Flights to South Sioux Falls from Austin - $100

View $100 flight on Sun, Aug 31, 2025Opens in a new window

Popular airlines from Austin to South Sioux Falls

  • American Airlines

    American Airlines

  • United

    United

  • Delta

    Delta

  • Frontier Airlines

    Frontier Airlines

  • Plan, book, fly with confidence

  • trending down icon

    Be in the know

    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon

    Book smarter

    Save up to 30% on select hotels after you book a flight*
  • one key icon

    Earn twice

    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

Cheap Flights from Austin to South Sioux Falls (AUS-FSD)

Prices were available within the past 7 days and start at $100 for one-way flights and $225 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Sat, Aug 30 - Wed, Sep 3
AUS
Austin
FSD
Sioux Falls
$225 Roundtrip, found 17 hours ago
$225
Roundtrip
found 17 hours ago
Select American Airlines flight, departing Sat, Aug 30 from Austin to Sioux Falls, returning Wed, Sep 3, priced at $225 found 17 hours ago
American Airlines
Sat, Aug 30 - Wed, Sep 3
AUS
Austin
FSD
Sioux Falls
$227 Roundtrip, found 17 hours ago
$227
Roundtrip
found 17 hours ago
Select American Airlines flight, departing Sat, Aug 30 from Austin to Sioux Falls, returning Wed, Sep 3, priced at $227 found 17 hours ago
Frontier Airlines
Fri, Sep 12 - Sun, Sep 14
AUS
Austin
FSD
Sioux Falls
$228 Roundtrip, found 9 hours ago
$228
Roundtrip
found 9 hours ago
Select Frontier Airlines flight, departing Fri, Sep 12 from Austin to Sioux Falls, returning Sun, Sep 14, priced at $228 found 9 hours ago
Frontier Airlines
Thu, Aug 28 - Sun, Aug 31
AUS
Austin
FSD
Sioux Falls
$234 Roundtrip, found 2 days ago
$234
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Thu, Aug 28 from Austin to Sioux Falls, returning Sun, Aug 31, priced at $234 found 2 days ago
Delta
Sat, Aug 30 - Sun, Aug 31
AUS
Austin
FSD
Sioux Falls
$237 Roundtrip, found 17 hours ago
$237
Roundtrip
found 17 hours ago
Select Delta flight, departing Sat, Aug 30 from Austin to Sioux Falls, returning Sun, Aug 31, priced at $237 found 17 hours ago
United
Sat, Aug 30 - Wed, Sep 3
AUS
Austin
FSD
Sioux Falls
$244 Roundtrip, found 17 hours ago
$244
Roundtrip
found 17 hours ago
Select United flight, departing Sat, Aug 30 from Austin to Sioux Falls, returning Wed, Sep 3, priced at $244 found 17 hours ago

Find the cheapest month to fly from Austin (AUS) to Sioux Falls (FSD)

March is typically the cheapest month to fly

From $154 - $710 per traveler.

Graph displaying average flight prices per month

Alternative airports

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Sioux Falls Regional FSD. Cheapest option available. Flights from $270
FSD
Sioux Falls Regional
Cheapest
Flights from $270
*Available to One Key members.