What is the cheapest airline that flies from Seattle/Tacoma Intl to Perth?

Qatar Airways and Singapore Airlines are the most popular carriers operating from Seattle/Tacoma Intl to Perth

Which layover airport has the shortest connection time from Seattle to Perth?

Singapore (SIN) has the shortest average layover time for this route: 1h 48m.

Which layover airport offers the lowest fares from Seattle to Perth?

Flights via Singapore (SIN) offer the lowest average round-trip price of $1,291.

Which layover airport has the shortest travel time from Seattle to Perth?

Flights connecting via Singapore (SIN) have the shortest average one-way travel time: 23h 10m.

Which airport is the most popular layover for flights between Seattle and Perth?

Hong Kong (HKG) was the most common stop: 50% of momondo users choosing 1-stop flights on this route connected there.

When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Perth Airport?

Prices for flights from Seattle/Tacoma Intl Airport to Perth Airport were last updated today.

How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Perth Airport?

The number of operators available for flights from Seattle/Tacoma Intl Airport to Perth Airport is 2 as of August 2026.

How old do you have to be to fly from Seattle/Tacoma Intl Airport to Perth Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Perth Airport.

What documentation or ID do you need to fly to Perth Airport?

The travel and health documents you'll need for your trip to Perth Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Perth Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$607 Cheap Flights from Seattle to Perth in 2026

Find the cheapest flights from Seattle to Perth

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

12:25 pm - 6:50 amSEA Seattle/Tacoma Intl-PER Perth

27h 25m1 stop Hong Kong Intl

8:20 am - 10:05 amPER Perth-SEA Seattle/Tacoma Intl

40h 45m1 stop Hong Kong Intl

$1,168Cathay Pacific

Mon, Sep 14 - Tue, Sep 22

12:10 am - 4:25 pmSEA Seattle/Tacoma Intl-PER Perth

49h 15m2 stops Incheon Intl Ho Chi Minh City

9:10 pm - 7:10 amPER Perth-SEA Seattle/Tacoma Intl

26h 00m1 stop Singapore Changi

$1,178Multiple Airlines

Mon, Oct 26 - Mon, Nov 23

12:10 am - 4:25 pmSEA Seattle/Tacoma Intl-PER Perth

49h 15m2 stops Incheon Intl Ho Chi Minh City

9:10 pm - 7:10 amPER Perth-SEA Seattle/Tacoma Intl

26h 00m1 stop Singapore Changi

$1,181Multiple Airlines

Mon, Oct 26 - Mon, Nov 23

12:25 pm - 6:50 amSEA Seattle/Tacoma Intl-PER Perth

27h 25m1 stop Hong Kong Intl

12:10 am - 10:20 amPER Perth-SEA Seattle/Tacoma Intl

25h 10m1 stop Hong Kong Intl

$1,192Cathay Pacific

Thu, Sep 3 - Mon, Sep 14

3:50 pm - 6:45 pmSEA Seattle/Tacoma Intl-PER Perth

34h 55m1 stop Doha Hamad Intl

10:45 pm - 11:40 amPER Perth-SEA Seattle/Tacoma Intl

28h 55m1 stop Doha Hamad Intl

$1,294Qatar Airways

Sun, Jan 24 - Tue, Feb 16

3:50 pm - 6:45 pmSEA Seattle/Tacoma Intl-PER Perth

34h 55m1 stop Doha Hamad Intl

10:45 pm - 11:40 amPER Perth-SEA Seattle/Tacoma Intl

28h 55m1 stop Doha Hamad Intl

$1,294Qatar Airways

Tue, Jan 26 - Tue, Feb 16

3:50 pm - 6:45 pmSEA Seattle/Tacoma Intl-PER Perth

34h 55m1 stop Doha Hamad Intl

10:45 pm - 11:40 amPER Perth-SEA Seattle/Tacoma Intl

28h 55m1 stop Doha Hamad Intl

$1,294Qatar Airways

Tue, Jan 26 - Mon, Feb 15

8:45 am - 12:35 pmSEA Seattle/Tacoma Intl-PER Perth

35h 50m1 stop Singapore Changi

1:50 pm - 7:10 amPER Perth-SEA Seattle/Tacoma Intl

33h 20m1 stop Singapore Changi

$1,297Singapore Airlines

Wed, Nov 4 - Thu, Dec 3

8:45 am - 12:05 amSEA Seattle/Tacoma Intl-PER Perth

23h 20m1 stop Singapore Changi

1:50 pm - 7:10 amPER Perth-SEA Seattle/Tacoma Intl

57h 20m1 stop Singapore Changi

$1,378Singapore Airlines

Sun, Nov 22 - Sun, Nov 29

8:45 am - 12:05 amSEA Seattle/Tacoma Intl-PER Perth

23h 20m1 stop Singapore Changi

1:50 pm - 7:10 amPER Perth-SEA Seattle/Tacoma Intl

57h 20m1 stop Singapore Changi

$1,382Singapore Airlines

Sun, Nov 22 - Sun, Nov 29

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Cathay Pacific flights from Seattle to Perth

Our best Cathay Pacific deals on Seattle to Perth flight tickets

Cathay Pacific

Aug 24

SEA12:25 pmSeattle/Tacoma Intl

27h 25m

1 stop

PER6:50 amPerth

Sep 8

PER8:20 amPerth

41h 00m

1 stop

SEA10:20 amSeattle/Tacoma Intl

$1,167

Cathay Pacific

Aug 24

SEA12:25 pmSeattle/Tacoma Intl

27h 25m

1 stop

PER6:50 amPerth

Sep 8

PER8:20 amPerth

41h 00m

1 stop

SEA10:20 amSeattle/Tacoma Intl

$1,175

Cathay Pacific

Aug 17

SEA12:25 pmSeattle/Tacoma Intl

43h 15m

1 stop

PER10:40 pmPerth

Sep 14

PER8:20 amPerth

41h 00m

1 stop

SEA10:20 amSeattle/Tacoma Intl

$1,192

Air Tahiti Nui flights from Seattle to Perth

Our best Air Tahiti Nui deals on Seattle to Perth flight tickets

Air Tahiti Nui

Aug 17

SEA9:18 pmSeattle/Tacoma Intl

72h 52m

3 stops

PER1:10 pmPerth

Sep 14

PER5:35 pmPerth

36h 57m

3 stops

SEA3:32 pmSeattle/Tacoma Intl

$3,271

Air Tahiti Nui

Aug 17

SEA9:18 pmSeattle/Tacoma Intl

72h 52m

3 stops

PER1:10 pmPerth

Sep 14

PER5:35 pmPerth

36h 57m

3 stops

SEA3:32 pmSeattle/Tacoma Intl

$3,713

Air Tahiti Nui

Aug 17

SEA9:18 pmSeattle/Tacoma Intl

72h 52m

3 stops

PER1:10 pmPerth

Sep 14

PER5:35 pmPerth

36h 57m

3 stops

SEA3:32 pmSeattle/Tacoma Intl

$3,714

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattlePerth

SEA Seattle/Tacoma Intl - PER Perth

SEAPER

Seattle/Tacoma Intl

Mon 9/14

12:25 pm-6:50 am

1 stop27h 25m

Perth

Tue 9/22

8:20 am-10:05 am

1 stop40h 45m

$1,168

SeattlePerth

SEA Seattle/Tacoma Intl - PER Perth

SEAPER

Seattle/Tacoma Intl

Mon 10/26

12:10 am-4:25 pm

2 stops49h 15m

Perth

Mon 11/23

9:10 pm-7:10 am

1 stop26h 00m

$1,178

SeattlePerth

SEA Seattle/Tacoma Intl - PER Perth

SEAPER

Seattle/Tacoma Intl

Mon 10/26

12:10 am-4:25 pm

2 stops49h 15m

Perth

Mon 11/23

9:10 pm-7:10 am

1 stop26h 00m

$1,181

Quickest round-trip

SeattlePerth

SEA Seattle/Tacoma Intl - PER Perth

SEAPER

Seattle/Tacoma Intl

Thu 9/3

12:25 pm-6:50 am

1 stop27h 25m

Perth

Mon 9/14

12:10 am-10:20 am

1 stop25h 10m

$1,192

SeattlePerth

SEA Seattle/Tacoma Intl - PER Perth

SEAPER

Seattle/Tacoma Intl

Sun 1/24

3:50 pm-6:45 pm

1 stop34h 55m

Perth

Tue 2/16

10:45 pm-11:40 am

1 stop28h 55m

$1,294

SeattlePerth

SEA Seattle/Tacoma Intl - PER Perth

SEAPER

Seattle/Tacoma Intl

Tue 1/26

3:50 pm-6:45 pm

1 stop34h 55m

Perth

Tue 2/16

10:45 pm-11:40 am

1 stop28h 55m

$1,294

SeattlePerth

SEA Seattle/Tacoma Intl - PER Perth

SEAPER

Seattle/Tacoma Intl

Tue 1/26

3:50 pm-6:45 pm

1 stop34h 55m

Perth

Mon 2/15

10:45 pm-11:40 am

1 stop28h 55m

$1,294

SeattlePerth

SEA Seattle/Tacoma Intl - PER Perth

SEAPER

Seattle/Tacoma Intl

Wed 11/4

8:45 am-12:35 pm

1 stop35h 50m

Perth

Thu 12/3

1:50 pm-7:10 am

1 stop33h 20m

$1,297

SeattlePerth

SEA Seattle/Tacoma Intl - PER Perth

SEAPER

Seattle/Tacoma Intl

Sun 11/22

8:45 am-12:05 am

1 stop23h 20m

Perth

Sun 11/29

1:50 pm-7:10 am

1 stop57h 20m

$1,378

SeattlePerth

SEA Seattle/Tacoma Intl - PER Perth

SEAPER

Seattle/Tacoma Intl

Sun 11/22

8:45 am-12:05 am

1 stop23h 20m

Perth

Sun 11/29

1:50 pm-7:10 am

1 stop57h 20m

$1,382

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Seattle to Perth

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Layovers

What is the cheapest month to fly to Perth?

In general, July is the cheapest month to fly from Seattle to Perth. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $0. If you are unable to visit Perth during the month of July, then departing from Seattle during the month June is also very affordable. Most momondo users find prices during this month for around $1,231.

Can stopping save me money on Seattle to Perth flights?

You could potentially save up to 14% on your flight if you consider stops on a Seattle to Perth flight.

How have Seattle to Perth flight prices changed over time?

When to book flights from Seattle to Perth

Are you open to changing your travel dates? Check out the ideal times to fly from Seattle to Perth according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Seattle to Perth (SEA to PER) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Perth

Fastest flight time	27h 25m
Direct flights	None

The fastest flight from Seattle to Perth takes 27h 25m

There are no direct flights from Seattle to Perth. There are no popular flight routes from Seattle to Perth.

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Frequently asked questions about flying from Seattle to Perth

How far is Seattle/Tacoma Intl to Perth by plane?
There are 9239.1 mi between Seattle/Tacoma Intl and Perth. 27h 25m is a normal flight duration for this route.
When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Perth Airport?
Prices for flights from Seattle/Tacoma Intl Airport to Perth Airport were last updated today.
How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Perth Airport?
The number of operators available for flights from Seattle/Tacoma Intl Airport to Perth Airport is 2 as of August 2026.
How old do you have to be to fly from Seattle/Tacoma Intl Airport to Perth Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Perth Airport.
What documentation or ID do you need to fly to Perth Airport?
The travel and health documents you'll need for your trip to Perth Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Perth Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Seattle to Perth?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Seattle to Perth is Singapore Airlines (75% of total bookings). The next most popular airline is Qatar Airways (25%).

Best airlines flying from Seattle to Perth

Compare and see reviews for airlines that fly from Seattle to Perth with momondo

Airline	Rating	Free Cancellation	Price
Singapore Airlines	PriceFrom $1,232	Free Cancellation	Rating 8.2 1,584 reviews		Search Singapore Airlines flights
Qatar Airways	PriceFrom $1,240	Free Cancellation	Rating 7.4 3,740 reviews		Search Qatar Airways flights

Rottnest Island

Fremantle

Mandurah

Scarborough

Waikiki

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to Perth?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Seattle to Perth. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Seattle to Perth with flexible booking policies on momondo?

Flights from Seattle to Perth with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Seattle to Perth?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Perth from Seattle.

I’m not ready to book a flight from Seattle to Perth right now. Can momondo alert me if prices change?

Price alerts on flights to Perth from Seattle are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.