What is the cheapest month to fly to Sun Valley?

October is currently the cheapest month to fly to Sun Valley . At this moment in time August is the most expensive month. These prices are determined by multiple factors and booking in advance can help keep costs down if your schedule is not as flexible.

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 Boise Airport is the closest property to Boise Air Term. Gowen Fld (0.0 mi away from Boise Air Term. Gowen Fld).

£690+ Cheap Flights to Sun Valley

Find flight deals to Sun Valley

Enter your travel dates to find the best prices.

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 29 October 2025.

Sat 20/1210:05LHR - SUN

1 stop18h 14mUnited Airlines

Sun 8/208:05SUN - LHR

1 stop16h 20mUnited Airlines

Deal found 27/10£1,853

Best flights to Sun Valley
Discover carefully curated flight deals to Sun Valley that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 29 October 2025.

Sat 7/212:20LHR - SUN

1 stop14h 18mMultiple Airlines

Sun 15/211:25SUN - LHR

1 stop16h 05mMultiple Airlines

Deal found 27/10£690

Sat 7/211:00LHR - SUN

1 stop32h 46mFinnair

Sun 15/213:23SUN - LHR

2 stops33h 52mFinnair

Deal found 27/10£705

Sun 8/217:05LHR - SUN

2 stops26h 41mAmerican Airlines

Sun 15/213:23SUN - LHR

2 stops22h 37mAmerican Airlines

Deal found 27/10£720

Sun 8/217:05LHR - SUN

2 stops26h 41mAmerican Airlines

Wed 18/207:45SUN - LHR

2 stops17h 50mAmerican Airlines

Deal found 27/10£720

Sun 8/217:05LHR - SUN

2 stops26h 41mAmerican Airlines

Tue 17/207:45SUN - LHR

2 stops20h 50mAmerican Airlines

Deal found 27/10£720

Sun 8/217:05LHR - SUN

2 stops26h 41mAmerican Airlines

Mon 16/213:23SUN - LHR

1 stop15h 12mAmerican Airlines

Deal found 27/10£720

Sat 7/216:30LHR - SUN

2 stops27h 16mAmerican Airlines

Mon 16/213:23SUN - LHR

1 stop15h 12mAmerican Airlines

Deal found 27/10£751

Sat 7/215:25LHR - SUN

2 stops28h 21mAmerican Airlines

Wed 18/207:45SUN - LHR

2 stops19h 40mAmerican Airlines

Deal found 27/10£751

Sat 7/214:10LHR - SUN

1 stop29h 36mAmerican Airlines

Sun 15/213:23SUN - LHR

1 stop34h 32mAmerican Airlines

Deal found 27/10£751

One-way flights to Sun Valley
Search for one-way flight options to Sun Valley. Find affordable one-way fares based on user searches. Data last updated 29 October 2025.

Sun 21/1210:05LHR - SUN

1 stop17h 57mUnited Airlines

Deal found 27/10£1,030

Sat 20/1216:20LHR - SUN

2 stops36h 10mUnited Airlines

Deal found 28/10£1,183

Sat 20/1209:25LHR - SUN

1 stop31h 27mMultiple Airlines

Deal found 26/10£1,203

Flights to Sun Valley in 2025

Return from	£690
One-way from	£1,030

7/2-15/2
2 total stops
30h 23m total
London to Hailey

Search Deals

United Airlines
21/12
1 total stop
17h 57m total
London to Sun Valley

Search Deals

Fly from

Route

Depart

Return

Price

LondonHailey

LHR - SUN

LHRSUN

London Heathrow

Sat 7/2

12:20-19:38

1 stop14h 18m

Hailey Sun Valley-Friedman

Sun 15/2

11:25-10:30

1 stop16h 05m

£690

LondonHailey

LHR - SUN

LHRSUN

London Heathrow

Sat 7/2

11:00-12:46

1 stop32h 46m

Hailey Sun Valley-Friedman

Sun 15/2

13:23-06:15

2 stops33h 52m

£705

LondonHailey

LHR - SUN

LHRSUN

London Heathrow

Sun 8/2

17:05-12:46

2 stops26h 41m

Hailey Sun Valley-Friedman

Sun 15/2

13:23-19:00

2 stops22h 37m

£720

LondonHailey

LHR - SUN

LHRSUN

London Heathrow

Sun 8/2

17:05-12:46

2 stops26h 41m

Hailey Sun Valley-Friedman

Wed 18/2

07:45-08:35

2 stops17h 50m

£720

LondonHailey

LHR - SUN

LHRSUN

London Heathrow

Sun 8/2

17:05-12:46

2 stops26h 41m

Hailey Sun Valley-Friedman

Tue 17/2

07:45-11:35

2 stops20h 50m

£720

LondonHailey

LHR - SUN

LHRSUN

London Heathrow

Sun 8/2

17:05-12:46

2 stops26h 41m

Hailey Sun Valley-Friedman

Mon 16/2

13:23-11:35

1 stop15h 12m

£720

LondonHailey

LHR - SUN

LHRSUN

London Heathrow

Sat 7/2

16:30-12:46

2 stops27h 16m

Hailey Sun Valley-Friedman

Mon 16/2

13:23-11:35

1 stop15h 12m

£751

LondonHailey

LHR - SUN

LHRSUN

London Heathrow

Sat 7/2

15:25-12:46

2 stops28h 21m

Hailey Sun Valley-Friedman

Wed 18/2

07:45-10:25

2 stops19h 40m

£751

LondonHailey

LHR - SUN

LHRSUN

London Heathrow

Sat 7/2

14:10-12:46

1 stop29h 36m

Hailey Sun Valley-Friedman

Sun 15/2

13:23-06:55

1 stop34h 32m

£751

LondonHailey

LHR - SUN

LHRSUN

London Heathrow

Sun 21/12

10:05-21:02

1 stop17h 57m

£1,030

Flights are sorted by cheapest return flights first.

Deals found on 27/10

Showing 1-10 of 12 results

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 14 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

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

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).

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 Boise 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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Why should you use Cheapflights to find cheap flight tickets to Sun Valley?

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Can Cheapflights find flights to Sun Valley with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights to Sun Valley flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights to Sun Valley become cheaper?

Of course! You can track prices for flights to Sun Valley and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals to set up your price alerts.

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£690+ 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 7/2. Fares are subject to change and may not be available on all flights or dates of travel.

Find flight deals to Sun Valley

Cheapest flights to Sun ValleyExplore the most affordable flight options available to Sun Valley. Find the lowest fares based on data from user searches, with prices last updated on 29 October 2025.

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 29 October 2025.

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 29 October 2025.

Return from

One-way from

Cheapflights Fare Finder

Use the filters below to find and compare flights to Sun Valley that are best for you.

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.

Cheapflights Insights

Everything you need to know about your flight to Sun Valley

How long is the flight to Sun Valley?

Rainfall in Sun Valley by month

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

Temperature in Sun Valley by month

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

FAQs about flying to Sun Valley

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

What is the best airline to fly to Sun Valley?

Does Boise Air Term. Gowen Fld have car hire?

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Search flights to Sun Valley by cabin class

Find flights to Sun Valley, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights to Sun Valley?

Why should you use Cheapflights to find cheap flight tickets to Sun Valley?

Can Cheapflights find flights to Sun Valley with no change fees?

Can Cheapflights notify me if prices for flights to Sun Valley become cheaper?

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Travel Smart

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 29 October 2025.