

Good round-trip deal

$309 or less

Good one-way deal

$172 or less
Provider with most accurate pricing for Chicago (CHI)-Austin Bergstrom flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago (CHI)-Austin Bergstrom flights.
Search Deals
From Illinois to Austin Bergstrom
Search Deals
One-way flight from Illinois to Austin Bergstrom
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($30 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals
Price to beat on a round-trip flight from Illinois to Austin Bergstrom.
Search Deals
Price to beat on a one-way flight from Illinois to Austin Bergstrom.
Search Deals

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 30, 2026.
Use the filters below to find and compare flights from Illinois to Austin that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

MolineAustin

MLI - AUS

MLIAUS

Moline Quad-City

fre 7/3

5:56 am-12:26 pm

1 stop6h 30m

Austin Bergstrom

lör 7/4

2:43 pm-8:09 pm

1 stop5h 26m

$231

ChicagoAustin

MDW - AUS

MDWAUS

Chicago Midway

lör 5/30

6:00 pm-8:45 pm

Nonstop2h 45m

Austin Bergstrom

ons 6/3

2:00 pm-4:35 pm

Nonstop2h 35m

$241
Quickest round-trip

St. LouisAustin

STL - AUS

STLAUS

Lambert-St Louis

tors 6/4

9:55 pm-11:55 pm

Nonstop2h 00m

Austin Bergstrom

mån 6/8

5:10 pm-7:15 pm

Nonstop2h 05m

$241

St. LouisAustin

STL - AUS

STLAUS

Lambert-St Louis

ons 6/3

6:00 am-1:43 pm

1 stop7h 43m

Austin Bergstrom

ons 6/10

6:25 am-12:34 pm

1 stop6h 09m

$241

St. LouisAustin

STL - AUS

STLAUS

Lambert-St Louis

ons 6/3

2:30 pm-4:40 pm

Nonstop2h 10m

Austin Bergstrom

fre 6/5

4:05 pm-9:55 pm

1 stop5h 50m

$255

ChicagoAustin

MDW - AUS

MDWAUS

Chicago Midway

tis 7/21

6:00 am-11:03 am

1 stop5h 03m

Austin Bergstrom

tis 7/21

4:55 pm-10:15 pm

1 stop5h 20m

$261

St. LouisAustin

STL - AUS

STLAUS

Lambert-St Louis

tis 6/2

7:05 am-12:26 pm

1 stop5h 21m

Austin Bergstrom

sön 6/7

8:15 am-2:52 pm

1 stop6h 37m

$265

St. LouisAustin

STL - AUS

STLAUS

Lambert-St Louis

ons 7/15

1:50 pm-3:50 pm

Nonstop2h 00m

Austin Bergstrom

ons 7/22

5:35 am-11:15 am

1 stop5h 40m

$269

ChicagoAustin

ORD - AUS

ORDAUS

Chicago O'Hare Intl

fre 6/5

8:55 am-11:56 am

Nonstop3h 01m

Austin Bergstrom

sön 6/7

6:40 am-9:39 am

Nonstop2h 59m

$271

ChicagoAustin

ORD - AUS

ORDAUS

Chicago O'Hare Intl

tors 6/18

6:45 am-9:30 am

Nonstop2h 45m

Austin Bergstrom

mån 6/22

3:37 pm-6:39 pm

Nonstop3h 02m

$271

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/25

Showing 1-10 of 60 resultsSorted by cheapest first
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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

How far ahead should I book a flight from Illinois to Austin?

The best time to book flights from Illinois to Austin is 82 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, December is the cheapest month in which you can book a flight from Illinois to Austin (average of $59). Flying from Illinois to Austin in November is currently the most expensive (average of $638). 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 30, 2026.

Unlike in the evening, when flights are generally more expensive, you can save up to 10% on flights from Illinois to Austin by exploring options for tickets in the afternoon.

What is the cheapest day to fly from Illinois to Austin?

Use this chart to determine the cheapest time to fly round-trip from Illinois to Austin. Price data was last updated on April 25, 2026.

Travelers seeking maximum savings on their Illinois to Austin flight should consider departing on Tuesday at noon when fares are most often at their lowest. Sunday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

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 30, 2026.

The most flights from USIL to AUS are scheduled on a Wednesday (34 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (13 on average).

How much does it cost to fly round-trip from Illinois to Austin?

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 45m. Fly via Delta, Southwest, or United Airlines 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?

    $40 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 $44 and $82, 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: Southwest (77%), ANA (76%), Japan Airlines (75%).

  • What are the cheapest flights from Illinois to Austin?

    Looking for the cheapest flight from Illinois to Austin? While on average our users pay $557, our data indicates the cheapest price to be $118. The most popular route (Chicago O'Hare Intl - Austin Bergstrom), is priced around $170.

  • 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, December is the cheapest month in which you can book a flight from Illinois to Austin (average of $59). Flying from Illinois to Austin in November is currently the most expensive (average of $638). 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
Cedar Park
Round Rock
San Marcos
Fredericksburg
Pflugerville
Georgetown
Bastrop
Dripping Springs
Seguin
Canyon Lake
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 5 airlines flying from Illinois to Austin

Discover the top 5 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 30, 2026.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$57Average$194FlexibilityNo cancel feeOn-time65%
FrontierCheapest$59Average$245FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$163Average$338FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$165Average$365FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$167Average$342FlexibilityNo cancel feeOn-time69%

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