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Sun Valley

$159+ 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 3/3. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — BOI
Mar 10 — Mar 171
Tue 3/10
Tue 3/17
1 adult, Economy
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Cheap 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 February 8, 2026.

This Alaska Airlines deal was found by Cheapflights users on 2/8. 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.
Wed 4/17:00 am
DEN
-
SUN
1 stop28h 18m
Alaska Airlines
Sat 4/412:00 pm
SUN
-
DEN
1 stop11h 56m
Alaska Airlines
Deal found 2/8$288
This Expedia deal was found by Cheapflights users on 2/5. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/277:00 am
DEN
-
SUN
1 stop12h 12m
Alaska Airlines
Tue 3/3112:00 pm
SUN
-
DEN
1 stop11h 56m
Alaska Airlines
Deal found 2/5$317
This Alaska Airlines deal was found by Cheapflights users on 2/5. 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.
Fri 2/276:16 pm
DEN
-
SUN
1 stop24h 06m
Alaska Airlines
Tue 3/311:52 am
SUN
-
DEN
1 stop5h 28m
Alaska Airlines
Deal found 2/5$340
This Alaska Airlines deal was found by Cheapflights users on 2/7. 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.
Wed 2/257:00 am
DEN
-
SUN
1 stop11h 22m
Alaska Airlines
Wed 3/411:52 am
SUN
-
DEN
1 stop5h 28m
Alaska Airlines
Deal found 2/7$348
This Expedia deal was found by Cheapflights users on 2/4. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/1811:47 am
DEN
-
SUN
1 stop7h 25m
Alaska Airlines
Mon 3/237:54 pm
SUN
-
DEN
1 stop14h 57m
Alaska Airlines
Deal found 2/4$353
This United Airlines deal was found by Cheapflights users on 2/7. 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.
Fri 3/207:05 pm
DEN
-
SUN
Nonstop2h 09m
United Airlines
Tue 3/247:00 am
SUN
-
DEN
Nonstop2h 12m
United Airlines
Deal found 2/7$369
This Alaska Airlines deal was found by Cheapflights users on 2/8. 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.
Wed 3/117:00 am
DEN
-
SUN
1 stop11h 22m
Alaska Airlines
Sun 3/152:45 pm
SUN
-
DEN
1 stop9h 14m
Alaska Airlines
Deal found 2/8$370
This Alaska Airlines deal was found by Cheapflights users on 2/5. 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.
Sun 3/17:00 am
DEN
-
SUN
1 stop11h 22m
Alaska Airlines
Sat 3/77:04 pm
SUN
-
DEN
1 stop16h 10m
Alaska Airlines
Deal found 2/5$373
This Alaska Airlines deal was found by Cheapflights users on 2/7. 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.
Thu 3/197:00 am
DEN
-
SUN
1 stop12h 12m
Alaska Airlines
Mon 3/2312:00 pm
SUN
-
DEN
1 stop11h 56m
Alaska Airlines
Deal found 2/7$379
This United Airlines deal was found by Cheapflights users on 2/7. 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.
Thu 3/197:15 pm
DEN
-
SUN
Nonstop2h 09m
United Airlines
Sun 3/227:00 am
SUN
-
DEN
Nonstop2h 12m
United Airlines
Deal found 2/7$381

Find 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 February 8, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$288
(Alaska Airlines)

One-way from

$134
(Expedia)

Popular in

August

Cheapest in

November

Average price

$491
Provider with most accurate pricing for Denver Intl-Hailey Sun Valley-Friedman flight deals.
Search Deals
Provider most trusted by Cheapflights users for Denver Intl-Hailey Sun Valley-Friedman flights.
Search Deals
From Denver Intl to Sun Valley
Search Deals
One-way flight from Denver Intl to Sun Valley
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($79 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($20 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

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 February 8, 2026.
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

Wed 4/1

7:00 am-11:18 am

1 stop28h 18m

Hailey Sun Valley-Friedman

Sat 4/4

12:00 pm-11:56 pm

1 stop11h 56m

$288

DenverHailey

DEN - SUN

DENSUN

Denver Intl

Fri 3/27

7:00 am-7:12 pm

1 stop12h 12m

Hailey Sun Valley-Friedman

Tue 3/31

12:00 pm-11:56 pm

1 stop11h 56m

$317

DenverHailey

DEN - SUN

DENSUN

Denver Intl

Fri 2/27

6:16 pm-6:22 pm

1 stop24h 06m

Hailey Sun Valley-Friedman

Tue 3/3

11:52 am-5:20 pm

1 stop5h 28m

$340

DenverHailey

DEN - SUN

DENSUN

Denver Intl

Wed 3/18

11:47 am-7:12 pm

1 stop7h 25m

Hailey Sun Valley-Friedman

Mon 3/23

7:54 pm-10:51 am

1 stop14h 57m

$353

DenverHailey

DEN - SUN

DENSUN

Denver Intl

Wed 3/11

7:00 am-6:22 pm

1 stop11h 22m

Hailey Sun Valley-Friedman

Sun 3/15

2:45 pm-11:59 pm

1 stop9h 14m

$370

DenverHailey

DEN - SUN

DENSUN

Denver Intl

Thu 3/19

7:00 am-7:12 pm

1 stop12h 12m

Hailey Sun Valley-Friedman

Mon 3/23

12:00 pm-11:56 pm

1 stop11h 56m

$379

DenverHailey

DEN - SUN

DENSUN

Denver Intl

Thu 3/19

7:15 pm-9:24 pm

Nonstop2h 09m

Hailey Sun Valley-Friedman

Sun 3/22

7:00 am-9:12 am

Nonstop2h 12m

$381

DenverHailey

DEN - SUN

DENSUN

Denver Intl

Sun 3/1

7:40 am-2:03 pm

1 stop6h 23m

Hailey Sun Valley-Friedman

Sat 3/7

7:04 pm-11:14 am

1 stop16h 10m

$385

DenverHailey

DEN - SUN

DENSUN

Denver Intl

Sun 3/1

6:40 am-1:01 pm

1 stop6h 21m

Hailey Sun Valley-Friedman

Sat 3/7

7:25 am-12:00 pm

1 stop4h 35m

$389

DenverHailey

DEN - SUN

DENSUN

Denver Intl

Sat 3/21

4:00 pm-9:50 pm

1 stop5h 50m

Hailey Sun Valley-Friedman

Wed 3/25

7:15 am-11:33 am

1 stop4h 18m

$389

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/8

Showing 1-10 of 19 results
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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 $54). Flying from Denver to Sun Valley in April is currently the most expensive (average of $197). 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 February 8, 2026.

It’s optimal to fly from Denver to Sun Valley at noon. By choosing this option you can save up to 15% on the cost of your flight, compared to a flight in the morning.

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 February 7, 2026.

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

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 February 8, 2026.
Read reviews from past customers who have flown 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.
United Airlines
7.4
Good
9,257 reviews

Overall

7.4

Comfort

7.3

Entertainment

7.1

Crew

8.1

Boarding

7.7

Food

6.6

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
United Airlines
7.4
Good
9,257 reviews
United Airlines
7.4
Good
9,257 reviews

Overall

7.4

Comfort

7.3

Entertainment

7.1

Crew

8.1

Boarding

7.7

Food

6.6

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

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 is 1 flight from Denver Intl to Sun Valley per day from 4 different airlines.

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

    The Denver Intl to Sun Valley flight path was viewed by 9 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from Denver to Sun Valley?

    For as low as $288, Alaska Airlines can have you in Sun Valley from Denver in 28h 18m. The distance from Denver to Sun Valley is about 556 mi.

  • 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: Frontier (88%), Southwest (81%), Lufthansa (78%).

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

    Looking at all options, your cheapest flight can be booked for $29. While the most popular route (Denver Intl - Hailey Sun Valley-Friedman) can be booked for $389 on average, our data indicates $216 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 $54). Flying from Denver to Sun Valley in April is currently the most expensive (average of $197). 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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Top 4 airlines flying from Denver to Sun Valley

Discover the top 4 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 February 8, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$54Average$127FlexibilityNo cancel feeOn-time62%
DeltaCheapest$68Average$202FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$156Average$398FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$197Average$284FlexibilityNo cancel feeOn-time63%

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