$224 Cheap Flights from Boston (BOS) to Sun Valley (SUN)
Popular airlines from Logan International Airport (BOS) to Sun Valley, ID (SUN-Friedman Memorial)
Alaska AirlinesAlaska Airlines
DeltaDelta
UnitedUnited
American AirlinesAmerican Airlines
Cheap Flights from Boston to Sun Valley (BOS-SUN)
Alternative airports near Sun Valley
Prices were available within the past 7 days. Prices and availability are subject to change.
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Boston (BOS) to Sun Valley (SUN) at a glance
Embark on your journey from Boston (BOS) to Sun Valley (SUN) with a range of airlines offering this domestic long-haul route. Explore various options from full-service carriers to find the perfect itinerary that aligns with your budget and schedule while discovering the iconic sights and neighborhoods of Sun Valley. Check out the essential details for flights departing from Logan International Airport (BOS) to Friedman Memorial Airport (SUN).
- Fastest flight duration: around 7 hours in-flight, plus roughly 1 hour layover with one stop
- Route distance: roughly 2,200 miles (3,540 km)
- Flights per week: around 9 departures on average
- Typical fares (one-way): economy tickets often range from $170–$665, depending on seasonality and how far ahead you book
Flights from Logan International Airport (BOS) to Friedman Memorial Airport (SUN)
Based on recent traveler bookings, here are the top airlines favored for journeys from Boston to Sun Valley, primarily offering one-stop services. The popular layover options include O'Hare International Airport (ORD) with approximately a 50-minute layover, Denver International Airport (DEN) at about 1 hour and 15 minutes, and Salt Lake City International Airport (SLC), also around 1 hour and 15 minutes. These choices allow you to balance price, total travel time, and cabin class to secure the best itinerary.
- United: As a comprehensive service airline, United provides one-stop travel options, with one-way ticket prices generally falling between $175 and $675. This carrier represents about 54% of departures on this route, featuring a flight time of 7 hours and a total travel duration of approximately 8 hours, including layover.
- Delta: Another full-service airline, Delta also offers one-stop flights, with one-way fares typically ranging from $170 to $965. It accounts for around 25% of departures on this route, with an in-air time of 7 hours and a total journey time of about 8 hours, factoring in layover.
- American Airlines: This full-service carrier provides one-stop services, with one-way fares usually between $170 and $900. American Airlines constitutes roughly 20% of departures for this route, featuring a flight duration of 7 hours and a total travel time estimated at 8 hours, including the layover.
Alternative routes from Boston (BOS) to Sun Valley (SUN)
- Boston to Challis (BOS-CHL): Located approximately 70 miles from Friedman Memorial Airport (SUN), Challis Airport (CHL) serves as a convenient option for travelers.
- Boston to Twin Falls (BOS-TWF): Twin Falls Airport (TWF) is roughly 71 miles distant from Friedman Memorial Airport (SUN), providing an accessible route for visitors.
How to find the best prices for flights from Boston (BOS) to Sun Valley (SUN)
Getting some of the best deals on flights from Boston to Sun Valley is all about timing and flexibility. Here are some key tips to help you save:
- Best times to book and fly: cheaper fares are usually found when booking 2-8 weeks in advance, which aligns with when most travelers make their reservations. Morning departures (5 AM-12 PM) not only tend to be cheaper but are also the most popular flight times. Additionally, flying on Monday generally offers lower prices, while Saturday remains the most popular travel day.
- Set up price alerts: stay updated on price changes by using Expedia's Price Tracker. Receive alerts when fares drop for your selected route.
- Bundle and save: bundle your flight and hotel to save on Expedia, or unlock a hotel deal after booking your flight.* Find Sun Valley hotel and flight deals.
- Compare flight options: use Expedia's search tool to compare airlines, routes, direct vs. non-direct flights, and flight times. You can also sort by price to find the most affordable options.
- Stay flexible with dates: being open to different travel days can sometimes help you find better prices on flights and hotels.
- Think about luggage: nowadays, it's important to check the airline's baggage policies to find the best value. That may be paying for an additional carry-on bag or booking a ticket with checked luggage included. Either way, double-check your allowance before confirming your booking to avoid excess baggage fees at the airport.
*Members only. Savings vary and are not available on all bundles. Select hotels.
Arriving at Friedman Memorial Airport from Logan International Airport
Sun Valley welcomes travelers from Boston with a range of transport options based on price, convenience, and proximity. Sun Valley city center is approximately a 30-minute drive (covering about 18 miles) from Friedman Memorial Airport, depending on traffic. Here's how to reach Sun Valley efficiently:
- Hotel transfer: Transfers offer a convenient way to reach your hotel in Sun Valley, with options including free hotel shuttles and private rides, which can be arranged in advance with your hotel.
- Car rental: Renting a car from Friedman Memorial Airport is a great option if you plan to explore and sightsee beyond the city. Browse cheap car rentals at Friedman Memorial Airport on Expedia.
- Taxi/ride-hailing: Taxis and ride-hailing services may be available from designated pickup areas outside the terminal, check locally on arrival.
Boston to Sun Valley Flights
The cheapest times to fly from Boston to Sun Valley
On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Boston to Sun Valley are during the month of February. You can find some of the cheapest flights from Boston to Sun Valley with Expedia's search tool and vast selection of airlines.
The best time to book a flight from Boston to Sun Valley
Sunday is one of the best days to book for cheap flights from Boston to Sun Valley: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.
How to find cheap round-trip tickets from Boston to Sun Valley
Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Boston to Sun Valley in 2026. You can also book with separate airlines for your outbound and return journeys, from $224 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.
Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Boston to Sun Valley flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.
You could also save big by booking one of Expedia's vacation packages. Bundling together your Boston to Sun Valley airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.
*Terms apply.
Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.
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 cheap one-way flights from $224 and cheap return flights $427 Boston, MA (BOS-Logan Intl.) to Sun Valley, ID (SUN-Friedman Memorial) with Expedia. One-way flights generally range between $239 and $1765, and roundtrip flights usually range from $434 to $1915. 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 the cheapest fares first, and use the Price Tracking tool to receive alerts when Boston, MA (BOS-Logan Intl.) to Sun Valley, ID (SUN-Friedman Memorial) ticket fares go up or down.
*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Boston, MA (BOS-Logan Intl.) to Sun Valley, ID (SUN-Friedman Memorial)?
The cheapest month to fly from BOS to SUN is February 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're 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 flights from Boston (BOS) to Sun Valley (SUN) with a layover in Philadelphia Intl. (PHL), starting from around $236 for a round-trip ticket. 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.
*Prices based on flights available on Expedia in the last year.
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.
What is the earliest flight from Boston, MA (BOS-Logan Intl.) to Sun Valley, ID (SUN-Friedman Memorial)?
The earliest flight from Logan International Airport (BOS) to Friedman Memorial Airport (SUN) typically departs at around 5:00 AM, operated by Alaska Airlines. This is a seasonal service active in October, allowing you to maximize your time in Sun Valley. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
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 Logan International Airport (BOS) to Friedman Memorial (SUN) are in the early morning, from 6am to 9am. About 56% of passengers prefer this time window. Many major carriers, including United Airlines, American Airlines, and Delta Air Lines, offer flights during this window. This timing works well because it allows you to arrive in Sun Valley early enough to enjoy a full day of activities.
How long does it take to fly from Boston, MA (BOS-Logan Intl.) to Sun Valley, ID (SUN-Friedman Memorial)?
A flight from BOS to SUN with a layover takes around 8 hours, with the route covering approximately 2,166 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Boston, MA (BOS-Logan Intl.) to Sun Valley, ID (SUN-Friedman Memorial)?
First class seats are offered on the BOS to SUN route. First class cabins are available on:
- Delta Air Lines
- United Airlines
- 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 from Logan Intl. (BOS)?
From Logan Intl. (BOS), you can fly into Friedman Memorial (SUN) to reach Sun Valley. Some flights may connect through major hubs like O'Hare Intl. (ORD), Liberty Intl. (EWR), Washington Dulles Intl. (IAD) 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 International Airport |
|---|---|
Destination airport | Sun Valley, ID |
Distance | 2,165 miles away |
Airlines serving | Alaska Airlines, Delta, United, American Airlines |
Popular airline | Alaska Airlines |
Roundtrip price | $427 |