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Sun Valley

$160+ 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 4/23. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — BOI
Apr 23 — Apr 301
Thu 4/23
Thu 4/30
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 March 24, 2026.

This United Airlines deal was found by Cheapflights users on 3/23. 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 4/2311:30 am
DEN
-
SUN
Nonstop2h 05m
United Airlines
Thu 4/302:30 pm
SUN
-
DEN
Nonstop2h 06m
United Airlines
Deal found 3/23$329
This United Airlines deal was found by Cheapflights users on 3/24. 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 4/1111:30 am
DEN
-
SUN
Nonstop2h 05m
United Airlines
Sat 4/252:24 pm
SUN
-
DEN
Nonstop2h 06m
United Airlines
Deal found 3/24$339
This Delta deal was found by Cheapflights users on 3/23. 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.
Thu 4/238:10 am
DEN
-
SUN
1 stop6h 44m
Delta
Thu 4/303:34 pm
SUN
-
DEN
1 stop5h 12m
Delta
Deal found 3/23$349
This Delta deal was found by Cheapflights users on 3/24. 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 4/118:00 am
DEN
-
SUN
1 stop3h 54m
Delta
Sat 4/257:15 am
SUN
-
DEN
1 stop4h 17m
Delta
Deal found 3/24$359
This Alaska Airlines deal was found by Cheapflights users on 3/22. 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.
Mon 4/67:24 pm
DEN
-
SUN
1 stop15h 54m
Alaska Airlines
Fri 4/1012:00 pm
SUN
-
DEN
1 stop11h 56m
Alaska Airlines
Deal found 3/22$369
This Delta deal was found by Cheapflights users on 3/21. 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.
Wed 4/223:35 pm
DEN
-
SUN
1 stop6h 07m
Delta
Mon 5/1112:39 pm
SUN
-
DEN
1 stop6h 36m
Delta
Deal found 3/21$384
This Delta deal was found by Cheapflights users on 3/21. 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.
Wed 4/14:00 pm
DEN
-
SUN
1 stop5h 50m
Delta
Sat 4/43:30 pm
SUN
-
DEN
1 stop4h 27m
Delta
Deal found 3/21$394
This United Airlines deal was found by Cheapflights users on 3/21. 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.
Wed 4/2211:30 am
DEN
-
SUN
Nonstop2h 05m
United Airlines
Thu 5/72:30 pm
SUN
-
DEN
Nonstop2h 06m
United Airlines
Deal found 3/21$399
This United Airlines deal was found by Cheapflights users on 3/19. 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 5/217:25 pm
DEN
-
SUN
Nonstop2h 01m
United Airlines
Mon 5/257:00 am
SUN
-
DEN
Nonstop1h 58m
United Airlines
Deal found 3/19$409
This Delta deal was found by Cheapflights users on 3/21. 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 4/256:55 am
DEN
-
SUN
2 stops14h 47m
Delta
Thu 5/712:39 pm
SUN
-
DEN
1 stop6h 36m
Delta
Deal found 3/21$411
This Delta deal was found by Cheapflights users on 3/21. 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.
Wed 4/227:45 pm
DEN
-
SUN
2 stops16h 16m
Delta
Thu 5/712:39 pm
SUN
-
DEN
1 stop6h 36m
Delta
Deal found 3/21$421

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 March 24, 2026.

Round-trip from

$329
(United Airlines)

One-way from

$160
(Alaska Airlines)

Popular in

August

Cheapest in

November

Average price

$439
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. 18% potential increase in price ($99 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($19 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 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 March 24, 2026.
Use the filters below to find and compare flights from Denver to Sun Valley that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DenverHailey

DEN - SUN

DENSUN

Denver Intl

Sat 5/16

11:33 am-1:38 pm

Nonstop2h 05m

Hailey Sun Valley-Friedman

Wed 5/20

2:30 pm-4:36 pm

Nonstop2h 06m

$329

DenverHailey

DEN - SUN

DENSUN

Denver Intl

Sat 4/11

11:30 am-1:35 pm

Nonstop2h 05m

Hailey Sun Valley-Friedman

Sat 4/25

2:24 pm-4:30 pm

Nonstop2h 06m

$339

DenverHailey

DEN - SUN

DENSUN

Denver Intl

Sun 4/26

6:27 pm-9:42 pm

1 stop3h 15m

Hailey Sun Valley-Friedman

Sun 5/10

7:30 am-11:45 am

1 stop4h 15m

$349

DenverHailey

DEN - SUN

DENSUN

Denver Intl

Thu 5/7

3:49 pm-9:59 pm

1 stop6h 10m

Hailey Sun Valley-Friedman

Thu 5/14

12:39 pm-7:15 pm

1 stop6h 36m

$349

DenverHailey

DEN - SUN

DENSUN

Denver Intl

Thu 4/23

5:30 am-12:01 pm

1 stop6h 31m

Hailey Sun Valley-Friedman

Tue 5/12

7:30 am-11:45 am

1 stop4h 15m

$349

DenverHailey

DEN - SUN

DENSUN

Denver Intl

Wed 4/8

11:30 am-1:35 pm

Nonstop2h 05m

Hailey Sun Valley-Friedman

Sun 4/12

2:24 pm-4:30 pm

Nonstop2h 06m

$349

DenverHailey

DEN - SUN

DENSUN

Denver Intl

Tue 4/28

3:35 pm-9:42 pm

1 stop6h 07m

Hailey Sun Valley-Friedman

Mon 5/11

12:39 pm-7:15 pm

1 stop6h 36m

$384
Quickest round-trip

DenverHailey

DEN - SUN

DENSUN

Denver Intl

Thu 5/21

7:25 pm-9:26 pm

Nonstop2h 01m

Hailey Sun Valley-Friedman

Mon 5/25

2:38 pm-4:45 pm

Nonstop2h 07m

$399

DenverHailey

DEN - SUN

DENSUN

Denver Intl

Sun 4/26

6:55 am-9:42 pm

2 stops14h 47m

Hailey Sun Valley-Friedman

Tue 5/12

3:20 pm-7:15 pm

1 stop3h 55m

$431
Cheapest one-way

DenverHailey

DEN - SUN

DENSUN

Denver Intl

Sat 5/16

6:00 am-10:14 am

1 stop28h 14m

$180

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/22

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 $171). 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 March 24, 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 evening.

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 March 23, 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 March 24, 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
9,469 reviews

Food

6.6

Comfort

7.3

Boarding

7.7

Crew

8.1

Entertainment

7.1

Overall

7.4

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
9,469 reviews
United Airlines
7.4
Good
9,469 reviews

Food

6.6

Comfort

7.3

Boarding

7.7

Crew

8.1

Entertainment

7.1

Overall

7.4

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 8 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 $329, United Airlines can have you in Sun Valley from Denver in 2h 05m. The distance from Denver to Sun Valley is about 556 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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 (91%), Copa Airlines (87%), United Airlines (84%).

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

    Looking at all options, your cheapest flight can be booked for $79. While the most popular route (Denver Intl - Hailey Sun Valley-Friedman) can be booked for $329 on average, our data indicates $254 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 $171). 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

Browse thousands of different options on Cheapflights for your next trip

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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 March 24, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$54Average$125FlexibilityNo cancel feeOn-time62%
DeltaCheapest$68Average$202FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$159Average$380FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$197Average$292FlexibilityNo cancel feeOn-time63%

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