A rocky outcrop in a grassy field with a cloudy sky.

Cheap Flights to Sioux County from $99

View $99 flight on Sun, Oct 11, 2026Opens in a new window

Flight 1

Flight 2

Popular airlines to Sioux County

  • United

  • Denver Air Connection

  • Be in the know

    Get alerts if flight prices drop or rise*

  • Book smarter

    Save up to 30% on select hotels after you book a flight*

  • Earn twice

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

How much is the cheapest flight to Sioux County?

Prices were available within the past 7 days and start at $99 for one-way flights and $177 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
United
KEY LIME AIR DBA DENVER AIR CONNECTION
KEY LIME AIR DBA DENVER AIR CONNECTION
KEY LIME AIR DBA DENVER AIR CONNECTION
KEY LIME AIR DBA DENVER AIR CONNECTION
KEY LIME AIR DBA DENVER AIR CONNECTION
KEY LIME AIR DBA DENVER AIR CONNECTION
Delta
American Airlines

Airports in Sioux County

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

Trending flights to Sioux County

These prices were available within the past 7 days. Prices quoted are per person, round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United

Book with confidence

Enjoy extra legroom, flight flexibility, and a seamless travel experience.

Travel information

*Flight schedules are subject to change.

*Available to One Key members.

*Flight schedules are subject to change.

*Available to One Key members.

Explore a world of travel with Expedia