$616 Cheap Flights from Perth (PER) to Seattle (SEA)

View $616 flight on Thu, Feb 26, 2026Opens in a new window

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

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Cheap Flights from Perth to Seattle (PER-SEA)

Prices were available within the past 7 days and start at $616 for one-way flights and $937 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Japan Airlines
Thu, Jan 29 - Mon, Feb 16
PER
Perth
SEA
Seattle
$937 Roundtrip, found 3 days ago
$937
Roundtrip
found 3 days ago
Select Japan Airlines flight, departing Thu, Jan 29 from Perth to Seattle, returning Mon, Feb 16, priced at $937 found 3 days ago
Philippine Airlines
Thu, Feb 5 - Fri, Feb 20
PER
Perth
SEA
Seattle
$990 Roundtrip, found 3 days ago
$990
Roundtrip
found 3 days ago
Select Philippine Airlines flight, departing Thu, Feb 5 from Perth to Seattle, returning Fri, Feb 20, priced at $990 found 3 days ago
Japan Airlines
Thu, Jan 29 - Wed, Feb 18
PER
Perth
SEA
Seattle
$991 Roundtrip, found 3 days ago
$991
Roundtrip
found 3 days ago
Select Japan Airlines flight, departing Thu, Jan 29 from Perth to Seattle, returning Wed, Feb 18, priced at $991 found 3 days ago
Philippine Airlines
Thu, Feb 26 - Fri, Mar 13
PER
Perth
SEA
Seattle
$1,039 Roundtrip, found 3 days ago
$1,039
Roundtrip
found 3 days ago
Select Philippine Airlines flight, departing Thu, Feb 26 from Perth to Seattle, returning Fri, Mar 13, priced at $1,039 found 3 days ago
Cathay Pacific
Thu, Apr 16 - Mon, Apr 20
PER
Perth
SEA
Seattle
$1,042 Roundtrip, found 3 days ago
$1,042
Roundtrip
found 3 days ago
Select Cathay Pacific flight, departing Thu, Apr 16 from Perth to Seattle, returning Mon, Apr 20, priced at $1,042 found 3 days ago
Japan Airlines
Fri, Jan 30 - Wed, Feb 18
PER
Perth
SEA
Seattle
$1,044 Roundtrip, found 3 days ago
$1,044
Roundtrip
found 3 days ago
Select Japan Airlines flight, departing Fri, Jan 30 from Perth to Seattle, returning Wed, Feb 18, priced at $1,044 found 3 days ago
Japan Airlines
Tue, Nov 11 - Wed, Nov 26
PER
Perth
SEA
Seattle
$1,046 Roundtrip, found 4 days ago
$1,046
Roundtrip
found 4 days ago
Select Japan Airlines flight, departing Tue, Nov 11 from Perth to Seattle, returning Wed, Nov 26, priced at $1,046 found 4 days ago
Japan Airlines
Thu, Jan 29 - Tue, Feb 17
PER
Perth
SEA
Seattle
$1,047 Roundtrip, found 3 days ago
$1,047
Roundtrip
found 3 days ago
Select Japan Airlines flight, departing Thu, Jan 29 from Perth to Seattle, returning Tue, Feb 17, priced at $1,047 found 3 days ago
Qantas Airways
Mon, Nov 3 - Wed, Nov 12
PER
Perth
SEA
Seattle
$1,144 Roundtrip, found 17 hours ago
$1,144
Roundtrip
found 17 hours ago
Select Qantas Airways flight, departing Mon, Nov 3 from Perth to Seattle, returning Wed, Nov 12, priced at $1,144 found 17 hours ago
Air Canada
Tue, Nov 25 - Tue, Jan 27
PER
Perth
SEA
Seattle
$1,407 Roundtrip, found 14 hours ago
$1,407
Roundtrip
found 14 hours ago
Select Air Canada flight, departing Tue, Nov 25 from Perth to Seattle, returning Tue, Jan 27, priced at $1,407 found 14 hours ago

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

September is typically the cheapest month to fly

From $944 - $1,688 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 $1,608
SEA
Seattle - Tacoma Intl.
Cheapest
Average driving time to city center20 min
Flights from $1,608

Frequently asked questions

How much does a flight from Perth Airport (PER) to Seattle - Tacoma Intl. Airport (SEA) cost?
Get a cheap one-way flight from $616 or cheap return flight from $937 from Perth Airport (PER) to Seattle - Tacoma Intl. Airport (SEA) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Perth Airport (PER) to Seattle - Tacoma Intl. Airport (SEA)?
The cheapest month to fly from PER to SEA is January, when there's less demand. Off-peak months are often when airlines offer better prices between these airports.
What is the cheapest airline that flies from Perth Airport (PER) to Seattle - Tacoma Intl. Airport (SEA)?
To find the cheapest airline flying from PER to SEA, use Expedia's filter tool. Customize your search based on what's important to you, such as preferred carriers and number of stops. You can then sort your results by "Price (lowest to highest)" to list the most affordable options first.
How many flights per day from Perth Airport (PER) to Seattle - Tacoma Intl. Airport (SEA)?
There aren't any daily direct flights available from Perth Airport (PER) to Seattle - Tacoma Intl. Airport (SEA). But you can book flights with layovers. Filter your search on Expedia to include one or more stops, and you'll be soaring above the clouds before you know it.
What day of the week has the most flights from PER to SEA?
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 Perth Airport (PER) to Seattle - Tacoma Intl. Airport (SEA)?
To touch down at Seattle - Tacoma Intl. Airport (SEA) without delays, select a flight that leaves Perth Airport (PER) 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 Perth Airport (PER) to Seattle - Tacoma Intl. Airport (SEA) last-minute?
Last-minute fares from PER to SEA are generally more expensive. To secure the lowest rates, start searching for flights well ahead of time. That said, if you can play around with your travel dates, it's possible to land a cheap fare right before your journey.
Is it cheaper to book a PER to SEA flight and hotel package?
You'll typically save money by securing a PER to SEA flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's easy to manage everything in one place. After selecting your ideal flights and accommodations, consider adding extras such as tours, activities and car rentals.
Can I cancel or change the date of my flight from Perth Airport (PER) to Seattle - Tacoma Intl. Airport (SEA)?
It's usually possible to reschedule or cancel your PER to SEA flight. However, for bookings made more than 24 hours ago, additional charges may apply. Check your airline's policies in your itinerary to see what changes are possible and if any costs are involved. You'll also find more information on our Customer Service portal.

Travel information

Origin airport
Perth
Destination airport
Seattle - Tacoma Intl.
Roundtrip price
$937
Distance
9240 mi

Book with confidence

Perth to Seattle Flights

The cheapest times to fly from Perth 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 Perth to Seattle are during the month of January. You can find some of the cheapest flights from Perth to Seattle with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Perth to Seattle

Sunday is one of the best days to book for cheap flights from Perth 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 Perth 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 Perth to Seattle in 2025. You can also book with separate airlines for your outbound and return journeys, from $616 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 Perth 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 Perth 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.

 

Perth to Seattle Flights

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*Available to One Key members.