£486 Cheap Flights from Perth (PER) to Seattle (SEA)

View £486 flight on Wed, 15 Oct 2025Opens in a new window

Popular airlines from Perth Airport (PER) to Seattle-Tacoma International Airport (SEA)

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Cheap Flights from Perth (PER) to Seattle (SEA)

Prices were available within the past 7 days and start at £486 for one-way flights and £846 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Sun, 10 Aug - Sun, 17 Aug
PER
Perth
SEA
Seattle
£846 Return, found 2 days ago
£846
Return
found 2 days ago
Select American Airlines flight, departing Sun, 10 Aug from Perth to Seattle, returning Sun, 17 Aug, priced at £846 found 2 days ago
Jetstar
Wed, 13 Aug - Wed, 20 Aug
PER
Perth
SEA
Seattle
£850 Return, found 2 days ago
£850
Return
found 2 days ago
Select Jetstar flight, departing Wed, 13 Aug from Perth to Seattle, returning Wed, 20 Aug, priced at £850 found 2 days ago
Air Canada
Mon, 11 Aug - Tue, 19 Aug
PER
Perth
SEA
Seattle
£852 Return, found 2 days ago
£852
Return
found 2 days ago
Select Air Canada flight, departing Mon, 11 Aug from Perth to Seattle, returning Tue, 19 Aug, priced at £852 found 2 days ago
Jetstar
Tue, 12 Aug - Tue, 19 Aug
PER
Perth
SEA
Seattle
£854 Return, found 2 days ago
£854
Return
found 2 days ago
Select Jetstar flight, departing Tue, 12 Aug from Perth to Seattle, returning Tue, 19 Aug, priced at £854 found 2 days ago
American Airlines
Mon, 11 Aug - Sun, 17 Aug
PER
Perth
SEA
Seattle
£855 Return, found 2 days ago
£855
Return
found 2 days ago
Select American Airlines flight, departing Mon, 11 Aug from Perth to Seattle, returning Sun, 17 Aug, priced at £855 found 2 days ago
Jetstar
Wed, 13 Aug - Wed, 20 Aug
PER
Perth
SEA
Seattle
£863 Return, found 2 days ago
£863
Return
found 2 days ago
Select Jetstar flight, departing Wed, 13 Aug from Perth to Seattle, returning Wed, 20 Aug, priced at £863 found 2 days ago
Air Canada
Sun, 10 Aug - Sat, 23 Aug
PER
Perth
SEA
Seattle
£868 Return, found 2 days ago
£868
Return
found 2 days ago
Select Air Canada flight, departing Sun, 10 Aug from Perth to Seattle, returning Sat, 23 Aug, priced at £868 found 2 days ago
Air Canada
Sun, 10 Aug - Thu, 21 Aug
PER
Perth
SEA
Seattle
£870 Return, found 2 days ago
£870
Return
found 2 days ago
Select Air Canada flight, departing Sun, 10 Aug from Perth to Seattle, returning Thu, 21 Aug, priced at £870 found 2 days ago
Qantas Airways
Wed, 8 Oct - Wed, 15 Oct
PER
Perth
SEA
Seattle
£879 Return, just found
£879
Return
just found
Select Qantas Airways flight, departing Wed, 8 Oct from Perth to Seattle, returning Wed, 15 Oct, priced at £879 just found
Japan Airlines
Sun, 14 Sep - Sun, 21 Sep
PER
Perth
SEA
Seattle
£888 Return, found 1 day ago
£888
Return
found 1 day ago
Select Japan Airlines flight, departing Sun, 14 Sep from Perth to Seattle, returning Sun, 21 Sep, priced at £888 found 1 day ago

Find the cheapest month to fly from Perth (PER) to Seattle (SEA)

August is typically the cheapest month to fly

From £757 - £1,300 per traveller.

Graph displaying average flight prices per month

Flight from Perth to Seattle route information
Origin airport
Perth
Destination airport
Seattle - Tacoma Intl.
Airlines serving
Emirates, Japan Airlines, Qatar Airways, Singapore Airlines
Return price
£845
Distance
14785 km

Compare flights from Perth to Seattle easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from Perth to Seattle. Operating between them flights per day, 20 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 Perth 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 Perth (PER) to Seattle - Tacoma Intl. (SEA)

The easiest way to view the best deals on flights from Perth 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 Perth to Seattle - Tacoma Intl. start at just £846 and range up to £888.  

To find an even better deal, try  

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

Why you should book your Perth to Seattle flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Perth 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 Perth Airport to SEA?
If you're planning on travelling between Perth Airport and Sea-Tac Airport, round-trip journeys start from £846. This price is based on fares listed within the last 7 days on Expedia for flights departing within the next year, so don't let a good deal slip through your fingers. Book now and save yourself both money and time. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from PER to Seattle - Tacoma Intl. Airport (SEA)?
This can vary from airline to airline, as each has its own set of terms and conditions. Head to the Customer Service Portal, where there are instructions on how to cancel online.
How do I find cheap flights from Perth Airport (PER) 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 PER to Seattle - Tacoma Intl. Airport (SEA) flights, you'll see a "no change fees" filter for you to select.
How far is the flight from PER to SEA?
With a flight distance of 14,900 kilometres from Perth Airport (PER) to Sea-Tac Airport (SEA), this is a long journey. Remember to drink plenty of water and go for a short walk down the aisle from time to time.
Which airlines fly direct from Perth Airport (PER) to Sea-Tac Airport?
At the moment, no airlines offer flights directly from PER to Seattle - Tacoma Intl. Airport (SEA). You'll have to book a flight with one or more stops. To score the best price and connections, lock in your fare well ahead of time.
Are Perth Airport to Seattle - Tacoma Intl. Airport (SEA) flight tickets cheaper when they're purchased at the last minute?
Booking your trip from Perth Airport to Sea-Tac Airport last minute could be your ticket to an awesome deal. However, it could end up costing a good deal more! If you'd rather not take any chances, book well ahead of your departure date. In fact, Expedia has some of the biggest bargains up to a year in advance. If your preferred carrier hasn't released tickets yet, check back frequently as deals are updated all the time on Expedia.

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