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

Philippine Airlines and Singapore Airlines are the most popular carriers 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 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 May 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.

$604 Cheap Flights from Seattle to Perth in 2026

Q: What is the typical price of a round-trip flight between Seattle and Perth?

Prices are currently low for flights on this route. Typical prices usually range from $1,667 to $1,425. The lowest price recently found on this route was $1,250.

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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 - 6:35 pm

SEA

PER

35h 10m

1 stop

10:45 pm - 12:25 pm

PER

SEA

28h 40m

1 stop

$1,250Qatar Airways

Wed, Sep 30 - Wed, Oct 7

4:25 pm - 6:35 pm

SEA

PER

35h 10m

1 stop

10:45 pm - 12:25 pm

PER

SEA

28h 40m

1 stop

$1,255Qatar Airways

Mon, Aug 17 - Mon, Sep 14

4:25 pm - 6:35 pm

SEA

PER

35h 10m

1 stop

10:45 pm - 8:32 pm

PER

SEA

36h 47m

2 stops

$1,268Multiple Airlines

Mon, Aug 17 - Mon, Sep 14

10:15 am - 5:10 am

SEA

PER

27h 55m

1 stop

1:45 pm - 8:45 am

PER

SEA

34h 00m

1 stop

$1,271Singapore Airlines

Thu, Sep 3 - Sat, Oct 3

4:05 pm - 6:45 pm

SEA

PER

34h 40m

1 stop

10:45 pm - 11:40 am

PER

SEA

28h 55m

1 stop

$1,291Qatar Airways

Sun, Nov 1 - Sun, Nov 15

4:05 pm - 6:45 pm

SEA

PER

34h 40m

1 stop

10:45 pm - 6:56 pm

PER

SEA

36h 11m

2 stops

$1,308Multiple Airlines

Sun, Nov 1 - Sun, Nov 15

4:05 pm - 6:45 pm

SEA

PER

34h 40m

1 stop

10:45 pm - 11:40 am

PER

SEA

28h 55m

1 stop

$1,338Qatar Airways

Sun, Nov 1 - Thu, Nov 5

4:05 pm - 6:45 pm

SEA

PER

34h 40m

1 stop

10:45 pm - 11:40 am

PER

SEA

28h 55m

1 stop

$1,339Qatar Airways

Sun, Nov 1 - Thu, Nov 5

9:40 pm - 6:45 pm

SEA

PER

53h 05m

2 stops

10:45 pm - 4:56 pm

PER

SEA

34h 11m

2 stops

$1,348Qatar Airways

Sun, Nov 1 - Sun, Nov 15

7:03 am - 5:10 am

SEA

PER

31h 07m

2 stops

4:55 pm - 8:45 am

PER

SEA

30h 50m

1 stop

$1,349Multiple Airlines

Mon, Aug 17 - Mon, Sep 14

Cathay Pacific flights from Seattle to Perth

Our best Cathay Pacific deals on Seattle to Perth flight tickets

Cathay Pacific

Sep 3

SEA6:50 amSeattle/Tacoma Intl

33h 00m

2 stops

PER6:50 amPerth

Oct 3

PER8:20 amPerth

37h 48m

2 stops

SEA7:08 amSeattle/Tacoma Intl

$1,698

Cathay Pacific

Nov 1

SEA5:45 pmSeattle/Tacoma Intl

37h 10m

2 stops

PER10:55 pmPerth

Nov 4

PER12:25 amPerth

48h 27m

2 stops

SEA8:52 amSeattle/Tacoma Intl

$1,833

Singapore Airlines flights from Seattle to Perth

Our best Singapore Airlines deals on Seattle to Perth flight tickets

Singapore Airlines

Sep 3

SEA10:15 amSeattle/Tacoma Intl

27h 55m

1 stop

PER5:10 amPerth

Oct 3

PER1:45 pmPerth

34h 00m

1 stop

SEA8:45 amSeattle/Tacoma Intl

$1,271

Singapore Airlines

Sep 3

SEA10:15 amSeattle/Tacoma Intl

35h 15m

1 stop

PER12:30 pmPerth

Oct 3

PER1:45 pmPerth

34h 00m

1 stop

SEA8:45 amSeattle/Tacoma Intl

$1,284

Singapore Airlines

Sep 3

SEA10:15 amSeattle/Tacoma Intl

35h 15m

1 stop

PER12:30 pmPerth

Oct 3

PER1:45 pmPerth

34h 00m

1 stop

SEA8:45 amSeattle/Tacoma Intl

$1,386

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Wed 9/30

4:25 pm-6:35 pm

1 stop35h 10m

Perth

Wed 10/7

10:45 pm-12:25 pm

1 stop28h 40m

$1,250

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Mon 8/17

4:25 pm-6:35 pm

1 stop35h 10m

Perth

Mon 9/14

10:45 pm-12:25 pm

1 stop28h 40m

$1,255

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Mon 8/17

4:25 pm-6:35 pm

1 stop35h 10m

Perth

Mon 9/14

10:45 pm-8:32 pm

2 stops36h 47m

$1,268

Quickest round-trip

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Thu 9/3

10:15 am-5:10 am

1 stop27h 55m

Perth

Sat 10/3

1:45 pm-8:45 am

1 stop34h 00m

$1,271

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Sun 11/1

4:05 pm-6:45 pm

1 stop34h 40m

Perth

Sun 11/15

10:45 pm-11:40 am

1 stop28h 55m

$1,291

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Sun 11/1

4:05 pm-6:45 pm

1 stop34h 40m

Perth

Sun 11/15

10:45 pm-6:56 pm

2 stops36h 11m

$1,308

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Sun 11/1

4:05 pm-6:45 pm

1 stop34h 40m

Perth

Thu 11/5

10:45 pm-11:40 am

1 stop28h 55m

$1,338

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Sun 11/1

4:05 pm-6:45 pm

1 stop34h 40m

Perth

Thu 11/5

10:45 pm-11:40 am

1 stop28h 55m

$1,339

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Sun 11/1

9:40 pm-6:45 pm

2 stops53h 05m

Perth

Sun 11/15

10:45 pm-4:56 pm

2 stops34h 11m

$1,348

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Mon 8/17

7:03 am-5:10 am

2 stops31h 07m

Perth

Mon 9/14

4:55 pm-8:45 am

1 stop30h 50m

$1,349

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

What is the typical price of a round-trip flight between Seattle and Perth?

What is the cheapest month to fly to Perth?

In general, August 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 $1,232. If you are unable to visit Perth during the month of August, then departing from Seattle during the month February is also very affordable. Most momondo users find prices during this month for around $1,292.

Can stopping save me money on Seattle to Perth flights?

You could potentially save up to 54% 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 50m
Direct flights	None

The fastest flight from Seattle to Perth takes 27h 50m

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 50m 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 May 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 (69% of total bookings). The next most popular airline is Qantas Airways (31%).

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 $1,179	Free Cancellation	Rating 8.2 1,509 reviews		Search Singapore Airlines flights
Qantas Airways	PriceFrom $1,258	Free Cancellation	Rating 7.5 1,033 reviews		Search Qantas Airways flights

Rottnest Island

Mandurah

Fremantle

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.