$454 Flights from Seattle (SEAA) to Perth (PER)

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Flight deals from Seattle to Perth

Looking for a cheap last-minute deal or the best round-trip flight from Seattle to Perth? Find the lowest prices on one-way and round-trip tickets right here.

Find the cheapest month to fly from Seattle to Perth from $454 one-way

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Seattle to Perth flights are currently cheapest in April.

Seattle to Perth: Alternative routes

Compare routes from Seattle to Perth below. You may find an airport to fly into that's cheaper, faster, or easier than Perth.

Seattle to Perth: Flight information

The things to know before you go.
Cheapest flight found$454
Cheapest month to flyApril

Finding cheap flights from Seattle to Perth: Frequently asked questions

The best price we found for a round-trip flight from Seattle to Perth is $988. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Seattle to Perth. But we found flights with one stop from $988.
There are no flights flying from Seattle to Perth, as of February 2026.
The cheapest month to fly from Seattle to Perth is usually April.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Seattle to Perth Airport on Wednesday, April 8, 2026.
No airlines currently offer direct flights between Seattle and Perth Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Perth but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar, and it looks like the cheapest time to book a flight to Perth is around 40 days in advance, so don’t leave your flight to the last minute.
The cheapest airline that flies to Perth is Cathay Pacific.

Flying from Seattle to Perth Airport (PER): What you need to know

  • Seattle has a couple of airports where you can start your adventure. Check out your options for booking a flight from Seattle to Perth Airport (PER) heading out from Seattle-Tacoma International Airport (SEA) or Lake Union Sea Plane Base Airport (LKE).

  • Perth is 15 hours ahead of Seattle. Perth Airport is located in Perth, which operates on the UTC+8 timezone.

  • Arriving two hours before an international flight and one hour ahead of a domestic departure are golden rules for stress-free travel. Make sure you're at the airport on time to board your flight from Seattle to PER.

  • If you're flying during a public holiday or other peak period, allow extra time. Get there two hours ahead of domestic flights and up to four hours before international departures. Security and check-in lines will be longer.

Airports in Seattle

Seattle-Tacoma International Airport (SEA)

  • We make it simple to find cheap flights from Seattle to PER with a stopover. To explore all your options leaving from Seattle-Tacoma International Airport (SEA), uncheck 'Direct flights only.' Then, choose a flight offering a stop long enough to tour your chosen city. Popular stopovers between SEA and PER include:

    • London Heathrow Airport (LHR)

    • Dubai Airport (DXB)

    • Charles de Gaulle Airport (CDG)

  • Located around 14 miles from the center of Seattle, SEA can be reached in about 20 minutes by car (depending on traffic). The journey on public transport is roughly 55 minutes.

  • Want a stress-free start to your vacation? Stay near Seattle-Tacoma International Airport. Whether you're catching an early flight from Seattle to Perth Airport or just don't want to be rushed, these hotels are the ideal choice:

  • Seattle-Tacoma International Airport has a strong on-time record, reducing the likelihood of delays. Departures from SEA land at their destination as scheduled 81.27% of the time.

Lake Union Sea Plane Base Airport (LKE)

  • Using public transport, you can travel from central Seattle to LKE in around 25 minutes. The terminal is roughly 2 miles away, and getting there by car will take approximately 10 minutes.

  • Start your vacation early with an extra night away from home. Before catching your Seattle to PER flight, unwind in one of these hotels close to Lake Union Sea Plane Base Airport:

About Perth Airport (PER)

Getting from Perth Airport (PER) to central Perth

  • From Perth Airport, central Perth is around 10 miles away. It takes about 20 minutes to get to the city center by car.

  • It'll take around 30 minutes if you're traveling on public transport.

How to find the cheapest flights from Seattle to Perth Airport (PER)

  • Right now, $454 is the lowest price we've found for a one-way ticket from Seattle to Perth Airport. The cheapest price for a return flight is $988. Keep in mind fares can change due to availability at the time of booking.

  • To find cheap flights from Seattle to PER, book in advance. Airlines usually offer lower prices when tickets first go on sale.

  • Affordable Seattle to Perth Airport tickets are easier to find when your travel dates are flexible. Try using the 'Whole month' tool to compare fares throughout the month and then choose the cheapest day.

  • Snapping up a cheap plane ticket from Seattle to PER couldn't be easier with Price Alerts. All you need to do is create one of these automatic alerts and we'll get in touch as soon as a better deal is available.

  • Tailor your flights using filters. Choose your ideal arrival and departure times, total journey duration and airlines. You can also sort your results by 'Fastest,' 'Best' or 'Cheapest' flights from Seattle to Perth Airport.

The best time to fly from Seattle to Perth Airport (PER)

  • It's time to decide your travel dates for your flight from Seattle to Perth Airport (PER). July is the peak month for travel to Perth. If you prefer a quieter vibe, go in February.

  • Before locking in your Seattle to PER plane ticket, consider the type of weather you enjoy. January is the warmest month in Perth, with temperatures ranging from 63ºF to 95ºF.

  • August has temperatures of between 46ºF and 68ºF. Search for cheap tickets from Seattle to Perth Airport around that time if you want to travel in cooler conditions.

More about Perth

  • After booking your flight from Seattle to Perth Airport, find a hotel that puts you in a great location. Make one of these options your base for exploring Perth:

  • Cottesloe Beach and Kings Park Observation Tower are just the start of the leading attractions to put on your Perth to-do list. Keep the adventure rolling by checking out City Beach.

Explore more of Australia

  • Bunbury is just one of the many cities in Australia waiting to be explored once you've seen the sights of Perth. Around 100 miles away to the south, well-known attractions include Koombana Bay, Dolphin Cove and Leschenault Peninsula Conservation Park.

  • If you're eager to discover another great destination in Australia, head for Busselton, roughly 120 miles south of Perth. Underwater Observatory, Abbey Beach and Busselton Jetty are among its highlights.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.