$181 Cheap Flights from Sun Valley (SUN) to Boston (BOS)

View $181 flight on Wed, May 14, 2025Opens in a new window

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

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Find available prices by choosing your travel dates.

Cheap Flights from Sun Valley to Boston (SUN-BOS)

Prices were available within the past 7 days and start at $181 for one-way flights and $361 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Tue, May 20 - Wed, May 28
SUN
Sun Valley
BOS
Boston
$361 Roundtrip, found 1 day ago
$361
Roundtrip
found 1 day ago
Select Delta flight, departing Tue, May 20 from Sun Valley to Boston, returning Wed, May 28, priced at $361 found 1 day ago
Delta
Tue, May 20 - Sun, May 25
SUN
Sun Valley
BOS
Boston
$396 Roundtrip, found 1 day ago
$396
Roundtrip
found 1 day ago
Select Delta flight, departing Tue, May 20 from Sun Valley to Boston, returning Sun, May 25, priced at $396 found 1 day ago
Delta
Wed, Jun 11 - Fri, Jun 13
SUN
Sun Valley
BOS
Boston
$401 Roundtrip, found 1 day ago
$401
Roundtrip
found 1 day ago
Select Delta flight, departing Wed, Jun 11 from Sun Valley to Boston, returning Fri, Jun 13, priced at $401 found 1 day ago
Delta
Tue, Jun 10 - Fri, Jun 13
SUN
Sun Valley
BOS
Boston
$406 Roundtrip, found 1 day ago
$406
Roundtrip
found 1 day ago
Select Delta flight, departing Tue, Jun 10 from Sun Valley to Boston, returning Fri, Jun 13, priced at $406 found 1 day ago
Delta
Tue, Jun 10 - Sun, Jun 15
SUN
Sun Valley
BOS
Boston
$422 Roundtrip, found 2 days ago
$422
Roundtrip
found 2 days ago
Select Delta flight, departing Tue, Jun 10 from Sun Valley to Boston, returning Sun, Jun 15, priced at $422 found 2 days ago
Delta
Sun, May 25 - Mon, May 26
SUN
Sun Valley
BOS
Boston
$431 Roundtrip, found 1 day ago
$431
Roundtrip
found 1 day ago
Select Delta flight, departing Sun, May 25 from Sun Valley to Boston, returning Mon, May 26, priced at $431 found 1 day ago
Delta
Tue, May 20 - Tue, May 27
SUN
Sun Valley
BOS
Boston
$434 Roundtrip, found 1 day ago
$434
Roundtrip
found 1 day ago
Select Delta flight, departing Tue, May 20 from Sun Valley to Boston, returning Tue, May 27, priced at $434 found 1 day ago
Hawaiian Airlines
Wed, Jun 11 - Thu, Jun 12
SUN
Sun Valley
BOS
Boston
$443 Roundtrip, found 1 day ago
$443
Roundtrip
found 1 day ago
Select Hawaiian Airlines flight, departing Wed, Jun 11 from Sun Valley to Boston, returning Thu, Jun 12, priced at $443 found 1 day ago
United
Sat, Jul 19 - Sat, Jul 26
SUN
Sun Valley
BOS
Boston
$459 Roundtrip, found 3 days ago
$459
Roundtrip
found 3 days ago
Select United flight, departing Sat, Jul 19 from Sun Valley to Boston, returning Sat, Jul 26, priced at $459 found 3 days ago
Alaska Airlines
Wed, Jun 11 - Mon, Jun 16
SUN
Sun Valley
BOS
Boston
$463 Roundtrip, found 6 days ago
$463
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Wed, Jun 11 from Sun Valley to Boston, returning Mon, Jun 16, priced at $463 found 6 days ago
Flights from Sun Valley (SUN) to Boston (BOS)
Origin airport
Friedman Memorial
Destination airport
Logan Intl.
Airlines serving
Delta, Hawaiian Airlines, United
Roundtrip price
$360
Distance
2165 mi

Sun Valley to Boston Flights

The cheapest times to fly from Sun Valley to Boston

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 Sun Valley to Boston are during the month of May. You can find some of the cheapest flights from Sun Valley to Boston with Expedia's search tool and vast selection of airlines.

The best time to book a flight from Sun Valley to Boston

Sunday is one of the best days to book for cheap flights from Sun Valley to Boston: 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 Sun Valley to Boston

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 Sun Valley to Boston in 2025. You can also book with separate airlines for your outbound and return journeys, from $181 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 Sun Valley to Boston 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 Sun Valley to Boston 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 Friedman Memorial Airport (SUN) to Logan Intl. Airport (BOS) cost?
Discover the latest flight deals from SUN to BOS by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from SUN to BOS?
The cheapest flights from SUN to BOS are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from SUN to BOS?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that’ll take you from SUN to BOS. Sort your results by “Price (lowest to highest)” to snap up a great deal.
How many flights per day from Friedman Memorial Airport (SUN) to Logan Intl. Airport (BOS)?
You’ll have to catch a flight with a layover if you’re traveling from Friedman Memorial Airport (SUN) to Logan Intl. Airport (BOS). Direct flights don’t operate daily on this route. However, simply filter your search to include one or more stops to discover an option that works for you.
What day of the week has the most flights from SUN to BOS?
You’ll typically find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can change from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Friedman Memorial Airport (SUN) to Logan Intl. Airport (BOS)?
Book a flight from Friedman Memorial Airport (SUN) to Logan Intl. Airport (BOS) that leaves before 3 PM to reduce the likelihood of delays and cancellations. Departures later than this are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.
Is it cheaper to buy a plane ticket from Friedman Memorial Airport (SUN) to Logan Intl. Airport (BOS) last-minute?
Last-minute fares from SUN to BOS are typically more expensive. To lock in the best prices, start looking for flights well ahead of time. That being said, if your travel plans are flexible, you may score a cheap fare just before your departure.
Is it cheaper to book a SUN to BOS flight and hotel package?
Opting for a SUN to BOS flight and hotel package tends to be cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your trip in one place. Select from our extensive range of accommodations and then add car rentals, activities and flights to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Friedman Memorial Airport (SUN) to Logan Intl. Airport (BOS)?
Typically, it’s possible to reschedule or cancel your SUN to BOS flight. However, for bookings made more than 24 hours ago, additional fees may apply. Refer to your airline’s policies in your itinerary to see what changes are allowed and if any costs are involved. You’ll also find further details on our Customer Service portal.

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*Available to One Key members.