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$299+ Cheap flights from Sioux City to Austin (SUX - AUS)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/21. Fares are subject to change and may not be available on all flights or dates of travel.
SUX — AUS
Aug 22 — Aug 291
Fri 8/22
Fri 8/29
1 adult, Economy
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Cheap flight deals from Sioux City to Austin

Discover tips and strategies to find the most affordable flight options for your journey from Sioux City (SUX) to Austin (AUS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated August 17, 2025.

Round-trip from

$409
(United Airlines)

One-way from

$299
(United Airlines)
From Sioux City Sioux Gateway to Austin Bergstrom
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One-way flight from Sioux City Sioux Gateway to Austin Bergstrom
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Find flight deals from Sioux City to Austin

Cheapest flights from Sioux City to Austin
Explore the most affordable flight options available from Sioux City to Austin. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 17, 2025.

This United Airlines deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/217:49 amSUX - AUS
2 stops7h 34mUnited Airlines
Sat 8/2312:10 pmAUS - SUX
2 stops10h 47mUnited Airlines
Deal found 8/17$409

Cheapflights Fare Finder

 
Customize your flight search to find flights from Sioux City to Austin that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 17, 2025.
Use the filters below to find and compare flights from Sioux City to Austin that are best for you.

Fly from

Sioux City

Fly to

Austin

Route

Depart

Return

Price

Sioux CityAustin

SUX - AUS

SUXAUS

Sioux City Sioux Gateway

Thu 8/21

7:49 am-3:23 pm

2 stops7h 34m

Austin Bergstrom

Sat 8/23

12:10 pm-10:57 pm

2 stops10h 47m

$409

Sioux CityAustin

SUX - AUS

SUXAUS

Sioux City Sioux Gateway

Sun 9/21

7:49 am-10:08 am

1 stop26h 19m

$299

Sioux CityAustin

SUX - AUS

SUXAUS

Sioux City Sioux Gateway

Wed 8/20

6:48 pm-11:58 pm

1 stop5h 10m

$342

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/15

Best time to book a flight from Sioux City to Austin

Have a flexible travel schedule? Discover the best time to fly to Austin from Sioux City with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Sioux City to Austin

What is the cheapest month to book a flight from Sioux City to Austin?

Currently, January is the cheapest month in which you can book a flight from Sioux City to Austin (average of $286). Flying from Sioux City to Austin in March is currently the most expensive (average of $362). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from Sioux City to Austin. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • Can I find deals for flights from Sioux City to Austin that include hotel bookings?

    Yes. In addition to deals on Sioux City to Austin flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Sioux City to Austin?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Sioux City to Austin.

  • Can I find deals for business class flights from Sioux City to Austin?

    Yes. Cheapflights offers flight deals from Sioux City to Austin by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Sioux City to Austin?

    Currently, January is the cheapest month in which you can book a flight from Sioux City to Austin (average of $286). Flying from Sioux City to Austin in March is currently the most expensive (average of $362). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Austin?

Book flights to Austin if you plan to visit one of these locations
San Marcos
Georgetown
Fredericksburg
Pflugerville
Dripping Springs
Cedar Park
Canyon Lake
Round Rock
Seguin
Horseshoe Bay

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