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

View $104 flight on Sat, Apr 11, 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 $197 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Fri, May 1 - Sun, May 3
SUN
Sun Valley
DEN
Denver
$197 Roundtrip, found 19 hours ago
$197
Roundtrip
found 19 hours ago
Select Delta flight, departing Fri, May 1 from Sun Valley to Denver, returning Sun, May 3, priced at $197 found 19 hours ago
Delta
Fri, May 1 - Sun, May 3
SUN
Sun Valley
DEN
Denver
$232 Roundtrip, found 19 hours ago
$232
Roundtrip
found 19 hours ago
Select Delta flight, departing Fri, May 1 from Sun Valley to Denver, returning Sun, May 3, priced at $232 found 19 hours ago
Alaska Airlines
Tue, Mar 3 - Sat, Mar 7
SUN
Sun Valley
DEN
Denver
$252 Roundtrip, found 3 days ago
$252
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Tue, Mar 3 from Sun Valley to Denver, returning Sat, Mar 7, priced at $252 found 3 days ago
Hawaiian Airlines
Wed, Feb 25 - Tue, Mar 10
SUN
Sun Valley
DEN
Denver
$252 Roundtrip, found 5 days ago
$252
Roundtrip
found 5 days ago
Select Hawaiian Airlines flight, departing Wed, Feb 25 from Sun Valley to Denver, returning Tue, Mar 10, priced at $252 found 5 days ago
American Airlines
Sat, Feb 14 - Sun, Feb 15
SUN
Sun Valley
DEN
Denver
$257 Roundtrip, found 1 day ago
$257
Roundtrip
found 1 day ago
Select American Airlines flight, departing Sat, Feb 14 from Sun Valley to Denver, returning Sun, Feb 15, priced at $257 found 1 day ago
Alaska Airlines
Fri, Mar 6 - Tue, Mar 10
SUN
Sun Valley
DEN
Denver
$262 Roundtrip, found 3 days ago
$262
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Fri, Mar 6 from Sun Valley to Denver, returning Tue, Mar 10, priced at $262 found 3 days ago
Delta
Fri, Apr 3 - Sun, Apr 5
SUN
Sun Valley
DEN
Denver
$266 Roundtrip, found 1 day ago
$266
Roundtrip
found 1 day ago
Select Delta flight, departing Fri, Apr 3 from Sun Valley to Denver, returning Sun, Apr 5, priced at $266 found 1 day ago
Delta
Sat, Feb 14 - Sun, Feb 15
SUN
Sun Valley
DEN
Denver
$267 Roundtrip, found 1 day ago
$267
Roundtrip
found 1 day ago
Select Delta flight, departing Sat, Feb 14 from Sun Valley to Denver, returning Sun, Feb 15, priced at $267 found 1 day ago
Hawaiian Airlines
Tue, Mar 3 - Tue, Mar 10
SUN
Sun Valley
DEN
Denver
$277 Roundtrip, found 4 days ago
$277
Roundtrip
found 4 days ago
Select Hawaiian Airlines flight, departing Tue, Mar 3 from Sun Valley to Denver, returning Tue, Mar 10, priced at $277 found 4 days ago
United
Thu, Feb 26 - Sun, Mar 1
SUN
Sun Valley
DEN
Denver
$369 Roundtrip, found 4 hours ago
$369
Roundtrip
found 4 hours ago
Select United flight, departing Thu, Feb 26 from Sun Valley to Denver, returning Sun, Mar 1, priced at $369 found 4 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 $384
DEN
Denver Intl.
Cheapest
Average driving time to city center32 min
Flights from $384
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
$196
Distance
556 mi
Average flight time
2 hours 9 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 May. 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 2026. 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 Sun Valley, ID (SUN-Friedman Memorial) to Denver, CO (DEN-Denver Intl.) cost?
You can find cheap one-way flights from $104 and cheap return flights from $197 Sun Valley, ID (SUN-Friedman Memorial) to Denver, CO (DEN-Denver Intl.) with Expedia. One-way flights typically cost between $218 and $1156, and return flights often range between $374 and $1410. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Sun Valley, ID (SUN-Friedman Memorial) to Denver, CO (DEN-Denver Intl.) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Sun Valley, ID (SUN-Friedman Memorial) to Denver, CO (DEN-Denver Intl.)?
September is the most affordable month to fly from Sun Valley (SUN) to Denver (DEN), with average return fares around $274. This is about 26% lower than the average price throughout the year, as travel demand tends to decrease after the summer. Other economical months to consider are July and August.*Averages based on flights available on Expedia in the last year.
Which airlines fly direct from Sun Valley, ID (SUN-Friedman Memorial) to Denver, CO (DEN-Denver Intl.)?
You can fly direct from SUN to DEN on United, with around 13 flights per week.
What is the cheapest airline that flies from Sun Valley, ID (SUN-Friedman Memorial) to Denver, CO (DEN-Denver Intl.)?
American Airlines is one of the cheapest airlines offering connecting flights from Friedman Memorial (SUN) to Denver Intl. (DEN), with round-trip tickets starting from around $294. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from Sun Valley, ID (SUN-Friedman Memorial) to Denver, CO (DEN-Denver Intl.)?
To find a cheap flight from Sun Valley, ID (SUN-Friedman Memorial) to Denver, CO (DEN-Denver Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best airline to fly with from Sun Valley, ID (SUN-Friedman Memorial) to Denver, CO (DEN-Denver Intl.)?
The best airline to fly with from Sun Valley, ID (SUN) to Denver, CO (DEN) will differ from traveler to traveler. If you like to fly early, United offers early morning flights. If price is the most important factor, United typically offers the lowest fares. Alaska Airlines offers the most daily flights from SUN to DEN, which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.
What is the best time to fly from Sun Valley, ID (SUN-Friedman Memorial) to Denver, CO (DEN-Denver Intl.)?
For flights from Sun Valley (SUN) to Denver (DEN), September and August are the best months to consider. These months offer lower average prices around $274 for a return flight, making them an excellent choice for travelers looking for value. Enjoy the beautiful mountain scenery during this time!*Prices based on flights available on Expedia in the last year.
How many flights per day from Sun Valley, ID (SUN-Friedman Memorial) to Denver, CO (DEN-Denver Intl.)?
There are approximately 2 nonstop flights per day from Friedman Memorial (SUN) to Denver Intl. (DEN). For more options, look at flights that include layovers.
What is the earliest flight from Sun Valley, ID (SUN-Friedman Memorial) to Denver, CO (DEN-Denver Intl.)?
The earliest flight from Sun Valley (SUN) to Denver (DEN) typically departs at around 7:00 AM, operated by United Airlines. This seasonal service is available in December, allowing you to make the most of your day in Denver. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from Sun Valley, ID (SUN-Friedman Memorial) to Denver, CO (DEN-Denver Intl.)?
The most popular departure times for flights from Sun Valley, ID (SUN) to Denver, CO (DEN) are in the afternoon, from 12pm to 3pm. About 36% of passengers prefer this time window. Many major carriers, including United Airlines and Delta Air Lines, offer flights during this window. This timing is favored as it allows you to enjoy a relaxed morning before your flight.
How long does it take to fly from Sun Valley, ID (SUN-Friedman Memorial) to Denver, CO (DEN-Denver Intl.)?
A nonstop flight from SUN to DEN typically takes around 2 hours, covering approximately 557 miles. Connecting flights on this route usually add 5 hours 30 minutes to your travel time. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Sun Valley, ID (SUN-Friedman Memorial) to Denver, CO (DEN-Denver Intl.)?
You can fly first class between SUN and DEN. First class cabins are available on:

  • Delta Air Lines
  • United Airlines
  • American Airlines

How much is a business class flight from Sun Valley, ID (SUN-Friedman Memorial) to Denver, CO (DEN-Denver Intl.)?
A non-stop, one-way business class flight from Sun Valley, ID (SUN) to Denver, CO (DEN) is usually around $403 - $603. Prices often fluctuate based on seasonality and how early you book. You may also be able to find a cheaper business class journey between Sun Valley, ID (SUN-Friedman Memorial) to Denver, CO (DEN-Denver Intl.) if you opt for a connecting flight.*Prices based on flights available on Expedia in the last year.
How do I earn miles on a Sun Valley, ID (SUN-Friedman Memorial) to Denver, CO (DEN-Denver Intl.) flight with Expedia?
It's easy to earn miles on a Sun Valley, ID (SUN-Friedman Memorial) to Denver, CO (DEN-Denver Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Denver from Friedman Memorial (SUN)?
If you're planning to travel to Denver from Friedman Memorial (SUN), you can fly into Denver Intl. (DEN) Some flights may connect through major hubs like Seattle - Tacoma Intl. (SEA), Salt Lake City Intl. (SLC), San Francisco Intl. (SFO) before reaching Denver. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Sun Valley, ID (SUN-Friedman Memorial) to Denver, CO (DEN-Denver Intl.) at the last minute?
Typically, booking a last minute flight from Sun Valley, ID (SUN-Friedman Memorial) to Denver, CO (DEN-Denver Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Sun Valley, ID (SUN-Friedman Memorial) to Denver, CO (DEN-Denver Intl.) flight and hotel package?
Securing a Sun Valley, ID (SUN-Friedman Memorial) to Denver, CO (DEN-Denver Intl.) Denver Vacation Packages is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Sun Valley, ID (SUN-Friedman Memorial) to Denver, CO (DEN-Denver Intl.)?
If you booked your Sun Valley, ID (SUN-Friedman Memorial) to Denver, CO (DEN-Denver Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

*Flight schedules are subject to change.

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*Available to One Key members.