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Illinois

$65+ 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 1/7. Fares are subject to change and may not be available on all flights or dates of travel.
AUS — ORD
Dec 23 — Dec 301
Mon 12/23
Mon 12/30
1 adult, Economy
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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 December 18, 2024.

Round-trip from

$118
(CheapOair)

One-way from

$65
(FlightHub)
From Austin Bergstrom to Illinois
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One-way flight from Austin Bergstrom to Illinois
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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 December 18, 2024.

This United Airlines deal was found by Cheapflights users on 12/17. 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 12/245:35 pmAUS - ORD
Nonstop2h 49mUnited Airlines
Tue 1/78:02 pmORD - AUS
Nonstop3h 04mUnited Airlines
Deal found 12/17$297
This FlightHub deal was found by Cheapflights users on 12/17. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/248:00 amAUS - ORD
1 stop6h 36mMultiple Airlines
Fri 1/248:25 pmORD - AUS
1 stop18h 40mMultiple Airlines
Deal found 12/17$316
This CheapOair deal was found by Cheapflights users on 12/17. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/255:19 pmAUS - ORD
1 stop6h 27mFrontier
Tue 12/316:55 amORD - AUS
1 stop14h 45mFrontier
Deal found 12/17$318
This Delta deal was found by Cheapflights users on 12/17. 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.
Wed 12/184:39 pmAUS - MLI
1 stop6h 22mDelta
Mon 1/65:05 pmMLI - AUS
1 stop7h 30mDelta
Deal found 12/17$323
This American Airlines deal was found by Cheapflights users on 12/17. 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.
Wed 12/256:45 amAUS - ORD
Nonstop2h 45mAmerican Airlines
Sun 2/28:50 pmORD - AUS
Nonstop3h 06mAmerican Airlines
Deal found 12/17$331
This Cheapflightsfares deal was found by Cheapflights users on 12/18. 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.
Tue 12/248:00 amAUS - ORD
1 stop6h 36mSpirit Airlines
Wed 1/812:09 pmORD - AUS
1 stop7h 13mSpirit Airlines
Deal found 12/18$341
This CheapOair deal was found by Cheapflights users on 12/17. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/245:47 pmAUS - MDW
1 stop27h 45mFrontier
Mon 12/308:41 pmMDW - AUS
1 stop20h 06mFrontier
Deal found 12/17$348
This Southwest deal was found by Cheapflights users on 12/16. 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 12/316:35 pmAUS - MDW
Nonstop2h 30mSouthwest
Sat 1/119:15 amMDW - AUS
Nonstop2h 55mSouthwest
Deal found 12/16$353
This Gotogate deal was found by Cheapflights users on 12/17. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/1810:57 pmAUS - STL
1 stop12h 13mFrontier
Mon 12/306:49 pmSTL - AUS
1 stop26h 51mFrontier
Deal found 12/17$376
This American Airlines deal was found by Cheapflights users on 12/16. 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 12/2610:00 amAUS - STL
1 stop6h 39mAmerican Airlines
Wed 1/15:21 amSTL - AUS
1 stop3h 55mAmerican Airlines
Deal found 12/16$403
This Southwest deal was found by Cheapflights users on 12/16. 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.
Thu 12/263:50 pmAUS - STL
1 stop4h 25mSouthwest
Wed 1/18:20 pmSTL - AUS
Nonstop2h 10mSouthwest
Deal found 12/16$420
This Southwest deal was found by Cheapflights users on 12/17. 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.
Tue 12/242:00 pmAUS - ORD
2 stops9h 05mSouthwest
Fri 1/247:30 amORD - AUS
1 stop7h 10mSouthwest
Deal found 12/17$425

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 December 18, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

AustinSt. Louis

AUS - STL

AUSSTL

Austin Bergstrom

Sat 3/1

5:32 pm-10:08 pm

1 stop28h 36m

Lambert-St Louis

Tue 3/4

6:26 pm-4:21 pm

1 stop21h 55m

$118

AustinSt. Louis

AUS - STL

AUSSTL

Austin Bergstrom

Mon 2/24

5:00 am-8:44 am

1 stop3h 44m

Lambert-St Louis

Sat 3/1

3:43 pm-9:06 pm

1 stop5h 23m

$168

AustinSt. Louis

AUS - STL

AUSSTL

Austin Bergstrom

Tue 2/4

4:14 pm-9:16 am

1 stop17h 02m

Lambert-St Louis

Tue 2/11

3:48 pm-5:29 pm

1 stop25h 41m

$186

AustinPeoria

AUS - PIA

AUSPIA

Austin Bergstrom

Wed 1/8

1:42 pm-10:04 pm

1 stop8h 22m

Greater Peoria

Sat 1/11

5:00 am-1:49 pm

1 stop8h 49m

$248

AustinChicago

AUS - ORD

AUSORD

Austin Bergstrom

Thu 1/16

8:23 pm-12:32 am

1 stop28h 09m

Chicago O'Hare Intl

Sun 1/19

8:30 am-7:31 pm

1 stop11h 01m

$259

AustinChicago

AUS - ORD

AUSORD

Austin Bergstrom

Wed 1/15

6:05 am-8:50 am

Nonstop2h 45m

Chicago O'Hare Intl

Tue 1/21

8:50 pm-11:56 pm

Nonstop3h 06m

$260

AustinSt. Louis

AUS - STL

AUSSTL

Austin Bergstrom

Thu 1/16

6:40 am-8:40 am

Nonstop2h 00m

Lambert-St Louis

Mon 1/20

5:50 pm-8:05 pm

Nonstop2h 15m

$262

AustinChicago

AUS - ORD

AUSORD

Austin Bergstrom

Thu 3/13

6:34 pm-12:23 am

1 stop5h 49m

Chicago O'Hare Intl

Mon 3/17

7:59 pm-4:21 pm

1 stop20h 22m

$262

AustinChicago

AUS - ORD

AUSORD

Austin Bergstrom

Thu 2/13

5:59 am-9:50 pm

1 stop15h 51m

Chicago O'Hare Intl

Mon 2/24

8:52 pm-5:29 pm

3 stops20h 37m

$266

AustinChicago

AUS - MDW

AUSMDW

Austin Bergstrom

Thu 1/16

9:33 pm-11:44 am

1 stop14h 11m

Chicago Midway

Fri 1/24

12:51 pm-7:41 pm

1 stop6h 50m

$266

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/16

Showing 1-10 of 54 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 Illinois including ideal travel times, pricing trends, and more.

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

Currently, September is the cheapest month in which you can book a flight from Austin to Illinois (average of $232). Flying from Austin to Illinois in June is currently the most expensive (average of $308). 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 AUS to IL?

Find hourly flight availability from Austin to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 18, 2024.

When flying from Austin to Illinois, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Illinois by month

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

In terms of precipitation, rainfall in Illinois ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Illinois when rainfall is around 1.7 in.

Temperature in Illinois by month

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

If weather is an important factor for your trip to Illinois, 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 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

Reviews of airlines servicing Illinois

Get insights into the airlines that provide service to Illinois. 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 Illinois. Reviews last updated December 18, 2024.
See what other customers who have flown with Frontier, Spirit Airlines and American Airlines from Austin to Illinois have to say. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,848 reviews

Food

7.2

Entertainment

7.7

Crew

8.7

Overall

8.1

Boarding

8.2

Comfort

8.1

Reviews

1 / 10

Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.

Southwest
8.1
Very good
4,848 reviews
Southwest
8.1
Very good
4,848 reviews

Food

7.2

Entertainment

7.7

Crew

8.7

Overall

8.1

Boarding

8.2

Comfort

8.1

Reviews

1 / 10

Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.

Alaska Airlines
8.0
Very good
9,552 reviews
Southwest
8.1
Very good
4,848 reviews

Food

7.2

Entertainment

7.7

Crew

8.7

Overall

8.1

Boarding

8.2

Comfort

8.1

Reviews

1 / 10

Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.

Delta
8.0
Very good
8,604 reviews
Southwest
8.1
Very good
4,848 reviews

Food

7.2

Entertainment

7.7

Crew

8.7

Overall

8.1

Boarding

8.2

Comfort

8.1

Reviews

1 / 10

Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.

United Airlines
7.4
Good
9,059 reviews
Southwest
8.1
Very good
4,848 reviews

Food

7.2

Entertainment

7.7

Crew

8.7

Overall

8.1

Boarding

8.2

Comfort

8.1

Reviews

1 / 10

Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.

Allegiant Air
7.4
Good
829 reviews
Southwest
8.1
Very good
4,848 reviews

Food

7.2

Entertainment

7.7

Crew

8.7

Overall

8.1

Boarding

8.2

Comfort

8.1

Reviews

1 / 10

Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.

Related info for your journey

Find useful and relevant information for your journey from Austin to Illinois. 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 from for flights from Austin to Illinois?

    Austin Bergstrom (AUS), located 7.5 mi from the city center, is the airport you fly out of when you book flights from Austin to Illinois.

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

    One-way options have recently been found by users for as low as $65 on Frontier. Other airlines that offer cheap prices include American Airlines from $84 and Spirit Airlines from $121 one-way.

  • What are the most popular routes from Austin to Illinois?

    Most travelers choose Austin Bergstrom - Chicago O'Hare Intl, Austin Bergstrom - Chicago Midway or Austin Bergstrom - Lambert-St Louis when deciding on the best route from Austin to Illinois.

  • What are the most reliable airlines from Austin to Illinois?

    Consider SkyWest Airlines (100%), Japan Airlines (98%) or Envoy Air (96%) when booking your flight. These represent the most reliable airlines when flying from Austin to Illinois.

  • What are the cheapest flights from Austin to Illinois?

    Looking for the cheapest flight from Austin to Illinois? While on average our users pay $1,257, our data indicates the cheapest price to be $139. The most popular route (Austin Bergstrom - Chicago O'Hare Intl), is priced around $141.

  • Can I find deals for flights from Austin to Illinois that include hotel bookings?

    Yes. In addition to deals on Austin to Illinois flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Austin to Illinois?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Austin to Illinois.

  • Can I find deals for business class flights from Austin to Illinois?

    Yes. Cheapflights offers flight deals from Austin to Illinois 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 Austin to Illinois?

    Currently, September is the cheapest month in which you can book a flight from Austin to Illinois (average of $232). Flying from Austin to Illinois in June is currently the most expensive (average of $308). 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

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Alternative routes for Austin to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
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Top 6 airlines flying from Austin to Illinois

Discover the top 6 airlines that operate flights from Austin to Illinois. 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 December 18, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$113Average$190FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$120Average$382FlexibilityNo cancel feeOn-time63%
Spirit AirlinesCheapest$163Average$288FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$177Average$409FlexibilityNo cancel feeOn-time71%
DeltaCheapest$207Average$498FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$218Average$396FlexibilityNo cancel feeOn-time69%
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