$207 Cheap Flights from Denver (DEN) to Sun Valley (SUN)
Popular airlines from Denver Intl. Airport (DEN) to Sun Valley, ID (SUN-Friedman Memorial)
Alaska AirlinesAlaska Airlines
DeltaDelta
UnitedUnited
American AirlinesAmerican Airlines
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Cheap Flights from Denver to Sun Valley (DEN-SUN)
Alternative airports near Sun Valley
Prices were available within the past 7 days. Prices and availability are subject to change.
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Denver (DEN) to Sun Valley (SUN) at a glance
Travel from Denver (DEN) to Sun Valley (SUN) with a range of airlines offering convenient options on this domestic short-haul route. Compare various full-service carriers to discover the itinerary that aligns with your budget and schedule as you plan your visit to explore the renowned attractions and neighborhoods of Sun Valley. Here, you'll find essential information about flights from Denver International Airport (DEN) to Friedman Memorial Airport (SUN).
- Fastest flight duration: around 2 hours non-stop
- Route distance: roughly 600 miles (970 km)
- Flights per week: around 8 departures on average
- Typical fares (one-way): economy tickets often range from $115–$520, depending on seasonality and how far ahead you book
Flights from Denver International Airport (DEN) to Friedman Memorial Airport (SUN)
According to recent traveler bookings, here are the top airlines favored for flights from Denver to Sun Valley, offering both non-stop and one-stop options. Common layovers include Salt Lake City International Airport (SLC) with a layover of about 55 minutes and Seattle-Tacoma International Airport (SEA) with a layover of approximately 1 hour and 45 minutes. This variety allows you to balance price, total travel time, and cabin class, helping you find the ideal itinerary for your journey.
- United: This full-service airline provides non-stop flights, dominating the route with around 87% of departures. One-way ticket prices usually fall between $115 and $580, with a total travel duration of 2 hours.
- Delta: Operating one-stop service, this full-service carrier represents about 12% of flights on this route. One-way fares generally range from $145 to $635, featuring an in-flight duration of 2 hours and 45 minutes, leading to a total journey time of approximately 4 hours and 45 minutes, including layover.
Travelers can enhance their journey from Denver to Sun Valley with an upgrade to first-class service offered by United on this route.
Alternative route from Denver (DEN) to Sun Valley (SUN)
- Fort Collins to Sun Valley (FNL-SUN): Located about 45 miles from Denver International Airport (DEN), Fort Collins-Loveland Municipal Airport (FNL) serves as a convenient departure point.
How to find the best prices for flights from Denver (DEN) to Sun Valley (SUN)
Getting some of the best deals on flights from Denver to Sun Valley is all about timing and flexibility. Here are some key tips to help you save:
- Best times to book and fly: cheaper fares are usually found when booking 2-8 weeks in advance, which coincides with when most travelers make their reservations. Evening departures (6pm-12am) often offer lower prices, while morning flights (5am-12pm) are the most popular. Additionally, flying on Friday generally results in cheaper fares, even though Thursday is the busiest travel day.
- Set up price alerts: stay updated on price changes by using Expedia's Price Tracker. Receive alerts when fares drop for your selected route.
- Bundle and save: bundle your flight and hotel to save on Expedia, or unlock a hotel deal after booking your flight.* Find Sun Valley hotel and flight deals.
- Compare flight options: use Expedia's search tool to compare airlines, routes, direct vs. non-direct flights, and flight times. You can also sort by price to find the most affordable options.
- Stay flexible with dates: being open to different travel days can sometimes help you find better prices on flights and hotels.
- Think about luggage: nowadays, it's important to check the airline's baggage policies to find the best value. That may be paying for an additional carry-on bag or booking a ticket with checked luggage included. Either way, double-check your allowance before confirming your booking to avoid excess baggage fees at the airport.
*Members only. Savings vary and are not available on all bundles. Select hotels.
Arriving at Friedman Memorial Airport from Denver International Airport
Sun Valley welcomes travelers from Denver with a range of transport options based on price, convenience, and proximity. Sun Valley city center is approximately a 30-minute drive (covering about 18 miles) from Friedman Memorial Airport, depending on traffic. Here's how to reach Sun Valley efficiently:
- Hotel transfer: Transfers offer a convenient way to reach your hotel in Sun Valley, with options including free hotel shuttles and private rides, which can be arranged in advance with your hotel.
- Car rental: Renting a car from Friedman Memorial Airport is a great option if you plan to explore and sightsee beyond the city. Browse cheap car rentals at Friedman Memorial Airport on Expedia.
- Taxi/ride-hailing: Taxis and ride-hailing services may be available from designated pickup areas outside the terminal, check locally on arrival.
Denver to Sun Valley Flights
The cheapest times to fly from Denver to Sun Valley
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 Denver to Sun Valley are during the month of January. You can find some of the cheapest flights from Denver to Sun Valley with Expedia's search tool and vast selection of airlines.
The best time to book a flight from Denver to Sun Valley
Sunday is one of the best days to book for cheap flights from Denver to Sun Valley: 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 Denver to Sun Valley
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 Denver to Sun Valley in 2026. You can also book with separate airlines for your outbound and return journeys, from $207 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 Denver to Sun Valley 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 Denver to Sun Valley 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 Denver, CO (DEN-Denver Intl.) to Sun Valley, ID (SUN-Friedman Memorial) cost?
You can find cheap one-way flights from $207 and cheap return flights $403 Denver, CO (DEN-Denver Intl.) to Sun Valley, ID (SUN-Friedman Memorial) with Expedia. One-way flights typically cost between $244 and $962, and return flights often range between $389 and $1270. 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 Denver, CO (DEN-Denver Intl.) to Sun Valley, ID (SUN-Friedman Memorial) 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 Denver, CO (DEN-Denver Intl.) to Sun Valley, ID (SUN-Friedman Memorial)?
October is the cheapest month to fly from Denver (DEN) to Sun Valley (SUN), with average round-trip fares around $328. This price is about 24% lower than the average throughout the year, as the fall season sees a decrease in travel demand. Other affordable months to fly from Denver to Sun Valley include January and June.
*Averages based on flights available on Expedia in the last year.
Which airlines fly direct from Denver, CO (DEN-Denver Intl.) to Sun Valley, ID (SUN-Friedman Memorial)?
United offers around 13 weekly direct flights from DEN to SUN.
What is the cheapest airline that flies from Denver, CO (DEN-Denver Intl.) to Sun Valley, ID (SUN-Friedman Memorial)?
American Airlines is one of the cheapest airlines offering connecting flights from Denver (DEN) to Sun Valley (SUN), with round-trip tickets starting from around $340. 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 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) to Sun Valley, ID (SUN) 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 Denver, CO (DEN) to Sun Valley, ID (SUN), 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 Denver, CO (DEN-Denver Intl.) to Sun Valley, ID (SUN-Friedman Memorial)?
Flying from Denver, CO (DEN) to Sun Valley, ID (SUN) is best in June and October. You can find return flights for about $328, which is a great deal for this scenic route. June is perfect for enjoying the summer activities in Sun Valley, while October offers beautiful fall foliage.
*Prices based on flights available on Expedia in the last year.
How many flights per day from Denver, CO (DEN-Denver Intl.) to Sun Valley, ID (SUN-Friedman Memorial)?
On average, there are around 2 nonstop flights per day from Denver Intl. (DEN) to Friedman Memorial (SUN). For more options, look at flights that include layovers.
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 Airport (SUN) usually departs at 5:15 AM. This seasonal service is available in January and February, allowing you to maximize your time in Sun Valley. 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 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. About 26% of passengers prefer this time window. Many major carriers, including Delta Airlines, Alaska Airlines and United Airlines, offer flights during this window. This timing is popular because it allows travelers to arrive at their destination early in the day.
How long does it take to fly from Denver, CO (DEN-Denver Intl.) to Sun Valley, ID (SUN-Friedman Memorial)?
A nonstop flight from DEN to SUN typically takes around 2 hours 20 minutes, covering approximately 557 miles. Connecting flights on this route usually add 4 hours 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 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 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. Airport |
|---|---|
Destination airport | Sun Valley, ID |
Distance | 556 miles away |
Airlines serving | Alaska Airlines, Delta, United, American Airlines |
Popular airline | Alaska Airlines |
Roundtrip price | $403 |
Average flight time | 2 hours 2 mins |