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Sun Valley

$141+ Cheap flights from Denver (DEN) to Sun Valley, ID

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/29. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — BOI
Aug 7 — Aug 141
Thu 8/7
Thu 8/14
1 adult, Economy
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Cheap flight deals from Denver to Sun Valley

Keep the following information in mind while searching for Denver to Sun Valley flight deals. Data was last updated August 2, 2025.

Round-trip from

$229
(Delta)

One-way from

$141
(Delta)

Popular in

November

Cheapest in

June

Average price

$419
From Denver Intl to Sun Valley
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One-way flight from Denver Intl to Sun Valley
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Highest demand for flights based on searches. 8% potential increase in price ($40 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($12 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find flight deals from Denver to Sun Valley

Cheapest flights from Denver to Sun Valley
Explore the most affordable flight options available from Denver to Sun Valley. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 2, 2025.

This Delta deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/303:45 pmDEN - SUN
1 stop6h 11mDelta
Sat 9/67:30 amSUN - DEN
1 stop4h 21mDelta
Deal found 7/31$229
This United Airlines deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/3011:31 amDEN - SUN
Nonstop2h 01mUnited Airlines
Sat 9/67:00 amSUN - DEN
Nonstop2h 00mUnited Airlines
Deal found 7/31$279
This United deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/227:04 pmDEN - SUN
Nonstop2h 01mMultiple Airlines
Wed 9/2410:16 amSUN - DEN
1 stop7h 05mMultiple Airlines
Deal found 7/31$423
This Alaska Airlines deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/306:17 pmDEN - SUN
1 stop15h 17mAlaska Airlines
Sat 9/610:16 amSUN - DEN
2 stops24h 28mAlaska Airlines
Deal found 7/31$584

Cheapflights Fare Finder

 
Customize your flight search to find flights from Denver to Sun Valley that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 2, 2025.
Use the filters below to find and compare flights from Denver to Sun Valley that are best for you.

Fly from

Denver

Fly to

Sun Valley

Route

Depart

Return

Price

DenverHailey

DEN - SUN

DENSUN

Denver Intl

Sat 8/30

3:45 pm-9:56 pm

1 stop6h 11m

Hailey Sun Valley-Friedman

Sat 9/6

7:30 am-11:51 am

1 stop4h 21m

$229

DenverHailey

DEN - SUN

DENSUN

Denver Intl

Sat 8/30

11:31 am-1:32 pm

Nonstop2h 01m

Hailey Sun Valley-Friedman

Sat 9/6

7:00 am-9:00 am

Nonstop2h 00m

$279

DenverHailey

DEN - SUN

DENSUN

Denver Intl

Mon 9/22

7:04 pm-9:05 pm

Nonstop2h 01m

Hailey Sun Valley-Friedman

Wed 9/24

10:16 am-5:21 pm

1 stop7h 05m

$423

DenverHailey

DEN - SUN

DENSUN

Denver Intl

Sat 8/30

6:17 pm-9:34 am

1 stop15h 17m

Hailey Sun Valley-Friedman

Sat 9/6

10:16 am-10:44 am

2 stops24h 28m

$584

DenverHailey

DEN - SUN

DENSUN

Denver Intl

Tue 12/30

7:21 pm-8:10 pm

2 stops24h 49m

Hailey Sun Valley-Friedman

Sat 1/3

8:00 am-6:51 pm

2 stops10h 51m

$1,330

DenverHailey

DEN - SUN

DENSUN

Denver Intl

Fri 8/29

6:25 pm-9:56 pm

1 stop3h 31m

$141

DenverHailey

DEN - SUN

DENSUN

Denver Intl

Fri 8/29

7:04 pm-9:05 pm

Nonstop2h 01m

$224

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/31

Best time to book a flight from Denver to Sun Valley

Have a flexible travel schedule? Discover the best time to fly to Sun Valley from Denver with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Denver to Sun Valley

What is the cheapest month to book a flight from Denver to Sun Valley?

Currently, October is the cheapest month in which you can book a flight from Denver to Sun Valley (average of $314). Flying from Denver to Sun Valley in June is currently the most expensive (average of $398). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from DEN to SV9?

Find hourly flight availability from Denver to Sun Valley. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 2, 2025.

When flying from Denver to Sun Valley, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

What is the cheapest day to fly from Denver to Sun Valley?

Use this chart to determine the cheapest time to fly round-trip from Denver to Sun Valley. Price data was last updated on July 27, 2025.

Travelers seeking maximum savings on their Denver to Sun Valley flight should consider departing on Saturday mornings when fares are most often at their lowest. Wednesday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Denver to Sun Valley

Explore weekly flight availability from Denver to Sun Valley. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated August 2, 2025.

The most flights from DEN to SV9 are scheduled on a Monday (18 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (9 on average).

Reviews of airlines servicing Sun Valley

Get insights into the airlines that provide service to Sun Valley. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Sun Valley. Reviews last updated August 2, 2025.
Read reviews from past customers who have flown Alaska Airlines, Delta, and United Airlines from Denver to Sun Valley. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Overall

8.0

Boarding

8.1

Food

7.1

Comfort

7.8

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Overall

8.0

Boarding

8.1

Food

7.1

Comfort

7.8

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Delta
8.0
Very good
7,983 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Overall

8.0

Boarding

8.1

Food

7.1

Comfort

7.8

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
United Airlines
7.4
Good
8,904 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Overall

8.0

Boarding

8.1

Food

7.1

Comfort

7.8

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Overall

8.0

Boarding

8.1

Food

7.1

Comfort

7.8

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

Related info for your journey

Find useful and relevant information for your journey from Denver to Sun Valley. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Denver to Sun Valley?

    If you book a flight to Sun Valley from Denver, you will be flying from Denver Intl, which is the city’s only airport. Denver Intl (DEN) is located 18.5 mi from the center of Denver. There are 2 flights from Denver Intl to Sun Valley per day from 5 different airlines.

  • How popular is this Denver to Sun Valley flight route?

    The Denver Intl to Sun Valley flight path was viewed by 7 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • What are the most reliable airlines from Denver to Sun Valley?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Denver to Sun Valley on time: United Airlines (74%), Air Canada (70%), SkyWest Airlines (67%).

  • What are the cheapest flights from Denver to Sun Valley?

    Looking at all options, your cheapest flight can be booked for $69. While the most popular route (Denver Intl - Hailey Sun Valley-Friedman) can be booked for $281 on average our data indicates $236 when flying from Denver to Sun Valley.

  • Can I find deals for flights from Denver to Sun Valley that include hotel bookings?

    Yes. In addition to deals on Denver to Sun Valley flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Denver to Sun Valley?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Denver to Sun Valley.

  • Can I find deals for business class flights from Denver to Sun Valley?

    Yes. Cheapflights offers flight deals from Denver to Sun Valley by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Denver to Sun Valley?

    Currently, October is the cheapest month in which you can book a flight from Denver to Sun Valley (average of $314). Flying from Denver to Sun Valley in June is currently the most expensive (average of $398). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Denver to Sun Valley

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from Denver to Sun Valley

Discover the top 5 airlines that operate flights from Denver to Sun Valley. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 2, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$73Average$150FlexibilityNo cancel feeOn-time62%
DeltaCheapest$98Average$417FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$168Average$235FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$197Average$289FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$219Average$401FlexibilityNo cancel feeOn-time69%

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