$129 Cheap Flights from Sun Valley (SUN) to Seattle (SEA)

View $129 flight on Tue, Jan 13, 2026Opens in a new window

Popular airlines from Sun Valley, ID (SUN-Friedman Memorial) to Seattle-Tacoma International Airport (SEA)

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Cheap Flights from Sun Valley to Seattle (SUN-SEA)

Prices were available within the past 7 days and start at $129 for one-way flights and $217 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Thu, Dec 4 - Sun, Dec 7
SUN
Sun Valley
SEA
Seattle
$217 Roundtrip, found 20 hours ago
$217
Roundtrip
found 20 hours ago
Select Alaska Airlines flight, departing Thu, Dec 4 from Sun Valley to Seattle, returning Sun, Dec 7, priced at $217 found 20 hours ago
Hawaiian Airlines
Thu, Jan 29 - Sun, Feb 1
SUN
Sun Valley
SEA
Seattle
$217 Roundtrip, found 1 day ago
$217
Roundtrip
found 1 day ago
Select Hawaiian Airlines flight, departing Thu, Jan 29 from Sun Valley to Seattle, returning Sun, Feb 1, priced at $217 found 1 day ago
Delta
Fri, Feb 13 - Fri, Feb 27
SUN
Sun Valley
SEA
Seattle
$217 Roundtrip, found 1 day ago
$217
Roundtrip
found 1 day ago
Select Delta flight, departing Fri, Feb 13 from Sun Valley to Seattle, returning Fri, Feb 27, priced at $217 found 1 day ago
Delta
Thu, Jan 29 - Fri, Feb 20
SUN
Sun Valley
SEA
Seattle
$227 Roundtrip, found 1 day ago
$227
Roundtrip
found 1 day ago
Select Delta flight, departing Thu, Jan 29 from Sun Valley to Seattle, returning Fri, Feb 20, priced at $227 found 1 day ago
Delta
Thu, Jan 29 - Thu, Feb 19
SUN
Sun Valley
SEA
Seattle
$237 Roundtrip, found 1 day ago
$237
Roundtrip
found 1 day ago
Select Delta flight, departing Thu, Jan 29 from Sun Valley to Seattle, returning Thu, Feb 19, priced at $237 found 1 day ago
Delta
Mon, Feb 2 - Fri, Feb 20
SUN
Sun Valley
SEA
Seattle
$247 Roundtrip, found 1 day ago
$247
Roundtrip
found 1 day ago
Select Delta flight, departing Mon, Feb 2 from Sun Valley to Seattle, returning Fri, Feb 20, priced at $247 found 1 day ago
Delta
Mon, Feb 2 - Thu, Feb 19
SUN
Sun Valley
SEA
Seattle
$257 Roundtrip, found 1 day ago
$257
Roundtrip
found 1 day ago
Select Delta flight, departing Mon, Feb 2 from Sun Valley to Seattle, returning Thu, Feb 19, priced at $257 found 1 day ago
Hawaiian Airlines
Sat, Nov 22 - Tue, Nov 25
SUN
Sun Valley
SEA
Seattle
$257 Roundtrip, found 19 hours ago
$257
Roundtrip
found 19 hours ago
Select Hawaiian Airlines flight, departing Sat, Nov 22 from Sun Valley to Seattle, returning Tue, Nov 25, priced at $257 found 19 hours ago
American Airlines
Tue, Dec 23 - Tue, Dec 30
SUN
Sun Valley
SEA
Seattle
$473 Roundtrip, found 3 days ago
$473
Roundtrip
found 3 days ago
Select American Airlines flight, departing Tue, Dec 23 from Sun Valley to Seattle, returning Tue, Dec 30, priced at $473 found 3 days ago
United
Thu, Feb 5 - Sat, Feb 7
SUN
Sun Valley
SEA
Seattle
$575 Roundtrip, found 4 days ago
$575
Roundtrip
found 4 days ago
Select United flight, departing Thu, Feb 5 from Sun Valley to Seattle, returning Sat, Feb 7, priced at $575 found 4 days ago

Find the cheapest month to fly from Sun Valley (SUN) to Seattle (SEA)

January is typically the cheapest month to fly

From $167 - $937 per traveler.

Alternative airports near Seattle

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

Select flight to Seattle - Tacoma Intl. SEA. Cheapest option available. Average driving time to city center is 20 minutes. Flights from $387
SEA
Seattle - Tacoma Intl.
Cheapest
Average driving time to city center20 min
Flights from $387
Flights from Sun Valley (SUN) to Seattle (SEA)
Origin airport
Friedman Memorial
Destination airport
Seattle - Tacoma Intl.
Airlines serving
Alaska Airlines, Delta, Hawaiian Airlines, United
Roundtrip price
$217
Distance
473 mi
Average flight time
1 hour 54 mins

Sun Valley to Seattle Flights

The cheapest times to fly from Sun Valley to Seattle

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

 

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

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

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 Seattle in 2025. You can also book with separate airlines for your outbound and return journeys, from $129 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 Seattle 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 Seattle 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 Seattle - Tacoma Intl. Airport (SEA) cost?
Secure a cheap one-way flight from $129 or cheap return flight from $217 from Friedman Memorial Airport (SUN) to Seattle - Tacoma Intl. Airport (SEA) 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 Friedman Memorial Airport (SUN) to Seattle - Tacoma Intl. Airport (SEA)?
December is the most affordable month to fly from SUN to SEA. Planning your trip for the off-season is often the key to finding better fares.
Which airlines fly direct from Friedman Memorial Airport (SUN) to Seattle - Tacoma Intl. Airport (SEA)?
Take a nonstop flight with Alaska Airlines and fly straight from Friedman Memorial Airport (SUN) to Seattle - Tacoma Intl. Airport (SEA).
What is the cheapest airline that flies from Friedman Memorial Airport (SUN) to Seattle - Tacoma Intl. Airport (SEA)?
To find the cheapest airline flying from SUN to SEA, use Expedia's filter tool. Tailor your search based on what matters most to you, such as preferred carriers and cabin class. You can then sort your results by "Price (lowest to highest)" to see the most affordable options first.
How many flights per day from Friedman Memorial Airport (SUN) to Seattle - Tacoma Intl. Airport (SEA)?
On average, Friedman Memorial Airport (SUN) only has 1 direct flight to Seattle - Tacoma Intl. Airport (SEA) per day. For more choices, try our easy-to-use filters. Enter your travel details, then select "1 Stop" or "2+ Stops" to find flights offering layovers.
What are the most popular departure times for flights from Friedman Memorial Airport (SUN) to Seattle - Tacoma Intl. Airport (SEA)?
More people fly between SUN and SEA at 10 AM than at any other time. Looking for a quieter experience? Consider flying outside peak hours and you could save on your ticket as well.
What day of the week has the most flights from SUN to SEA?
If you depart on a Friday, you'll get the greatest range of choices for flights from Friedman Memorial Airport (SUN) to Seattle - Tacoma Intl. Airport (SEA).
What is the earliest flight from Friedman Memorial Airport (SUN) to Seattle - Tacoma Intl. Airport (SEA)?
The first flight of the day out of Friedman Memorial Airport (SUN) is at around 10:25AM UTC-7. Board this plane and you'll arrive at Seattle - Tacoma Intl. Airport (SEA) at approximately 11:14AM UTC-8. The overall travel time is 1h 49m.
How long does it take to fly from Friedman Memorial Airport (SUN) to Seattle - Tacoma Intl. Airport (SEA)?
The average flight time from SUN to SEA is 1 hour and 48 minutes, covering a distance of 470 mi.
What is the best time to fly from Friedman Memorial Airport (SUN) to Seattle - Tacoma Intl. Airport (SEA)?
Choose a flight from Friedman Memorial Airport (SUN) to Seattle - Tacoma Intl. Airport (SEA) 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.
What airports do you fly into for Seattle from Friedman Memorial Airport (SUN)?
If you're boarding a direct flight from Friedman Memorial Airport (SUN) to Seattle, Seattle - Tacoma Intl. Airport (SEA) is the only airport you can touch down at.
Is it cheaper to buy a plane ticket from Friedman Memorial Airport (SUN) to Seattle - Tacoma Intl. Airport (SEA) last-minute?
Booking your flight from SUN to SEA shortly before your getaway is usually more expensive. However, if there's some wiggle room with your departure times and dates, you could grab a cheap last-minute fare.
Is it cheaper to book a SUN to SEA flight and hotel package?
You can save money by booking a SUN to SEA flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's simple to manage everything in one place. After choosing your ideal accommodations and flights, consider other add-ons like activities, tours and car rentals.
Can I cancel or change the date of my flight from Friedman Memorial Airport (SUN) to Seattle - Tacoma Intl. Airport (SEA)?
Typically, you can cancel or modify your SUN to SEA flight. However, there may be additional charges, especially if you made your booking 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, head to our Customer Service portal.

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*Available to One Key members.