£231 Cheap Flights from Sun Valley (SUN) to Seattle (SEA)

View £231 flight on Tue, 26 Aug 2025Opens 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 (SUN) to Seattle (SEA)

Prices were available within the past 7 days and start at £231 for one-way flights and £219 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Thu, 12 Feb - Thu, 19 Feb
SUN
Sun Valley
SEA
Seattle
£219 Return, found 5 days ago
£219
Return
found 5 days ago
Select Alaska Airlines flight, departing Thu, 12 Feb from Sun Valley to Seattle, returning Thu, 19 Feb, priced at £219 found 5 days ago
Alaska Airlines
Wed, 18 Feb - Wed, 25 Feb
SUN
Sun Valley
SEA
Seattle
£300 Return, found 5 days ago
£300
Return
found 5 days ago
Select Alaska Airlines flight, departing Wed, 18 Feb from Sun Valley to Seattle, returning Wed, 25 Feb, priced at £300 found 5 days ago
Alaska Airlines
Thu, 12 Feb - Thu, 19 Feb
SUN
Sun Valley
SEA
Seattle
£315 Return, found 5 days ago
£315
Return
found 5 days ago
Select Alaska Airlines flight, departing Thu, 12 Feb from Sun Valley to Seattle, returning Thu, 19 Feb, priced at £315 found 5 days ago
Alaska Airlines
Wed, 18 Feb - Wed, 25 Feb
SUN
Sun Valley
SEA
Seattle
£397 Return, found 5 days ago
£397
Return
found 5 days ago
Select Alaska Airlines flight, departing Wed, 18 Feb from Sun Valley to Seattle, returning Wed, 25 Feb, priced at £397 found 5 days ago
Alaska Airlines
Wed, 18 Feb - Wed, 25 Feb
SUN
Sun Valley
SEA
Seattle
£493 Return, found 5 days ago
£493
Return
found 5 days ago
Select Alaska Airlines flight, departing Wed, 18 Feb from Sun Valley to Seattle, returning Wed, 25 Feb, priced at £493 found 5 days ago
Alaska Airlines
Mon, 16 Feb - Mon, 23 Feb
SUN
Sun Valley
SEA
Seattle
£588 Return, found 5 days ago
£588
Return
found 5 days ago
Select Alaska Airlines flight, departing Mon, 16 Feb from Sun Valley to Seattle, returning Mon, 23 Feb, priced at £588 found 5 days ago
Alaska Airlines
Mon, 16 Feb - Mon, 23 Feb
SUN
Sun Valley
SEA
Seattle
£721 Return, found 5 days ago
£721
Return
found 5 days ago
Select Alaska Airlines flight, departing Mon, 16 Feb from Sun Valley to Seattle, returning Mon, 23 Feb, priced at £721 found 5 days ago

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

January is typically the cheapest month to fly

From £123 - £694 per traveller.

Graph displaying average flight prices per month

Flight from Sun Valley to Seattle route information
Origin airport
Friedman Memorial
Destination airport
Seattle - Tacoma Intl.
Return price
£218
Distance
757 km
Average flight time
1 hour 49 mins

Compare flights from Sun Valley to Seattle easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from Sun Valley to Seattle. Operating between them flights per day, 10 airlines cover the route. And fly direct, getting you to Seattle - Tacoma Intl. in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Friedman Memorial to Seattle - Tacoma Intl..  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from Friedman Memorial (SUN) to Seattle - Tacoma Intl. (SEA)

The easiest way to view the best deals on flights from Sun Valley to Seattle today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Friedman Memorial to Seattle - Tacoma Intl. start at just £219 and range up to £721.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near Sun Valley and Seattle
  • booking your flight during February, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your Sun Valley to Seattle flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Friedman Memorial to Seattle - Tacoma Intl. for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Frequently asked questions

How much is a flight from SUN to SEA?
Based on fares offered within the last 7 days on Expedia for flights departing within the next year, round-trip flights between Friedman Memorial Airport (SUN) and SEA start from £219. Book ASAP to secure the best price for your next big adventure. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Friedman Memorial Airport (SUN) to Sea-Tac Airport?
Most flights can be cancelled online, but whether you incur a fee all comes down to your airline. If you do need to cancel your break, follow the instructions in the Customer Service Portal.
How do I find cheap flights from SUN to Sea-Tac Airport that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for Friedman Memorial Airport (SUN) to SEA flights, you'll see a "no change fees" filter for you to select.
How many hours is the flight from Friedman Memorial Airport to Seattle - Tacoma Intl. Airport (SEA)?
Lasting around 4 hours and 6 minutes, the flight between Friedman Memorial Airport (SUN) and SEA is a good opportunity to do some last-minute planning. Why not use this time to fine tune your itinerary for SeaTac?
How far is the flight from SUN to Sea-Tac Airport?
The distance from Friedman Memorial Airport (SUN) to Sea-Tac Airport (SEA) is only 760 kilometres. You'll be disembarking the plane and collecting your bags from the carousel in the blink of an eye.
Which airlines fly direct from Friedman Memorial Airport to SEA?
Operating 8 flights each month, Alaska Airlines (AS) is a great choice when flying straight from SUN to Sea-Tac Airport.
Are Friedman Memorial Airport to Seattle - Tacoma Intl. Airport (SEA) flight tickets cheaper when they're purchased at the last minute?
Flight prices are constantly going up and down, so it's no sure thing. While last-minute flight deals between SUN and Seattle - Tacoma Intl. Airport (SEA) are of course possible, it's also a good idea to keep a close eye on prices well before you fly. In fact, some airlines publish their prices up to a year prior to the departure date. Expedia is constantly updating the best airfare bargains around, so keep checking and be ready to lock in your seat when the price is low.

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