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Cheap flights from Seattle to Perth from $1,092

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 2/19. 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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0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
Singapore Airlines Logo
8:45 am - 12:35 pmSEA-PER
35h 50m1 stop
Singapore Airlines Logo
1:50 pm - 8:10 amPER-SEA
33h 20m1 stop
$1,092Singapore Airlines
Find Deal
Thu, Feb 19 - Wed, Mar 11
Multiple Airlines Logo
9:45 am - 4:15 amSEA-PER
27h 30m1 stop
Multiple Airlines Logo
8:40 pm - 7:40 pmPER-SEA
38h 00m2 stops
$1,103Multiple Airlines
Find Deal
Tue, Mar 10 - Wed, Mar 25
Multiple Airlines Logo
9:45 am - 4:15 amSEA-PER
27h 30m1 stop
Multiple Airlines Logo
8:40 pm - 7:40 pmPER-SEA
38h 00m2 stops
$1,117Multiple Airlines
Find Deal
Sun, Mar 8 - Wed, Mar 25
Multiple Airlines Logo
8:45 am - 4:15 amSEA-PER
27h 30m1 stop
Multiple Airlines Logo
8:40 pm - 7:40 pmPER-SEA
38h 00m2 stops
$1,173Multiple Airlines
Find Deal
Sat, Mar 7 - Wed, Mar 25
Multiple Airlines Logo
5:50 pm - 2:45 pmSEA-PER
29h 55m2 stops
Multiple Airlines Logo
5:05 pm - 8:10 amPER-SEA
30h 05m1 stop
$1,174Multiple Airlines
Find Deal
Mon, Mar 9 - Wed, Mar 25
Multiple Airlines Logo
1:10 am - 4:05 amSEA-PER
35h 55m2 stops
Multiple Airlines Logo
4:55 am - 7:10 pmPER-SEA
29h 15m2 stops
$1,184Multiple Airlines
Find Deal
Sun, Mar 8 - Wed, Mar 25
Singapore Airlines Logo
8:45 am - 12:35 pmSEA-PER
35h 50m1 stop
Singapore Airlines Logo
1:15 am - 8:10 amPER-SEA
45h 55m1 stop
$1,188Singapore Airlines
Find Deal
Thu, Feb 19 - Tue, Mar 10
Cathay Pacific Logo
7:55 pm - 10:55 pmSEA-PER
60h 00m2 stops
Cathay Pacific Logo
12:25 am - 10:36 pmPER-SEA
37h 11m2 stops
$1,232Cathay Pacific
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Mon, Mar 9 - Tue, Mar 24
Cathay Pacific Logo
4:50 pm - 10:55 pmSEA-PER
38h 05m2 stops
Cathay Pacific Logo
8:30 am - 8:47 amPER-SEA
39h 17m2 stops
$1,238Cathay Pacific
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Thu, Feb 19 - Wed, Mar 11
Cathay Pacific Logo
4:50 pm - 10:55 pmSEA-PER
38h 05m2 stops
Cathay Pacific Logo
12:25 am - 4:04 pmPER-SEA
54h 39m2 stops
$1,247Cathay Pacific
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Thu, Feb 19 - Tue, Mar 10

Cathay Pacific flights from Seattle to Perth

Our best Cathay Pacific deals on Seattle to Perth flight tickets
Cathay Pacific
Mar 9
SEA7:55 pmSeattle/Tacoma Intl
60h 00m
2 stops
PER10:55 pmPerth
Mar 25
PER8:30 amPerth
29h 06m
2 stops
SEA10:36 pmSeattle/Tacoma Intl
$1,232
Find similar
Cathay Pacific
Feb 19
SEA4:50 pmSeattle/Tacoma Intl
38h 05m
2 stops
PER10:55 pmPerth
Mar 11
PER8:30 amPerth
39h 17m
2 stops
SEA8:47 amSeattle/Tacoma Intl
$1,238
Find similar
Cathay Pacific
Feb 19
SEA4:50 pmSeattle/Tacoma Intl
38h 05m
2 stops
PER10:55 pmPerth
Mar 10
PER12:25 amPerth
54h 39m
2 stops
SEA4:04 pmSeattle/Tacoma Intl
$1,247
Find similar

Singapore Airlines flights from Seattle to Perth

Our best Singapore Airlines deals on Seattle to Perth flight tickets
Singapore Airlines
Feb 19
SEA8:45 amSeattle/Tacoma Intl
35h 50m
1 stop
PER12:35 pmPerth
Mar 11
PER1:50 pmPerth
33h 20m
1 stop
SEA8:10 amSeattle/Tacoma Intl
$1,092
Find similar
Singapore Airlines
Feb 19
SEA8:45 amSeattle/Tacoma Intl
35h 50m
1 stop
PER12:35 pmPerth
Mar 10
PER1:15 amPerth
45h 55m
1 stop
SEA8:10 amSeattle/Tacoma Intl
$1,188
Find similar
Singapore Airlines
Mar 8
SEA9:45 amSeattle/Tacoma Intl
38h 00m
1 stop
PER2:45 pmPerth
Mar 11
PER1:50 pmPerth
33h 20m
1 stop
SEA8:10 amSeattle/Tacoma Intl
$1,459
Find similar

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 November 19, 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

Thu 2/19

8:45 am-12:35 pm

1 stop35h 50m

Perth

Wed 3/11

1:50 pm-8:10 am

1 stop33h 20m

$1,092

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Tue 3/10

9:45 am-4:15 am

1 stop27h 30m

Perth

Wed 3/25

8:40 pm-7:40 pm

2 stops38h 00m

$1,103

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Sun 3/8

9:45 am-4:15 am

1 stop27h 30m

Perth

Wed 3/25

8:40 pm-7:40 pm

2 stops38h 00m

$1,117

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Sat 3/7

8:45 am-4:15 am

1 stop27h 30m

Perth

Wed 3/25

8:40 pm-7:40 pm

2 stops38h 00m

$1,173

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Mon 3/9

5:50 pm-2:45 pm

2 stops29h 55m

Perth

Wed 3/25

5:05 pm-8:10 am

1 stop30h 05m

$1,174

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Sun 3/8

1:10 am-4:05 am

2 stops35h 55m

Perth

Wed 3/25

4:55 am-7:10 pm

2 stops29h 15m

$1,184

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Thu 2/19

8:45 am-12:35 pm

1 stop35h 50m

Perth

Tue 3/10

1:15 am-8:10 am

1 stop45h 55m

$1,188

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Mon 3/9

7:55 pm-10:55 pm

2 stops60h 00m

Perth

Tue 3/24

12:25 am-10:36 pm

2 stops37h 11m

$1,232

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Thu 2/19

4:50 pm-10:55 pm

2 stops38h 05m

Perth

Wed 3/11

8:30 am-8:47 am

2 stops39h 17m

$1,238

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Thu 2/19

4:50 pm-10:55 pm

2 stops38h 05m

Perth

Tue 3/10

12:25 am-4:04 pm

2 stops54h 39m

$1,247

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 15 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?

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. 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
Singapore AirlinesPriceFrom $1,239Free CancellationRating
8.1
1,407 reviews
Search Singapore Airlines flights
Qantas AirwaysPriceFrom $1,258Free CancellationRating
7.5
942 reviews
Search Qantas Airways flights
Qatar AirwaysPriceFrom $1,307Free CancellationRating
7.4
3,664 reviews
Search Qatar Airways 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.

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