How does KAYAK find such low prices on flights from Illinois to Austin?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Illinois to Austin.

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to Austin?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Austin from Illinois is likely to change within 7 days, so travelers know whether to wait or book now.

What is the Hacker Fare option on flights from Illinois to Austin?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Austin with an airline and back to Illinois with another airline.

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois to Austin?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Austin from Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

$81 CHEAP FLIGHTS from Illinois to Austin

Save 21% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Flight Deals

Cheap Flights from Illinois to Austin

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Direct

Recent round-trip flight deals from Illinois to Austin

Fri, Oct 2 - Tue, Oct 6

2:29 pm - 5:48 pmSTL Lambert-St Louis-AUS Austin Bergstrom

27h 19m1 stop Atlanta Hartsfield-Jackson

6:33 pm - 1:10 pmAUS Austin Bergstrom-STL Lambert-St Louis

18h 37m1 stop Atlanta Hartsfield-Jackson

$129Frontier

Wed, Oct 7 - Wed, Oct 14

12:17 pm - 11:23 amSTL Lambert-St Louis-AUS Austin Bergstrom

23h 06m1 stop Las Vegas Harry Reid Intl

12:08 pm - 5:40 pmAUS Austin Bergstrom-STL Lambert-St Louis

5h 32m1 stop Atlanta Hartsfield-Jackson

$166Frontier

Wed, Nov 4 - Wed, Nov 11

1:55 pm - 4:00 pmSTL Lambert-St Louis-AUS Austin Bergstrom

2h 05mnonstop

3:15 pm - 5:20 pmAUS Austin Bergstrom-STL Lambert-St Louis

2h 05mnonstop

$217Southwest

Thu, Oct 1 - Tue, Oct 6

9:45 pm - 11:50 pmSTL Lambert-St Louis-AUS Austin Bergstrom

2h 05mnonstop

7:30 am - 9:35 amAUS Austin Bergstrom-STL Lambert-St Louis

2h 05mnonstop

$217Southwest

Thu, Oct 8 - Thu, Oct 15

5:40 am - 9:32 amSTL Lambert-St Louis-AUS Austin Bergstrom

3h 52m1 stop Dallas/Fort Worth

6:00 am - 12:35 pmAUS Austin Bergstrom-STL Lambert-St Louis

6h 35m1 stop Chicago O'Hare Intl

$237American Airlines

Thu, Oct 1 - Mon, Oct 5

5:43 am - 9:46 amSTL Lambert-St Louis-AUS Austin Bergstrom

4h 03m1 stop Dallas/Fort Worth

5:00 am - 9:20 amAUS Austin Bergstrom-STL Lambert-St Louis

4h 20m1 stop Dallas/Fort Worth

$237American Airlines

Wed, Nov 4 - Wed, Dec 23

7:30 am - 2:02 pmSTL Lambert-St Louis-AUS Austin Bergstrom

6h 32m1 stop Chicago O'Hare Intl

5:35 pm - 10:30 pmAUS Austin Bergstrom-STL Lambert-St Louis

4h 55m1 stop Houston George Bush Intcntl

$248United Airlines

Wed, Dec 16 - Wed, Dec 23

2:50 pm - 9:06 pmSTL Lambert-St Louis-AUS Austin Bergstrom

6h 16m1 stop Denver Intl

5:35 pm - 10:30 pmAUS Austin Bergstrom-STL Lambert-St Louis

4h 55m1 stop Houston George Bush Intcntl

$248United Airlines

Wed, Jan 27 - Sun, Feb 21

6:00 am - 1:56 pmSTL Lambert-St Louis-AUS Austin Bergstrom

7h 56m1 stop Atlanta Hartsfield-Jackson

5:40 am - 10:48 amAUS Austin Bergstrom-STL Lambert-St Louis

5h 08m1 stop Atlanta Hartsfield-Jackson

$268Delta

Wed, Nov 4 - Sun, Nov 8

12:00 pm - 5:32 pmSTL Lambert-St Louis-AUS Austin Bergstrom

5h 32m1 stop Atlanta Hartsfield-Jackson

5:20 am - 10:55 amAUS Austin Bergstrom-STL Lambert-St Louis

5h 35m1 stop Atlanta Hartsfield-Jackson

$268Delta

Recent last minute flight deals from Illinois to Austin

Thu, Sep 17 - Wed, Sep 23

10:26 am - 5:48 pmORD Chicago O'Hare Intl-AUS Austin Bergstrom

7h 22m1 stop Atlanta Hartsfield-Jackson

10:58 am - 10:59 pmAUS Austin Bergstrom-ORD Chicago O'Hare Intl

12h 01m1 stop Orlando

$280Frontier

Wed, Sep 16 - Thu, Sep 24

6:20 am - 5:48 pmORD Chicago O'Hare Intl-AUS Austin Bergstrom

11h 28m1 stop Atlanta Hartsfield-Jackson

10:58 am - 10:59 pmAUS Austin Bergstrom-ORD Chicago O'Hare Intl

12h 01m1 stop Orlando

$280Frontier

Sat, Sep 19 - Sat, Oct 3

2:40 pm - 7:10 pmCMI Champaign University-Willard-AUS Austin Bergstrom

4h 30m1 stop Dallas/Fort Worth

3:28 pm - 8:56 pmAUS Austin Bergstrom-CMI Champaign University-Willard

5h 28m1 stop Chicago O'Hare Intl

$372American Airlines

Sat, Sep 19 - Sat, Oct 3

5:00 am - 11:54 amCMI Champaign University-Willard-AUS Austin Bergstrom

6h 54m2 stops Chicago O'Hare Intl Dallas/Fort Worth

7:00 am - 2:10 pmAUS Austin Bergstrom-CMI Champaign University-Willard

7h 10m1 stop Dallas/Fort Worth

$378American Airlines

Tue, Sep 15 - Mon, Sep 21

5:08 pm - 10:45 pmMLI Moline Quad-City-AUS Austin Bergstrom

5h 37m1 stop Chicago O'Hare Intl

12:55 pm - 9:01 pmAUS Austin Bergstrom-MLI Moline Quad-City

8h 06m1 stop Denver Intl

$400United Airlines

Tue, Sep 15 - Tue, Sep 15

7:00 am - 9:58 amORD Chicago O'Hare Intl-AUS Austin Bergstrom

2h 58mnonstop

3:33 pm - 6:30 pmAUS Austin Bergstrom-ORD Chicago O'Hare Intl

2h 57mnonstop

$403United Airlines

Wed, Sep 16 - Wed, Sep 23

10:15 am - 12:50 pmMDW Chicago Midway-AUS Austin Bergstrom

2h 35mnonstop

4:40 pm - 7:10 pmAUS Austin Bergstrom-MDW Chicago Midway

2h 30mnonstop

$403Southwest

Wed, Sep 16 - Wed, Sep 23

10:15 am - 12:50 pmMDW Chicago Midway-AUS Austin Bergstrom

2h 35mnonstop

4:45 pm - 8:45 pmAUS Austin Bergstrom-MDW Chicago Midway

4h 00m1 stop Dallas Love Field

$409Southwest

Tue, Sep 15 - Wed, Sep 16

11:17 am - 6:37 pmORD Chicago O'Hare Intl-AUS Austin Bergstrom

7h 20m1 stop Detroit Metropolitan Wayne County

5:07 pm - 11:59 pmAUS Austin Bergstrom-ORD Chicago O'Hare Intl

6h 52m1 stop Atlanta Hartsfield-Jackson

$422Delta

Tue, Sep 15 - Wed, Sep 16

6:05 am - 12:29 pmMDW Chicago Midway-AUS Austin Bergstrom

6h 24m1 stop Atlanta Hartsfield-Jackson

5:07 pm - 10:44 pmAUS Austin Bergstrom-MDW Chicago Midway

5h 37m1 stop Atlanta Hartsfield-Jackson

$422Delta

Recent direct flight deals from Illinois to Austin

Tue, Dec 8 - Tue, Dec 15

1:55 pm - 4:00 pmSTL Lambert-St Louis-AUS Austin Bergstrom

2h 05mnonstop

12:15 pm - 2:20 pmAUS Austin Bergstrom-STL Lambert-St Louis

2h 05mnonstop

$217Southwest

Wed, Dec 9 - Wed, Dec 16

8:25 am - 10:35 amSTL Lambert-St Louis-AUS Austin Bergstrom

2h 10mnonstop

3:15 pm - 5:20 pmAUS Austin Bergstrom-STL Lambert-St Louis

2h 05mnonstop

$217Southwest

Thu, Oct 1 - Tue, Oct 6

9:45 pm - 11:50 pmSTL Lambert-St Louis-AUS Austin Bergstrom

2h 05mnonstop

7:30 am - 9:35 amAUS Austin Bergstrom-STL Lambert-St Louis

2h 05mnonstop

$217Southwest

Wed, Nov 4 - Wed, Nov 11

1:55 pm - 4:00 pmSTL Lambert-St Louis-AUS Austin Bergstrom

2h 05mnonstop

3:15 pm - 5:20 pmAUS Austin Bergstrom-STL Lambert-St Louis

2h 05mnonstop

$217Southwest

Wed, Nov 11 - Sat, Nov 14

7:45 pm - 10:38 pmORD Chicago O'Hare Intl-AUS Austin Bergstrom

2h 53mnonstop

6:03 am - 9:00 amAUS Austin Bergstrom-ORD Chicago O'Hare Intl

2h 57mnonstop

$291American Airlines

Sat, Dec 12 - Sat, Jan 9

7:45 pm - 10:38 pmORD Chicago O'Hare Intl-AUS Austin Bergstrom

2h 53mnonstop

3:49 pm - 6:47 pmAUS Austin Bergstrom-ORD Chicago O'Hare Intl

2h 58mnonstop

$291American Airlines

Sat, Jan 2 - Wed, Jan 6

7:00 am - 10:01 amORD Chicago O'Hare Intl-AUS Austin Bergstrom

3h 01mnonstop

12:49 pm - 3:42 pmAUS Austin Bergstrom-ORD Chicago O'Hare Intl

2h 53mnonstop

$291United Airlines

Tue, Oct 13 - Tue, Oct 13

7:00 am - 9:58 amORD Chicago O'Hare Intl-AUS Austin Bergstrom

2h 58mnonstop

5:25 pm - 8:22 pmAUS Austin Bergstrom-ORD Chicago O'Hare Intl

2h 57mnonstop

$291United Airlines

Wed, Jan 20 - Wed, Jan 27

2:49 pm - 5:57 pmORD Chicago O'Hare Intl-AUS Austin Bergstrom

3h 08mnonstop

3:49 pm - 6:47 pmAUS Austin Bergstrom-ORD Chicago O'Hare Intl

2h 58mnonstop

$291American Airlines

Tue, Oct 20 - Sat, Oct 31

1:29 pm - 4:22 pmORD Chicago O'Hare Intl-AUS Austin Bergstrom

2h 53mnonstop

7:41 am - 10:37 amAUS Austin Bergstrom-ORD Chicago O'Hare Intl

2h 56mnonstop

$291American Airlines

Useful Info

Low season	January
High season	March
Cheapest flight	$81

Best time to beat the crowds with an average 15% drop in price.

Most popular time to fly with an average 3% increase in price.

Flight from St. Louis to Austin

How does KAYAK find such low prices on flights from Illinois to Austin?
KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Illinois to Austin.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to Austin?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Austin from Illinois is likely to change within 7 days, so travelers know whether to wait or book now.
What is the Hacker Fare option on flights from Illinois to Austin?
Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Austin with an airline and back to Illinois with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois to Austin?
Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Austin from Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.