AUS

$55 Find Cheap Flights from Illinois to Austin

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 12/8. 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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Everything you should know

Cheapest round-trip
$110
Overall average: $360
Frontier
Mon 12/8Thu 12/11
STL - AUS • 1 stop
Cheapest non-stop
$118
Typical prices: $282-$543
Frontier
Thu 12/11Sun 12/14
ORD - AUS • Non-stop
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Flight Deals
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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, Dec 8 - Thu, Dec 11
Frontier Logo
10:47 am - 5:13 pmSTL-AUS
6h 26m1 stop
Frontier Logo
10:22 pm - 12:12 pmAUS-STL
13h 50m1 stop
$110Frontier
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Thu, Dec 11 - Sun, Dec 14
Frontier Logo
3:47 pm - 6:37 pmORD-AUS
2h 50mnonstop
Frontier Logo
12:23 pm - 8:46 pmAUS-ORD
8h 23m1 stop
$116Frontier
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Tue, Dec 9 - Fri, Dec 12
Multiple Airlines Logo
3:26 pm - 10:21 pmORD-AUS
30h 55m1 stop
Multiple Airlines Logo
11:19 am - 2:16 pmAUS-ORD
2h 57mnonstop
$132Multiple Airlines
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Wed, Dec 10 - Tue, Dec 16
Southwest Logo
8:15 am - 11:05 amMDW-AUS
2h 50mnonstop
Southwest Logo
6:15 am - 8:50 amAUS-MDW
2h 35mnonstop
$139Southwest
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Tue, Dec 9 - Tue, Dec 16
American Airlines Logo
12:22 pm - 3:16 pmORD-AUS
2h 54mnonstop
American Airlines Logo
6:05 am - 8:53 amAUS-ORD
2h 48mnonstop
$139American Airlines
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Thu, Jan 15 - Mon, Jan 19
Multiple Airlines Logo
5:05 am - 5:17 pmORD-AUS
12h 12m1 stop
Multiple Airlines Logo
10:48 am - 7:54 amAUS-ORD
21h 06m1 stop
$141Multiple Airlines
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Sat, Feb 14 - Sun, Feb 15
Southwest Logo
8:30 pm - 11:20 pmMDW-AUS
2h 50mnonstop
Southwest Logo
5:10 am - 10:20 amAUS-MDW
5h 10m1 stop
$149Southwest
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Sat, Dec 6 - Sat, Dec 13
American Airlines Logo
10:00 am - 1:00 pmORD-AUS
3h 00mnonstop
American Airlines Logo
6:05 am - 8:53 amAUS-ORD
2h 48mnonstop
$149American Airlines
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Sat, Dec 13 - Sun, Dec 14
United Airlines Logo
8:59 am - 12:04 pmORD-AUS
3h 05mnonstop
United Airlines Logo
7:00 am - 9:44 amAUS-ORD
2h 44mnonstop
$168United Airlines
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Fri, Dec 5 - Sat, Dec 6
United Airlines Logo
1:35 pm - 7:09 pmSTL-AUS
5h 34m1 stop
United Airlines Logo
7:00 am - 12:15 pmAUS-STL
5h 15m1 stop
$248United Airlines
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Useful Info

Good to know

Low seasonAugust
Cheapest flight$55
Best time to beat the crowds with an average 20% drop in price.
Most popular time to fly with an average 18% increase in price.
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
Seguin
Bastrop
Canyon Lake
Horseshoe Bay
Buda
Flatonia

Everything you need to know for your flight to Austin

Information on the airport you'll fly into in Austin

Austin (AUS)