$201 Cheap Flights from Bellingham (BLI) to Sun Valley (SUN)

View $201 flight on Tue, Dec 30, 2025Opens in a new window

Popular airlines from Bellingham, WA (BLI-Bellingham Intl.) to Sun Valley, ID (SUN-Friedman Memorial)

Cheap Flights from Bellingham to Sun Valley (BLI-SUN)

Prices were available within the past 7 days and start at $201 for one-way flights and $1,186 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Wed, Oct 8 - Sun, Oct 12
BLI
Bellingham
SUN
Sun Valley
$1,186 Roundtrip, found 6 days ago
$1,186
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Wed, Oct 8 from Bellingham to Sun Valley, returning Sun, Oct 12, priced at $1,186 found 6 days ago
Alaska Airlines
Wed, Oct 8 - Sun, Oct 12
BLI
Bellingham
SUN
Sun Valley
$1,206 Roundtrip, found 6 days ago
$1,206
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Wed, Oct 8 from Bellingham to Sun Valley, returning Sun, Oct 12, priced at $1,206 found 6 days ago
Alaska Airlines
Wed, Oct 8 - Sun, Oct 12
BLI
Bellingham
SUN
Sun Valley
$1,214 Roundtrip, found 6 days ago
$1,214
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Wed, Oct 8 from Bellingham to Sun Valley, returning Sun, Oct 12, priced at $1,214 found 6 days ago
Alaska Airlines
Wed, Oct 8 - Sun, Oct 12
BLI
Bellingham
SUN
Sun Valley
$1,234 Roundtrip, found 6 days ago
$1,234
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Wed, Oct 8 from Bellingham to Sun Valley, returning Sun, Oct 12, priced at $1,234 found 6 days ago
Flights from Bellingham (BLI) to Sun Valley (SUN)
Origin airport
Bellingham Intl.
Destination airport
Friedman Memorial
Roundtrip price
$1,186
Distance
536 mi

Bellingham to Sun Valley Flights

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

 

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

Sunday is one of the best days to book for cheap flights from Bellingham 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 Bellingham 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 Bellingham to Sun Valley in 2025. You can also book with separate airlines for your outbound and return journeys, from $201 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 Bellingham 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 Bellingham 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 Bellingham Intl. Airport (BLI) to Friedman Memorial Airport (SUN) cost?
Grab a cheap one-way flight from $201 or cheap return flight from $1,186 from Bellingham Intl. Airport (BLI) 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 Bellingham Intl. Airport (BLI) to Friedman Memorial Airport (SUN)?
October is the least expensive month to fly from BLI to SUN. Timing your trip outside of the busy season is often the key to scoring lower fares.
What is the cheapest airline that flies from Bellingham Intl. Airport (BLI) to Friedman Memorial Airport (SUN)?
Use the filter tool on Expedia to compare airlines and find the most affordable carrier that'll fly you from BLI to SUN. Then, sort your results by "Price (lowest to highest)" to pick up a great deal.
How many flights per day from Bellingham Intl. Airport (BLI) to Friedman Memorial Airport (SUN)?
You'll need to book a flight with a layover if you're traveling from Bellingham Intl. Airport (BLI) to Friedman Memorial Airport (SUN). Direct flights don't operate daily on this route. However, just filter your search to include one or more stops to find the best option for your trip.
What day of the week has the most flights from BLI to SUN?
You'll usually find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can vary from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Bellingham Intl. Airport (BLI) to Friedman Memorial Airport (SUN)?
To arrive at Friedman Memorial Airport (SUN) on time, pick a flight that leaves Bellingham Intl. Airport (BLI) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this time.**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 Bellingham Intl. Airport (BLI) to Friedman Memorial Airport (SUN) last-minute?
Waiting until just before your trip to book a flight from BLI to SUN generally means paying more. While it's possible to find some last-minute discounts, they're not always guaranteed. Be flexible with your travel plans for the best chance of getting a bargain.
Is it cheaper to book a BLI to SUN flight and hotel package?
Compared with arranging hotels and flights separately, booking a BLI to SUN flight and hotel package with Expedia could result in significant savings. Better yet, having everything in one convenient place takes the hassle out of planning your trip. Just pick your flights and choose from our wide range of hotels, then personalize your trip with other add-ons like car rentals and activities.
Can I cancel or change the date of my flight from Bellingham Intl. Airport (BLI) to Friedman Memorial Airport (SUN)?
In most instances, you're able to cancel or reschedule your BLI to SUN flight. However, additional fees may apply, especially if you booked more than 24 hours ago. Double-check your itinerary for the airline's fees and guidelines on flight changes, or if you'd like further information, visit our Customer Service portal.

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*Available to One Key members.