£580 Cheap Flights from London (LHR) to Sun Valley (SUN)

You can find one-way and return flights from LHR to SUN with Expedia. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see our cheapest fares first, and use the Price Tracking tool to receive alerts when LHR to SUN ticket fares go up or down.

The cheapest months to fly from LHR to SUN are typically during off-peak season when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you are able to. Use the calendar view in your search to see which months have low fares on this route.

Enter LHR to SUN and your travel dates, then apply the 'Nonstop' filter to see only direct flights.

To find a cheap flight from London (LHR-Heathrow) to Sun Valley, ID (SUN-Friedman Memorial), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.

The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.

There are approximately 26 connecting flights per day from London (LHR-Heathrow) to Sun Valley, ID (SUN-Friedman Memorial). Some common connection points include Dublin (DUB), John F. Kennedy Intl. (JFK), and Los Angeles Intl. (LAX).

The earliest flight from London Heathrow (LHR) to Sun Valley, ID (SUN-Friedman Memorial) typically departs around 6:30 AM. This service is offered by KLM and Delta. This is a seasonal service, active only in June. An early departure like this can help you make the most of your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.

You'll typically find the most flights from London Heathrow (LHR) to Sun Valley, ID (SUN) on a Monday, with around 75 flights available. This gives you a good selection of options for your travel plans. Major airlines on this route include United, Virgin Atlantic, and Delta.

The most popular departure times for flights from London Heathrow (LHR) to Sun Valley, ID (SUN-Friedman Memorial) are in the morning, from 9am to 12pm. Many major carriers, including United, Delta and Virgin Atlantic, offer flights during this window. Many travellers prefer this time as it allows for an early start to your journey, getting you to your destination with plenty of time left in the day.

There are no nonstop flights from London Heathrow (LHR) to Sun Valley, ID (SUN-Friedman Memorial). The journey covers a distance of approximately 7,689 kilometres (4,778 miles). Flights with one stop typically take around 24 hours 18 minutes. If you opt for flights with two or more stops, your travel time will be around 17 hours 30 minutes. Keep in mind that these are average travel times and can vary based on your specific routing and layover durations.

You can fly business class between LHR and SUN. You can fly business class with KLM.

It's easy to earn miles on a London (LHR-Heathrow) to Sun Valley, ID (SUN-Friedman Memorial) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.

*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.

If you're planning to travel to Sun Valley from Heathrow (LHR), you can fly directly into Friedman Memorial (SUN) which offers international flights and connections. Some flights may connect through major hubs like John F. Kennedy Intl. (JFK), Los Angeles Intl. (LAX), or Logan Intl. (BOS) before reaching Sun Valley. Compare routes and airports on Expedia to find the best flight options for your travel plans.

Typically, booking a last minute flight from London (LHR-Heathrow) to Sun Valley, ID (SUN-Friedman Memorial) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.

Securing a London (LHR-Heathrow) to Sun Valley, ID (SUN-Friedman Memorial) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.

If you booked your London (LHR-Heathrow) to Sun Valley, ID (SUN-Friedman Memorial) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.