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$585 Cheap Flights from Seattle (SEA) to Perth (PER)

View $585 flight on Mon, Nov 30, 2026Opens in a new window

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

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Cheap Flights from Seattle to Perth (SEA-PER)

Prices were available within the past 7 days and start at $585 for one-way flights and $1,189 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Philippine Airlines
Mon, Mar 8 - Mon, Mar 22
SEA
Seattle
PER
Perth
$1,189 Roundtrip, found 1 day ago
$1,189
Roundtrip
found 1 day ago
Select Philippine Airlines flight, departing Mon, Mar 8 from Seattle to Perth, returning Mon, Mar 22, priced at $1,189 found 1 day ago
Philippine Airlines
Fri, Sep 25 - Thu, Oct 22
SEA
Seattle
PER
Perth
$1,220 Roundtrip, found 6 days ago
$1,220
Roundtrip
found 6 days ago
Select Philippine Airlines flight, departing Fri, Sep 25 from Seattle to Perth, returning Thu, Oct 22, priced at $1,220 found 6 days ago
Philippine Airlines
Mon, Feb 8 - Thu, Feb 25
SEA
Seattle
PER
Perth
$1,282 Roundtrip, found 21 hours ago
$1,282
Roundtrip
found 21 hours ago
Select Philippine Airlines flight, departing Mon, Feb 8 from Seattle to Perth, returning Thu, Feb 25, priced at $1,282 found 21 hours ago
American Airlines
Mon, Aug 3 - Mon, Aug 17
SEA
Seattle
PER
Perth
$1,310 Roundtrip, found 14 hours ago
$1,310
Roundtrip
found 14 hours ago
Select American Airlines flight, departing Mon, Aug 3 from Seattle to Perth, returning Mon, Aug 17, priced at $1,310 found 14 hours ago
Philippine Airlines
Mon, Feb 1 - Mon, Feb 15
SEA
Seattle
PER
Perth
$1,332 Roundtrip, found 5 days ago
$1,332
Roundtrip
found 5 days ago
Select Philippine Airlines flight, departing Mon, Feb 1 from Seattle to Perth, returning Mon, Feb 15, priced at $1,332 found 5 days ago
American Airlines
Mon, Aug 17 - Mon, Sep 7
SEA
Seattle
PER
Perth
$1,359 Roundtrip, found 2 hours ago
$1,359
Roundtrip
found 2 hours ago
Select American Airlines flight, departing Mon, Aug 17 from Seattle to Perth, returning Mon, Sep 7, priced at $1,359 found 2 hours ago
Philippine Airlines
Fri, Aug 7 - Thu, Aug 20
SEA
Seattle
PER
Perth
$1,361 Roundtrip, found 3 days ago
$1,361
Roundtrip
found 3 days ago
Select Philippine Airlines flight, departing Fri, Aug 7 from Seattle to Perth, returning Thu, Aug 20, priced at $1,361 found 3 days ago
Singapore Airlines
Tue, Oct 20 - Tue, Nov 10
SEA
Seattle
PER
Perth
$1,372 Roundtrip, found 5 hours ago
$1,372
Roundtrip
found 5 hours ago
Select Singapore Airlines flight, departing Tue, Oct 20 from Seattle to Perth, returning Tue, Nov 10, priced at $1,372 found 5 hours ago
Qatar Airways
Sun, Apr 4 - Fri, Apr 30
SEA
Seattle
PER
Perth
$1,378 Roundtrip, found 1 day ago
$1,378
Roundtrip
found 1 day ago
Select Qatar Airways flight, departing Sun, Apr 4 from Seattle to Perth, returning Fri, Apr 30, priced at $1,378 found 1 day ago
United
Mon, Aug 17 - Mon, Sep 7
SEA
Seattle
PER
Perth
$1,386 Roundtrip, found 2 hours ago
$1,386
Roundtrip
found 2 hours ago
Select United flight, departing Mon, Aug 17 from Seattle to Perth, returning Mon, Sep 7, priced at $1,386 found 2 hours ago

Alternative airports near Perth

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

Select flight to Perth Airport PER. Cheapest and Closest option available. Average driving time to city center is 14 minutes. Flights from $1,691
PER
Perth Airport
CheapestClosest
Average driving time to city center14 min
Flights from $1,691

What you need to know for your flight from Seattle - Tacoma Intl. to Perth

Seattle (SEA) to Perth (PER) at a glance

Embark on an adventure from Seattle (SEA) to Perth (PER) with a range of airlines offering convenient international long-haul flights. Explore various options from full-service carriers to find the best itinerary that aligns with your budget, schedule, and travel plans. As you prepare to visit Perth's iconic attractions and vibrant neighborhoods, gather all the essential information on flights from Seattle - Tacoma International Airport to Perth Airport.

  • Fastest flight duration: around 22 hours in-flight, plus roughly 2h 45m layover with one stop
  • Route distance: roughly 9,200 miles (14,810 km)
  • Flights per week: around 8 departures on average
  • Typical fares (one-way): economy tickets often range from $630–$1650, depending on seasonality and how far ahead you book

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

Based on recent traveler bookings, here are the top airlines favored for flights from Seattle to Perth, particularly for one-stop and multi-stop journeys. Many travelers opt for layovers at Hamad International Airport (DOH) with an approximate 2-hour and 45-minute wait, allowing you to mix and match prices, total travel times, and cabin classes to create the best travel itinerary.

  • Singapore Airlines: This full-service airline provides a one-stop travel experience, with one-way ticket prices generally ranging from $630 to $1450. It represents around 27% of the flights on this route. The in-flight duration is 22 hours, while the overall travel time, accounting for layovers, is approximately 28 hours.
  • Qatar Airways: As a full-service carrier, Qatar Airways offers one-stop service with one-way fares typically falling between $770 and $1820. This airline contributes to about 23% of departures on this route. Passengers can expect an in-flight time of 22 hours and a total journey length of roughly 28 hours, including layover time.
  • Qantas Airways: This full-service airline features a multi-stop service, with one-way fares usually ranging from $665 to $850. It accounts for about 20% of the departures on this route. In-flight time is approximately 22 hours and 30 minutes, while the entire journey, including layovers, takes around 29 hours and 45 minutes.

Alternative route from Seattle (SEA) to Perth (PER)

  • Seattle to Rottnest Island (SEA-RTS): Rottnest Island Airport (RTS) is located approximately 25 miles from Perth Airport (PER).

How to find the best prices for flights from Seattle (SEA) to Perth (PER)

Getting some of the best deals on flights from Seattle to Perth is all about timing and flexibility. Here are some key tips to help you save:

  1. Best times to book and fly: cheaper fares are usually found when booking 2 to 8 weeks in advance, although most travelers tend to book at least 2 months ahead. Morning departures (5 a.m. to 12 p.m.) often offer lower prices, even though afternoon flights (12 p.m. to 6 p.m.) are more popular. Additionally, flying on Monday generally provides cheaper rates, while Thursday is the most popular travel day.
  2. Set up price alerts: stay updated on price changes by using Expedia's Price Tracker. Receive alerts when fares drop for your selected route.
  3. Bundle and save: bundle your flight and hotel to save on Expedia, or unlock a hotel deal after booking your flight.*
  4. Compare flight options: use Expedia's search tool to compare airlines, routes, direct vs. non-direct flights, and flight times. You can also sort by price to find the most affordable options.
  5. Stay flexible with dates: being open to different travel days can sometimes help you find better prices on flights and hotels.
  6. Think about luggage: nowadays, it's important to check the airline's baggage policies to find the best value. That may be paying for an additional carry-on bag or booking a ticket with checked luggage included. Either way, double-check your allowance before confirming your booking to avoid excess baggage fees at the airport.

*Members only. Savings vary and are not available on all bundles. Select hotels.

Arriving at Perth Airport from Seattle - Tacoma International Airport

Perth welcomes travelers from Seattle with a range of transport options based on price, convenience, and proximity. For departures, Seattle - Tacoma International Airport is roughly a 20-minute drive (covering about 14 miles) from central Seattle. Here's how to reach Perth efficiently:

  • Hotel transfer: Transfers offer a convenient way to reach your hotel in Perth, with private rides that can be arranged in advance.
  • Car rental: Renting a car from Perth Airport is a great option if you plan to explore and sightsee beyond the city. Browse cheap car rentals at Perth Airport on Expedia.
  • Taxi/ride-hailing: Taxis and ride-hailing services may be available from designated pickup areas outside the terminal, check locally on arrival.
  • Public transportation: From Perth Airport, the Seaport, a seaport, is located just 0.1 miles away on foot, while Bassendean Ashfield Station, a train station, is about 3.1 miles from the airport and is accessible by car. For ferry travel, Barrack Street Jetty Ferry Terminal is situated approximately 7.9 miles away, also reachable by car.

Frequently asked questions

How much does a flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Perth, WA (PER) cost?
You can find cheap one-way flights from $585 and cheap return flights from $1,189 Seattle, WA (SEA-Seattle - Tacoma Intl.) to Perth, WA (PER) with Expedia. One-way flights usually range from $752 to $7062, and return flights typically cost between $1892 and $11065. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Seattle, WA (SEA-Seattle - Tacoma Intl.) to Perth, WA (PER) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Perth, WA (PER)?
The cheapest month to fly from SEA to PER is March when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you're able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Perth, WA (PER)?
Enter SEA to PER and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Perth, WA (PER)?
Qantas Airways is one of the cheapest airlines offering connecting flights from Seattle - Tacoma Intl. (SEA) to Perth (PER) with a layover in Los Angeles Intl. (LAX), starting from around $2,408 for a round-trip ticket. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Perth, WA (PER)?
To find a cheap flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Perth, WA (PER), 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 Seattle, WA (SEA-Seattle - Tacoma Intl.) to Perth, WA (PER)?
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.
What is the earliest flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Perth, WA (PER)?
Sort flights by "Departure (earliest)" on Expedia to find the earliest flight from SEA to PER. To compare more early flights, use the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Perth, WA (PER)?
The most popular departure times for flights from Seattle - Tacoma Intl. (SEA) to Perth (PER) are in the late afternoon to early evening, from 3pm to 6pm. About 42% of passengers prefer this time window. Many major carriers, including Qatar Airways, Emirates and United Airlines, offer flights during this window. This timing works well because it allows you to enjoy a full day in Seattle before your flight.
How long does it take to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Perth, WA (PER)?
A flight from SEA to PER with a layover takes around 23 hours 20 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 Seattle, WA (SEA-Seattle - Tacoma Intl.) to Perth, WA (PER)?
Business class seats are offered on the SEA to PER route. Airlines that offer business class service on this route include:

  • United Airlines
  • Emirates
  • American Airlines
  • Qatar Airways
  • Singapore Airlines
  • Philippine Airlines
  • British Airways
  • Asiana Airlines
  • Air Canada

First class is available with Emirates.
How do I earn miles on a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Perth, WA (PER) flight with Expedia?
It's easy to earn miles on a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Perth, WA (PER) 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.
Is it cheaper to buy a plane ticket from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Perth, WA (PER) at the last minute?
Typically, booking a last minute flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Perth, WA (PER) 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 Seattle, WA (SEA-Seattle - Tacoma Intl.) to Perth, WA (PER) flight and hotel package?
Securing a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Perth, WA (PER) Perth Vacation Packages 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 Seattle, WA (SEA-Seattle - Tacoma Intl.) to Perth, WA (PER)?
If you booked your Seattle, WA (SEA-Seattle - Tacoma Intl.) to Perth, WA (PER) 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
Seattle - Tacoma Intl.
Destination airport
Perth
Airlines serving
Air Canada, Air New Zealand, Alaska Airlines, All Nippon Airways, American Airlines, Cathay Pacific, Emirates, Japan Airlines, Lufthansa, Malaysia Airlines, Philippine Airlines, Qantas Airways, Qatar Airways, Singapore Airlines, United
Roundtrip price
$1,189
Distance
9240 mi

Book with confidence

Seattle to Perth Flights

The cheapest times to fly from Seattle to Perth

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

 

The best time to book a flight from Seattle to Perth

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

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 Seattle to Perth in 2026. You can also book with separate airlines for your outbound and return journeys, from $585 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 Seattle to Perth 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 Seattle to Perth 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.

 

Seattle to Perth Flights

*Flight schedules are subject to change.

*Available to One Key members.

 

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