$104 Cheap Flights from Sun Valley (SUN) to Denver (DEN)

View $104 flight on Sat, Jan 24, 2026Opens in a new window

Popular airlines from Sun Valley, ID (SUN-Friedman Memorial) to Denver Intl. Airport (DEN)

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Cheap Flights from Sun Valley to Denver (SUN-DEN)

Prices were available within the past 7 days and start at $104 for one-way flights and $209 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Fri, Sep 26 - Sat, Sep 27
SUN
Sun Valley
DEN
Denver
$209 Roundtrip, found 1 day ago
$209
Roundtrip
found 1 day ago
Select United flight, departing Fri, Sep 26 from Sun Valley to Denver, returning Sat, Sep 27, priced at $209 found 1 day ago
Hawaiian Airlines
Fri, Jan 9 - Thu, Jan 22
SUN
Sun Valley
DEN
Denver
$228 Roundtrip, found 2 days ago
$228
Roundtrip
found 2 days ago
Select Hawaiian Airlines flight, departing Fri, Jan 9 from Sun Valley to Denver, returning Thu, Jan 22, priced at $228 found 2 days ago
Delta
Sat, Sep 13 - Tue, Sep 16
SUN
Sun Valley
DEN
Denver
$229 Roundtrip, found 1 hour ago
$229
Roundtrip
found 1 hour ago
Select Delta flight, departing Sat, Sep 13 from Sun Valley to Denver, returning Tue, Sep 16, priced at $229 found 1 hour ago
Delta
Sat, Sep 13 - Fri, Sep 19
SUN
Sun Valley
DEN
Denver
$239 Roundtrip, found 1 hour ago
$239
Roundtrip
found 1 hour ago
Select Delta flight, departing Sat, Sep 13 from Sun Valley to Denver, returning Fri, Sep 19, priced at $239 found 1 hour ago
United
Sat, Aug 23 - Tue, Aug 26
SUN
Sun Valley
DEN
Denver
$249 Roundtrip, found 1 day ago
$249
Roundtrip
found 1 day ago
Select United flight, departing Sat, Aug 23 from Sun Valley to Denver, returning Tue, Aug 26, priced at $249 found 1 day ago
United
Fri, Aug 15 - Sun, Aug 17
SUN
Sun Valley
DEN
Denver
$259 Roundtrip, found 1 day ago
$259
Roundtrip
found 1 day ago
Select United flight, departing Fri, Aug 15 from Sun Valley to Denver, returning Sun, Aug 17, priced at $259 found 1 day ago
Delta
Mon, Sep 8 - Wed, Sep 17
SUN
Sun Valley
DEN
Denver
$264 Roundtrip, found 6 days ago
$264
Roundtrip
found 6 days ago
Select Delta flight, departing Mon, Sep 8 from Sun Valley to Denver, returning Wed, Sep 17, priced at $264 found 6 days ago
Delta
Tue, Aug 5 - Tue, Aug 19
SUN
Sun Valley
DEN
Denver
$269 Roundtrip, found 2 days ago
$269
Roundtrip
found 2 days ago
Select Delta flight, departing Tue, Aug 5 from Sun Valley to Denver, returning Tue, Aug 19, priced at $269 found 2 days ago
American Airlines
Sat, Feb 14 - Wed, Feb 25
SUN
Sun Valley
DEN
Denver
$299 Roundtrip, found 1 day ago
$299
Roundtrip
found 1 day ago
Select American Airlines flight, departing Sat, Feb 14 from Sun Valley to Denver, returning Wed, Feb 25, priced at $299 found 1 day ago
Alaska Airlines
Tue, Sep 23 - Fri, Sep 26
SUN
Sun Valley
DEN
Denver
$423 Roundtrip, found 21 hours ago
$423
Roundtrip
found 21 hours ago
Select Alaska Airlines flight, departing Tue, Sep 23 from Sun Valley to Denver, returning Fri, Sep 26, priced at $423 found 21 hours ago

Alternative airports near Denver

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

Select flight to Denver Intl. DEN. Cheapest option available. Average driving time to city center is 32 minutes. Flights from $289
DEN
Denver Intl.
Cheapest
Average driving time to city center32 min
Flights from $289
Flights from Sun Valley (SUN) to Denver (DEN)
Origin airport
Friedman Memorial
Destination airport
Denver Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, United
Roundtrip price
$209
Distance
556 mi
Average flight time
2 hours 4 mins

Sun Valley to Denver Flights

The cheapest times to fly from Sun Valley to Denver

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Sun Valley to Denver are during the month of September. You can find some of the cheapest flights from Sun Valley to Denver with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Sun Valley to Denver

Sunday is one of the best days to book for cheap flights from Sun Valley to Denver: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Sun Valley to Denver

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Sun Valley to Denver in 2025. You can also book with separate airlines for your outbound and return journeys, from $104 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Sun Valley to Denver flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Sun Valley to Denver airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Friedman Memorial Airport (SUN) to Denver Intl. Airport (DEN) cost?
You'll find cheap return tickets from Friedman Memorial Airport (SUN) to Denver Intl. Airport (DEN) starting at $269. Book your seat and get ready to go. This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a United flight leaving SUN on August 15 2025 and touching down at DEN. The price was last updated on July 23 2025 and has not changed since.
What is the cheapest month to fly from SUN to DEN?
The cheapest flights from SUN to DEN are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from Friedman Memorial Airport (SUN) to Denver Intl. Airport (DEN)?
You can fly directly from Friedman Memorial Airport (SUN) to Denver Intl. Airport (DEN) on a United Airlines flight.
What is the cheapest airline that flies from SUN to DEN?
With prices as low as $255 for a one-way journey from SUN to DEN, United is currently the cheapest airline flying this route. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from SUN on September 29 2025. Prices were last updated on July 23 2025 and have not changed since.
How many flights per day from Friedman Memorial Airport (SUN) to Denver Intl. Airport (DEN)?
When flying out of Friedman Memorial Airport (SUN), you'll have your pick from an average of 2 daily nonstop flights to Denver Intl. Airport (DEN).
What are the most popular departure times for flights from Friedman Memorial Airport (SUN) to Denver Intl. Airport (DEN)?
The 7 AM departures from SUN to DEN are typically the busiest. Greater demand means you'll likely pay more for these departures. If you're looking to save, book during off-peak hours.
What day of the week has the most flights from SUN to DEN?
Friday offers the most flights from Friedman Memorial Airport (SUN) to Denver Intl. Airport (DEN). Consider traveling on this day and you'll have the best chance of finding a departure that fits your plans.
What is the earliest flight from Friedman Memorial Airport (SUN) to Denver Intl. Airport (DEN)?
Friedman Memorial Airport (SUN)'s earliest flight to Denver Intl. Airport (DEN) leaves at approximately 7:00AM UTC-7. With a flight time of 2h 12m, you'll arrive at around 9:12AM UTC-7.
How long does it take to fly from Friedman Memorial Airport (SUN) to Denver Intl. Airport (DEN)?
The average flight time from SUN to DEN is 2 hours and 7 minutes, covering a distance of 560 mi.
What airline has the least delays from SUN to DEN?
With 81% of journeys usually arriving on schedule, United Airlines has the best on-time performance for direct flights from Friedman Memorial Airport (SUN) to Denver Intl. Airport (DEN). To monitor your flight status and get notifications about any changes, head to the Expedia App.
What is the best time to fly from Friedman Memorial Airport (SUN) to Denver Intl. Airport (DEN)?
To reach Denver Intl. Airport (DEN) on time, select a flight that leaves Friedman Memorial Airport (SUN) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this time.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for Denver from Friedman Memorial Airport (SUN)?
Denver Intl. Airport (DEN) is the only airport in Denver with direct flights from Friedman Memorial Airport (SUN). Compare the available options and discover affordable fares on Expedia.
Is it cheaper to buy a plane ticket from Friedman Memorial Airport (SUN) to Denver Intl. Airport (DEN) last-minute?
Last-minute fares from SUN to DEN are usually more expensive. To secure the lowest rates, start looking for flights well ahead of time. That said, if your travel plans are flexible, it's possible to score a cheap ticket just before your departure.
Is it cheaper to book a SUN to DEN flight and hotel package?
Securing a SUN to DEN flight and hotel package is typically cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Pick from our wide range of hotels and then add flights, activities and car rentals to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Friedman Memorial Airport (SUN) to Denver Intl. Airport (DEN)?
Generally, it's possible to reschedule or cancel your SUN to DEN flight. However, if it's been more than 24 hours since booking, additional fees may apply. Refer to your airline's policies in your itinerary to see what changes are possible and if any costs are involved. You'll also find further details on our Customer Service portal.

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