What airlines fly to Perth?

Singapore Airlines, Qatar Airways and Qantas Airways are the top three most popular airlines that fly to Perth from Seattle according to our data. Singapore Airlines is the first choice among our users, with 63% of people opting to fly with this airline when traveling to Perth. Keep in mind that there are 3 different airlines that fly to Perth on a routine basis, so you have a few additional options to choose from.

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

Flights via Singapore (SIN) offer the lowest average round-trip price of $1,290.

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

Singapore (SIN) 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: 25h 18m.

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

Doha (DOH) has the shortest average layover time for this route: 5h 55m.

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 3 as of November 2025.

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.

$1,089 Cheap Flights from Seattle to Perth in 2025/26

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

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.

2:50 pm - 9:00 pmSEA-PER

38h 10m2 stops

10:45 pm - 12:29 pmPER-SEA

29h 44m2 stops

$1,643Qantas Airways

Find Deal

Thu, Dec 25 - Fri, Jan 9

2:50 pm - 9:00 pmSEA-PER

38h 10m2 stops

10:45 pm - 5:52 pmPER-SEA

35h 07m2 stops

$1,680Qantas Airways

Find Deal

Thu, Dec 25 - Sun, Jan 11

6:25 am - 6:55 amSEA-PER

32h 30m2 stops

12:25 am - 10:25 pmPER-SEA

38h 00m2 stops

$1,767Cathay Pacific

Find Deal

Fri, Dec 5 - Thu, Dec 11

6:00 am - 9:00 pmSEA-PER

47h 00m2 stops

10:45 pm - 5:52 pmPER-SEA

35h 07m2 stops

$1,840Qantas Airways

Find Deal

Tue, Dec 23 - Mon, Jan 12

7:55 pm - 6:55 amSEA-PER

43h 00m2 stops

12:25 am - 6:49 pmPER-SEA

34h 24m2 stops

$1,954Cathay Pacific

Find Deal

Wed, Dec 24 - Sun, Jan 11

6:00 am - 9:15 pmSEA-PER

47h 15m2 stops

10:45 pm - 12:29 pmPER-SEA

29h 44m2 stops

$2,041Qantas Airways

Find Deal

Fri, Dec 26 - Sun, Jan 11

7:54 pm - 10:55 pmSEA-PER

59h 01m2 stops

10:30 am - 9:55 amPER-SEA

39h 25m2 stops

$2,122Multiple Airlines

Find Deal

Sun, Dec 14 - Sun, Jan 4

7:54 pm - 10:55 pmSEA-PER

59h 01m2 stops

10:30 am - 9:55 amPER-SEA

39h 25m2 stops

$2,126Multiple Airlines

Find Deal

Sun, Dec 14 - Sun, Jan 4

6:00 am - 11:30 amSEA-PER

61h 30m2 stops

5:00 pm - 12:29 pmPER-SEA

35h 29m2 stops

$2,182Qantas Airways

Find Deal

Sat, Dec 27 - Mon, Jan 12

7:55 pm - 6:55 amSEA-PER

43h 00m2 stops

12:25 am - 2:34 pmPER-SEA

30h 09m2 stops

$2,193Cathay Pacific

Find Deal

Wed, Dec 24 - Wed, Jan 7

Qantas Airways flights from Seattle to Perth

Our best Qantas Airways deals on Seattle to Perth flight tickets

Qantas Airways

Dec 25

SEA2:50 pmSeattle/Tacoma Intl

38h 10m

2 stops

PER9:00 pmPerth

Jan 9

PER10:45 pmPerth

29h 44m

2 stops

SEA12:29 pmSeattle/Tacoma Intl

$1,643

Find similar

Qantas Airways

Dec 25

SEA2:50 pmSeattle/Tacoma Intl

38h 10m

2 stops

PER9:00 pmPerth

Jan 11

PER10:45 pmPerth

35h 07m

2 stops

SEA5:52 pmSeattle/Tacoma Intl

$1,680

Find similar

Qantas Airways

Dec 23

SEA6:00 amSeattle/Tacoma Intl

47h 00m

2 stops

PER9:00 pmPerth

Jan 12

PER10:45 pmPerth

35h 07m

2 stops

SEA5:52 pmSeattle/Tacoma Intl

$1,840

Find similar

Qatar Airways flights from Seattle to Perth

Our best Qatar Airways deals on Seattle to Perth flight tickets

Qatar Airways

Feb 19

SEA8:15 amSeattle/Tacoma Intl

35h 40m

2 stops

PER11:55 amPerth

Mar 11

PER10:45 pmPerth

28h 55m

1 stop

SEA12:40 pmSeattle/Tacoma Intl

$1,330

Find similar

Qatar Airways

Mar 14

SEA8:15 amSeattle/Tacoma Intl

36h 40m

2 stops

PER11:55 amPerth

Mar 20

PER10:45 pmPerth

28h 55m

1 stop

SEA12:40 pmSeattle/Tacoma Intl

$1,369

Find similar

Qatar Airways

Apr 19

SEA4:30 pmSeattle/Tacoma Intl

35h 10m

1 stop

PER6:40 pmPerth

Apr 23

PER10:45 pmPerth

29h 00m

1 stop

SEA12:45 pmSeattle/Tacoma Intl

$1,414

Find similar

Fly from

Fly to

Route

Depart

Return

Price

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Thu 12/25

2:50 pm-9:00 pm

2 stops38h 10m

Perth

Fri 1/9

10:45 pm-12:29 pm

2 stops29h 44m

$1,643

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Thu 12/25

2:50 pm-9:00 pm

2 stops38h 10m

Perth

Sun 1/11

10:45 pm-5:52 pm

2 stops35h 07m

$1,680

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Fri 12/5

6:25 am-6:55 am

2 stops32h 30m

Perth

Thu 12/11

12:25 am-10:25 pm

2 stops38h 00m

$1,767

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Tue 12/23

6:00 am-9:00 pm

2 stops47h 00m

Perth

Mon 1/12

10:45 pm-5:52 pm

2 stops35h 07m

$1,840

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Wed 12/24

7:55 pm-6:55 am

2 stops43h 00m

Perth

Sun 1/11

12:25 am-6:49 pm

2 stops34h 24m

$1,954

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Fri 12/26

6:00 am-9:15 pm

2 stops47h 15m

Perth

Sun 1/11

10:45 pm-12:29 pm

2 stops29h 44m

$2,041

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Sun 12/14

7:54 pm-10:55 pm

2 stops59h 01m

Perth

Sun 1/4

10:30 am-9:55 am

2 stops39h 25m

$2,122

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Sun 12/14

7:54 pm-10:55 pm

2 stops59h 01m

Perth

Sun 1/4

10:30 am-9:55 am

2 stops39h 25m

$2,126

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Sat 12/27

6:00 am-11:30 am

2 stops61h 30m

Perth

Mon 1/12

5:00 pm-12:29 pm

2 stops35h 29m

$2,182

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Wed 12/24

7:55 pm-6:55 am

2 stops43h 00m

Perth

Wed 1/7

12:25 am-2:34 pm

2 stops30h 09m

$2,193

Flights are sorted by cheapest round-trip flights first.

Sorted 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, September 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 $1,290. If you are unable to visit Perth during the month of September, then departing from Seattle during the month November is also very affordable. Most momondo users find prices during this month for around $1,302.

What is the cheapest day to depart on your flight to Perth?

The cheapest day to depart on your flight to Perth is on a Sunday when prices can be found for as low as $1,482. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to Perth is Friday, with ticket prices averaging around $1,858.

What is the cheapest time of day to depart on your flight to Perth?

In the evening is the cheapest time of day to fly from Seattle to Perth when you can find flight prices for as low as $1,497. Flying to Perth in the evening is an ideal time because this is during off-peak travel hours. Try not to purchase tickets in the morning because they tend to be around $1,690. Of course, these prices can vary depending on the time of year and what airport you fly to.

Can stopping save me money on Seattle to Perth flights?

You could potentially save up to 23% on your flight if you consider stops on a Seattle to Perth flight.

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

Direct flights	None

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?
There are 9239.1 mi between Seattle/Tacoma Intl and Perth. 23h 10m 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 3 as of November 2025.
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 (63% of total bookings). The next most popular airlines are Qatar Airways (21%) and Qantas Airways (16%).

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 $1,239	Free Cancellation	Rating 8.1 1,398 reviews	Search Singapore Airlines flights
Qantas Airways	PriceFrom $1,258	Free Cancellation	Rating 7.5 933 reviews	Search Qantas Airways flights
Qatar Airways	PriceFrom $1,307	Free Cancellation	Rating 7.4 3,660 reviews	Search Qatar Airways flights

Mandurah

Fremantle

Rottnest Island

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.

An easier way to manage your Perth trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Start using Trips

Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

1 adult

Fri 12/12

Fri 12/19

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Australia

Cheap flights from Seattle to Perth from $1,643

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Perth departing on 12/25. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Seattle to Perth

Cheap round-trip flights

Cheap one-way flights

Qantas Airways flights from Seattle to Perth

Our best Qantas Airways deals on Seattle to Perth flight tickets

Qatar Airways flights from Seattle to Perth

Our best Qatar Airways deals on Seattle to Perth flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Seattle to Perth that are best for you.

See travel insights to Perth from

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

What is the cheapest month to fly to Perth?

What is the cheapest day to depart on your flight to Perth?

The cheapest day to depart on your flight to Perth is on a Sunday when prices can be found for as low as $1,482. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to Perth is Friday, with ticket prices averaging around $1,858.

What is the cheapest time of day to depart on your flight to Perth?

Can stopping save me money on Seattle to Perth flights?

You could potentially save up to 23% on your flight if you consider stops on a Seattle to Perth flight.

What airlines fly to Perth?

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

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

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

Flights via Singapore (SIN) offer the lowest average round-trip price of $1,290.

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: 25h 18m.

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

Doha (DOH) has the shortest average layover time for this route: 5h 55m.

When to book flights from Seattle to Perth

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

Direct flights

How far is Seattle/Tacoma Intl to Perth by plane?

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

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

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

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

What is the most popular airline from Seattle to Perth?

Best airlines flying from Seattle to Perth

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

Traveling to a place near Perth?

Why use momondo?

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

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

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

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

An easier way to manage your Perth trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Australia

Airports servicing Western Australia