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Cheap flights from Seattle to Perth from $735

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Perth departing on 8/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Singapore Airlines Logo
08:45 - 12:35SEA-PER
35h 50m1 stop
Singapore Airlines Logo
17:05 - 08:10PER-SEA
30h 05m1 stop
$1,743Singapore Airlines
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Tue, 17 Feb - Sat, 14 Mar
Singapore Airlines Logo
08:45 - 12:35SEA-PER
35h 50m1 stop
Singapore Airlines Logo
01:15 - 08:10PER-SEA
21h 55m1 stop
$1,760Singapore Airlines
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Tue, 17 Feb - Fri, 13 Mar
Cathay Pacific Logo
11:50 - 07:45SEA-PER
28h 55m1 stop
Cathay Pacific Logo
09:15 - 10:10PER-SEA
39h 55m1 stop
$1,799Cathay Pacific
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Mon, 20 Apr - Mon, 4 May
Cathay Pacific Logo
11:50 - 22:40SEA-PER
43h 50m1 stop
Cathay Pacific Logo
00:10 - 10:10PER-SEA
25h 00m1 stop
$1,828Cathay Pacific
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Mon, 20 Apr - Sun, 3 May
Multiple Airlines Logo
21:30 - 04:15SEA-PER
38h 45m2 stops
Multiple Airlines Logo
05:35 - 18:40PER-SEA
29h 05m2 stops
$1,848Multiple Airlines
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Wed, 12 Nov - Tue, 2 Dec
Qantas Airways Logo
16:59 - 12:25SEA-PER
27h 26m2 stops
Qantas Airways Logo
08:00 - 17:28PER-SEA
25h 28m2 stops
$1,896Qantas Airways
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Sat, 6 Dec - Sat, 13 Dec
Multiple Airlines Logo
08:45 - 12:35SEA-PER
35h 50m1 stop
Multiple Airlines Logo
01:15 - 13:52PER-SEA
27h 37m2 stops
$1,902Multiple Airlines
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Tue, 17 Feb - Fri, 13 Mar
Qantas Airways Logo
15:35 - 12:25SEA-PER
28h 50m2 stops
Qantas Airways Logo
08:00 - 18:49PER-SEA
25h 49m2 stops
$2,016Qantas Airways
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Tue, 17 Feb - Sat, 14 Mar
Qatar Airways Logo
08:05 - 11:55SEA-PER
35h 50m2 stops
Qatar Airways Logo
15:55 - 12:40PER-SEA
35h 45m1 stop
$2,101Qatar Airways
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Tue, 17 Feb - Sat, 14 Mar
Qatar Airways Logo
16:30 - 11:55SEA-PER
28h 25m1 stop
Qatar Airways Logo
15:40 - 12:45PER-SEA
36h 05m1 stop
$2,171Qatar Airways
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Sun, 19 Apr - Thu, 23 Apr

Qatar Airways flights from Seattle to Perth

Our best Qatar Airways deals on Seattle to Perth flight tickets
Qatar Airways
17 Feb
SEA08:05Seattle/Tacoma Intl
35h 50m
2 stops
PER11:55Perth
14 Mar
PER15:55Perth
35h 45m
1 stop
SEA12:40Seattle/Tacoma Intl
$2,101
Find similar
Qatar Airways
19 Apr
SEA16:30Seattle/Tacoma Intl
28h 25m
1 stop
PER11:55Perth
23 Apr
PER15:40Perth
36h 05m
1 stop
SEA12:45Seattle/Tacoma Intl
$2,171
Find similar
Qatar Airways
19 Apr
SEA16:30Seattle/Tacoma Intl
35h 10m
1 stop
PER18:40Perth
23 Apr
PER15:40Perth
36h 05m
1 stop
SEA12:45Seattle/Tacoma Intl
$2,178
Find similar

Cathay Pacific flights from Seattle to Perth

Our best Cathay Pacific deals on Seattle to Perth flight tickets
Cathay Pacific
20 Apr
SEA11:50Seattle/Tacoma Intl
28h 55m
1 stop
PER07:45Perth
4 May
PER09:15Perth
39h 55m
1 stop
SEA10:10Seattle/Tacoma Intl
$1,799
Find similar
Cathay Pacific
20 Apr
SEA11:50Seattle/Tacoma Intl
43h 50m
1 stop
PER22:40Perth
3 May
PER00:10Perth
25h 00m
1 stop
SEA10:10Seattle/Tacoma Intl
$1,828
Find similar
Cathay Pacific
20 Apr
SEA11:50Seattle/Tacoma Intl
28h 55m
1 stop
PER07:45Perth
3 May
PER00:10Perth
33h 30m
2 stops
SEA18:40Seattle/Tacoma Intl
$1,863
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momondo Fare Finder

 
Customise your flight search to find flights from Seattle to Perth that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 78,305 searches. Data last updated 23 October 2025.
Use the filters below to find and compare flights from Seattle to Perth that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Tue 17/2

08:45-12:35

1 stop35h 50m

Perth

Sat 14/3

17:05-08:10

1 stop30h 05m

$1,743

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Tue 17/2

08:45-12:35

1 stop35h 50m

Perth

Fri 13/3

01:15-08:10

1 stop21h 55m

$1,760

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Mon 20/4

11:50-07:45

1 stop28h 55m

Perth

Mon 4/5

09:15-10:10

1 stop39h 55m

$1,799

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Mon 20/4

11:50-22:40

1 stop43h 50m

Perth

Sun 3/5

00:10-10:10

1 stop25h 00m

$1,828

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Wed 12/11

21:30-04:15

2 stops38h 45m

Perth

Tue 2/12

05:35-18:40

2 stops29h 05m

$1,848

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Sat 6/12

16:59-12:25

2 stops27h 26m

Perth

Sat 13/12

08:00-17:28

2 stops25h 28m

$1,896

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Tue 17/2

08:45-12:35

1 stop35h 50m

Perth

Fri 13/3

01:15-13:52

2 stops27h 37m

$1,902

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Tue 17/2

15:35-12:25

2 stops28h 50m

Perth

Sat 14/3

08:00-18:49

2 stops25h 49m

$2,016

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Tue 17/2

08:05-11:55

2 stops35h 50m

Perth

Sat 14/3

15:55-12:40

1 stop35h 45m

$2,101

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Sun 19/4

16:30-11:55

1 stop28h 25m

Perth

Thu 23/4

15:40-12:45

1 stop36h 05m

$2,171

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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?

The month of September is, on average, the cheapest month to fly to Perth from Seattle, with most prices found around $1,987. If you’re not able to fly to Perth in September, then February is your next best option. Flight prices from Seattle to Perth during February average around $2,025.

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?

As of October 2025, prices for Seattle to Perth flights are approximately 46% cheaper when compared to flights at the same time last year.

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

Direct flights

None
There are no direct flights from Seattle to Perth. There are no popular flight routes from Seattle to Perth.
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  • 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 27h 26m, 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.

Travelling to a place near Perth?

Book flights to Perth if you plan to visit one of these locations
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.

An easier way to manage your Perth trip

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