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$200 Cheap Flights from Sun Valley (SUN) to Denver (DEN)

View $200 flight on Wed, Aug 26, 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 $200 for one-way flights and $401 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Tue, Aug 25 - Thu, Sep 10
SUN
Sun Valley
DEN
Denver
$401 Roundtrip, found 3 days ago
$401
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Tue, Aug 25 from Sun Valley to Denver, returning Thu, Sep 10, priced at $401 found 3 days ago
Alaska Airlines
Tue, Sep 1 - Sat, Sep 5
SUN
Sun Valley
DEN
Denver
$416 Roundtrip, found 2 days ago
$416
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Tue, Sep 1 from Sun Valley to Denver, returning Sat, Sep 5, priced at $416 found 2 days ago
American Airlines
Wed, Dec 30 - Wed, Jan 6
SUN
Sun Valley
DEN
Denver
$418 Roundtrip, found 4 days ago
$418
Roundtrip
found 4 days ago
Select American Airlines flight, departing Wed, Dec 30 from Sun Valley to Denver, returning Wed, Jan 6, priced at $418 found 4 days ago
Alaska Airlines
Tue, Aug 25 - Thu, Sep 10
SUN
Sun Valley
DEN
Denver
$419 Roundtrip, found 23 hours ago
$419
Roundtrip
found 23 hours ago
Select Alaska Airlines flight, departing Tue, Aug 25 from Sun Valley to Denver, returning Thu, Sep 10, priced at $419 found 23 hours ago
Alaska Airlines
Mon, Aug 24 - Wed, Sep 9
SUN
Sun Valley
DEN
Denver
$421 Roundtrip, found 6 days ago
$421
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Mon, Aug 24 from Sun Valley to Denver, returning Wed, Sep 9, priced at $421 found 6 days ago
Alaska Airlines
Tue, Sep 1 - Sat, Sep 5
SUN
Sun Valley
DEN
Denver
$421 Roundtrip, found 2 days ago
$421
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Tue, Sep 1 from Sun Valley to Denver, returning Sat, Sep 5, priced at $421 found 2 days ago
Alaska Airlines
Tue, Aug 25 - Thu, Sep 10
SUN
Sun Valley
DEN
Denver
$426 Roundtrip, found 3 days ago
$426
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Tue, Aug 25 from Sun Valley to Denver, returning Thu, Sep 10, priced at $426 found 3 days ago
Alaska Airlines
Tue, Aug 25 - Thu, Sep 10
SUN
Sun Valley
DEN
Denver
$431 Roundtrip, found 3 days ago
$431
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Tue, Aug 25 from Sun Valley to Denver, returning Thu, Sep 10, priced at $431 found 3 days ago
United
Tue, Sep 1 - Sat, Sep 5
SUN
Sun Valley
DEN
Denver
$459 Roundtrip, found 2 days ago
$459
Roundtrip
found 2 days ago
Select United flight, departing Tue, Sep 1 from Sun Valley to Denver, returning Sat, Sep 5, priced at $459 found 2 days ago
Delta
Wed, Sep 23 - Wed, Sep 30
SUN
Sun Valley
DEN
Denver
$479 Roundtrip, found 2 days ago
$479
Roundtrip
found 2 days ago
Select Delta flight, departing Wed, Sep 23 from Sun Valley to Denver, returning Wed, Sep 30, priced at $479 found 2 days 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 $484
DEN
Denver Intl.
Cheapest
Average driving time to city center32 min
Flights from $484

What you need to know for your flight from Friedman Memorial to Denver Intl.

Sun Valley (SUN) to Denver (DEN) at a glance

Travel between Sun Valley (SUN) and Denver (DEN) with a range of airlines offering convenient flights on this domestic short-haul route. Explore options for your journey from Friedman Memorial Airport to Denver International Airport, allowing you to compare choices that align with your budget and schedule. Whether you're drawn to Denver's iconic attractions or vibrant neighborhoods, you'll find the perfect itinerary to kick off your adventure.

  • 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–$470, depending on seasonality and how far ahead you book

Flights from Friedman Memorial Airport (SUN) to Denver International Airport (DEN)

Recent traveler bookings reveal the top airlines flying from Sun Valley to Denver, often favored for their non-stop and one-stop options. Common layover spots include Seattle-Tacoma International Airport (SEA) with a 2-hour and 30-minute layover, and Salt Lake City International Airport (SLC) with a 1-hour and 30-minute layover. This variety allows you to tailor your itinerary by balancing price, total travel time, and cabin class for the best possible travel experience.

  • United: As a comprehensive carrier providing non-stop flights, United dominates this route with around 87% of departures. One-way fares generally fall between $115 and $545, and the total travel time is approximately 2 hours.
  • Alaska Airlines: This full-service airline offers one-stop flights, representing about 7% of departures on this route. One-way ticket prices typically range from $160 to $280, with an in-flight duration of 4 hours and 30 minutes, and an overall journey time of about 5 hours and 30 minutes, including the layover.
  • Delta: Also a full-service airline providing one-stop options, Delta accounts for around 7% of departures on this route. One-way fares usually range from $170 to $505, with a flight time of 4 hours and 30 minutes and a total travel duration of approximately 5 hours and 30 minutes, factoring in the layover.

Travelers flying from Sun Valley to Denver can upgrade their flights, with United providing first-class service on this route for a more luxurious experience.

Best time to fly from Sun Valley (SUN) to Denver (DEN)

The most popular months for travelers flying from Sun Valley to Denver are February, April, and June, when peak temperatures in Denver reach up to 66.9°F in June. If you prefer quieter travel, consider August, the least busy and relatively cheaper time to visit with fewer crowds and temperatures around 71.2°F. For better deals, October usually offers the lowest average one-way fare around $179. Flight availability peaks in February and August, with approximately 9 flights per week, making it easier to find convenient departure times. January, March, April, May, July, October, and December have the fewest flights, with approximately 7 flights per week.

  • Cheapest time to fly: October usually offers good deals with average one-way fare around $179, roughly 25% cheaper than the yearly average.
  • More budget-friendly months to fly: August, May, and September typically offer average one-way fares of around $187.
  • Most flight options: February and August have the highest number of flights from Sun Valley to Denver, with approximately 9 flights per week, giving you more flexibility in scheduling your trip.
calendar iconMonthtemperature iconTemperaturecrowd level iconDemandflights iconWeekly Flightsprice iconAverage one-way Fare
January28.4°F (-2.0°C)Average7$304
February28.6°F (-1.9°C)High9$343
March38.5°F (3.6°C)Average7$227
April45.3°F (7.4°C)High7$239
May54.0°F (12.2°C)Average7$188
June66.9°F (19.4°C)High8$209
July72.1°F (22.3°C)Low7$326
August71.2°F (21.8°C)Low9$184
September65.1°F (18.4°C)Average8$190
October50.2°F (10.1°C)Average7$179
November38.5°F (3.6°C)Average8$198
December28.9°F (-1.7°C)Low7$288

*Average one-way fare is based on Expedia flight booking data from January 2025 to April 2026 for the specified route and travel class and may change depending on availability, dates, and demand.

Alternative route from Sun Valley (SUN) to Denver (DEN)

  • Sun Valley to Denver (SUN-APA): Centennial Airport (APA) is approximately 21 miles from Denver International Airport (DEN), offering convenient access to the city.

How to find the best prices for flights from Sun Valley (SUN) to Denver (DEN)

Getting some of the best deals on flights from Sun Valley to Denver is all about timing and flexibility. Here are some key tips to help you save:

  1. Best times to book and fly: cheaper fares are generally available when booking 2 to 8 weeks in advance, which coincides with when most travelers plan their trips. Additionally, afternoon departures between 12 PM and 6 PM tend to be less expensive and are popular flight times. Moreover, flying on Thursday offers both lower prices and is the most favored travel day.
  2. Set up price alerts: stay updated on price changes by using Expedia's Price Tracker. Receive alerts when fares drop for your selected route.
  3. Bundle and save: bundle your flight and hotel to save on Expedia, or unlock a hotel deal after booking your flight.*
  4. 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.
  5. Stay flexible with dates: being open to different travel days can sometimes help you find better prices on flights and hotels.
  6. 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 Denver International Airport from Friedman Memorial Airport

Denver welcomes travelers from Sun Valley with a range of transport options based on price, convenience, and proximity. For departures, Friedman Memorial Airport is roughly a 30-minute drive (covering about 18 miles) from central Sun Valley. Here's how to reach Denver efficiently:

  • Hotel transfer: Transfers offer a convenient way to reach your hotel in Denver, with private rides that can be arranged in advance.
  • Car rental: Renting a car from Denver International Airport is a great option if you plan to explore and sightsee beyond the city. Browse cheap car rentals at Denver International 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.
  • Public transportation: From Denver International Airport, Jeppesen Terminal Station, a metro station, is located about 0.1 miles away on foot, providing easy access to public transport for travelers.

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 $200 and cheap return flights from $401 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.

Travel information

Origin airport
Friedman Memorial
Destination airport
Denver Intl.
Airlines serving
Alaska Airlines, Delta, United
Roundtrip price
$400
Distance
556 mi
Average flight time
2 hours 2 mins

Book with confidence

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 August. 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 $200 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.

 

Sun Valley to Denver Flights

*Flight schedules are subject to change.

*Available to One Key members.

 

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