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 $70 on American Airlines. Other airlines that offer cheap prices include Frontier from $79 and Southwest from $80 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 cheapest flights from Austin to Illinois?

Looking for the cheapest flight from Austin to Illinois? While on average our users pay $2,450, our data indicates the cheapest price to be $88. The most popular route (Austin Bergstrom - Chicago O'Hare Intl), is priced around $149.

What are the most reliable airlines from Austin to Illinois?

Consider Frontier (100%), Air Canada (92%) or Southwest (92%) when booking your flight. These represent the most reliable airlines when flying from Austin to Illinois.

What are the most popular airlines that fly from Austin to Illinois?

When booking a flight from Austin to Illinois, you may want to consider flying on American Airlines, Frontier or Spirit Airlines as they are the most popular for this route.

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

Travelers have found it’s best to book a flight 37 days in advance to save up to 168% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 37 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Austin to Illinois 1-2 weeks in advance for as low as $299, or $788 for flights within the next 24 hours.

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

Our data shows that April tends to be the cheapest month to fly to Illinois from Austin. Users have commonly found prices around $342 for the month, but tickets can be as low as $123. Due to multiple factors, prepare for potentially higher prices in December.

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.

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.

$70+ Save on Flights from Austin to Illinois

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Cheap flight deals from Austin to Illinois

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$129 (Kiwi.com)
One-way from	$70 (American Airlines)
Popular in	December
Cheapest in	April
Average price	$297
Good round-trip deal	$279 or less
Good one-way deal	$145 or less

Provider with most accurate pricing for Austin Bergstrom-Chicago (CHI) flight deals.

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Provider most trusted by Cheapflights users for Austin Bergstrom-Chicago (CHI) flights.

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From Austin Bergstrom to Illinois

Search Deals

One-way flight from Austin Bergstrom to Illinois

Search Deals

Highest demand for flights based on searches. 8% potential increase in price ($33 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in March 2025

Search Deals

Price to beat on a round-trip flight from Austin Bergstrom to Illinois.

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Price to beat on a 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 March 25, 2025.

Wed 4/303:19 pmAUS - STL

1 stop6h 05mAmerican Airlines

Sat 5/37:04 amSTL - AUS

1 stop4h 32mAmerican Airlines

Deal found 3/24

$148

Sat 4/1211:25 amAUS - ORD

1 stop7h 41mMultiple Airlines

Tue 4/152:31 pmORD - AUS

Nonstop2h 58mMultiple Airlines

Deal found 3/24

$149

Sat 4/1211:25 amAUS - ORD

1 stop7h 41mSpirit Airlines

Tue 4/155:36 amORD - AUS

1 stop12h 03mSpirit Airlines

Deal found 3/24

$151

Wed 7/910:49 amAUS - ORD

Nonstop2h 54mFrontier

Wed 7/237:15 amORD - AUS

Nonstop2h 50mFrontier

Deal found 3/23

$158

Wed 5/286:25 amAUS - MDW

Nonstop2h 30mSouthwest

Sat 5/318:25 pmMDW - AUS

Nonstop2h 40mSouthwest

Deal found 3/23

$159

Sat 7/196:00 amAUS - ORD

Nonstop2h 50mAmerican Airlines

Sat 7/269:00 pmORD - AUS

Nonstop2h 54mAmerican Airlines

Deal found 3/24

$159

Wed 5/287:43 pmAUS - ORD

1 stop4h 30mUnited Airlines

Sat 5/319:04 amORD - AUS

Nonstop2h 54mUnited Airlines

Deal found 3/23

$178

Tue 4/221:40 pmAUS - ORD

Nonstop2h 45mSouthwest

Tue 4/297:30 amORD - AUS

1 stop4h 10mSouthwest

Deal found 3/23

$183

Sat 5/175:05 amAUS - STL

2 stops7h 14mUnited Airlines

Tue 5/206:30 amSTL - AUS

1 stop5h 31mUnited Airlines

Deal found 3/23

$186

Tue 6/246:43 amAUS - STL

1 stop7h 55mDelta

Fri 6/277:04 pmSTL - AUS

1 stop5h 15mDelta

Deal found 3/24

$197

Tue 6/36:00 amAUS - MLI

1 stop4h 42mAmerican Airlines

Wed 6/116:34 pmMLI - AUS

1 stop5h 11mAmerican Airlines

Deal found 3/24

$199

Thu 4/175:00 amAUS - STL

Nonstop2h 05mSouthwest

Sat 4/198:45 pmSTL - AUS

Nonstop2h 05mSouthwest

Deal found 3/23

$210

Best flights from Austin to Illinois
Discover carefully curated flight deals from Austin to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 25, 2025.

Sat 4/1211:25 amAUS - ORD

1 stop7h 41mMultiple Airlines

Tue 4/152:31 pmORD - AUS

Nonstop2h 58mMultiple Airlines

Deal found 3/24

$129

Wed 4/303:19 pmAUS - STL

1 stop6h 05mAmerican Airlines

Sat 5/37:04 amSTL - AUS

1 stop4h 32mAmerican Airlines

Deal found 3/24

$148

Fri 5/91:22 pmAUS - ORD

Nonstop2h 47mFrontier

Mon 5/129:40 amORD - AUS

Nonstop2h 52mFrontier

Deal found 3/24

$149

Sat 4/1211:25 amAUS - ORD

1 stop7h 41mSpirit Airlines

Tue 4/155:36 amORD - AUS

1 stop12h 03mSpirit Airlines

Deal found 3/24

$151

Wed 5/286:25 amAUS - MDW

Nonstop2h 30mSouthwest

Sat 5/318:25 pmMDW - AUS

Nonstop2h 40mSouthwest

Deal found 3/23

$159

Sat 5/175:05 amAUS - STL

2 stops7h 14mUnited Airlines

Tue 5/206:30 amSTL - AUS

1 stop5h 31mUnited Airlines

Deal found 3/23

$186

Tue 6/246:43 amAUS - STL

1 stop7h 55mDelta

Fri 6/277:04 pmSTL - AUS

1 stop5h 15mDelta

Deal found 3/24

$197

Thu 5/2211:03 amAUS - RFD

1 stop26h 54mAllegiant Air

Wed 5/289:44 amRFD - AUS

1 stop22h 05mAllegiant Air

Deal found 3/24

$271

Wed 6/46:37 pmAUS - ORD

Nonstop2h 47mAmerican Airlines

Sat 6/78:25 amORD - AUS

Nonstop2h 39mAmerican Airlines

Deal found 3/24

$159

Wed 5/288:05 amAUS - ORD

1 stop5h 55mSouthwest

Sat 5/311:50 pmORD - AUS

Nonstop2h 50mSouthwest

Deal found 3/24

$178

Mon 4/1412:45 pmAUS - ORD

Nonstop2h 51mUnited Airlines

Sun 4/2012:48 pmORD - AUS

Nonstop3h 00mUnited Airlines

Deal found 3/24

$197

Thu 5/295:15 amAUS - ORD

1 stop7h 26mDelta

Mon 6/25:30 amORD - AUS

1 stop8h 08mDelta

Deal found 3/24

$217

Last-minute flights from Austin to Illinois
Discover last-minute flight deals from Austin to Illinois. Data last updated March 25, 2025 and is based on user searches.

Tue 4/11:58 pmAUS - ORD

Nonstop2h 46mMultiple Airlines

Tue 4/88:00 amORD - AUS

1 stop11h 31mMultiple Airlines

Deal found 3/23

$185

Tue 4/11:58 pmAUS - ORD

Nonstop2h 46mFrontier

Tue 4/82:31 pmORD - AUS

Nonstop2h 58mFrontier

Deal found 3/23

$198

Tue 4/16:29 pmAUS - MDW

1 stop5h 52mFrontier

Mon 4/77:25 amMDW - AUS

1 stop9h 27mFrontier

Deal found 3/23

$258

Tue 4/17:25 pmAUS - MDW

Nonstop2h 30mSouthwest

Wed 4/28:30 amMDW - AUS

Nonstop2h 55mSouthwest

Deal found 3/24

$317

Tue 4/111:25 amAUS - ORD

1 stop6h 03mDelta

Sun 4/66:15 amORD - AUS

1 stop5h 32mDelta

Deal found 3/23

$327

Tue 4/15:30 amAUS - MDW

1 stop7h 06mDelta

Tue 4/14:59 pmMDW - AUS

1 stop7h 39mDelta

Deal found 3/23

$337

Wed 4/26:05 amAUS - ORD

Nonstop2h 44mAmerican Airlines

Sun 4/61:44 pmORD - AUS

Nonstop2h 53mAmerican Airlines

Deal found 3/22

$307

Wed 4/212:45 pmAUS - ORD

Nonstop2h 51mUnited Airlines

Sun 4/67:10 amORD - AUS

Nonstop3h 02mUnited Airlines

Deal found 3/23

$377

Thu 4/38:26 pmAUS - ORD

1 stop10h 16mSpirit Airlines

Thu 4/175:36 amORD - AUS

1 stop12h 59mSpirit Airlines

Deal found 3/22

$204

Thu 4/39:30 amAUS - MLI

1 stop5h 24mAmerican Airlines

Sun 4/66:30 amMLI - AUS

1 stop6h 41mAmerican Airlines

Deal found 3/24

$309

Thu 4/34:30 pmAUS - ORD

1 stop5h 30mSouthwest

Mon 4/71:50 pmORD - AUS

2 stops7h 25mSouthwest

Deal found 3/24

$383

Fri 4/47:10 amAUS - MLI

2 stops9h 37mUnited Airlines

Sun 4/66:30 amMLI - AUS

2 stops8h 56mUnited Airlines

Deal found 3/24

$319

One-way flights from Austin to Illinois
Search for one-way flight options from Austin to Illinois. Find affordable one-way fares based on user searches. Data last updated March 25, 2025.

Tue 4/295:00 amAUS - STL

1 stop4h 01mAmerican Airlines

Deal found 3/24

$70

Wed 5/2811:27 amAUS - ORD

Nonstop2h 49mFrontier

Deal found 3/24

$79

Wed 5/286:25 amAUS - MDW

Nonstop2h 30mSouthwest

Deal found 3/24

$80

Tue 6/1010:09 amAUS - ORD

Nonstop2h 56mUnited Airlines

Deal found 3/24

$80

Mon 4/219:08 pmAUS - ORD

1 stop12h 16mSpirit Airlines

Deal found 3/23

$81

Fri 4/257:00 amAUS - STL

1 stop7h 42mUnited Airlines

Deal found 3/24

$91

Tue 4/296:40 amAUS - ORD

1 stop4h 05mSouthwest

Deal found 3/24

$94

Wed 5/284:15 pmAUS - STL

Nonstop2h 05mSouthwest

Deal found 3/24

$99

Fri 6/68:48 amAUS - MDW

1 stop5h 15mAllegiant Air

Deal found 3/23

$110

Mon 5/126:08 pmAUS - STL

1 stop5h 18mDelta

Deal found 3/24

$116

Mon 4/289:08 pmAUS - STL

1 stop20h 07mSpirit Airlines

Deal found 3/23

$118

Sun 4/205:30 amAUS - MDW

1 stop6h 33mDelta

Deal found 3/23

$119

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

AustinChicago

AUS - ORD

AUSORD

Austin Bergstrom

Sat 4/12

11:25 am-7:06 pm

1 stop7h 41m

Chicago O'Hare Intl

Tue 4/15

2:31 pm-5:29 pm

Nonstop2h 58m

$129

AustinSt. Louis

AUS - STL

AUSSTL

Austin Bergstrom

Wed 4/30

3:19 pm-9:24 pm

1 stop6h 05m

Lambert-St Louis

Sat 5/3

7:04 am-11:36 am

1 stop4h 32m

$148

AustinChicago

AUS - ORD

AUSORD

Austin Bergstrom

Fri 5/9

1:22 pm-4:09 pm

Nonstop2h 47m

Chicago O'Hare Intl

Mon 5/12

9:40 am-12:32 pm

Nonstop2h 52m

$149

AustinChicago

AUS - ORD

AUSORD

Austin Bergstrom

Fri 4/11

9:08 pm-9:24 am

1 stop12h 16m

Chicago O'Hare Intl

Tue 4/15

5:36 am-5:39 pm

1 stop12h 03m

$151

AustinChicago

AUS - MDW

AUSMDW

Austin Bergstrom

Wed 5/28

6:25 am-8:55 am

Nonstop2h 30m

Chicago Midway

Sat 5/31

8:25 pm-11:05 pm

Nonstop2h 40m

$159

AustinChicago

AUS - ORD

AUSORD

Austin Bergstrom

Wed 6/4

6:37 pm-9:24 pm

Nonstop2h 47m

Chicago O'Hare Intl

Sat 6/7

8:25 am-11:04 am

Nonstop2h 39m

$159

AustinChicago

AUS - ORD

AUSORD

Austin Bergstrom

Wed 5/28

7:43 pm-12:13 am

1 stop4h 30m

Chicago O'Hare Intl

Sat 5/31

9:04 am-11:58 am

Nonstop2h 54m

$178

AustinChicago

AUS - ORD

AUSORD

Austin Bergstrom

Tue 6/10

1:40 pm-4:25 pm

Nonstop2h 45m

Chicago O'Hare Intl

Sat 6/21

4:20 pm-12:05 am

1 stop7h 45m

$183

AustinSt. Louis

AUS - STL

AUSSTL

Austin Bergstrom

Sat 5/17

5:05 am-12:19 pm

2 stops7h 14m

Lambert-St Louis

Tue 5/20

6:30 am-12:01 pm

1 stop5h 31m

$186

AustinSt. Louis

AUS - STL

AUSSTL

Austin Bergstrom

Tue 6/24

6:43 am-2:38 pm

1 stop7h 55m

Lambert-St Louis

Fri 6/27

7:04 pm-12:19 am

1 stop5h 15m

$197

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/24

Showing 1-10 of 60 results

...

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.

Cheapflights Insights

Everything you need to know about your flight from Austin to Illinois

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 $323). 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?

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

The most flights from AUS to USIL are scheduled on a Friday (37 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (23 on average).

Rainfall in Illinois 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

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

See what other customers who have flown with Alaska Airlines, Southwest and Delta from Austin to Illinois have to say. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Alaska Airlines

8.0

Very good

9,785 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Alaska Airlines

8.0

Very good

9,785 reviews

Alaska Airlines

8.0

Very good

9,785 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Southwest

8.0

Very good

4,272 reviews

Alaska Airlines

8.0

Very good

9,785 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Delta

8.0

Very good

7,890 reviews

Alaska Airlines

8.0

Very good

9,785 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

United Airlines

7.4

Good

8,605 reviews

Alaska Airlines

8.0

Very good

9,785 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

American Airlines

7.2

Good

10,000 reviews

Alaska Airlines

8.0

Very good

9,785 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Related info for your journey

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 $70 on American Airlines. Other airlines that offer cheap prices include Frontier from $79 and Southwest from $80 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 Frontier (100%), Air Canada (92%) or Southwest (92%) 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 $2,450, our data indicates the cheapest price to be $88. The most popular route (Austin Bergstrom - Chicago O'Hare Intl), is priced around $149.
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 $323). 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

Browse thousands of different options on Cheapflights for your next trip

Top 6 airlines flying from Austin to Illinois

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$40	Average$175	FlexibilityNo cancel fee	On-time62%
Southwest	Cheapest$169	Average$368	FlexibilityNo cancel fee	On-time63%
American Airlines	Cheapest$183	Average$400	FlexibilityNo cancel fee	On-time71%
Delta	Cheapest$195	Average$346	FlexibilityNo cancel fee	On-timeN/A
Spirit Airlines	Cheapest$206	Average$299	FlexibilityNo cancel fee	On-time65%
United Airlines	Cheapest$211	Average$393	FlexibilityNo cancel fee	On-time69%

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$70+ 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 4/29. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Austin to Illinois with Cheapflights

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2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Austin to Illinois

Keep the following information in mind while searching for Austin to Illinois flight deals. Data was last updated March 25, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from Austin to Illinois

Cheapest flights from Austin to IllinoisExplore 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 March 25, 2025.

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 March 25, 2025.

Cheapflights Fare Finder

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

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.

Cheapflights Insights

Everything you need to know about your flight from Austin to Illinois

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

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 March 25, 2025.

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 March 25, 2025.

Rainfall in Illinois by month

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

Temperature in Illinois by month

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

Reviews of airlines servicing Illinois

See what other customers who have flown with Alaska Airlines, Southwest and Delta from Austin to Illinois have to say. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

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?

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

What are the most popular routes from Austin to Illinois?

What are the most reliable airlines from Austin to Illinois?

What are the cheapest flights from Austin to Illinois?

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

How can I find direct flights from Austin to Illinois?

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

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Austin to Illinois

See prices for flight routes from nearby airports that may be better suited for you.

Top 6 airlines flying from Austin to Illinois

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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 March 25, 2025.