$89 Cheap Flights from Boise (BOI) to Sun Valley (SUN)

View $89 flight on Fri, Feb 20, 2026Opens in a new window

Popular airlines from Boise Airport (BOI) to Sun Valley, ID (SUN-Friedman Memorial)

Cheap Flights from Boise to Sun Valley (BOI-SUN)

Prices were available within the past 7 days and start at $89 for one-way flights and $207 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Fri, Feb 20 - Fri, Mar 6
BOI
Boise
SUN
Sun Valley
$207 Roundtrip, found 2 days ago
$207
Roundtrip
found 2 days ago
Select Delta flight, departing Fri, Feb 20 from Boise to Sun Valley, returning Fri, Mar 6, priced at $207 found 2 days ago
Delta
Fri, Feb 20 - Tue, Mar 10
BOI
Boise
SUN
Sun Valley
$212 Roundtrip, found 2 days ago
$212
Roundtrip
found 2 days ago
Select Delta flight, departing Fri, Feb 20 from Boise to Sun Valley, returning Tue, Mar 10, priced at $212 found 2 days ago
Delta
Fri, Jan 9 - Sat, Jan 24
BOI
Boise
SUN
Sun Valley
$218 Roundtrip, found 2 days ago
$218
Roundtrip
found 2 days ago
Select Delta flight, departing Fri, Jan 9 from Boise to Sun Valley, returning Sat, Jan 24, priced at $218 found 2 days ago
Delta
Mon, Mar 9 - Sat, Mar 14
BOI
Boise
SUN
Sun Valley
$221 Roundtrip, found 4 days ago
$221
Roundtrip
found 4 days ago
Select Delta flight, departing Mon, Mar 9 from Boise to Sun Valley, returning Sat, Mar 14, priced at $221 found 4 days ago
Delta
Sun, Feb 22 - Sun, Mar 15
BOI
Boise
SUN
Sun Valley
$246 Roundtrip, found 2 days ago
$246
Roundtrip
found 2 days ago
Select Delta flight, departing Sun, Feb 22 from Boise to Sun Valley, returning Sun, Mar 15, priced at $246 found 2 days ago
Delta
Mon, Feb 23 - Sun, Mar 15
BOI
Boise
SUN
Sun Valley
$251 Roundtrip, found 2 days ago
$251
Roundtrip
found 2 days ago
Select Delta flight, departing Mon, Feb 23 from Boise to Sun Valley, returning Sun, Mar 15, priced at $251 found 2 days ago
Alaska Airlines
Thu, Jan 8 - Wed, Jan 14
BOI
Boise
SUN
Sun Valley
$275 Roundtrip, found 5 days ago
$275
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Thu, Jan 8 from Boise to Sun Valley, returning Wed, Jan 14, priced at $275 found 5 days ago
Hawaiian Airlines
Thu, Jan 1 - Sat, Jan 17
BOI
Boise
SUN
Sun Valley
$294 Roundtrip, found 2 days ago
$294
Roundtrip
found 2 days ago
Select Hawaiian Airlines flight, departing Thu, Jan 1 from Boise to Sun Valley, returning Sat, Jan 17, priced at $294 found 2 days ago
American Airlines
Mon, Mar 9 - Sat, Mar 14
BOI
Boise
SUN
Sun Valley
$682 Roundtrip, found 4 days ago
$682
Roundtrip
found 4 days ago
Select American Airlines flight, departing Mon, Mar 9 from Boise to Sun Valley, returning Sat, Mar 14, priced at $682 found 4 days ago
United
Mon, Mar 9 - Sat, Mar 14
BOI
Boise
SUN
Sun Valley
$760 Roundtrip, found 4 days ago
$760
Roundtrip
found 4 days ago
Select United flight, departing Mon, Mar 9 from Boise to Sun Valley, returning Sat, Mar 14, priced at $760 found 4 days ago

Alternative airports near Sun Valley

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Friedman Memorial SUN. Cheapest and Closest option available. Average driving time to city center is 23 minutes. Flights from $500
SUN
Friedman Memorial
CheapestClosest
Average driving time to city center23 min
Flights from $500
Flights from Boise (BOI) to Sun Valley (SUN)
Origin airport
Boise
Destination airport
Friedman Memorial
Roundtrip price
$207
Distance
96 mi

Boise to Sun Valley Flights

The cheapest times to fly from Boise 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 Boise to Sun Valley are during the month of February. You can find some of the cheapest flights from Boise to Sun Valley with Expedia's search tool and vast selection of airlines.

 

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

Sunday is one of the best days to book for cheap flights from Boise 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 Boise 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 Boise to Sun Valley in 2026. You can also book with separate airlines for your outbound and return journeys, from $89 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 Boise 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 Boise 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 Boise Airport (BOI) to Friedman Memorial Airport (SUN) cost?
Secure a cheap one-way flight from $89 or cheap return flight from $207 from Boise Airport (BOI) to Friedman Memorial Airport (SUN) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Boise Airport (BOI) to Friedman Memorial Airport (SUN)?
February is the least expensive month to fly from BOI to SUN. Planning your trip for the off-season is often the key to scoring lower fares.
What is the cheapest airline that flies from Boise Airport (BOI) to Friedman Memorial Airport (SUN)?
Use the filters on Expedia to compare airlines and find the most affordable carrier that'll fly you from BOI to SUN. Then, sort your results by "Price (lowest to highest)" to pick up a good deal.
How many flights per day from Boise Airport (BOI) to Friedman Memorial Airport (SUN)?
Nonstop flights from Boise Airport (BOI) to Friedman Memorial Airport (SUN) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filters. Enter your dates and click on either "1 Stop" or "2+ Stops."
What day of the week has the most flights from BOI to SUN?
You'll usually find Tuesday the quietest day for flights, while Fridays tend to be 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 Boise Airport (BOI) to Friedman Memorial Airport (SUN)?
Select a flight from Boise Airport (BOI) to Friedman Memorial Airport (SUN) that takes off before 3 PM to reduce the likelihood of delays and cancellations. Departures later than this have a 22% higher chance of being canceled, on average.**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 Boise Airport (BOI) to Friedman Memorial Airport (SUN) last-minute?
Last-minute fares from BOI to SUN are usually more expensive. To secure the lowest rates, start searching for flights as early as possible. That said, if you're flexible with your travel dates, you may score a cheap ticket right before your trip.
Is it cheaper to book a BOI to SUN flight and hotel package?
You can save money by securing a BOI to SUN flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's easy to manage it all in one convenient place. After choosing your ideal flights and accommodations, you can add extras like activities, tours and car rentals.
Can I cancel or change the date of my flight from Boise Airport (BOI) to Friedman Memorial Airport (SUN)?
You can usually cancel or reschedule your BOI to SUN flight. However, if the booking was made more than 24 hours ago, additional fees may apply. Check your airline's policies in your itinerary to see what changes are possible and whether any costs are involved. You'll also find further details on our Customer Service portal.

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*Available to One Key members.