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

Philippine Airlines is the most popular carrier operating from Seattle/Tacoma Intl to Perth

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 refresh daily.

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

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and stopovers. 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 necessary travel and health documents for your Perth Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's licence and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$935 Cheap Flights from Seattle to Perth in 2026

1 adult

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Find the cheapest flights from Seattle to Perth

Round-trip

One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

11:45 - 22:40

SEA

PER

43h 55m

1 stop

08:20 - 10:05

PER

SEA

40h 45m

1 stop

$1,420Cathay Pacific

Tue, 7 Apr - Tue, 28 Apr

11:45 - 06:50

SEA

PER

28h 05m

1 stop

00:10 - 15:50

PER

SEA

30h 40m

2 stops

$1,540Cathay Pacific

Tue, 7 Apr - Mon, 27 Apr

08:41 - 06:50

SEA

PER

55h 09m

2 stops

08:20 - 10:05

PER

SEA

40h 45m

1 stop

$1,545Cathay Pacific

Sun, 5 Apr - Sun, 19 Apr

18:59 - 06:50

SEA

PER

44h 51m

2 stops

00:10 - 10:05

PER

SEA

24h 55m

1 stop

$1,551Cathay Pacific

Wed, 1 Apr - Tue, 14 Apr

11:45 - 22:40

SEA

PER

43h 55m

1 stop

00:10 - 10:05

PER

SEA

24h 55m

1 stop

$1,632Cathay Pacific

Wed, 1 Apr - Tue, 14 Apr

08:41 - 06:50

SEA

PER

31h 09m

2 stops

00:10 - 15:50

PER

SEA

30h 40m

2 stops

$1,663Cathay Pacific

Tue, 7 Apr - Mon, 27 Apr

08:41 - 06:50

SEA

PER

31h 09m

2 stops

08:20 - 19:02

PER

SEA

49h 42m

2 stops

$1,669Cathay Pacific

Tue, 7 Apr - Tue, 28 Apr

18:59 - 06:50

SEA

PER

44h 51m

2 stops

00:10 - 15:42

PER

SEA

30h 32m

2 stops

$1,672Cathay Pacific

Wed, 1 Apr - Tue, 14 Apr

08:41 - 06:50

SEA

PER

55h 09m

2 stops

08:20 - 08:47

PER

SEA

39h 27m

2 stops

$1,685Cathay Pacific

Sun, 5 Apr - Sun, 19 Apr

08:45 - 04:15

SEA

PER

27h 30m

1 stop

07:35 - 19:10

PER

SEA

26h 35m

2 stops

$1,714Multiple Airlines

Sun, 1 Mar - Sat, 14 Mar

KLM flights from Seattle to Perth

Our best KLM deals on Seattle to Perth flight tickets

KLM

7 Apr

SEA13:30Seattle/Tacoma Intl

44h 10m

2 stops

PER00:40Perth

28 Apr

PER21:00Perth

53h 45m

3 stops

SEA11:45Seattle/Tacoma Intl

$3,479

KLM

7 Apr

SEA13:45Seattle/Tacoma Intl

44h 30m

3 stops

PER01:15Perth

28 Apr

PER21:00Perth

53h 45m

3 stops

SEA11:45Seattle/Tacoma Intl

$3,924

Cathay Pacific flights from Seattle to Perth

Our best Cathay Pacific deals on Seattle to Perth flight tickets

Cathay Pacific

7 Apr

SEA11:45Seattle/Tacoma Intl

43h 55m

1 stop

PER22:40Perth

28 Apr

PER08:20Perth

40h 45m

1 stop

SEA10:05Seattle/Tacoma Intl

$1,420

Cathay Pacific

7 Apr

SEA11:45Seattle/Tacoma Intl

28h 05m

1 stop

PER06:50Perth

27 Apr

PER00:10Perth

30h 40m

2 stops

SEA15:50Seattle/Tacoma Intl

$1,540

Cathay Pacific

5 Apr

SEA08:41Seattle/Tacoma Intl

55h 09m

2 stops

PER06:50Perth

19 Apr

PER08:20Perth

40h 45m

1 stop

SEA10:05Seattle/Tacoma Intl

$1,545

Fly from

Fly to

Route

Depart

Return

Price

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Tue 7/4

11:45-22:40

1 stop43h 55m

Perth

Tue 28/4

08:20-10:05

1 stop40h 45m

$1,420

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Tue 7/4

11:45-06:50

1 stop28h 05m

Perth

Mon 27/4

00:10-15:50

2 stops30h 40m

$1,540

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Sun 5/4

08:41-06:50

2 stops55h 09m

Perth

Sun 19/4

08:20-10:05

1 stop40h 45m

$1,545

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Wed 1/4

18:59-06:50

2 stops44h 51m

Perth

Tue 14/4

00:10-10:05

1 stop24h 55m

$1,551

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Wed 1/4

11:45-22:40

1 stop43h 55m

Perth

Tue 14/4

00:10-10:05

1 stop24h 55m

$1,632

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Tue 7/4

08:41-06:50

2 stops31h 09m

Perth

Mon 27/4

00:10-15:50

2 stops30h 40m

$1,663

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Tue 7/4

08:41-06:50

2 stops31h 09m

Perth

Tue 28/4

08:20-19:02

2 stops49h 42m

$1,669

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Wed 1/4

18:59-06:50

2 stops44h 51m

Perth

Tue 14/4

00:10-15:42

2 stops30h 32m

$1,672

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Sun 5/4

08:41-06:50

2 stops55h 09m

Perth

Sun 19/4

08:20-08:47

2 stops39h 27m

$1,685

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Sun 1/3

08:45-04:15

1 stop27h 30m

Perth

Sat 14/3

07:35-19:10

2 stops26h 35m

$1,714

Flights are sorted by cheapest return flights first.

Showing 1-10 of 13 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

What is the cheapest month to fly to Perth?

The month of February is, on average, the cheapest month to fly to Perth from Seattle, with most prices found around $1,810. If you’re not able to fly to Perth in February, then September is your next best option. Flight prices from Seattle to Perth during September average around $1,856.

Can stopping save me money on Seattle to Perth flights?

You could potentially save up to 6% 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 return 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	28h 05m
Direct flights	None

The fastest flight from Seattle to Perth takes 28h 05m

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

Search flight deals

How far is Seattle/Tacoma Intl to Perth by plane?
A flight from Seattle/Tacoma Intl to Perth will travel around 14868.9 km. Flights usually cover this in 28h 05m, depending on flying conditions and air traffic around both airports.
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 refresh daily.
How old do you have to be to fly from Seattle/Tacoma Intl Airport to Perth Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and stopovers. 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 necessary travel and health documents for your Perth Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's licence and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Fremantle

Mandurah

Scarborough

Rottnest Island

Why use momondo?

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

Finding the right flight to Perth from Seattle is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Perth quick and easy, saving you time and money.

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

Yes. momondo enables you to select and highlight flights to Perth from Seattle with this policy.

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

momondo helps you find the best flight between Seattle and Perth by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

If you are simply researching potential flights to Perth, momondo offers a useful price alert feature which will track prices for flights to Perth from Seattle and alert you when they change.