£629+ Cheap flights to Sun Valley

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 14/6. Fares are subject to change and may not be available on all flights or dates of travel.
— BOI
26 Feb — 5 Mar1
1 adult
1 adult, Economy, 0 bags

Flights to Sun Valley in 2026

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 27 January 2026.

Sat 7/212:40
LHR
-
SUN
2 stops40h 15m
Virgin Atlantic
Sat 14/212:41
SUN
-
LHR
2 stops48h 29m
Virgin Atlantic
Deal found 26/1£671
Fri 6/311:35
LHR
-
SUN
1 stop16h 49m
United Airlines
Tue 10/315:48
SUN
-
LHR
1 stop14h 12m
United Airlines
Deal found 25/1£748
Sat 7/210:25
LHR
-
SUN
2 stops18h 04m
United Airlines
Sat 14/212:34
SUN
-
LHR
1 stop12h 21m
United Airlines
Deal found 26/1£1,517
Sat 7/210:20
LHR
-
SUN
3 stops32h 53m
Multiple Airlines
Sat 14/212:41
SUN
-
LHR
3 stops21h 59m
Multiple Airlines
Deal found 26/1£2,692
Fri 6/216:10
LHR
-
SUN
2 stops27h 03m
Delta
Fri 13/213:41
SUN
-
LHR
1 stop13h 49m
Delta
Deal found 26/1£7,961
Fri 6/212:50
LHR
-
SUN
2 stops33h 11m
United Airlines
Fri 13/212:34
SUN
-
LHR
1 stop12h 21m
United Airlines
Deal found 25/1£8,438

Find flight deals to Sun Valley

Find the latest flights to Sun Valley in 2026, 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 27 January 2026.

Return from

£671

One-way from

£629
Virgin Atlantic
  • Virgin Atlantic
  • 7/2-14/2
  • 4 total stops
  • 88h 44m total
  • London to Hailey
Search Deals
14/6
  • 14/6
  • 3 total stops
  • 43h 17m total
  • London to Sun Valley
Search Deals

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 27 January 2026.
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

Sat 7/2

12:40-21:55

2 stops40h 15m

Hailey Sun Valley-Friedman

Sat 14/2

12:41-20:10

2 stops48h 29m

£671

LondonHailey

LHR - SUN

LHRSUN

London Heathrow

Fri 6/3

10:05-21:25

1 stop18h 20m

Hailey Sun Valley-Friedman

Tue 10/3

12:34-10:50

2 stops16h 16m

£748

LondonHailey

LHR - SUN

LHRSUN

London Heathrow

Sat 7/2

10:25-21:29

2 stops18h 04m

Hailey Sun Valley-Friedman

Sat 14/2

12:34-07:55

1 stop12h 21m

£1,517

LondonHailey

LHR - SUN

LHRSUN

London Heathrow

Sat 7/2

10:20-12:13

3 stops32h 53m

Hailey Sun Valley-Friedman

Sat 14/2

12:41-17:40

3 stops21h 59m

£2,692

LondonHailey

LHR - SUN

LHRSUN

London Heathrow

Fri 6/2

16:10-12:13

2 stops27h 03m

Hailey Sun Valley-Friedman

Fri 13/2

13:41-10:30

1 stop13h 49m

£7,961

LondonHailey

LHR - SUN

LHRSUN

London Heathrow

Sun 14/6

06:30-18:47

3 stops43h 17m

£629

LondonHailey

LHR - SUN

LHRSUN

London Heathrow

Sun 14/6

10:55-21:54

1 stop17h 59m

£696

Flights are sorted by cheapest return flights first.

Deals found on 24/1

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 16 hours 49 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).

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, Lufthansa 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

Browse thousands of different options on Cheapflights for your next trip

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

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