$124 Cheap Flights from Sun Valley (SUN) to Denver (DEN)

View $124 flight on Tue, Dec 16, 2025Opens in a new window

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

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

Prices were available within the past 7 days and start at $124 for one-way flights and $248 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Wed, Jan 7 - Sun, Jan 11
SUN
Sun Valley
DEN
Denver
$248 Roundtrip, found 14 hours ago
$248
Roundtrip
found 14 hours ago
Select Alaska Airlines flight, departing Wed, Jan 7 from Sun Valley to Denver, returning Sun, Jan 11, priced at $248 found 14 hours ago
United
Wed, Jan 7 - Sun, Jan 11
SUN
Sun Valley
DEN
Denver
$269 Roundtrip, found 14 hours ago
$269
Roundtrip
found 14 hours ago
Select United flight, departing Wed, Jan 7 from Sun Valley to Denver, returning Sun, Jan 11, priced at $269 found 14 hours ago
Alaska Airlines
Tue, Dec 16 - Thu, Dec 18
SUN
Sun Valley
DEN
Denver
$278 Roundtrip, just found
$278
Roundtrip
just found
Select Alaska Airlines flight, departing Tue, Dec 16 from Sun Valley to Denver, returning Thu, Dec 18, priced at $278 just found
United
Tue, Jan 6 - Mon, Jan 12
SUN
Sun Valley
DEN
Denver
$279 Roundtrip, found 3 days ago
$279
Roundtrip
found 3 days ago
Select United flight, departing Tue, Jan 6 from Sun Valley to Denver, returning Mon, Jan 12, priced at $279 found 3 days ago
United
Thu, Jun 4 - Sun, Jun 7
SUN
Sun Valley
DEN
Denver
$288 Roundtrip, found 2 days ago
$288
Roundtrip
found 2 days ago
Select United flight, departing Thu, Jun 4 from Sun Valley to Denver, returning Sun, Jun 7, priced at $288 found 2 days ago
Alaska Airlines
Sun, Nov 16 - Thu, Nov 20
SUN
Sun Valley
DEN
Denver
$289 Roundtrip, found 2 days ago
$289
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Sun, Nov 16 from Sun Valley to Denver, returning Thu, Nov 20, priced at $289 found 2 days ago
Delta
Fri, Dec 5 - Sun, Dec 7
SUN
Sun Valley
DEN
Denver
$289 Roundtrip, found 23 hours ago
$289
Roundtrip
found 23 hours ago
Select Delta flight, departing Fri, Dec 5 from Sun Valley to Denver, returning Sun, Dec 7, priced at $289 found 23 hours ago
United
Fri, Nov 14 - Sat, Nov 15
SUN
Sun Valley
DEN
Denver
$289 Roundtrip, found 2 days ago
$289
Roundtrip
found 2 days ago
Select United flight, departing Fri, Nov 14 from Sun Valley to Denver, returning Sat, Nov 15, priced at $289 found 2 days ago
Hawaiian Airlines
Sat, Dec 6 - Tue, Dec 16
SUN
Sun Valley
DEN
Denver
$291 Roundtrip, found 1 day ago
$291
Roundtrip
found 1 day ago
Select Hawaiian Airlines flight, departing Sat, Dec 6 from Sun Valley to Denver, returning Tue, Dec 16, priced at $291 found 1 day ago
American Airlines
Thu, Dec 25 - Mon, Dec 29
SUN
Sun Valley
DEN
Denver
$349 Roundtrip, found 1 day ago
$349
Roundtrip
found 1 day ago
Select American Airlines flight, departing Thu, Dec 25 from Sun Valley to Denver, returning Mon, Dec 29, priced at $349 found 1 day 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 $299
DEN
Denver Intl.
Cheapest
Average driving time to city center32 min
Flights from $299
Flights from Sun Valley (SUN) to Denver (DEN)
Origin airport
Friedman Memorial
Destination airport
Denver Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Hawaiian Airlines, United
Roundtrip price
$248
Distance
556 mi
Average flight time
1 hour 56 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 January. 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 $124 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?
Get a cheap one-way flight from $124 or cheap return flight from $248 from Friedman Memorial Airport (SUN) to Denver Intl. Airport (DEN) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Friedman Memorial Airport (SUN) to Denver Intl. Airport (DEN)?
Planning your trip for January can help you save, as it's the cheapest month for flights between SUN and DEN. You'll typically find the lowest fares during the off-season.
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 Friedman Memorial Airport (SUN) to Denver Intl. Airport (DEN)?
To find the cheapest airline flying from SUN to DEN, use Expedia's filter tool. Tailor your search based on your travel needs, such as preferred carriers and flight duration. You can then sort your results by "Price (lowest to highest)" to list the most affordable options first.
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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*Available to One Key members.