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CA $688 Cheap Flights from Boston (BOS) to Sun Valley (SUN)

View CA $688 flight on Thu, Jul 23, 2026Opens in a new window

Popular airlines from Logan International Airport (BOS) to Sun Valley, ID (SUN-Friedman Memorial)

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Cheap flights from Boston (BOS) to Sun Valley (SUN)

Prices were available within the past 7 days and start at CA $688 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Find the cheapest month to fly from Boston (BOS) to Sun Valley (SUN)

January is typically the cheapest month to fly

From CA $358 - CA $983 per traveller.

Frequently asked questions

How much does a flight from Boston, MA (BOS-Logan Intl.) to Sun Valley, ID (SUN-Friedman Memorial) cost?
You can find one-way and return flights from BOS 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 BOS to SUN ticket fares go up or down.
What is the cheapest month to fly from Boston, MA (BOS-Logan Intl.) to Sun Valley, ID (SUN-Friedman Memorial)?
The cheapest months to fly from BOS 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.
Which airlines fly direct from Boston, MA (BOS-Logan Intl.) to Sun Valley, ID (SUN-Friedman Memorial)?
Enter BOS to SUN and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Boston, MA (BOS-Logan Intl.) to Sun Valley, ID (SUN-Friedman Memorial)?
American Airlines is one of the cheapest airlines offering connecting return flights from Boston, MA (BOS-Logan Intl.) to Sun Valley, ID (SUN-Friedman Memorial), with prices starting from around CA$326 for flights that can be booked for departure within the next year. These flights typically include a layover in Charlotte-Douglas Intl. (CLT). Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.
How do I find cheap flights from Boston, MA (BOS-Logan Intl.) to Sun Valley, ID (SUN-Friedman Memorial)?
To find a cheap flight from Boston, MA (BOS-Logan Intl.) 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.
What is the best time to fly from Boston, MA (BOS-Logan Intl.) to Sun Valley, ID (SUN-Friedman Memorial)?
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.
How many flights per day from Boston, MA (BOS-Logan Intl.) to Sun Valley, ID (SUN-Friedman Memorial)?
There are approximately 34 connecting flights per day from Boston Logan International (BOS) to Sun Valley Friedman Memorial (SUN). Some common connection points include O'Hare International (ORD), Portland International (PDX), and Liberty International (EWR).
What is the earliest flight from Boston, MA (BOS-Logan Intl.) to Sun Valley, ID (SUN-Friedman Memorial)?
The earliest flight from Boston, MA (BOS-Logan Intl.) to Sun Valley, ID (SUN-Friedman Memorial) typically departs around 5:00 AM local time. This flight is operated by Alaska Airlines. This is a seasonal service, active only in October. 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.
What day of the week has the most flights from Boston, MA (BOS-Logan Intl.) to Sun Valley, ID (SUN-Friedman Memorial)?
You'll typically find the most flights from Boston, MA (BOS-Logan Intl.) to Sun Valley, ID (SUN-Friedman Memorial) on a Thursday, with around 29 flights available. This gives you a good selection of options for your travel plans. Major airlines on this route include United, Alaska Airlines, and Delta. Thursdays have notably more flight options compared to other days of the week, offering you greater flexibility.
What are the most popular departure times for flights from Boston, MA (BOS-Logan Intl.) to Sun Valley, ID (SUN-Friedman Memorial)?
The most popular departure times for flights from Boston, MA (BOS-Logan Intl.) to Sun Valley, ID (SUN-Friedman Memorial) are in the early morning, from 6am to 9am. Many major carriers, including Delta, United and American Airlines, offer flights during this window. Many travellers prefer these times because it allows for an early start to their journey, getting you to your destination sooner.
How long does it take to fly from Boston, MA (BOS-Logan Intl.) to Sun Valley, ID (SUN-Friedman Memorial)?
There are no nonstop flights from Boston, MA (BOS-Logan Intl.) to Sun Valley, ID (SUN-Friedman Memorial). The shortest flights typically involve one stop and take around 8 hours. Flights with two or more stops usually take longer, averaging about 13 hours. This route covers a distance of approximately 3486 kilometres. Keep in mind that actual flight times can vary due to factors like layover duration, routing, and weather conditions.
Can you fly business or first class from Boston, MA (BOS-Logan Intl.) to Sun Valley, ID (SUN-Friedman Memorial)?
You can fly business or first class between BOS and SUN. First class cabins are available on:

  • Alaska Airlines
  • Delta
  • United
  • American Airlines

How do I earn miles on a Boston, MA (BOS-Logan Intl.) to Sun Valley, ID (SUN-Friedman Memorial) flight with Expedia?
It's easy to earn miles on a Boston, MA (BOS-Logan Intl.) 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.
What airports do you fly into for Sun Valley, ID (SUN) from Boston, MA (BOS)?
If you're planning to travel to Sun Valley from Logan Intl. (BOS), you can fly directly into Friedman Memorial (SUN). Some flights may connect through major hubs like O'Hare Intl. (ORD), Portland Intl. (PDX), or Liberty Intl. (EWR) before reaching Sun Valley. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Boston, MA (BOS-Logan Intl.) to Sun Valley, ID (SUN-Friedman Memorial) at the last minute?
Typically, booking a last minute flight from Boston, MA (BOS-Logan Intl.) 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.
Is it cheaper to book a Boston, MA (BOS-Logan Intl.) to Sun Valley, ID (SUN-Friedman Memorial) flight and hotel package?
Securing a Boston, MA (BOS-Logan Intl.) 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.
Can I cancel or change the date of my flight from Boston, MA (BOS-Logan Intl.) to Sun Valley, ID (SUN-Friedman Memorial)?
If you booked your Boston, MA (BOS-Logan Intl.) 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.

Travel information

Origin airport
Logan Intl.
Destination airport
Friedman Memorial
Distance
3465 km

Book with confidence

Boston to Hailey Flights

The easy way to book your flights from Boston to Sun Valley 

With Expedia, it’s simple to find and book flights to Sun Valley from Boston whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from 6 airlines that cover this route. There are nonstop flights to Friedman Memorial, too.  

Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from Boston to Sun Valley today, tomorrow, or this week.  

 

Save dollars with cheap flights from Logan Intl., BOS to Friedman Memorial, SUN 

Sort your search results by price to find great deals on your flight from Boston to Sun Valley—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to Sun Valley from Boston currently is just rising to .  

Here are more money-saving tips: 

  • Fly in when flight prices are normally at their lowest 
  • Book about a month to 6 weeks before you travel for the best prices to Sun Valley  
  • Avoid peak season and weekends when flights can cost more
  • Early morning and late-night flights are sometimes cheaper, so try varying your travel times 
  • One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free! 

 

Reasons to choose Expedia for your flight to Sun Valley from Boston 

Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. So book your flight to Sun Valley with Expedia today.

Boston to Hailey Flights

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*Available to Expedia members.