Illinois

$60+ Cheap flights from Austin (AUS) to Illinois

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 4/1. Fares are subject to change and may not be available on all flights or dates of travel.
AUS — ORD
Feb 16 — Feb 231
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Find cheap flights from Austin to Illinois with Cheapflights

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Cheap flight deals from Austin to Illinois

Discover tips and strategies to find the most affordable flight options for your journey from Austin (AUS) to Illinois (USIL). 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 February 11, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$115
(CheapOair)

One-way from

$60
(Trip.com)

Popular in

December

Cheapest in

April

Average price

$357

Good round-trip deal

$288 or less

Good one-way deal

$169 or less
Provider with most accurate pricing for Austin Bergstrom-Chicago (CHI) flight deals.
Provider most trusted by Cheapflights users for Austin Bergstrom-Chicago (CHI) flights.
From Austin Bergstrom to Illinois
One-way flight from Austin Bergstrom to Illinois
Highest demand for flights based on searches. 6% potential increase in price ($23 potential increase over avg. RT price).
Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
Average for round-trip flights in February 2025
Price to beat on a round-trip flight from Austin Bergstrom to Illinois.
Price to beat on a one-way flight from Austin Bergstrom to Illinois.

Find flight deals from Austin to Illinois

Cheapest flights from Austin to Illinois
Explore the most affordable flight options available from Austin to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 11, 2025.

This CheapOair deal was found by Cheapflights users on 2/11. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/128:35 pmAUS - STL
1 stop14h 47mFrontier
Wed 4/166:51 pmSTL - AUS
1 stop28h 42mFrontier
Deal found 2/11$115
This Frontier deal was found by Cheapflights users on 2/10. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/712:12 pmAUS - ORD
1 stop12h 32mFrontier
Tue 3/252:33 pmORD - AUS
Nonstop3h 01mFrontier
Deal found 2/10$142
This Booking.com deal was found by Cheapflights users on 2/10. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/910:51 pmAUS - MDW
1 stop30h 40mFrontier
Wed 3/126:40 amMDW - AUS
1 stop16h 52mFrontier
Deal found 2/10$143
This CheapOair deal was found by Cheapflights users on 2/10. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/285:58 amAUS - ORD
1 stop15h 03mMultiple Airlines
Tue 3/46:50 amORD - AUS
1 stop16h 42mMultiple Airlines
Deal found 2/10$143
This Mytrip deal was found by Cheapflights users on 2/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/45:58 amAUS - ORD
3 stops26h 23mSpirit Airlines
Wed 3/52:42 pmORD - AUS
1 stop8h 11mSpirit Airlines
Deal found 2/10$161
This Southwest deal was found by Cheapflights users on 2/10. 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 5/16:30 amAUS - MDW
Nonstop2h 30mSouthwest
Thu 5/19:05 pmMDW - AUS
Nonstop2h 40mSouthwest
Deal found 2/10$177
This CheapOair deal was found by Cheapflights users on 2/10. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/198:35 pmAUS - STL
1 stop14h 47mMultiple Airlines
Tue 4/226:47 pmSTL - AUS
1 stop15h 40mMultiple Airlines
Deal found 2/10$193
This United Airlines deal was found by Cheapflights users on 2/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/265:05 amAUS - ORD
1 stop6h 18mUnited Airlines
Wed 3/264:00 pmORD - AUS
1 stop6h 45mUnited Airlines
Deal found 2/11$197
This Delta deal was found by Cheapflights users on 2/11. 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.
Tue 3/115:30 amAUS - STL
1 stop6h 30mDelta
Tue 3/187:10 amSTL - AUS
1 stop6h 00mDelta
Deal found 2/11$197
This Southwest deal was found by Cheapflights users on 2/10. 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 5/13:55 pmAUS - ORD
1 stop7h 10mSouthwest
Tue 5/67:30 amORD - AUS
2 stops8h 40mSouthwest
Deal found 2/10$202
This United Airlines deal was found by Cheapflights users on 2/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/115:05 amAUS - STL
2 stops7h 07mUnited Airlines
Tue 3/184:29 pmSTL - AUS
1 stop6h 16mUnited Airlines
Deal found 2/11$202
This Southwest deal was found by Cheapflights users on 2/11. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/135:00 amAUS - STL
Nonstop2h 00mSouthwest
Mon 3/176:55 pmSTL - AUS
Nonstop2h 15mSouthwest
Deal found 2/11$210

Find flights from Austin to Illinois within your budget

Customize your flight search to find flights from Austin to Illinois 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 February 11, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

AustinSt. Louis

AUS - STL

AUSSTL

Austin Bergstrom

Wed 3/5

5:11 pm-5:45 pm

1 stop24h 34m

Lambert-St Louis

Mon 3/10

6:58 pm-11:32 pm

1 stop28h 34m

$115

AustinChicago

AUS - ORD

AUSORD

Austin Bergstrom

Fri 3/7

12:12 pm-12:44 am

1 stop12h 32m

Chicago O'Hare Intl

Tue 3/25

2:33 pm-5:34 pm

Nonstop3h 01m

$142

AustinChicago

AUS - ORD

AUSORD

Austin Bergstrom

Fri 2/28

5:58 am-9:01 pm

1 stop15h 03m

Chicago O'Hare Intl

Tue 3/4

6:50 am-11:32 pm

1 stop16h 42m

$143

AustinChicago

AUS - MDW

AUSMDW

Austin Bergstrom

Sun 3/9

10:51 pm-5:31 am

1 stop30h 40m

Chicago Midway

Wed 3/12

6:40 am-11:32 pm

1 stop16h 52m

$143

AustinChicago

AUS - ORD

AUSORD

Austin Bergstrom

Tue 3/4

5:58 am-8:21 am

3 stops26h 23m

Chicago O'Hare Intl

Wed 3/5

2:42 pm-10:53 pm

1 stop8h 11m

$161

AustinChicago

AUS - MDW

AUSMDW

Austin Bergstrom

Thu 5/1

6:30 am-9:00 am

Nonstop2h 30m

Chicago Midway

Thu 5/1

9:05 pm-11:45 pm

Nonstop2h 40m

$177

AustinChicago

AUS - ORD

AUSORD

Austin Bergstrom

Thu 4/17

6:00 am-8:45 am

Nonstop2h 45m

Chicago O'Hare Intl

Tue 4/22

7:59 pm-11:03 pm

Nonstop3h 04m

$177

AustinSt. Louis

AUS - STL

AUSSTL

Austin Bergstrom

Sat 4/19

8:35 pm-11:22 am

1 stop14h 47m

Lambert-St Louis

Tue 4/22

6:47 pm-10:27 am

1 stop15h 40m

$193

AustinChicago

AUS - ORD

AUSORD

Austin Bergstrom

Wed 3/26

7:00 am-9:46 am

Nonstop2h 46m

Chicago O'Hare Intl

Sat 3/29

1:25 pm-4:31 pm

Nonstop3h 06m

$197

AustinSt. Louis

AUS - STL

AUSSTL

Austin Bergstrom

Wed 3/19

5:40 pm-11:03 pm

1 stop5h 23m

Lambert-St Louis

Wed 3/26

10:19 am-3:50 pm

1 stop5h 31m

$197

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/10

Showing 1-10 of 55 results
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Best time to book a flight from Austin to Illinois

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

Get recent, data-driven insights about flights from Austin to Illino