AUS

$85 Find Cheap Flights from Illinois to Austin - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Austin departing on 8/13. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Flight Deals

Cheap Flights from Illinois to Austin

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Illinois to Austin that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Illinois to Austin

Thu, Aug 6 - Mon, Aug 10
Frontier Logo
6:34 pm - 12:38 pm
STL
-
AUS
18h 04m
1 stop
Frontier Logo
2:25 pm - 7:23 pm
AUS
-
STL
28h 58m
1 stop
$164Frontier
Thu, Aug 6 - Mon, Aug 10
Frontier Logo
6:34 pm - 12:38 pm
STL
-
AUS
18h 04m
1 stop
Frontier Logo
2:25 pm - 7:23 pm
AUS
-
STL
28h 58m
1 stop
$168Frontier
Sat, Aug 15 - Wed, Aug 19
Delta Logo
5:09 pm - 11:59 pm
MLI
-
AUS
6h 50m
1 stop
Delta Logo
5:15 am - 10:25 am
AUS
-
MLI
5h 10m
1 stop
$231Delta
Sat, Sep 5 - Tue, Sep 15
American Airlines Logo
11:43 am - 8:01 pm
MLI
-
AUS
8h 18m
2 stops
American Airlines Logo
7:00 am - 11:38 am
AUS
-
MLI
4h 38m
1 stop
$236American Airlines
Wed, Sep 2 - Wed, Sep 9
American Airlines Logo
9:04 pm - 11:50 pm
ORD
-
AUS
2h 46mnonstop
American Airlines Logo
3:28 pm - 6:34 pm
AUS
-
ORD
3h 06mnonstop
$261American Airlines
Thu, Aug 6 - Tue, Aug 11
Southwest Logo
5:30 am - 7:55 am
MDW
-
AUS
2h 25mnonstop
Southwest Logo
1:30 pm - 4:00 pm
AUS
-
MDW
2h 30mnonstop
$261Southwest
Sat, Sep 5 - Tue, Sep 15
United Airlines Logo
10:30 am - 5:54 pm
MLI
-
AUS
7h 24m
2 stops
United Airlines Logo
5:30 am - 12:31 pm
AUS
-
MLI
7h 01m
2 stops
$264United Airlines
Thu, Aug 6 - Tue, Aug 11
Southwest Logo
8:05 am - 12:45 pm
MDW
-
AUS
4h 40m
1 stop
Southwest Logo
4:40 pm - 7:10 pm
AUS
-
MDW
2h 30mnonstop
$267Southwest
Tue, Dec 1 - Sun, Dec 6
Delta Logo
5:00 pm - 12:32 am
MLI
-
AUS
7h 32m
1 stop
Delta Logo
10:52 am - 4:22 pm
AUS
-
MLI
5h 30m
1 stop
$270Delta
Wed, Sep 2 - Sun, Sep 6
United Airlines Logo
8:29 am - 4:24 pm
PIA
-
AUS
7h 55m
1 stop
United Airlines Logo
3:33 pm - 10:43 pm
AUS
-
PIA
7h 10m
1 stop
$293United Airlines
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Good to know

Low season

January

Cheapest flight

$85
Best time to beat the crowds with an average 14% drop in price.
Most popular time to fly and prices are also 10% lower on average.
Flight from St. Louis to Austin

FAQs for booking flights from Illinois 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.

Traveling to a place near Austin?

Book flights to Austin if you plan to visit one of these locations
Fredericksburg
Georgetown
Cedar Park
Bastrop
Dripping Springs
Seguin
Buda
Canyon Lake
Horseshoe Bay
Flatonia

Everything you need to know for your flight to Austin

Information on the airport you'll fly into in Austin

Austin (AUS)