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Cheap flights from Seattle to Perth from $1,117

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

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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
$1,117Singapore Airlines
Tue, Apr 7 - Mon, Apr 27
Multiple Airlines Logo
10:15 am - 12:30 pm
SEA
-
PER
35h 15m
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
Qatar Airways Logo
5:05 pm - 6:45 pm
SEA
-
PER
34h 40m
1 stop
Qatar Airways Logo
10:45 pm - 12:40 pm
PER
-
SEA
28h 55m
1 stop
$1,282Qatar Airways
Mon, Mar 9 - Mon, Mar 16
Multiple Airlines Logo
1:10 am - 12:40 am
SEA
-
PER
32h 30m
3 stops
Multiple Airlines Logo
5:15 am - 7:10 pm
PER
-
SEA
28h 55m
3 stops
$1,297Multiple Airlines
Sun, Mar 8 - Mon, Mar 16
Multiple Airlines Logo
1:30 pm - 2:00 pm
SEA
-
PER
33h 30m
2 stops
Multiple Airlines Logo
5:15 am - 7:10 pm
PER
-
SEA
28h 55m
3 stops
$1,310Multiple Airlines
Mon, Mar 9 - Mon, Mar 16
Cathay Pacific Logo
6:00 am - 10:55 pm
SEA
-
PER
49h 55m
2 stops
Cathay Pacific Logo
8:30 am - 10:42 pm
PER
-
SEA
53h 12m
2 stops
$1,317Cathay Pacific
Mon, Mar 9 - Mon, Mar 16
Cathay Pacific Logo
6:59 pm - 7:45 am
SEA
-
PER
45h 46m
2 stops
Cathay Pacific Logo
12:10 am - 8:58 am
PER
-
SEA
47h 48m
2 stops
$1,327Cathay Pacific
Tue, Apr 7 - Mon, Apr 27
Cathay Pacific Logo
6:25 am - 10:40 pm
SEA
-
PER
49h 15m
2 stops
Cathay Pacific Logo
12:10 am - 7:04 am
PER
-
SEA
45h 54m
2 stops
$1,328Cathay Pacific
Tue, Apr 7 - Mon, Apr 27
Multiple Airlines Logo
6:59 pm - 1:45 pm
SEA
-
PER
27h 46m
3 stops
Multiple Airlines Logo
11:55 pm - 3:50 pm
PER
-
SEA
30h 55m
2 stops
$1,793Multiple Airlines
Tue, Apr 7 - Tue, Apr 28
Multiple Airlines Logo
6:59 pm - 1:45 pm
SEA
-
PER
27h 46m
3 stops
Multiple Airlines Logo
11:55 pm - 3:50 pm
PER
-
SEA
30h 55m
2 stops
$1,795Multiple Airlines
Tue, Apr 7 - Tue, Apr 28

Qatar Airways flights from Seattle to Perth

Our best Qatar Airways deals on Seattle to Perth flight tickets
Qatar Airways
Mar 9
SEA5:05 pmSeattle/Tacoma Intl
34h 40m
1 stop
PER6:45 pmPerth
Mar 16
PER10:45 pmPerth
28h 55m
1 stop
SEA12:40 pmSeattle/Tacoma Intl
$1,282
Qatar Airways
Mar 8
SEA5:05 pmSeattle/Tacoma Intl
28h 15m
1 stop
PER12:20 pmPerth
Mar 10
PER10:45 pmPerth
28h 55m
1 stop
SEA12:40 pmSeattle/Tacoma Intl
$1,921
Qatar Airways
Mar 8
SEA5:05 pmSeattle/Tacoma Intl
28h 15m
1 stop
PER12:20 pmPerth
Mar 10
PER10:45 pmPerth
28h 55m
1 stop
SEA12:40 pmSeattle/Tacoma Intl
$1,922

Cathay Pacific flights from Seattle to Perth

Our best Cathay Pacific deals on Seattle to Perth flight tickets
Cathay Pacific
Mar 9
SEA6:00 amSeattle/Tacoma Intl
49h 55m
2 stops
PER10:55 pmPerth
Mar 16
PER8:30 amPerth
53h 12m
2 stops
SEA10:42 pmSeattle/Tacoma Intl
$1,317
Cathay Pacific
Apr 7
SEA6:59 pmSeattle/Tacoma Intl
45h 46m
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
SEA6:25 amSeattle/Tacoma Intl
49h 15m
2 stops
PER10:40 pmPerth
Apr 27
PER12:10 amPerth
45h 54m
2 stops
SEA7:04 amSeattle/Tacoma Intl
$1,328

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 24, 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

$1,117

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-4:17 pm

2 stops30h 07m

$1,139

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Mon 3/9

5:05 pm-6:45 pm

1 stop34h 40m

Perth

Mon 3/16

10:45 pm-12:40 pm

1 stop28h 55m

$1,282

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Sun 3/8

1:10 am-12:40 am

3 stops32h 30m

Perth

Mon 3/16

5:15 am-7:10 pm

3 stops28h 55m

$1,297

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Mon 3/9

1:30 pm-2:00 pm

2 stops33h 30m

Perth

Mon 3/16

5:15 am-7:10 pm

3 stops28h 55m

$1,310

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Mon 3/9

6:00 am-10:55 pm

2 stops49h 55m

Perth

Mon 3/16

8:30 am-10:42 pm

2 stops53h 12m

$1,317

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Tue 4/7

6:59 pm-7:45 am

2 stops45h 46m

Perth

Mon 4/27

12:10 am-8:58 am

2 stops47h 48m

$1,327

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Tue 4/7

6:25 am-10:40 pm

2 stops49h 15m

Perth

Mon 4/27

12:10 am-7:04 am

2 stops45h 54m

$1,328

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Tue 4/7

6:59 pm-1:45 pm

3 stops27h 46m

Perth

Tue 4/28

11:55 pm-3:50 pm

2 stops30h 55m

$1,793

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Tue 4/7

6:59 pm-1:45 pm

3 stops27h 46m

Perth

Tue 4/28

11:55 pm-3:50 pm

2 stops30h 55m

$1,795

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 18% 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 55m

Direct flights

None
The fastest flight from Seattle to Perth takes 27h 55m
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 55m 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
3,730 reviews
Search Qatar Airways flights
Qantas AirwaysPriceFrom $1,258Free CancellationRating
7.5
975 reviews
Search Qantas Airways flights
Singapore AirlinesPriceFrom $1,265Free CancellationRating
8.1
1,436 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.

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