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Cheap flights from Seattle to Perth from $1,175

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 3/14. 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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Cheap round-trip flights

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Singapore Airlines Logo
9:45 am - 11:55 pmSEA-PER
23h 10m1 stop
Singapore Airlines Logo
5:05 pm - 8:10 amPER-SEA
30h 05m1 stop
$1,175Singapore Airlines
Find Deal
Sat, Mar 14 - Fri, Mar 20
Singapore Airlines Logo
9:45 am - 11:55 pmSEA-PER
23h 10m1 stop
Singapore Airlines Logo
1:15 am - 8:10 amPER-SEA
21h 55m1 stop
$1,186Singapore Airlines
Find Deal
Sat, Mar 14 - Thu, Mar 19
Multiple Airlines Logo
6:05 am - 6:55 amSEA-PER
32h 50m2 stops
Multiple Airlines Logo
12:25 am - 9:59 pmPER-SEA
37h 34m2 stops
$1,264Multiple Airlines
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Tue, Dec 2 - Mon, Dec 8
Qatar Airways Logo
7:00 am - 11:55 amSEA-PER
37h 55m2 stops
Qatar Airways Logo
10:45 pm - 12:40 pmPER-SEA
28h 55m1 stop
$1,369Qatar Airways
Find Deal
Sat, Mar 14 - Fri, Mar 20
Qatar Airways Logo
7:00 am - 11:55 amSEA-PER
37h 55m2 stops
Qatar Airways Logo
3:55 pm - 6:54 pmPER-SEA
41h 59m2 stops
$1,454Qatar Airways
Find Deal
Sat, Mar 14 - Fri, Mar 20
Singapore Airlines Logo
8:45 am - 12:35 pmSEA-PER
35h 50m1 stop
Singapore Airlines Logo
5:05 pm - 7:10 amPER-SEA
30h 05m1 stop
$1,472Singapore Airlines
Find Deal
Thu, Feb 12 - Sat, Feb 14
Qantas Airways Logo
6:25 am - 10:10 amSEA-PER
35h 45m2 stops
Qantas Airways Logo
10:20 am - 7:35 pmPER-SEA
25h 15m2 stops
$1,515Qantas Airways
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Fri, Dec 5 - Fri, Dec 12
Multiple Airlines Logo
6:05 am - 6:55 amSEA-PER
32h 50m2 stops
Multiple Airlines Logo
8:30 am - 8:35 pmPER-SEA
28h 05m2 stops
$1,523Multiple Airlines
Find Deal
Tue, Dec 2 - Tue, Dec 9
Air Canada Logo
8:00 pm - 9:30 pmSEA-PER
34h 30m2 stops
Air Canada Logo
10:40 pm - 10:08 pmPER-SEA
38h 28m2 stops
$1,525Air Canada
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Mon, Apr 20 - Thu, Apr 23
Qantas Airways Logo
5:40 pm - 1:35 pmSEA-PER
28h 55m2 stops
Qantas Airways Logo
10:30 am - 10:49 pmPER-SEA
27h 19m2 stops
$1,977Qantas Airways
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Mon, Apr 20 - Thu, Apr 23

Singapore Airlines flights from Seattle to Perth

Our best Singapore Airlines deals on Seattle to Perth flight tickets
Singapore Airlines
Mar 14
SEA9:45 amSeattle/Tacoma Intl
23h 10m
1 stop
PER11:55 pmPerth
Mar 20
PER5:05 pmPerth
30h 05m
1 stop
SEA8:10 amSeattle/Tacoma Intl
$1,175
Find similar
Singapore Airlines
Mar 14
SEA9:45 amSeattle/Tacoma Intl
23h 10m
1 stop
PER11:55 pmPerth
Mar 19
PER1:15 amPerth
21h 55m
1 stop
SEA8:10 amSeattle/Tacoma Intl
$1,186
Find similar
Singapore Airlines
Feb 12
SEA8:45 amSeattle/Tacoma Intl
35h 50m
1 stop
PER12:35 pmPerth
Feb 14
PER5:05 pmPerth
30h 05m
1 stop
SEA7:10 amSeattle/Tacoma Intl
$1,472
Find similar

Qatar Airways flights from Seattle to Perth

Our best Qatar Airways deals on Seattle to Perth flight tickets
Qatar Airways
Mar 14
SEA7:00 amSeattle/Tacoma Intl
37h 55m
2 stops
PER11:55 amPerth
Mar 20
PER10:45 pmPerth
28h 55m
1 stop
SEA12:40 pmSeattle/Tacoma Intl
$1,369
Find similar
Qatar Airways
Mar 14
SEA7:00 amSeattle/Tacoma Intl
37h 55m
2 stops
PER11:55 amPerth
Mar 20
PER3:55 pmPerth
41h 59m
2 stops
SEA6:54 pmSeattle/Tacoma Intl
$1,454
Find similar
Qatar Airways
Apr 20
SEA4:30 pmSeattle/Tacoma Intl
28h 25m
1 stop
PER11:55 amPerth
Apr 23
PER3:40 pmPerth
36h 05m
1 stop
SEA12:45 pmSeattle/Tacoma Intl
$1,561
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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 November 6, 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

Sat 3/14

9:45 am-11:55 pm

1 stop23h 10m

Perth

Fri 3/20

5:05 pm-8:10 am

1 stop30h 05m

$1,175

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Sat 3/14

9:45 am-11:55 pm

1 stop23h 10m

Perth

Thu 3/19

1:15 am-8:10 am

1 stop21h 55m

$1,186

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Tue 12/2

6:05 am-6:55 am

2 stops32h 50m

Perth

Mon 12/8

12:25 am-9:59 pm

2 stops37h 34m

$1,264

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Sat 3/14

7:00 am-11:55 am

2 stops37h 55m

Perth

Fri 3/20

10:45 pm-12:40 pm

1 stop28h 55m

$1,369

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Sat 3/14

7:00 am-11:55 am

2 stops37h 55m

Perth

Fri 3/20

3:55 pm-6:54 pm

2 stops41h 59m

$1,454

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Thu 2/12

8:45 am-12:35 pm

1 stop35h 50m

Perth

Sat 2/14

5:05 pm-7:10 am

1 stop30h 05m

$1,472

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Fri 12/5

6:25 am-10:10 am

2 stops35h 45m

Perth

Fri 12/12

10:20 am-7:35 pm

2 stops25h 15m

$1,515

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Tue 12/2

6:05 am-6:55 am

2 stops32h 50m

Perth

Tue 12/9

8:30 am-8:35 pm

2 stops28h 05m

$1,523

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Mon 4/20

8:00 pm-9:30 pm

2 stops34h 30m

Perth

Thu 4/23

10:40 pm-10:08 pm

2 stops38h 28m

$1,525

SeattlePerth

SEA - PER

SEAPER

Seattle/Tacoma Intl

Mon 4/20

5:40 pm-1:35 pm

2 stops28h 55m

Perth

Thu 4/23

10:30 am-10:49 pm

2 stops27h 19m

$1,977

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, 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 February is also very affordable. Most momondo users find prices during this month for around $1,315.

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.

How have Seattle to Perth flight prices changed over time?

As of November 2025, prices for Seattle to Perth flights are approximately 0% more expensive 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
Singapore AirlinesPriceFrom $1,239Free CancellationRating
8.1
1,393 reviews
Search Singapore Airlines flights
Qantas AirwaysPriceFrom $1,258Free CancellationRating
7.5
929 reviews
Search Qantas Airways flights
Qatar AirwaysPriceFrom $1,307Free CancellationRating
7.4
3,661 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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