Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Seattle to Perth from $1,089

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 4/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

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

Trusted and free

Trusted and free

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

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Seattle to Perth

Cheap round-trip flights

Enter your travel dates to find the best prices.
Singapore Airlines Logo
10:15 am - 12:30 pm
SEA
-
PER
35h 15m
1 stop
Singapore Airlines Logo
1:10 am - 8:45 am
PER
-
SEA
22h 35m
1 stop
$1,089Singapore Airlines
Tue, Apr 7 - Mon, Apr 27
Multiple Airlines Logo
8:45 am - 4:30 am
SEA
-
PER
27h 45m
2 stops
Multiple Airlines Logo
8:40 pm - 7:16 pm
PER
-
SEA
38h 36m
3 stops
$1,101Multiple Airlines
Fri, Feb 27 - Fri, Mar 6
Singapore Airlines Logo
10:15 am - 5:10 am
SEA
-
PER
27h 55m
1 stop
Singapore Airlines Logo
1:10 am - 8:45 am
PER
-
SEA
22h 35m
1 stop
$1,128Singapore Airlines
Tue, Apr 7 - Mon, Apr 27
Multiple Airlines Logo
10:15 am - 5:10 am
SEA
-
PER
27h 55m
1 stop
Multiple Airlines Logo
1:10 am - 4:17 pm
PER
-
SEA
30h 07m
2 stops
$1,139Multiple Airlines
Tue, Apr 7 - Mon, Apr 27
Multiple Airlines Logo
8:45 am - 4:15 am
SEA
-
PER
27h 30m
1 stop
Multiple Airlines Logo
6:30 pm - 9:00 am
PER
-
SEA
30h 30m
2 stops
$1,141Multiple Airlines
Fri, Feb 27 - Fri, Mar 6
Multiple Airlines Logo
8:45 am - 4:15 am
SEA
-
PER
27h 30m
1 stop
Multiple Airlines Logo
6:30 pm - 9:00 am
PER
-
SEA
30h 30m
2 stops
$1,151Multiple Airlines
Sat, Feb 28 - Sat, Mar 7
Multiple Airlines Logo
12:10 am - 1:25 pm
SEA
-
PER
45h 15m
2 stops
Multiple Airlines Logo
4:55 am - 6:10 pm
PER
-
SEA
29h 15m
2 stops
$1,156Multiple Airlines
Mon, Feb 2 - Sat, Feb 14
Multiple Airlines Logo
10:15 am - 5:10 am
SEA
-
PER
27h 55m
1 stop
Multiple Airlines Logo
1:10 am - 6:11 pm
PER
-
SEA
32h 01m
2 stops
$1,188Multiple Airlines
Tue, Apr 28 - Mon, May 18
Multiple Airlines Logo
12:10 am - 12:40 am
SEA
-
PER
32h 30m
3 stops
Multiple Airlines Logo
8:40 pm - 10:06 pm
PER
-
SEA
41h 26m
3 stops
$1,193Multiple Airlines
Thu, Feb 26 - Fri, Mar 6
Singapore Airlines Logo
8:45 am - 12:35 pm
SEA
-
PER
35h 50m
1 stop
Singapore Airlines Logo
1:15 am - 8:10 am
PER
-
SEA
21h 55m
1 stop
$1,208Singapore Airlines
Sat, Mar 7 - Fri, Mar 13

United Airlines flights from Seattle to Perth

Our best United Airlines deals on Seattle to Perth flight tickets
United Airlines
Feb 10
SEA5:10 pmSeattle/Tacoma Intl
29h 35m
2 stops
PER2:45 pmPerth
Feb 17
PER10:55 pmPerth
35h 08m
3 stops
SEA6:03 pmSeattle/Tacoma Intl
$1,808
United Airlines
Feb 3
SEA9:25 amSeattle/Tacoma Intl
37h 20m
2 stops
PER2:45 pmPerth
Feb 15
PER11:45 pmPerth
37h 16m
3 stops
SEA9:01 pmSeattle/Tacoma Intl
$1,952
United Airlines
Feb 27
SEA7:00 amSeattle/Tacoma Intl
36h 20m
3 stops
PER11:20 amPerth
Mar 6
PER10:30 pmPerth
28h 54m
2 stops
SEA11:24 amSeattle/Tacoma Intl
$2,062

Cathay Pacific flights from Seattle to Perth

Our best Cathay Pacific deals on Seattle to Perth flight tickets
Cathay Pacific
Apr 7
SEA2:53 pmSeattle/Tacoma Intl
49h 52m
2 stops
PER7:45 amPerth
Apr 27
PER12:10 amPerth
47h 48m
2 stops
SEA8:58 amSeattle/Tacoma Intl
$1,327
Cathay Pacific
Apr 7
SEA6:59 pmSeattle/Tacoma Intl
36h 41m
2 stops
PER10:40 pmPerth
Apr 27
PER12:10 amPerth
45h 54m
2 stops
SEA7:04 amSeattle/Tacoma Intl
$1,346
Cathay Pacific
Feb 10
SEA6:00 amSeattle/Tacoma Intl
48h 55m
2 stops
PER10:55 pmPerth
Feb 16
PER12:25 amPerth
58h 27m
2 stops
SEA6:52 pmSeattle/Tacoma Intl
$1,401

momondo Fare Finder

 
Customize 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 832,500 searches. Data last updated January 14, 2026.
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 4/7

10:15 am-12:30 pm

1 stop35h 15m

Perth

Mon 4/27

1:10 am-8:45 am

1 stop22h 35m

$1,089

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Fri 2/27

8:45 am-4:30 am

2 stops27h 45m

Perth

Fri 3/6

8:40 pm-7:16 pm

3 stops38h 36m

$1,101

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Tue 4/7

10:15 am-5:10 am

1 stop27h 55m

Perth

Mon 4/27

1:10 am-8:45 am

1 stop22h 35m

$1,128

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Tue 4/7

10:15 am-5:10 am

1 stop27h 55m

Perth

Mon 4/27

1:10 am-4:17 pm

2 stops30h 07m

$1,139

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Fri 2/27

8:45 am-4:15 am

1 stop27h 30m

Perth

Fri 3/6

6:30 pm-9:00 am

2 stops30h 30m

$1,141

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Sat 2/28

8:45 am-4:15 am

1 stop27h 30m

Perth

Sat 3/7

6:30 pm-9:00 am

2 stops30h 30m

$1,151

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Mon 2/2

12:10 am-1:25 pm

2 stops45h 15m

Perth

Sat 2/14

4:55 am-6:10 pm

2 stops29h 15m

$1,156

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Tue 4/28

10:15 am-5:10 am

1 stop27h 55m

Perth

Mon 5/18

1:10 am-6:11 pm

2 stops32h 01m

$1,188

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Thu 2/26

12:10 am-12:40 am

3 stops32h 30m

Perth

Fri 3/6

8:40 pm-10:06 pm

3 stops41h 26m

$1,193

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Sat 3/7

8:45 am-12:35 pm

1 stop35h 50m

Perth

Fri 3/13

1:15 am-8:10 am

1 stop21h 55m

$1,208

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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?

In general, February 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 $1,258. If you are unable to visit Perth during the month of February, then departing from Seattle during the month September is also very affordable. Most momondo users find prices during this month for around $1,290.

Can stopping save me money on Seattle to Perth flights?

You could potentially save up to 28% 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 30m

Direct flights

None
The fastest flight from Seattle to Perth takes 27h 30m
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. 27h 30m 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?

  • 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?

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
Qatar AirwaysPriceFrom $928Free CancellationRating
7.4
3,714 reviews
Search Qatar Airways flights
Qantas AirwaysPriceFrom $1,258Free CancellationRating
7.5
970 reviews
Search Qantas Airways flights
Singapore AirlinesPriceFrom $1,265Free CancellationRating
8.1
1,431 reviews
Search Singapore Airlines flights

Traveling to a place near Perth?

Book flights to Perth if you plan to visit one of these locations
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 2/13
Fri 2/20
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Australia