AUS

$63 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 9/28. 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

Sun, Aug 16 - Wed, Aug 19
Frontier Logo
6:34 pm - 12:38 pm
STL
-
AUS
18h 04m
1 stop
Frontier Logo
5:37 pm - 5:22 pm
AUS
-
STL
23h 45m
1 stop
$162Frontier
Mon, Oct 19 - Thu, Oct 22
Frontier Logo
10:35 am - 9:48 am
STL
-
AUS
23h 13m
1 stop
Frontier Logo
10:50 am - 9:40 am
AUS
-
STL
22h 50m
1 stop
$176Frontier
Thu, Aug 13 - Mon, Aug 17
Southwest Logo
8:25 am - 10:25 am
STL
-
AUS
2h 00mnonstop
Southwest Logo
7:25 am - 9:30 am
AUS
-
STL
2h 05mnonstop
$209Southwest
Thu, Sep 17 - Mon, Sep 21
Southwest Logo
8:45 pm - 10:50 pm
STL
-
AUS
2h 05mnonstop
Southwest Logo
3:15 pm - 5:20 pm
AUS
-
STL
2h 05mnonstop
$209Southwest
Thu, Sep 24 - Mon, Sep 28
United Airlines Logo
6:15 am - 11:08 am
STL
-
AUS
4h 53m
1 stop
United Airlines Logo
3:37 pm - 9:21 pm
AUS
-
STL
5h 44m
1 stop
$222United Airlines
Wed, Aug 19 - Mon, Aug 24
United Airlines Logo
8:35 am - 1:12 pm
STL
-
AUS
4h 37m
1 stop
United Airlines Logo
3:33 pm - 10:00 pm
AUS
-
STL
6h 27m
1 stop
$227United Airlines
Mon, Nov 2 - Sat, Nov 7
Delta Logo
5:38 pm - 11:24 pm
STL
-
AUS
5h 46m
1 stop
Delta Logo
5:05 pm - 11:54 pm
AUS
-
STL
6h 49m
1 stop
$227Delta
Sat, Sep 12 - Wed, Sep 16
Delta Logo
3:54 pm - 11:13 pm
STL
-
AUS
7h 19m
1 stop
Delta Logo
5:15 am - 10:55 am
AUS
-
STL
5h 40m
1 stop
$227Delta
Thu, Sep 17 - Mon, Sep 21
American Airlines Logo
10:14 am - 3:42 pm
STL
-
AUS
5h 28m
1 stop
American Airlines Logo
6:38 pm - 12:27 am
AUS
-
STL
5h 49m
1 stop
$227American Airlines
Thu, Oct 1 - Mon, Oct 5
American Airlines Logo
5:00 am - 10:50 am
STL
-
AUS
5h 50m
1 stop
American Airlines Logo
5:46 pm - 9:59 pm
AUS
-
STL
4h 13m
1 stop
$227American Airlines
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Good to know

Low season

January

Cheapest flight

$63
Best time to beat the crowds with an average 13% 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)