AUS

$86 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 8/31. 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

Mon, Aug 3 - Thu, Aug 6
Frontier Logo
4:57 pm - 4:39 pm
STL
-
AUS
23h 42m
1 stop
Frontier Logo
5:34 pm - 8:57 am
AUS
-
STL
15h 23m
1 stop
$177Frontier
Mon, Aug 3 - Thu, Aug 6
Frontier Logo
4:57 pm - 4:39 pm
STL
-
AUS
23h 42m
1 stop
Frontier Logo
5:34 pm - 8:57 am
AUS
-
STL
15h 23m
1 stop
$180Frontier
Wed, Aug 19 - Wed, Aug 26
Southwest Logo
8:50 pm - 10:50 pm
STL
-
AUS
2h 00mnonstop
Southwest Logo
7:30 am - 9:35 am
AUS
-
STL
2h 05mnonstop
$209Southwest
Tue, Sep 29 - Tue, Sep 29
United Airlines Logo
5:10 am - 11:30 am
STL
-
AUS
6h 20m
1 stop
United Airlines Logo
5:39 pm - 10:30 pm
AUS
-
STL
4h 51m
1 stop
$214United Airlines
Sat, Aug 1 - Wed, Aug 5
Southwest Logo
6:45 pm - 8:50 pm
STL
-
AUS
2h 05mnonstop
Southwest Logo
12:55 pm - 4:25 pm
AUS
-
STL
3h 30m
1 stop
$215Southwest
Tue, Oct 20 - Sat, Oct 24
Delta Logo
5:10 pm - 11:24 pm
MLI
-
AUS
6h 14m
1 stop
Delta Logo
11:15 am - 4:22 pm
AUS
-
MLI
5h 07m
1 stop
$231Delta
Sat, Aug 15 - Sat, Aug 22
American Airlines Logo
4:32 pm - 9:33 pm
MLI
-
AUS
5h 01m
1 stop
American Airlines Logo
3:41 pm - 12:08 am
AUS
-
MLI
8h 27m
2 stops
$236American Airlines
Sat, Aug 8 - Mon, Aug 10
Delta Logo
1:51 pm - 8:55 pm
MDW
-
AUS
7h 04m
1 stop
Delta Logo
6:30 am - 11:51 am
AUS
-
MDW
5h 21m
1 stop
$261Delta
Thu, Sep 24 - Mon, Sep 28
American Airlines Logo
9:13 pm - 11:59 pm
ORD
-
AUS
2h 46mnonstop
American Airlines Logo
6:38 pm - 9:49 pm
AUS
-
ORD
3h 11mnonstop
$269American Airlines
Wed, Jul 29 - Wed, Aug 5
United Airlines Logo
5:43 pm - 10:54 pm
PIA
-
AUS
5h 11m
1 stop
United Airlines Logo
5:30 am - 12:38 pm
AUS
-
PIA
7h 08m
2 stops
$298United Airlines
Useful Info

Good to know

Low seasonJanuary
Cheapest flight$86
Best time to beat the crowds with an average 9% drop in price.
Most popular time to fly and prices are also 9% 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
Dripping Springs
Bastrop
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)