$109 Cheap United flights Sioux Falls (FSD) to Denver (DEN)

View $109 flight on Sun, Sep 28, 2025Opens in a new window

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$109 Cheap United flights Sioux Falls (FSD) to Denver (DEN)

Prices were available within the past 7 days and start at $109 for one-way flights and $179 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Sun, Sep 28 - Thu, Oct 2
FSD
Sioux Falls
DEN
Denver
$179 Roundtrip, found 13 hours ago
$179
Roundtrip
found 13 hours ago
Select United flight, departing Sun, Sep 28 from Sioux Falls to Denver, returning Thu, Oct 2, priced at $179 found 13 hours ago
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Flights from Sioux Falls (FSD) to Denver (DEN)
Origin airport
Sioux Falls Regional
Destination airport
Denver Intl.
Airlines serving
American Airlines, Delta, Frontier Airlines, United
Popular airline
United
Distance
483 mi

Frequently asked questions

How much is a United Airlines flight from Sioux Falls Regional Airport (FSD) to Denver Intl. Airport (DEN)?
You'll discover cheap return United Airlines flights from $179 from FSD to DEN by filtering your results from "Price (lowest to highest)" on Expedia. Or look for deals from $109 for a one-way journey.**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.
What is the cheapest month to fly from FSD to DEN with United Airlines?
Look for return or one-way flights to Denver in January or November. You could find lower fares with United Airlines during these off-season months.
What is the cheapest time to book flights from Sioux Falls Regional Airport (FSD) to Denver Intl. Airport (DEN) with United Airlines?
Look for cheap United Airlines flights from Sioux Falls Regional Airport (FSD) to Denver Intl. Airport (DEN) one to three months prior to your departure. 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. Regardless of fare class and itinerary, the best day to book a domestic flight is generally Sunday and the most expensive day is typically 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.
Does United Airlines fly nonstop from Sioux Falls Regional Airport (FSD) to Denver Intl. Airport (DEN)?
You can easily fly from Sioux Falls Regional Airport (FSD) to Denver Intl. Airport (DEN) on one of United Airlines's 28 weekly direct flights. Use Expedia's "Nonstop" and "Airline" filters to find the United Airlines flight that'll get you to DEN at your preferred time.
How long does it take to fly from FSD to DEN with United Airlines?
Leave Sioux Falls Regional Airport (FSD) for Denver Intl. Airport (DEN) on a nonstop United Airlines flight, and you'll be in the air for about 2h 4m.
Which day of the week has the most United Airlines flights from Sioux Falls Regional Airport (FSD) to Denver Intl. Airport (DEN)?
If it's flexibility you're after, Sunday offers the most choice for United Airlines flights from Sioux Falls Regional Airport (FSD) to Denver Intl. Airport (DEN). You can select from 4 different departures.
What is the earliest United Airlines flight from FSD to DEN?
Jetting off from FSD at 5:55AM UTC-6, the earliest United Airlines flight to DEN lands at 7:05AM UTC-7. Traveling earlier in the day means you'll be less likely to experience cancellations.* Not an early riser? The last United Airlines flight from FSD to DEN departs at 5:10PM UTC-6 and touches down at 6:10PM UTC-7.*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.
What airports does United Airlines fly into in Denver?
Board a United Airlines flight from Sioux Falls Regional Airport (FSD) to Denver, and you're most likely to arrive at Denver Intl. Airport (DEN). This is the airline's primary hub here.
Why fly with United Airlines from FSD to DEN?
Depart from FSD to DEN with United Airlines and you'll enjoy a range of perks including a rewarding loyalty program. When booking through Expedia as a United Mileage Plus and One Key™ member, you may also earn OneKeyCash™* to redeem on select future travel purchases.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
What type of plane does United Airlines fly from Sioux Falls Regional Airport (FSD) to Denver Intl. Airport (DEN)?
For the Sioux Falls Regional Airport (FSD) to Denver Intl. Airport (DEN) route, United Airlines typically operates Embraer 175 and Bombardier CRJ700 planes. Don't forget that last-minute changes are possible for operational needs, meaning your flight may be on another aircraft.
Can I change or cancel my United Airlines flight from Sioux Falls Regional Airport (FSD) to Denver Intl. Airport (DEN)?
You can usually change or cancel your flight, although there may be additional fees if your booking was made more than 24 hours ago. Need to keep your options open? Use our "No cancel fee" or "Changes included" filter to find flights that won't charge extra if you have to alter your plans. To make modifications, go to "Trips," select your flight and click on "Manage Booking" for more details.

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