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.

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

Cathay Pacific is the most popular carrier 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.

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.

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 1 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.

$1,242 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.

4:25 pm - 8:25 pm

SEA

PER

37h 00m

2 stops

10:45 pm - 12:45 pm

PER

SEA

29h 00m

1 stop

$1,242Qatar Airways

Tue, Sep 8 - Tue, Sep 15

1:55 am - 4:20 am

SEA

PER

35h 25m

2 stops

5:35 am - 7:45 pm

PER

SEA

29h 10m

2 stops

$1,245Multiple Airlines

Mon, Sep 7 - Tue, Sep 15

1:55 am - 4:20 am

SEA

PER

35h 25m

2 stops

5:35 am - 7:45 pm

PER

SEA

29h 10m

2 stops

$1,246Multiple Airlines

Mon, Sep 7 - Tue, Sep 15

1:55 am - 4:20 am

SEA

PER

35h 25m

2 stops

5:35 am - 7:45 pm

PER

SEA

29h 10m

2 stops

$1,250Multiple Airlines

Mon, Sep 7 - Tue, Sep 15

4:40 pm - 11:45 pm

SEA

PER

40h 05m

2 stops

9:10 pm - 7:10 am

PER

SEA

26h 00m

1 stop

$1,254Multiple Airlines

Thu, Oct 29 - Mon, Nov 16

4:30 pm - 3:45 am

SEA

PER

44h 15m

2 stops

9:10 pm - 7:10 am

PER

SEA

26h 00m

1 stop

$1,256Multiple Airlines

Tue, Sep 8 - Tue, Nov 3

4:40 pm - 7:55 pm

SEA

PER

36h 15m

2 stops

9:10 pm - 7:10 am

PER

SEA

26h 00m

1 stop

$1,259Multiple Airlines

Fri, Oct 30 - Mon, Nov 16

3:40 pm - 11:45 pm

SEA

PER

40h 05m

2 stops

9:10 pm - 7:10 am

PER

SEA

26h 00m

1 stop

$1,261Multiple Airlines

Sun, Nov 1 - Mon, Nov 16

8:45 am - 12:35 pm

SEA

PER

35h 50m

1 stop

6:40 am - 7:10 am

PER

SEA

40h 30m

1 stop

$1,311Singapore Airlines

Sun, Nov 1 - Tue, Nov 17

10:15 am - 11:55 pm

SEA

PER

22h 40m

1 stop

1:15 am - 7:10 am

PER

SEA

21h 55m

1 stop

$1,364Singapore Airlines

Tue, Sep 8 - Mon, Nov 2

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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 31

SEA12:25 pmSeattle/Tacoma Intl

27h 25m

1 stop

PER6:50 amPerth

Sep 13

PER8:20 amPerth

41h 00m

1 stop

SEA10:20 amSeattle/Tacoma Intl

$1,274

Cathay Pacific

Sep 8

SEA12:25 pmSeattle/Tacoma Intl

27h 25m

1 stop

PER6:50 amPerth

Sep 14

PER12:10 amPerth

25h 10m

1 stop

SEA10:20 amSeattle/Tacoma Intl

$1,309

Cathay Pacific

Nov 2

SEA10:50 amSeattle/Tacoma Intl

44h 05m

1 stop

PER10:55 pmPerth

Nov 18

PER8:30 amPerth

40h 40m

1 stop

SEA9:10 amSeattle/Tacoma Intl

$1,315

Qatar Airways flights from Seattle to Perth

Our best Qatar Airways deals on Seattle to Perth flight tickets

Qatar Airways

Sep 8

SEA4:25 pmSeattle/Tacoma Intl

37h 00m

2 stops

PER8:25 pmPerth

Sep 15

PER10:45 pmPerth

29h 00m

1 stop

SEA12:45 pmSeattle/Tacoma Intl

$1,242

Qatar Airways

Aug 17

SEA4:25 pmSeattle/Tacoma Intl

35h 10m

1 stop

PER6:35 pmPerth

Sep 14

PER10:45 pmPerth

29h 00m

1 stop

SEA12:45 pmSeattle/Tacoma Intl

$1,270

Qatar Airways

Aug 17

SEA4:25 pmSeattle/Tacoma Intl

35h 10m

1 stop

PER6:35 pmPerth

Sep 14

PER10:45 pmPerth

29h 00m

1 stop

SEA12:45 pmSeattle/Tacoma Intl

$1,271

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Tue 9/8

4:25 pm-8:25 pm

2 stops37h 00m

Perth

Tue 9/15

10:45 pm-12:45 pm

1 stop29h 00m

$1,242

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Mon 9/7

1:55 am-4:20 am

2 stops35h 25m

Perth

Tue 9/15

5:35 am-7:45 pm

2 stops29h 10m

$1,245

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Mon 9/7

1:55 am-4:20 am

2 stops35h 25m

Perth

Tue 9/15

5:35 am-7:45 pm

2 stops29h 10m

$1,246

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Mon 9/7

1:55 am-4:20 am

2 stops35h 25m

Perth

Tue 9/15

5:35 am-7:45 pm

2 stops29h 10m

$1,250

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Thu 10/29

4:40 pm-11:45 pm

2 stops40h 05m

Perth

Mon 11/16

9:10 pm-7:10 am

1 stop26h 00m

$1,254

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Tue 9/8

4:30 pm-3:45 am

2 stops44h 15m

Perth

Tue 11/3

9:10 pm-7:10 am

1 stop26h 00m

$1,256

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Fri 10/30

4:40 pm-7:55 pm

2 stops36h 15m

Perth

Mon 11/16

9:10 pm-7:10 am

1 stop26h 00m

$1,259

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Sun 11/1

3:40 pm-11:45 pm

2 stops40h 05m

Perth

Mon 11/16

9:10 pm-7:10 am

1 stop26h 00m

$1,261

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Sun 11/1

8:45 am-12:35 pm

1 stop35h 50m

Perth

Tue 11/17

6:40 am-7:10 am

1 stop40h 30m

$1,311

Quickest round-trip

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Tue 9/8

10:15 am-11:55 pm

1 stop22h 40m

Perth

Mon 11/2

1:15 am-7:10 am

1 stop21h 55m

$1,364

Flights are sorted by cheapest round-trip 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

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 1 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 (100% of total bookings).

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 $1,172	Free Cancellation	Rating 8.2 1,584 reviews		Search Singapore Airlines 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.