$277 Cheap United flights Denver (DEN) to Sun Valley (SUN)

Apply the “Price (lowest to highest)” filter on Expedia to look for cheap United Airlines round-trip flights from $269 from DEN to SUN. Affordable one-way options from $277 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 Sun Valley are generally cheaper in the quieter months of November and April. Whether you’re in search of a return or one-way ticket, you could score a better deal then.

For cheap United Airlines fares from Denver Intl. Airport (DEN) to Friedman Memorial Airport (SUN), start searching one to three months before your intended departure. Securing domestic flights 34 to 86 days in advance could save you 25% compared to booking just 6 to 12 days ahead. The day you book can also affect what you pay. Sunday is typically the most affordable, while Monday is often the most expensive for domestic flights. You can save 6% on average by booking your flight on a Sunday.**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.

United Airlines has direct flights from Denver Intl. Airport (DEN) to Friedman Memorial Airport (SUN), with 14 departures each week. Simply select the “Nonstop” and “Airline” filters during your search on Expedia to show all direct United Airlines flights to SUN.

From wheels-up to touchdown, a direct United Airlines flight from Denver Intl. Airport (DEN) to Friedman Memorial Airport (SUN) takes approximately 2h 9m.

If it’s flexibility you’re after, Saturday offers the most choice for United Airlines flights from Denver Intl. Airport (DEN) to Friedman Memorial Airport (SUN). Take your pick of 2 different departures.

Departing DEN at 11:25AM UTC-7, the earliest United Airlines flight to SUN lands at 1:38PM UTC-7. Traveling early means you’ll be less likely to encounter delays or cancellations.* Not an early riser? The last United Airlines flight from DEN to SUN departs at 7:20PM UTC-7 and touches down at 9:25PM 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.

Friedman Memorial Airport (SUN) is the primary Sun Valley hub for United Airlines flights from Denver Intl. Airport (DEN).

Journey from DEN to SUN with United Airlines and you’ll 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 may also earn OneKeyCash™* to use on select future travel purchases.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Book a United Airlines flight from Denver Intl. Airport (DEN) to Friedman Memorial Airport (SUN), and you’ll likely be flying on an Embraer 175. Bear in mind though, that the aircraft type can vary due to operational needs.

Depending on the type of ticket you purchased, a fee will generally apply if you cancel or change your booking more than 24 hours after it has been confirmed. To secure tickets with more flexibility, select our “No cancel fee” or “Changes included” filter when looking for flights. For more information on modifying or canceling your reservation, go to “Trips,” select your flight and click on “Manage Booking.”