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Cheap flights from Seattle to Perth from $597

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 10/14. 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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Find the cheapest flights from Seattle to Perth

Cheap round-trip flights

Multiple Airlines Logo
12:00 pm - 8:50 amSEA-PER
29h 50m2 stops
Multiple Airlines Logo
11:35 pm - 7:10 amPER-SEA
23h 35m1 stop
$1,105Multiple Airlines
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Thu, Oct 30 - Thu, Nov 6
Singapore Airlines Logo
8:45 am - 11:55 pmSEA-PER
23h 10m1 stop
Singapore Airlines Logo
1:50 pm - 7:10 amPER-SEA
33h 20m1 stop
$1,115Singapore Airlines
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Thu, Nov 13 - Wed, Nov 26
Multiple Airlines Logo
1:10 am - 8:50 amSEA-PER
40h 40m2 stops
Multiple Airlines Logo
11:35 pm - 7:10 amPER-SEA
23h 35m1 stop
$1,177Multiple Airlines
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Wed, Oct 29 - Thu, Nov 6
Multiple Airlines Logo
1:10 am - 4:00 amSEA-PER
35h 50m3 stops
Multiple Airlines Logo
5:50 pm - 7:10 amPER-SEA
29h 20m1 stop
$1,198Multiple Airlines
Find Deal
Tue, Oct 28 - Wed, Nov 5
Air Canada Logo
8:00 pm - 8:10 pmSEA-PER
33h 10m2 stops
Air Canada Logo
10:30 pm - 9:31 amPER-SEA
27h 01m2 stops
$1,202Air Canada
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Thu, Oct 30 - Thu, Nov 6
Qatar Airways Logo
4:30 pm - 6:40 pmSEA-PER
35h 10m1 stop
Qatar Airways Logo
10:45 pm - 11:40 amPER-SEA
28h 55m1 stop
$1,282Qatar Airways
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Thu, Oct 23 - Tue, Nov 11
Qatar Airways Logo
4:30 pm - 6:40 pmSEA-PER
35h 10m1 stop
Qatar Airways Logo
10:45 pm - 11:40 amPER-SEA
28h 55m1 stop
$1,288Qatar Airways
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Thu, Oct 23 - Tue, Nov 11
Qantas Airways Logo
6:20 am - 6:00 pmSEA-PER
43h 40m2 stops
Qantas Airways Logo
8:00 am - 8:23 pmPER-SEA
28h 23m2 stops
$1,309Qantas Airways
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Thu, Nov 13 - Wed, Nov 26
Cathay Pacific Logo
6:20 am - 6:55 amSEA-PER
32h 35m2 stops
Cathay Pacific Logo
12:15 am - 6:11 pmPER-SEA
33h 56m2 stops
$1,392Cathay Pacific
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Thu, Nov 13 - Tue, Nov 25
Cathay Pacific Logo
6:59 pm - 6:55 amSEA-PER
44h 56m2 stops
Cathay Pacific Logo
12:25 am - 6:37 pmPER-SEA
58h 12m2 stops
$1,401Cathay Pacific
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Thu, Oct 23 - Mon, Nov 10

Qatar Airways flights from Seattle to Perth

Our best Qatar Airways deals on Seattle to Perth flight tickets
Qatar Airways
Oct 23
SEA4:30 pmSeattle/Tacoma Intl
35h 10m
1 stop
PER6:40 pmPerth
Nov 11
PER10:45 pmPerth
28h 55m
1 stop
SEA11:40 amSeattle/Tacoma Intl
$1,282
Find similar
Qatar Airways
Oct 23
SEA4:30 pmSeattle/Tacoma Intl
35h 10m
1 stop
PER6:40 pmPerth
Nov 11
PER10:45 pmPerth
28h 55m
1 stop
SEA11:40 amSeattle/Tacoma Intl
$1,288
Find similar
Qatar Airways
Oct 23
SEA4:30 pmSeattle/Tacoma Intl
35h 10m
1 stop
PER6:40 pmPerth
Nov 11
PER10:45 pmPerth
28h 55m
1 stop
SEA11:40 amSeattle/Tacoma Intl
$1,291
Find similar

Cathay Pacific flights from Seattle to Perth

Our best Cathay Pacific deals on Seattle to Perth flight tickets
Cathay Pacific
Nov 13
SEA6:20 amSeattle/Tacoma Intl
32h 35m
2 stops
PER6:55 amPerth
Nov 25
PER12:15 amPerth
33h 56m
2 stops
SEA6:11 pmSeattle/Tacoma Intl
$1,392
Find similar
Cathay Pacific
Oct 23
SEA6:59 pmSeattle/Tacoma Intl
44h 56m
2 stops
PER6:55 amPerth
Nov 10
PER12:25 amPerth
58h 12m
2 stops
SEA6:37 pmSeattle/Tacoma Intl
$1,401
Find similar
Cathay Pacific
Oct 23
SEA6:59 pmSeattle/Tacoma Intl
44h 56m
2 stops
PER6:55 amPerth
Nov 10
PER12:15 amPerth
38h 09m
2 stops
SEA10:24 pmSeattle/Tacoma Intl
$1,409
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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 September 16, 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 10/30

12:00 pm-8:50 am

2 stops29h 50m

Perth

Thu 11/6

11:35 pm-7:10 am

1 stop23h 35m

$1,105

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Thu 11/13

8:45 am-11:55 pm

1 stop23h 10m

Perth

Wed 11/26

1:50 pm-7:10 am

1 stop33h 20m

$1,115

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Wed 10/29

1:10 am-8:50 am

2 stops40h 40m

Perth

Thu 11/6

11:35 pm-7:10 am

1 stop23h 35m

$1,177

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Tue 10/28

1:10 am-4:00 am

3 stops35h 50m

Perth

Wed 11/5

5:50 pm-7:10 am

1 stop29h 20m

$1,198

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Thu 10/30

8:00 pm-8:10 pm

2 stops33h 10m

Perth

Thu 11/6

10:30 pm-9:31 am

2 stops27h 01m

$1,202

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Thu 10/23

4:30 pm-6:40 pm

1 stop35h 10m

Perth

Tue 11/11

10:45 pm-11:40 am

1 stop28h 55m

$1,282

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Thu 10/23

4:30 pm-6:40 pm

1 stop35h 10m

Perth

Tue 11/11

10:45 pm-11:40 am

1 stop28h 55m

$1,288

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Thu 11/13

6:20 am-6:00 pm

2 stops43h 40m

Perth

Wed 11/26

8:00 am-8:23 pm

2 stops28h 23m

$1,309

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Thu 11/13

6:20 am-6:55 am

2 stops32h 35m

Perth

Tue 11/25

12:15 am-6:11 pm

2 stops33h 56m

$1,392

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Thu 10/23

6:59 pm-6:55 am

2 stops44h 56m

Perth

Mon 11/10

12:25 am-6:37 pm

2 stops58h 12m

$1,401

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, 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 $1,315. If you are unable to visit Perth during the month of February, then departing from Seattle during the month August is also very affordable. Most momondo users find prices during this month for around $1,393.

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 35% 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 September 2025, prices for Seattle to Perth flights are approximately 10% 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 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?

  • 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
Air CanadaPriceFrom $1,158Free CancellationRating
7.1
10,000 reviews
Search Air Canada flights
Singapore AirlinesPriceFrom $1,218Free CancellationRating
8.1
1,365 reviews
Search Singapore Airlines flights
Qantas AirwaysPriceFrom $1,258Free CancellationRating
7.5
907 reviews
Search Qantas Airways flights
Qatar AirwaysPriceFrom $1,315Free CancellationRating
7.4
3,624 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.

An easier way to manage your Perth trip

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