£693 Cheap Flights from Perth (PER) to Seattle (SEA)

View £693 flight on Mon, 8 Jun 2026Opens in a new window

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

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

Prices were available within the past 7 days and start at £693 for one-way flights and £1,244 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Jetstar
Tue, 8 Dec - Sat, 23 Jan
PER
Perth
SEA
Seattle
£1,244 Return, found 4 days ago
£1,244
Return
found 4 days ago
Select Jetstar flight, departing Tue, 8 Dec from Perth to Seattle, returning Sat, 23 Jan, priced at £1,244 found 4 days ago
Virgin Australia
Tue, 8 Dec - Sat, 23 Jan
PER
Perth
SEA
Seattle
£1,247 Return, found 4 days ago
£1,247
Return
found 4 days ago
Select Virgin Australia flight, departing Tue, 8 Dec from Perth to Seattle, returning Sat, 23 Jan, priced at £1,247 found 4 days ago
Virgin Australia
Tue, 8 Dec - Sat, 23 Jan
PER
Perth
SEA
Seattle
£1,250 Return, found 4 days ago
£1,250
Return
found 4 days ago
Select Virgin Australia flight, departing Tue, 8 Dec from Perth to Seattle, returning Sat, 23 Jan, priced at £1,250 found 4 days ago
Virgin Australia
Tue, 8 Dec - Sat, 23 Jan
PER
Perth
SEA
Seattle
£1,252 Return, found 4 days ago
£1,252
Return
found 4 days ago
Select Virgin Australia flight, departing Tue, 8 Dec from Perth to Seattle, returning Sat, 23 Jan, priced at £1,252 found 4 days ago
Virgin Australia
Tue, 8 Dec - Sat, 23 Jan
PER
Perth
SEA
Seattle
£1,256 Return, found 4 days ago
£1,256
Return
found 4 days ago
Select Virgin Australia flight, departing Tue, 8 Dec from Perth to Seattle, returning Sat, 23 Jan, priced at £1,256 found 4 days ago
Qantas Airways
Tue, 8 Dec - Sat, 23 Jan
PER
Perth
SEA
Seattle
£1,263 Return, found 4 days ago
£1,263
Return
found 4 days ago
Select Qantas Airways flight, departing Tue, 8 Dec from Perth to Seattle, returning Sat, 23 Jan, priced at £1,263 found 4 days ago
Qantas Airways
Tue, 8 Dec - Sat, 23 Jan
PER
Perth
SEA
Seattle
£1,267 Return, found 4 days ago
£1,267
Return
found 4 days ago
Select Qantas Airways flight, departing Tue, 8 Dec from Perth to Seattle, returning Sat, 23 Jan, priced at £1,267 found 4 days ago
Japan Airlines
Fri, 21 Aug - Mon, 31 Aug
PER
Perth
SEA
Seattle
£1,273 Return, found 3 hours ago
£1,273
Return
found 3 hours ago
Select Japan Airlines flight, departing Fri, 21 Aug from Perth to Seattle, returning Mon, 31 Aug, priced at £1,273 found 3 hours ago
Japan Airlines
Fri, 21 Aug - Mon, 31 Aug
PER
Perth
SEA
Seattle
£1,278 Return, found 3 hours ago
£1,278
Return
found 3 hours ago
Select Japan Airlines flight, departing Fri, 21 Aug from Perth to Seattle, returning Mon, 31 Aug, priced at £1,278 found 3 hours ago
United
Tue, 8 Dec - Sat, 23 Jan
PER
Perth
SEA
Seattle
£1,306 Return, found 4 days ago
£1,306
Return
found 4 days ago
Select United flight, departing Tue, 8 Dec from Perth to Seattle, returning Sat, 23 Jan, priced at £1,306 found 4 days ago

Frequently asked questions

How do I find cheap flights from Perth, WA (PER) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
To find a cheap flight from Perth, WA (PER) to Seattle, WA (SEA-Seattle - Tacoma Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Perth, WA (PER) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
How many flights per day from Perth, WA (PER) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
There are approximately 34 connecting flights per day from Perth, WA (PER) to Seattle, WA (SEA-Seattle - Tacoma Intl.). Some common connection points include Kingsford Smith Intl. (SYD), Tullamarine (MEL), and Unknown (BNE).
What is the earliest flight from Perth, WA (PER) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The earliest flight from Perth, WA (PER) to Seattle, WA (SEA-Seattle - Tacoma Intl.) typically departs at approximately 12:10 AM local time. This service is operated by Cathay Pacific and Air Canada. This is a seasonal service active in June, August, and September. An early departure like this can help you maximise your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Perth, WA (PER) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
You'll find the most flights from Perth, WA (PER) to Seattle, WA (SEA-Seattle - Tacoma Intl.) on a Wednesday, with around 34 flights available. This gives you a good selection of options for your journey. Major airlines on this route include Qantas, Virgin Australia, and Singapore Airlines. Flight schedules are consistent throughout the week, so you'll have plenty of options regardless of your travel day.
What are the most popular departure times for flights from Perth, WA (PER) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The most popular departure times for flights from Perth, WA (PER) to Seattle, WA (SEA-Seattle - Tacoma Intl.) are in the late evening, from 9pm to midnight. This accounts for around 54% of total traffic. Many major carriers, including Virgin Australia, United Airlines and Qantas Airways, offer flights during this window. Travelers often prefer these times as they allow for a full day in Perth before departure, and you'll arrive in Seattle ready to start your day.
How long does it take to fly from Perth, WA (PER) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
A flight from PER to SEA with a layover takes around 22 hours 30 minutes, with the route covering approximately 9,242 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Perth, WA (PER) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
Select the "Business class" and "First class" filters when looking for PER to SEA flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a Perth, WA (PER) to Seattle, WA (SEA-Seattle - Tacoma Intl.) flight with Expedia?
It's easy to earn miles on a Perth, WA (PER) to Seattle, WA (SEA-Seattle - Tacoma Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia. *Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Seattle from PER (PER)?
If you're planning to travel to Seattle from PER (PER), you can fly directly into Seattle - Tacoma Intl. (SEA) Some flights may connect through major hubs like Kingsford Smith Intl. (SYD), Tullamarine (MEL), BNE (BNE) before reaching Seattle. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Perth, WA (PER) to Seattle, WA (SEA-Seattle - Tacoma Intl.) at the last minute?
Typically, booking a last minute flight from Perth, WA (PER) to Seattle, WA (SEA-Seattle - Tacoma Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Perth, WA (PER) to Seattle, WA (SEA-Seattle - Tacoma Intl.) flight and hotel package?
Securing a Perth, WA (PER) to Seattle, WA (SEA-Seattle - Tacoma Intl.) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Perth, WA (PER) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
If you booked your Perth, WA (PER) to Seattle, WA (SEA-Seattle - Tacoma Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Perth
Destination airport
Seattle - Tacoma Intl.
Return price
£1,243
Distance
14785 km

Book with confidence

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 £1,244 and range up to £1,306.  

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 December, 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.  

Compare flights from Perth to Seattle easily and book with confidence

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*Available to Expedia members.