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£708+ Cheap flights to Sun Valley

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/5. Fares are subject to change and may not be available on all flights or dates of travel.
— BOI
30 Mar — 6 Apr1
1 adult

Flights to Sun Valley in 2025

Find the latest flights to Sun Valley in 2025, with up-to-date prices and availability. In the last 7 days, Cheapflights users made a total of 858,174 searches and data was last updated on 25 March 2025.

Return from

£708
Delta
  • Delta
  • 8/5-15/5
  • 4 total stops
  • 43h 57m total
  • London to Hailey
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Find flight deals to Sun Valley

Cheapest flights to Sun Valley
Explore the most affordable flight options available to Sun Valley. Find the lowest fares based on data from user searches, with prices last updated on 25 March 2025.

Thu 8/506:30LHR - SUN
2 stops22h 18mDelta
Thu 15/515:21SUN - LHR
2 stops21h 39mDelta
Deal found 23/3£708
Thu 8/514:50LHR - SUN
1 stop29h 44mUnited Airlines
Thu 15/514:30SUN - LHR
1 stop12h 10mUnited Airlines
Deal found 23/3£825

Cheapflights Fare Finder

Locate flights to Sun Valley that fit your budget, with regularly updated fares and availability. In the last 7 days, Cheapflights users made a total of 858,174 searches and data was last updated on 25 March 2025.
Use the filters below to find and compare flights to Sun Valley that are best for you.

Fly from

London

Route

Depart

Return

Price

LondonHailey

LHR - SUN

LHRSUN

London Heathrow

Thu 8/5

06:30-21:48

2 stops22h 18m

Hailey Sun Valley-Friedman

Thu 15/5

15:21-20:00

2 stops21h 39m

£708

LondonHailey

LHR - SUN

LHRSUN

London Heathrow

Thu 8/5

14:50-13:34

1 stop29h 44m

Hailey Sun Valley-Friedman

Thu 15/5

14:30-09:40

1 stop12h 10m

£825

Flights are sorted by cheapest return flights first.

Deals found on 23/3

Best time to book a flight to Sun Valley

Have a flexible travel schedule? Discover the best time to fly to Sun Valley with our price prediction graph.
Estimated return 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 to Sun Valley

How long is the flight to Sun Valley?

On average, a flight from London to Sun Valley takes 22 hours 18 minutes. Flights to Sun Valley from other popular cities in United Kingdom will vary in length. Below are a few examples of popular routes and their flight times.

Rainfall in Sun Valley by month

Plan your trip to Sun Valley by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Sun Valley ranges from 10.0 - 60.0 inches per month. January is typically the wettest month, when rainfall can reach 60.0 mm. July is typically the driest time to visit Sun Valley when rainfall is around 10.0 mm.

Temperature in Sun Valley by month

Plan your trip to Sun Valley by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Sun Valley, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 18.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -7.0 C).

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 25 March 2025.
Delta
8.0
Very Good
7,890 reviews
Check prices

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Comfort

8.0

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very Good
7,890 reviews
Delta
8.0
Very Good
7,890 reviews
Check prices

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Comfort

8.0

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
United Airlines
7.4
Good
8,605 reviews
Delta
8.0
Very Good
7,890 reviews
Check prices

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Comfort

8.0

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

FAQs about flying to Sun Valley

  • Can I find cheaper flights to Sun Valley if I am willing to have stopovers?

    Yes, flights with stopovers are often cheaper than direct flights. Keep an eye out for flight deals to Sun Valley on Cheapflights that require 1 or 2 stops for potential cost savings.

  • What is the best airline to fly to Sun Valley?

    Based on reviews from Cheapflights users, Finnair is rated the highest out of the airlines that fly to Sun Valley.

  • Does Boise Air Term. Gowen Fld have car hire?

    Yes. Those touching down at Boise Air Term. Gowen Fld can take advantage of the car hire services offered upon their arrival.

  • Are there hotels close to Boise Air Term. Gowen Fld?

    Yes. Boise Air Term. Gowen Fld has hotels nearby for those requiring accommodations. Rodeway Inn Airport is the closest property to Boise Air Term. Gowen Fld (0.0 mi away from Boise Air Term. Gowen Fld).

See more FAQs

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