Austin

$234+ Cheap flights from Sioux City to Austin (SUX - AUS)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/19. Fares are subject to change and may not be available on all flights or dates of travel.
SUX — AUS
Jul 8 — Jul 151
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Sioux City to Austin with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 July 3, 2025.

Round-trip from

$234
(United Airlines)
From Sioux City Sioux Gateway to Austin Bergstrom

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 July 3, 2025.

This United Airlines deal was found by Cheapflights users on 7/1. 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.
Tue 8/196:48 pmSUX - AUS
1 stop5h 10mUnited Airlines
Mon 8/255:25 pmAUS - SUX
1 stop5h 32mUnited Airlines
Deal found 7/1$234

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 July 3, 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

Tue 8/19

6:48 pm-11:58 pm

1 stop5h 10m

Austin Bergstrom

Mon 8/25

5:25 pm-10:57 pm

1 stop5h 32m

$234

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/1

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.

Reviews of airlines servicing Austin

Get insights into the airlines that provide service to Austin. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Austin. Reviews last updated July 3, 2025.
Peruse reviews from past customers who have flown with United Airlines from Sioux City to Austin to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Overall

7.4

Crew

8.1

Entertainment

7.0

Boarding

7.7

Food

6.6

Comfort

7.3

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

Overall

7.4

Crew

8.1

Entertainment

7.0

Boarding

7.7

Food

6.6

Comfort

7.3

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

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 Sioux City?

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Sioux City to Austin

See prices for flight routes from nearby airports that may be better suited for you.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.