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$329+ 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 3/7. Fares are subject to change and may not be available on all flights or dates of travel.
SUX — AUS
Mar 21 — Mar 281
Sat 3/21
Sat 3/28
1 adult, Economy
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Cheap 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 February 19, 2026.

This United Airlines deal was found by Cheapflights users on 2/17. 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.
Sat 3/76:30 pm
SUX
-
AUS
1 stop5h 14m
United Airlines
Wed 3/115:30 am
AUS
-
SUX
1 stop5h 15m
United Airlines
Deal found 2/17$329
This United Airlines deal was found by Cheapflights users on 2/16. 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 3/36:00 am
SUX
-
AUS
2 stops11h 23m
United Airlines
Sat 3/75:30 am
AUS
-
SUX
1 stop5h 15m
United Airlines
Deal found 2/16$418
This United Airlines deal was found by Cheapflights users on 2/16. 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 3/106:10 am
SUX
-
AUS
2 stops9h 12m
United Airlines
Fri 3/135:30 am
AUS
-
SUX
1 stop5h 15m
United Airlines
Deal found 2/16$437
This United Airlines deal was found by Cheapflights users on 2/17. 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.
Sat 5/96:00 am
SUX
-
AUS
1 stop7h 04m
United Airlines
Thu 5/146:25 pm
AUS
-
SUX
1 stop16h 16m
United Airlines
Deal found 2/17$452
This United Airlines deal was found by Cheapflights users on 2/16. 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 3/36:00 am
SUX
-
AUS
2 stops9h 22m
United Airlines
Fri 3/64:54 pm
AUS
-
SUX
1 stop6h 47m
United Airlines
Deal found 2/16$458
This United Airlines deal was found by Cheapflights users on 2/15. 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.
Wed 2/256:46 pm
SUX
-
AUS
1 stop5h 13m
United Airlines
Sun 3/17:59 pm
AUS
-
SUX
1 stop14h 46m
United Airlines
Deal found 2/15$550

Find 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 February 19, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$329
(United Airlines)
Provider with most accurate pricing for Sioux City Sioux Gateway-Austin Bergstrom flight deals.
Search Deals
Provider most trusted by Cheapflights users for Sioux City Sioux Gateway-Austin Bergstrom flights.
Search Deals
From Sioux City Sioux Gateway to Austin Bergstrom
Search Deals

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 February 19, 2026.
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

Sat 3/7

6:30 pm-11:44 pm

1 stop5h 14m

Austin Bergstrom

Wed 3/11

5:30 am-10:45 am

1 stop5h 15m

$329

Sioux CityAustin

SUX - AUS

SUXAUS

Sioux City Sioux Gateway

Tue 3/3

6:00 am-5:23 pm

2 stops11h 23m

Austin Bergstrom

Sat 3/7

5:30 am-10:45 am

1 stop5h 15m

$418

Sioux CityAustin

SUX - AUS

SUXAUS

Sioux City Sioux Gateway

Tue 3/10

6:10 am-3:22 pm

2 stops9h 12m

Austin Bergstrom

Fri 3/13

5:30 am-10:45 am

1 stop5h 15m

$437

Sioux CityAustin

SUX - AUS

SUXAUS

Sioux City Sioux Gateway

Sat 5/9

6:00 am-1:04 pm

1 stop7h 04m

Austin Bergstrom

Thu 5/14

6:25 pm-10:41 am

1 stop16h 16m

$452

Sioux CityAustin

SUX - AUS

SUXAUS

Sioux City Sioux Gateway

Tue 3/3

6:00 am-3:22 pm

2 stops9h 22m

Austin Bergstrom

Fri 3/6

4:54 pm-11:41 pm

1 stop6h 47m

$458

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/17

Compare providers for flights from Sioux City to Austin

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Sioux City to Austin in February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Sioux City-Austin flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Sioux City-Austin flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Sioux City-Austin flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Sioux City-Austin flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Sioux City-Austin flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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, September is the cheapest month in which you can book a flight from Sioux City to Austin (average of $164). Flying from Sioux City to Austin in December is currently the most expensive (average of $256). 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.

  • How long is the flight from Sioux City to Austin?

    A quick flight from Sioux City to Austin can take about 5h 14m. United Airlines provides one of the quickest options available for as low as $329. The distance from Sioux City to Austin is about 846 mi.

  • 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, September is the cheapest month in which you can book a flight from Sioux City to Austin (average of $164). Flying from Sioux City to Austin in December is currently the most expensive (average of $256). 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
Cedar Park
San Marcos
Fredericksburg
Round Rock
Georgetown
Bastrop
Pflugerville
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Canyon Lake
Seguin
Horseshoe Bay

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