£214 Cheap Flights from Denver (DEN) to Sun Valley (SUN)

View £214 flight on Thu, 23 Jul 2026Opens in a new window

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

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

Prices were available within the past 7 days and start at £214 for one-way flights and £667 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Thu, 11 Jun - Thu, 18 Jun
DEN
Denver
SUN
Sun Valley
£667 Return, found 1 day ago
£667
Return
found 1 day ago
Select Alaska Airlines flight, departing Thu, 11 Jun from Denver to Sun Valley, returning Thu, 18 Jun, priced at £667 found 1 day ago
Alaska Airlines
Thu, 11 Jun - Thu, 18 Jun
DEN
Denver
SUN
Sun Valley
£686 Return, found 1 day ago
£686
Return
found 1 day ago
Select Alaska Airlines flight, departing Thu, 11 Jun from Denver to Sun Valley, returning Thu, 18 Jun, priced at £686 found 1 day ago
Alaska Airlines
Thu, 11 Jun - Thu, 18 Jun
DEN
Denver
SUN
Sun Valley
£725 Return, found 1 day ago
£725
Return
found 1 day ago
Select Alaska Airlines flight, departing Thu, 11 Jun from Denver to Sun Valley, returning Thu, 18 Jun, priced at £725 found 1 day ago
Alaska Airlines
Fri, 12 Jun - Fri, 19 Jun
DEN
Denver
SUN
Sun Valley
£732 Return, found 1 day ago
£732
Return
found 1 day ago
Select Alaska Airlines flight, departing Fri, 12 Jun from Denver to Sun Valley, returning Fri, 19 Jun, priced at £732 found 1 day ago
Alaska Airlines
Thu, 11 Jun - Thu, 18 Jun
DEN
Denver
SUN
Sun Valley
£734 Return, found 1 day ago
£734
Return
found 1 day ago
Select Alaska Airlines flight, departing Thu, 11 Jun from Denver to Sun Valley, returning Thu, 18 Jun, priced at £734 found 1 day ago
Alaska Airlines
Fri, 12 Jun - Fri, 19 Jun
DEN
Denver
SUN
Sun Valley
£765 Return, found 1 day ago
£765
Return
found 1 day ago
Select Alaska Airlines flight, departing Fri, 12 Jun from Denver to Sun Valley, returning Fri, 19 Jun, priced at £765 found 1 day ago
Alaska Airlines
Thu, 11 Jun - Thu, 18 Jun
DEN
Denver
SUN
Sun Valley
£781 Return, found 1 day ago
£781
Return
found 1 day ago
Select Alaska Airlines flight, departing Thu, 11 Jun from Denver to Sun Valley, returning Thu, 18 Jun, priced at £781 found 1 day ago
Alaska Airlines
Thu, 11 Jun - Thu, 18 Jun
DEN
Denver
SUN
Sun Valley
£801 Return, found 1 day ago
£801
Return
found 1 day ago
Select Alaska Airlines flight, departing Thu, 11 Jun from Denver to Sun Valley, returning Thu, 18 Jun, priced at £801 found 1 day ago
Alaska Airlines
Thu, 11 Jun - Thu, 18 Jun
DEN
Denver
SUN
Sun Valley
£806 Return, found 1 day ago
£806
Return
found 1 day ago
Select Alaska Airlines flight, departing Thu, 11 Jun from Denver to Sun Valley, returning Thu, 18 Jun, priced at £806 found 1 day ago
Alaska Airlines
Thu, 11 Jun - Thu, 18 Jun
DEN
Denver
SUN
Sun Valley
£811 Return, found 1 day ago
£811
Return
found 1 day ago
Select Alaska Airlines flight, departing Thu, 11 Jun from Denver to Sun Valley, returning Thu, 18 Jun, priced at £811 found 1 day ago

Frequently asked questions

What is the cheapest month to fly from Denver, CO (DEN-Denver Intl.) to Sun Valley, ID (SUN-Friedman Memorial)?
October is typically the cheapest month to fly from Denver, CO (DEN-Denver Intl.) to Sun Valley, ID (SUN-Friedman Memorial), with average return fares of approximately £245. This is about 24% lower than the average price throughout the year. October often sees lower prices as it's outside the peak summer and winter travel seasons, meaning less demand for flights. Other cheap months to fly from Denver, CO (DEN-Denver Intl.) to Sun Valley, ID (SUN-Friedman Memorial) include January and June.
Which airlines fly direct from Denver, CO (DEN-Denver Intl.) to Sun Valley, ID (SUN-Friedman Memorial)?
Enter DEN to SUN and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
How do I find cheap flights from Denver, CO (DEN-Denver Intl.) to Sun Valley, ID (SUN-Friedman Memorial)?
To find a cheap flight from Denver, CO (DEN-Denver Intl.) to Sun Valley, ID (SUN-Friedman Memorial), 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 Denver, CO (DEN-Denver Intl.) to Sun Valley, ID (SUN-Friedman Memorial)?
The best airline to fly with from Denver, CO (DEN-Denver Intl.) (DEN) to Sun Valley, ID (SUN-Friedman Memorial) (SUN) will differ from traveller to traveller. If you like to fly early, UA offers early morning flights. If price is the most important factor, UA typically offers the lowest fares. AS offers the most daily flights from Denver, CO (DEN-Denver Intl.) (DEN) to Sun Valley, ID (SUN-Friedman Memorial) (SUN), which is brilliant 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 Denver, CO (DEN-Denver Intl.) to Sun Valley, ID (SUN-Friedman Memorial)?
Based on booking data from the past year, the best time to fly from Denver International Airport (DEN) to Sun Valley, ID (SUN-Friedman Memorial) (SUN) depends on what you're looking for. If you're seeking the lowest fares, October and June are typically the cheapest months, with average return flights around £245. If you prioritize more flight options and a popular travel period, September is a good choice, though prices might be slightly higher. Since there isn't a month that is both cheapest and most popular, you can choose between saving money in October or June, or having more flexibility with flight times in September.
How many flights per day from Denver, CO (DEN-Denver Intl.) to Sun Valley, ID (SUN-Friedman Memorial)?
When flying from Denver, CO (DEN-Denver Intl.) to Sun Valley, ID (SUN-Friedman Memorial), you'll find approximately 2 nonstop flights per day. For even more choice, look at flights that include layovers, as there are around 9 connecting flights daily. Some common connection points include Portland Intl. (PDX), San Diego Intl. (SAN), and Seattle - Tacoma Intl. (SEA).
What is the earliest flight from Denver, CO (DEN-Denver Intl.) to Sun Valley, ID (SUN-Friedman Memorial)?
The earliest flight from Denver International Airport (DEN) to Friedman Memorial (SUN) typically departs at approximately 5:15 AM local time, operated by Delta. This is a seasonal service active in January and February. An early departure like this can help you maximise your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Denver, CO (DEN-Denver Intl.) to Sun Valley, ID (SUN-Friedman Memorial)?
If you're flying from Denver, CO (DEN-Denver Intl.) to Sun Valley, ID (SUN-Friedman Memorial), you'll typically find the most flights on a Friday, with around 19 flights available. This gives you plenty of options to choose from for your travel plans. Major airlines on this route include United Airlines, Delta Air Lines, and Alaska Airlines. Looking at the overall week, Friday offers notably more flight options compared to other days.
What are the most popular departure times for flights from Denver, CO (DEN-Denver Intl.) to Sun Valley, ID (SUN-Friedman Memorial)?
The most popular departure times for flights from Denver International Airport (DEN) to Friedman Memorial (SUN) are in the early morning, from 6am to 9am. Approximately 28% of passengers prefer this time window. Many major carriers, including Delta Air Lines, Alaska Airlines and United Airlines, offer flights during this window. This timing works well because it allows you to get an early start on your travel day and arrive at your destination with plenty of time.
How long does it take to fly from Denver, CO (DEN-Denver Intl.) to Sun Valley, ID (SUN-Friedman Memorial)?
Flying nonstop from DEN to SUN takes around 2 hours 20 minutes, with the route covering approximately 557 miles. Flights with a layover typically take 4 hours longer than direct options. 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 Denver, CO (DEN-Denver Intl.) to Sun Valley, ID (SUN-Friedman Memorial)?
Select the "Business class" and "First class" filters when looking for DEN to SUN flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a Denver, CO (DEN-Denver Intl.) to Sun Valley, ID (SUN-Friedman Memorial) flight with Expedia?
It's easy to earn miles on a Denver, CO (DEN-Denver Intl.) to Sun Valley, ID (SUN-Friedman Memorial) 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 Sun Valley from Denver Intl. (DEN)?
From Denver Intl. (DEN), you can fly directly into Friedman Memorial (SUN) to reach Sun Valley. Some flights may connect through major hubs like San Diego Intl. (SAN), Portland Intl. (PDX), Seattle - Tacoma Intl. (SEA) before reaching Sun Valley. 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 Denver, CO (DEN-Denver Intl.) to Sun Valley, ID (SUN-Friedman Memorial) at the last minute?
Typically, booking a last minute flight from Denver, CO (DEN-Denver Intl.) to Sun Valley, ID (SUN-Friedman Memorial) 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 Denver, CO (DEN-Denver Intl.) to Sun Valley, ID (SUN-Friedman Memorial) flight and hotel package?
Securing a Denver, CO (DEN-Denver Intl.) to Sun Valley, ID (SUN-Friedman Memorial) flight and hotel package 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 Denver, CO (DEN-Denver Intl.) to Sun Valley, ID (SUN-Friedman Memorial)?
If you booked your Denver, CO (DEN-Denver Intl.) to Sun Valley, ID (SUN-Friedman Memorial) 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.

Travel information

Origin airport
Denver Intl.
Destination airport
Friedman Memorial
Return price
£666
Distance
891 km
Average flight time
2 hours 5 mins

Book with confidence

Compare flights from Denver to Sun Valley easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from Denver to Sun Valley. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to Friedman Memorial in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Denver Intl. to Friedman Memorial.  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from Denver Intl. (DEN) to Friedman Memorial (SUN)

The easiest way to view the best deals on flights from Denver to Sun Valley today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Denver Intl. to Friedman Memorial start at just £667 and range up to £811.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near Denver and Sun Valley
  • booking your flight during June, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your Denver to Sun Valley flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Denver Intl. to Friedman Memorial for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Compare flights from Denver to Sun Valley easily and book with confidence

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