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 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 connection time from Seattle to Perth?

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

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

Philippine Airlines and Cathay Pacific are the most popular carriers operating from Seattle/Tacoma Intl to Perth

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.

$530 Cheap Flights from Seattle to Perth in 2026

Find the cheapest flights from Seattle to Perth

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

12:50 pm - 8:55 amSEA Seattle/Tacoma Intl-PER Perth

29h 05m2 stops Incheon Intl Ho Chi Minh City

5:30 pm - 10:00 amPER Perth-SEA Seattle/Tacoma Intl

55h 30m2 stops Ho Chi Minh City Incheon Intl

$1,108Multiple Airlines

Thu, Oct 22 - Fri, Oct 30

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

$1,192Cathay Pacific

Tue, Sep 8 - Wed, Sep 30

11:45 am - 6:50 amSEA Seattle/Tacoma Intl-PER Perth

28h 05m1 stop Hong Kong Intl

12:25 am - 9:10 amPER Perth-SEA Seattle/Tacoma Intl

24h 45m1 stop Hong Kong Intl

$1,192Cathay Pacific

Tue, Oct 20 - Mon, Nov 9

11:50 am - 10:55 pmSEA Seattle/Tacoma Intl-PER Perth

44h 05m1 stop Hong Kong Intl

12:25 am - 9:10 amPER Perth-SEA Seattle/Tacoma Intl

24h 45m1 stop Hong Kong Intl

$1,202Cathay Pacific

Mon, Oct 26 - Mon, Nov 2

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

35h 50m1 stop Singapore Changi

1:20 am - 7:10 amPER Perth-SEA Seattle/Tacoma Intl

21h 50m1 stop Singapore Changi

$1,311Singapore Airlines

Sun, Dec 27 - Mon, Jan 25

4:25 pm - 6:45 pmSEA Seattle/Tacoma Intl-PER Perth

35h 20m1 stop Doha Hamad Intl

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

28h 55m1 stop Doha Hamad Intl

$1,334Qatar Airways

Fri, Oct 23 - Mon, Nov 23

4:25 pm - 6:35 pmSEA Seattle/Tacoma Intl-PER Perth

35h 10m1 stop Doha Hamad Intl

10:45 pm - 12:45 pmPER Perth-SEA Seattle/Tacoma Intl

29h 00m1 stop Doha Hamad Intl

$1,354Qatar Airways

Fri, Sep 4 - Mon, Sep 14

4:25 pm - 6:45 pmSEA Seattle/Tacoma Intl-PER Perth

35h 20m1 stop Doha Hamad Intl

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

28h 55m1 stop Doha Hamad Intl

$1,359Qatar Airways

Fri, Oct 23 - Wed, Nov 25

10:15 am - 11:55 pmSEA Seattle/Tacoma Intl-PER Perth

22h 40m1 stop Singapore Changi

1:50 pm - 8:05 amPER Perth-SEA Seattle/Tacoma Intl

33h 15m1 stop Singapore Changi

$1,370Singapore Airlines

Thu, Oct 22 - Fri, Oct 30

10:15 am - 11:55 pmSEA Seattle/Tacoma Intl-PER Perth

22h 40m1 stop Singapore Changi

1:50 pm - 8:05 amPER Perth-SEA Seattle/Tacoma Intl

33h 15m1 stop Singapore Changi

$1,378Singapore Airlines

Thu, Oct 22 - Fri, Oct 30

Cheap last minute 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 - 10:20 amPER Perth-SEA Seattle/Tacoma Intl

41h 00m1 stop Hong Kong Intl

$1,180Cathay Pacific

Mon, Aug 24 - Sun, Sep 6

1:55 am - 5:10 pmSEA Seattle/Tacoma Intl-PER Perth

48h 15m2 stops Taipei City Taiwan Taoyuan Intl Singapore Changi

9:10 pm - 7:45 pmPER Perth-SEA Seattle/Tacoma Intl

37h 35m2 stops Singapore Changi Taipei City Taiwan Taoyuan Intl

$1,184Multiple Airlines

Sun, Aug 23 - Sun, Sep 6

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

27h 25m1 stop Hong Kong Intl

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

41h 00m1 stop Hong Kong Intl

$1,192Cathay Pacific

Mon, Aug 24 - Sun, Sep 6

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

27h 25m1 stop Hong Kong Intl

8:20 am - 9:08 amPER Perth-SEA Seattle/Tacoma Intl

39h 48m2 stops Hong Kong Intl San Francisco

$1,252Cathay Pacific

Mon, Aug 24 - Sun, Sep 6

8:40 am - 6:50 amSEA Seattle/Tacoma Intl-PER Perth

31h 10m2 stops San Francisco Hong Kong Intl

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

41h 00m1 stop Hong Kong Intl

$1,257Multiple Airlines

Mon, Aug 24 - Sun, Sep 6

7:18 am - 6:50 amSEA Seattle/Tacoma Intl-PER Perth

32h 32m2 stops San Francisco Hong Kong Intl

12:10 am - 9:08 amPER Perth-SEA Seattle/Tacoma Intl

47h 58m2 stops Hong Kong Intl San Francisco

$1,349Multiple Airlines

Mon, Aug 24 - Sat, Sep 5

8:40 am - 5:10 pmSEA Seattle/Tacoma Intl-PER Perth

41h 30m3 stops San Francisco Taipei City Taiwan Taoyuan Intl Singapore Changi

9:10 pm - 7:40 pmPER Perth-SEA Seattle/Tacoma Intl

37h 30m2 stops Singapore Changi Taipei City Taiwan Taoyuan Intl

$1,412Multiple Airlines

Mon, Aug 24 - Sun, Sep 6

8:40 am - 5:10 pmSEA Seattle/Tacoma Intl-PER Perth

41h 30m3 stops San Francisco Taipei City Taiwan Taoyuan Intl Singapore Changi

9:10 pm - 8:32 pmPER Perth-SEA Seattle/Tacoma Intl

38h 22m3 stops Singapore Changi Taipei City Taiwan Taoyuan Intl San Francisco

$1,692Multiple Airlines

Mon, Aug 24 - Sun, Sep 6

5:45 pm - 10:45 amSEA Seattle/Tacoma Intl-PER Perth

50h 00m3 stops Amsterdam Schiphol Singapore Changi Denpasar Bali Ngurah Rai

12:15 pm - 11:47 amPER Perth-SEA Seattle/Tacoma Intl

38h 32m2 stops Singapore Changi Amsterdam Schiphol

$3,734KLM

Mon, Aug 24 - Sun, Sep 6

1:50 pm - 10:45 amSEA Seattle/Tacoma Intl-PER Perth

53h 55m3 stops Amsterdam Schiphol Singapore Changi Denpasar Bali Ngurah Rai

6:50 am - 11:47 amPER Perth-SEA Seattle/Tacoma Intl

43h 57m3 stops Denpasar Bali Ngurah Rai Singapore Changi Amsterdam Schiphol

$3,969KLM

Mon, Aug 24 - Sun, Sep 6

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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 6

PER8:20 amPerth

41h 00m

1 stop

SEA10:20 amSeattle/Tacoma Intl

$1,180

Cathay Pacific

Sep 8

SEA12:25 pmSeattle/Tacoma Intl

27h 25m

1 stop

PER6:50 amPerth

Sep 30

PER8:20 amPerth

40h 45m

1 stop

SEA10:05 amSeattle/Tacoma Intl

$1,192

Cathay Pacific

Oct 26

SEA11:50 amSeattle/Tacoma Intl

44h 05m

1 stop

PER10:55 pmPerth

Nov 2

PER12:25 amPerth

24h 45m

1 stop

SEA9:10 amSeattle/Tacoma Intl

$1,202

Qatar Airways flights from Seattle to Perth

Our best Qatar Airways deals on Seattle to Perth flight tickets

Qatar Airways

Oct 23

SEA4:25 pmSeattle/Tacoma Intl

35h 20m

1 stop

PER6:45 pmPerth

Nov 23

PER10:45 pmPerth

28h 55m

1 stop

SEA11:40 amSeattle/Tacoma Intl

$1,334

Qatar Airways

Sep 4

SEA4:25 pmSeattle/Tacoma Intl

35h 10m

1 stop

PER6:35 pmPerth

Sep 7

PER10:45 pmPerth

29h 00m

1 stop

SEA12:45 pmSeattle/Tacoma Intl

$1,886

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattlePerth

SEA Seattle/Tacoma Intl - PER Perth

SEAPER

Seattle/Tacoma Intl

Thu 10/22

12:50 pm-8:55 am

2 stops29h 05m

Perth

Fri 10/30

5:30 pm-10:00 am

2 stops55h 30m

$1,108

SeattlePerth

SEA Seattle/Tacoma Intl - PER Perth

SEAPER

Seattle/Tacoma Intl

Tue 9/8

12:25 pm-6:50 am

1 stop27h 25m

Perth

Wed 9/30

8:20 am-10:05 am

1 stop40h 45m

$1,192

Quickest round-trip

SeattlePerth

SEA Seattle/Tacoma Intl - PER Perth

SEAPER

Seattle/Tacoma Intl

Tue 10/20

11:45 am-6:50 am

1 stop28h 05m

Perth

Mon 11/9

12:25 am-9:10 am

1 stop24h 45m

$1,192

SeattlePerth

SEA Seattle/Tacoma Intl - PER Perth

SEAPER

Seattle/Tacoma Intl

Mon 10/26

11:50 am-10:55 pm

1 stop44h 05m

Perth

Mon 11/2

12:25 am-9:10 am

1 stop24h 45m

$1,202

SeattlePerth

SEA Seattle/Tacoma Intl - PER Perth

SEAPER

Seattle/Tacoma Intl

Sun 12/27

8:45 am-12:35 pm

1 stop35h 50m

Perth

Mon 1/25

1:20 am-7:10 am

1 stop21h 50m

$1,311

SeattlePerth

SEA Seattle/Tacoma Intl - PER Perth

SEAPER

Seattle/Tacoma Intl

Fri 10/23

4:25 pm-6:45 pm

1 stop35h 20m

Perth

Mon 11/23

10:45 pm-11:40 am

1 stop28h 55m

$1,334

SeattlePerth

SEA Seattle/Tacoma Intl - PER Perth

SEAPER

Seattle/Tacoma Intl

Fri 9/4

4:25 pm-6:35 pm

1 stop35h 10m

Perth

Mon 9/14

10:45 pm-12:45 pm

1 stop29h 00m

$1,354

SeattlePerth

SEA Seattle/Tacoma Intl - PER Perth

SEAPER

Seattle/Tacoma Intl

Fri 10/23

4:25 pm-6:45 pm

1 stop35h 20m

Perth

Wed 11/25

10:45 pm-11:40 am

1 stop28h 55m

$1,359

SeattlePerth

SEA Seattle/Tacoma Intl - PER Perth

SEAPER

Seattle/Tacoma Intl

Thu 10/22

10:15 am-11:55 pm

1 stop22h 40m

Perth

Fri 10/30

1:50 pm-8:05 am

1 stop33h 15m

$1,370

SeattlePerth

SEA Seattle/Tacoma Intl - PER Perth

SEAPER

Seattle/Tacoma Intl

Thu 10/22

10:15 am-11:55 pm

1 stop22h 40m

Perth

Fri 10/30

1:50 pm-8:05 am

1 stop33h 15m

$1,378

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 4% 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

Best Price Found	$530
Fastest flight time	27h 15m
Direct flights	None

The best one-way flight to Perth from Seattle in the past 72 hours is $530. The best round-trip flight deal from Seattle to Perth found on momondo in the last 72 hours is $1,108.

The fastest flight from Seattle to Perth takes 27h 15m

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

Search flight deals

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 15m 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 (76% of total bookings). The next most popular airline is Qatar Airways (24%).

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 1,585 reviews		Search Singapore Airlines flights
Qatar Airways	PriceFrom $1,240	Free Cancellation	Rating 7.4 3,735 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.