$164+ 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 10/14. Fares are subject to change and may not be available on all flights or dates of travel.
SUX — AUS
Oct 15 — Oct 221
Round-trip
1 adult, Economy
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
Cheapest
Best
Last-minute
One-way
Cheapest flights from Sioux City to AustinExplore 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 September 15, 2026.
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 September 15, 2026.
This United Airlines deal was found by Cheapflights users on 9/10. 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.
Fri 9/116:35 pm -
1 stop5h 19m
Sun 9/137:10 pm -
2 stops22h 43m
Deal found 9/10![United Airlines logo]()
$722
This United Airlines deal was found by Cheapflights users on 9/13. 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.
Fri 10/236:58 pm -
1 stop5h 01m
Mon 10/267:07 pm -
2 stops23h 03m
Deal found 9/13![United Airlines logo]()
$729
This United Airlines deal was found by Cheapflights users on 9/14. 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.
Sun 9/208:05 am -
1 stop5h 43m
Tue 9/224:30 pm -
1 stop7h 13m
Deal found 9/14![United Airlines logo]()
$927
This deal was found by Cheapflights users on 9/14. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/156:58 pm -
1 stop5h 01m
Mon 10/196:06 pm -
1 stop5h 37m
Deal found 9/14![United Airlines logo]()
$1,010
Best flights from Sioux City to AustinDiscover carefully curated flight deals from Sioux City to Austin that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 15, 2026.
Discover carefully curated flight deals from Sioux City to Austin that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 15, 2026.
This United Airlines deal was found by Cheapflights users on 9/14. 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 1/309:03 am -
2 stops10h 41m
Wed 2/36:00 pm -
1 stop5h 42m
Deal found 9/14![United Airlines logo]()
$414
This United Airlines deal was found by Cheapflights users on 9/10. 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.
Mon 1/119:03 am -
2 stops10h 41m
Sat 1/166:00 pm -
1 stop5h 42m
Deal found 9/10![United Airlines logo]()
$484
Last-minute flights from Sioux City to AustinDiscover last-minute flight deals from Sioux City to Austin. Data last updated September 15, 2026 and is based on user searches.
Discover last-minute flight deals from Sioux City to Austin. Data last updated September 15, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 9/14. 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.
Sun 9/208:05 am -
1 stop5h 43m
Tue 9/224:30 pm -
1 stop7h 13m
Deal found 9/14![United Airlines logo]()
$927
This deal was found by Cheapflights users on 9/14. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/156:58 pm -
1 stop5h 01m
Mon 10/196:06 pm -
1 stop5h 37m
Deal found 9/14![United Airlines logo]()
$1,010
This United Airlines deal was found by Cheapflights users on 9/13. 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.
Fri 10/236:58 pm -
1 stop5h 01m
Mon 10/267:07 pm -
2 stops23h 03m
Deal found 9/13![United Airlines logo]()
$729
One-way flights from Sioux City to AustinSearch for one-way flight options from Sioux City to Austin. Find affordable one-way fares based on user searches. Data last updated September 15, 2026.
Search for one-way flight options from Sioux City to Austin. Find affordable one-way fares based on user searches. Data last updated September 15, 2026.
This United Airlines deal was found by Cheapflights users on 9/10. 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 10/146:58 pm -
1 stop5h 01m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![United Airlines logo]()
$164
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 September 15, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $414 (United Airlines) |
One-way from | $164 (United Airlines) |
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 7,457,451 searches. Data last updated September 15, 2026.
Use the filters below to find and compare flights from Sioux City to Austin that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
Sioux CityAustin
SUX Sioux City Sioux Gateway - AUS Austin Bergstrom
SUXAUS
Sioux City Sioux Gateway
Wed 10/14
6:58 pm-11:59 pm
1 stop5h 01m
Austin Bergstrom
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$164
Sioux CityAustin
SUX Sioux City Sioux Gateway - AUS Austin Bergstrom
SUXAUS
Sioux City Sioux Gateway
Sat 1/30
9:03 am-7:44 pm
2 stops10h 41m
Austin Bergstrom
Wed 2/3
6:00 pm-11:42 pm
1 stop5h 42m
$414
Sioux CityAustin
SUX Sioux City Sioux Gateway - AUS Austin Bergstrom
SUXAUS
Sioux City Sioux Gateway
Mon 1/11
9:03 am-7:44 pm
2 stops10h 41m
Austin Bergstrom
Sat 1/16
6:00 pm-11:42 pm
1 stop5h 42m
$484
Sorted by cheapest first
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 September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- 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.
SUX-AUS
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.
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.
Traveling to a place near Austin?
Book flights to Austin if you plan to visit one of these locationsCedar Park
Round Rock
San Marcos
Bastrop
Fredericksburg
Pflugerville
Dripping Springs
Georgetown
Seguin
Canyon Lake
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
Austin flight routes
Complete your trip
Flights by cabin class
Other flight options
Other flights from Sioux City
Popular flights