$139 Cheap United flights Las Vegas (LAS) to Sioux Falls (FSD)

Apply the “Price (lowest to highest)” filter on Expedia to search for cheap United Airlines return flights from $248 from LAS to FSD. Affordable one-way tickets from $139 are also on offer.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

United Airlines flights to Sioux Falls are often more affordable in the quieter months of January and December. Whether you’re searching for a round-trip or one-way ticket, you could land a better deal then.

Look for cheap United Airlines flights from Harry Reid Intl. Airport (LAS) to Sioux Falls Regional Airport (FSD) one to three months ahead of your departure date. Travelers who book domestic flights 34 to 86 days in advance can save 25% compared to those who book just 6 to 12 days ahead. No matter the fare type and itinerary, the best day of the week to book a domestic flight is usually Sunday and the most expensive day tends to be Monday. Passengers who book on a Sunday can save 6% on average compared to those who book on a Monday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC’s global airline sales database.

Use the “Nonstop” filter when browsing for direct United Airlines flights from LAS to FSD. You can also compare other carriers offering the same direct route.

Search United Airlines’s earliest flights from LAS to FSD by checking the “Morning” and “Early Morning” filters. Not only will you arrive at your destination sooner, early departures are also 20% less likely to be canceled.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.

Sioux Falls Regional Airport (FSD) is the main Sioux Falls gateway for United Airlines flights from Harry Reid Intl. Airport (LAS).

Journey from LAS to FSD with United Airlines and enjoy a range of benefits starting with a rewarding loyalty program. When booking through Expedia as a United Mileage Plus and One Key™ member, you could also earn OneKeyCash™* to spend on select future travel purchases.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Depending on your fare type, a fee is typically charged if you modify or cancel your booking more than 24 hours after it’s been confirmed. To find flexible plane tickets, select our “Changes included” or “No cancel fee” filter while searching for flights. For more details on modifying or canceling your reservation, visit “Trips,” select your flight and tick “Manage Booking.”