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$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 4/24. Fares are subject to change and may not be available on all flights or dates of travel.
AUS — ORD
Jan 25 — Feb 11
Sat 1/25
Sat 2/1
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 January 20, 2025.

Round-trip from

$120
(CheapOair)

One-way from

$60
(Trip.com)
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 January 20, 2025.

This CheapOair deal was found by Cheapflights users on 1/20. 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.
Thu 4/109:47 amAUS - STL
1 stop13h 59mFrontier
Mon 4/144:57 pmSTL - AUS
1 stop15h 45mFrontier
Deal found 1/20$120
This American Airlines deal was found by Cheapflights users on 1/20. 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.
Tue 2/44:45 pmAUS - PIA
1 stop4h 36mAmerican Airlines
Sat 2/83:33 pmPIA - AUS
1 stop5h 53mAmerican Airlines
Deal found 1/20$199
This American Airlines deal was found by Cheapflights users on 1/19. 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.
Tue 2/118:20 amAUS - MLI
1 stop7h 43mAmerican Airlines
Tue 2/183:26 pmMLI - AUS
1 stop7h 21mAmerican Airlines
Deal found 1/19$199
This CheapOair deal was found by Cheapflights users on 1/19. 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 5/78:32 amAUS - ORD
1 stop14h 20mMultiple Airlines
Mon 5/125:25 pmORD - AUS
1 stop5h 55mMultiple Airlines
Deal found 1/19$204
This Frontier deal was found by Cheapflights users on 1/19. 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.
Tue 4/156:29 pmAUS - MDW
1 stop5h 52mFrontier
Sun 4/206:40 amMDW - AUS
1 stop6h 18mFrontier
Deal found 1/19$205
This Cheapflightsfares deal was found by Cheapflights users on 1/20. 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.
Fri 5/161:22 pmAUS - ORD
Nonstop2h 49mFrontier
Mon 5/199:40 amORD - AUS
Nonstop2h 52mFrontier
Deal found 1/20$205
This Cheapflightsfares deal was found by Cheapflights users on 1/19. 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.
Thu 2/135:58 amAUS - ORD
1 stop15h 52mSpirit Airlines
Sun 2/161:32 pmORD - AUS
1 stop15h 03mSpirit Airlines
Deal found 1/19$212
This CheapOair deal was found by Cheapflights users on 1/20. 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.
Mon 2/38:26 pmAUS - STL
1 stop18h 17mMultiple Airlines
Fri 2/77:09 pmSTL - AUS
1 stop21h 21mMultiple Airlines
Deal found 1/20$215
This Delta deal was found by Cheapflights users on 1/19. 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 4/22:40 pmAUS - ORD
1 stop6h 04mDelta
Tue 4/85:00 pmORD - AUS
1 stop5h 53mDelta
Deal found 1/19$217
This Southwest deal was found by Cheapflights users on 1/20. 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 2/203:35 pmAUS - MDW
Nonstop2h 30mSouthwest
Tue 3/254:30 pmMDW - AUS
Nonstop2h 50mSouthwest
Deal found 1/20$257
This American Airlines deal was found by Cheapflights users on 1/19. 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 3/56:09 amAUS - ORD
Nonstop2h 38mAmerican Airlines
Wed 3/125:28 pmORD - AUS
Nonstop2h 54mAmerican Airlines
Deal found 1/19$258
This United Airlines deal was found by Cheapflights users on 1/19. 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 4/212:45 pmAUS - ORD
Nonstop2h 51mUnited Airlines
Tue 4/87:56 pmORD - AUS
Nonstop3h 04mUnited Airlines
Deal found 1/19$267

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 January 20, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

AustinSt. Louis

AUS - STL

AUSSTL

Austin Bergstrom

Thu 4/10

9:47 am-11:46 pm

1 stop13h 59m

Lambert-St Louis

Mon 4/14

4:57 pm-8:42 am

1 stop15h 45m

$120

AustinPeoria

AUS - PIA

AUSPIA

Austin Bergstrom

Tue 2/4

4:45 pm-9:21 pm

1 stop4h 36m

Greater Peoria

Sat 2/8

3:33 pm-9:26 pm

1 stop5h 53m

$199

AustinMoline

AUS - MLI

AUSMLI

Austin Bergstrom

Tue 2/11

8:20 am-4:03 pm

1 stop7h 43m

Moline Quad-City

Tue 2/18

3:26 pm-10:47 pm

1 stop7h 21m

$199

AustinChicago

AUS - ORD

AUSORD

Austin Bergstrom

Wed 5/7

8:32 am-10:52 pm

1 stop14h 20m

Chicago O'Hare Intl

Mon 5/12

5:25 pm-11:20 pm

1 stop5h 55m

$204

AustinChicago

AUS - MDW

AUSMDW

Austin Bergstrom

Tue 4/15

6:29 pm-12:21 am

1 stop5h 52m

Chicago Midway

Sun 4/20

6:40 am-12:58 pm

1 stop6h 18m

$205

AustinChicago

AUS - ORD

AUSORD

Austin Bergstrom

Fri 5/16

1:22 pm-4:11 pm

Nonstop2h 49m

Chicago O'Hare Intl

Mon 5/19

9:40 am-12:32 pm

Nonstop2h 52m

$205

AustinChicago

AUS - ORD

AUSORD

Austin Bergstrom

Thu 1/30

7:14 pm-5:31 am

1 stop10h 17m

Chicago O'Hare Intl

Mon 2/17

1:32 pm-4:35 am

1 stop15h 03m

$209

AustinSt. Louis

AUS - STL

AUSSTL

Austin Bergstrom

Mon 2/3

8:26 pm-2:43 pm

1 stop18h 17m

Lambert-St Louis

Fri 2/7

7:09 pm-4:30 pm

1 stop21h 21m

$215

AustinChicago

AUS - MDW

AUSMDW

Austin Bergstrom

Tue 3/18

6:20 am-2:15 pm

1 stop7h 55m

Chicago Midway

Tue 3/25

10:25 am-3:56 pm

1 stop5h 31m

$217

AustinChicago

AUS - ORD

AUSORD

Austin Bergstrom

Tue 3/18

5:30 am-12:41 pm

1 stop7h 11m

Chicago O'Hare Intl

Tue 3/18

5:00 pm-11:03 pm

1 stop6h 03m

$217

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/20

Showing 1-10 of 51 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, August is the cheapest month in which you can book a flight from Austin to Illinois (average of $245). Flying from Austin to Illinois in March is currently the most expensive (average of $320). 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 January 20, 2025.

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.

Weekly flight availability from Austin to Illinois

Explore weekly flight availability from Austin to Illinois. 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 20, 2025.

The most flights from AUS to USIL are scheduled on a Monday (29 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (17 on average).

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 January 20, 2025.
See what other customers who have flown with Spirit Airlines, Delta and United 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
4,659 reviews

Boarding

8.2

Overall

8.1

Crew

8.7

Entertainment

7.7

Comfort

8.1

Food

7.2

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

Boarding

8.2

Overall

8.1

Crew

8.7

Entertainment

7.7

Comfort

8.1

Food

7.2

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
9,696 reviews
Southwest
8.1
Very good
4,659 reviews

Boarding

8.2

Overall

8.1

Crew

8.7

Entertainment

7.7

Comfort

8.1

Food

7.2

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
8,521 reviews
Southwest
8.1
Very good
4,659 reviews

Boarding

8.2

Overall

8.1

Crew

8.7

Entertainment

7.7

Comfort

8.1

Food

7.2

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
8,982 reviews
Southwest
8.1
Very good
4,659 reviews

Boarding

8.2

Overall

8.1

Crew

8.7

Entertainment

7.7

Comfort

8.1

Food

7.2

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
801 reviews
Southwest
8.1
Very good
4,659 reviews

Boarding

8.2

Overall

8.1

Crew

8.7

Entertainment

7.7

Comfort

8.1

Food

7.2

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 $60 on Frontier. Other airlines that offer cheap prices include Southwest from $99 and United Airlines from $99 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%), Qatar Airways (91%) or Aer Lingus (90%) 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 $1,172, our data indicates the cheapest price to be $148. The most popular route (Austin Bergstrom - Chicago O'Hare Intl), is priced around $137.

  • 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, August is the cheapest month in which you can book a flight from Austin to Illinois (average of $245). Flying from Austin to Illinois in March is currently the most expensive (average of $320). 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.

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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 January 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$118Average$182FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$120Average$384FlexibilityNo cancel feeOn-time63%
Spirit AirlinesCheapest$163Average$288FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$178Average$403FlexibilityNo cancel feeOn-time71%
DeltaCheapest$207Average$485FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$220Average$399FlexibilityNo cancel feeOn-time69%
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