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Cheap flights from Sioux City to Austin from $351

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Sioux City to Austin departing on 9/21. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Sioux City to Austin (SUX-AUS)

Cheap round-trip flights

United Airlines Logo
6:54 pm - 11:03 amSUX-AUS
16h 09m1 stop
United Airlines Logo
5:20 pm - 11:15 pmAUS-SUX
5h 55m1 stop
$665United Airlines
Find Deal
Sat, Dec 27 - Fri, Jan 2
United Airlines Logo
6:54 pm - 11:03 amSUX-AUS
16h 09m1 stop
United Airlines Logo
2:17 pm - 11:15 pmAUS-SUX
8h 58m2 stops
$730United Airlines
Find Deal
Sat, Dec 27 - Fri, Jan 2
United Airlines Logo
6:54 pm - 1:15 pmSUX-AUS
18h 21m2 stops
United Airlines Logo
2:17 pm - 11:15 pmAUS-SUX
8h 58m2 stops
$810United Airlines
Find Deal
Sat, Dec 27 - Fri, Jan 2

United Airlines flights from Sioux City to Austin

Our best United Airlines deals on Sioux City to Austin flight tickets
United Airlines
Dec 27
SUX6:54 pmSioux City Sioux Gateway
16h 09m
1 stop
AUS11:03 amAustin Bergstrom
Jan 2
AUS5:20 pmAustin Bergstrom
5h 55m
1 stop
SUX11:15 pmSioux City Sioux Gateway
$665
Find similar
United Airlines
Dec 27
SUX6:54 pmSioux City Sioux Gateway
16h 09m
1 stop
AUS11:03 amAustin Bergstrom
Jan 2
AUS2:17 pmAustin Bergstrom
8h 58m
2 stops
SUX11:15 pmSioux City Sioux Gateway
$730
Find similar
United Airlines
Dec 27
SUX6:54 pmSioux City Sioux Gateway
18h 21m
2 stops
AUS1:15 pmAustin Bergstrom
Jan 2
AUS2:17 pmAustin Bergstrom
8h 58m
2 stops
SUX11:15 pmSioux City Sioux Gateway
$810
Find similar

momondo 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, momondo users made 832,500 searches. Data last updated September 9, 2025.
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

Price

Sioux CityAustin

SUX - AUS

SUXAUS

Sioux City Sioux Gateway

Sat 12/27

6:54 pm-11:03 am

1 stop16h 09m

Austin Bergstrom

Fri 1/2

5:20 pm-11:15 pm

1 stop5h 55m

$665

Sioux CityAustin

SUX - AUS

SUXAUS

Sioux City Sioux Gateway

Sat 12/27

6:54 pm-11:03 am

1 stop16h 09m

Austin Bergstrom

Fri 1/2

2:17 pm-11:15 pm

2 stops8h 58m

$730

Sioux CityAustin

SUX - AUS

SUXAUS

Sioux City Sioux Gateway

Sat 12/27

6:54 pm-1:15 pm

2 stops18h 21m

Austin Bergstrom

Fri 1/2

2:17 pm-11:15 pm

2 stops8h 58m

$810

Sioux CityAustin

SUX - AUS

SUXAUS

Sioux City Sioux Gateway

Sun 9/21

6:48 pm-11:29 am

1 stop16h 41m

$351

Sioux CityAustin

SUX - AUS

SUXAUS

Sioux City Sioux Gateway

Sun 9/21

6:48 pm-11:58 pm

1 stop5h 10m

$369

Sioux CityAustin

SUX - AUS

SUXAUS

Sioux City Sioux Gateway

Sun 9/21

6:48 pm-11:29 am

1 stop16h 41m

$381

Sioux CityAustin

SUX - AUS

SUXAUS

Sioux City Sioux Gateway

Sun 9/21

6:48 pm-10:53 pm

2 stops28h 05m

$411

Sioux CityAustin

SUX - AUS

SUXAUS

Sioux City Sioux Gateway

Sun 9/21

6:48 pm-10:53 pm

2 stops28h 05m

$466

Sioux CityAustin

SUX - AUS

SUXAUS

Sioux City Sioux Gateway

Sun 9/21

7:49 am-10:58 am

3 stops27h 09m

$534

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Austin from

How to get the cheapest flight ticket from Sioux City to Austin

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Sioux City Sioux Gateway to Austin Bergstrom?

United Airlines is the most popular carrier operating from Sioux City Sioux Gateway to Austin Bergstrom

What airlines fly to Austin?

American Airlines, Southwest and United Airlines are the top three most popular airlines that fly to Austin from Sioux City according to our data. American Airlines is the first choice among our users, with 55% of people opting to fly with this airline when traveling to Austin. Keep in mind that there are 5 different airlines that fly to Austin on a routine basis, so you have a few additional options to choose from.

When to book flights from Sioux City to Austin

Are you open to changing your travel dates? Check out the ideal times to fly from Sioux City to Austin according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Sioux City to Austin (SUX to AUS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Sioux City to Austin

Direct flights

None
There are no direct flights from Sioux City to Austin. There are no popular flight routes from Sioux City to Austin.
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  • How far is Sioux City Sioux Gateway to Austin Bergstrom by plane?

    The straight-line distance from Sioux City Sioux Gateway to Austin Bergstrom is 847.0 mi. Typically, this will take 16h 09m by plane in normal conditions.

  • When did momondo last update prices for flights from Sioux City Sioux Gateway Airport to Austin Bergstrom Airport?

    Prices for flights from Sioux City Sioux Gateway Airport to Austin Bergstrom Airport refresh daily.

  • How old do you have to be to fly from Sioux City Sioux Gateway Airport to Austin Bergstrom Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Sioux City Sioux Gateway Airport to Austin Bergstrom Airport.

  • What documentation or ID do you need to fly to Austin Bergstrom Airport?

    The required travel and health documents for your Austin Bergstrom Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Austin Bergstrom Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Traveling to a place near Austin?

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

Why use momondo?

Why should I use momondo to find a flight deal from Sioux City to Austin?

Finding the right flight to Austin from Sioux City is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Austin quick and easy, saving you time and money.

Can I find flights from Sioux City to Austin with flexible booking policies on momondo?

momondo does allow users to show only those flights to Austin from Sioux City which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Sioux City to Austin?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Sioux City to Austin.

I’m not ready to book a flight from Sioux City to Austin right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Sioux City to Austin now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Austin and let you know when they change.

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