How long is the flight from Seattle to Perth?

For as low as $2,116, Cathay Pacific can have you in Perth from Seattle in 36h 10m. Seattle and Perth are separated by a distance of 14862 km. This flight may include one or multiple stops.

In terms of precipitation, rainfall in Perth ranges from 0.0 - 170.0 inches per month. June is typically the wettest month, when rainfall can reach 170.0 mm. January is typically the driest time to visit Perth when rainfall is around 0.0 mm.

If weather is an important factor for your trip to Perth, use this chart to help with planning. For those seeking warmer temperatures, January is the ideal time of year to visit, when temperatures reach an average of 24.0 C. Travellers hoping to avoid the cold should look outside of July, when temperatures are typically at their lowest (around 12.0 C).

What is the cheapest time of day to fly from SEA to PER?

When flying from Seattle to Perth, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Can I find deals for flights from Seattle to Perth that include hotel bookings?

Yes. In addition to deals on Seattle to Perth flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from Seattle to Perth?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Perth.

Can I find deals for business class flights from Seattle to Perth?

Yes. Cheapflights offers flight deals from Seattle to Perth by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$746+ Cheap Flights from Seattle to Perth

Cheap flight deals from Seattle to Perth

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

Cheapest flights from Seattle to Perth
Explore the most affordable flight options available from Seattle to Perth. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 5 November 2026.

Tue 10/1110:25 -

1 stop44h 30m

Mon 16/1100:25 -

1 stop24h 20m

Deal found 3/11$1,878

Tue 10/1115:51 -

2 stops39h 04m

Mon 16/1100:25 -

1 stop24h 20m

Deal found 3/11$1,886

Mon 30/1100:10 -

3 stops35h 30m

Tue 8/1217:15 -

2 stops31h 50m

Deal found 3/11$2,015

Sun 29/1108:40 -

1 stop31h 45m

Sun 6/1220:25 -

2 stops37h 45m

Deal found 1/11$2,046

Sun 29/1115:50 -

2 stops63h 05m

Sun 6/1208:30 -

2 stops28h 54m

Deal found 1/11$2,098

Sun 29/1108:40 -

1 stop35h 55m

Sat 5/1201:20 -

1 stop21h 45m

Deal found 1/11$2,258

Tue 1/1208:40 -

1 stop23h 25m

Tue 8/1206:40 -

1 stop40h 25m

Deal found 3/11$2,321

Find flight deals from Seattle to Perth

Round-trip from	$1,648
One-way from	$746
Popular in	August
Cheapest in	June
Average price	$2,593

Singapore Airlines
3/3-16/3
2 total stops
69h 10m total
Seattle to Perth

Search Deals

2/3-31/12
2 total stops
29h 35m total
Seattle to Perth

Search Deals

Highest demand for flights based on searches. 14% potential increase in price ($554 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($64 potential savings vs. average return price).

Search Deals

Average for round-trip flights in November 2026

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

SeattlePerth

SEA Seattle/Tacoma Intl - PER Perth

SEAPER

Seattle/Tacoma Intl

Thu 8/4

10:15-06:05

2 stops28h 50m

Perth

Wed 31/12

00:00-08:00

Nonstop0h 00m

$766

SeattlePerth

SEA Seattle/Tacoma Intl - PER Perth

SEAPER

Seattle/Tacoma Intl

Fri 2/4

10:15-21:45

2 stops44h 30m

Perth

Wed 31/12

00:00-08:00

Nonstop0h 00m

$784

Fastest return journey

SeattlePerth

SEA Seattle/Tacoma Intl - PER Perth

SEAPER

Seattle/Tacoma Intl

Thu 8/4

11:45-06:50

1 stop28h 05m

Perth

Wed 31/12

00:00-08:00

Nonstop0h 00m

$943

SeattlePerth

SEA Seattle/Tacoma Intl - PER Perth

SEAPER

Seattle/Tacoma Intl

Sun 17/1

08:40-03:50

2 stops51h 10m

Perth

Wed 31/12

00:00-08:00

Nonstop0h 00m

$959

SeattlePerth

SEA Seattle/Tacoma Intl - PER Perth

SEAPER

Seattle/Tacoma Intl

Tue 1/12

10:25-06:55

1 stop28h 30m

Perth

Wed 31/12

00:00-08:00

Nonstop0h 00m

$1,229

SeattlePerth

SEA Seattle/Tacoma Intl - PER Perth

SEAPER

Seattle/Tacoma Intl

Sat 12/12

16:42-14:10

2 stops29h 28m

Perth

Wed 31/12

00:00-08:00

Nonstop0h 00m

$1,478

SeattlePerth

SEA Seattle/Tacoma Intl - PER Perth

SEAPER

Seattle/Tacoma Intl

Mon 3/5

11:45-22:40

1 stop43h 55m

Perth

Sun 16/5

00:10-10:05

1 stop24h 55m

$1,773

SeattlePerth

SEA Seattle/Tacoma Intl - PER Perth

SEAPER

Seattle/Tacoma Intl

Mon 3/5

07:00-06:50

2 stops32h 50m

Perth

Sun 16/5

00:10-10:05

1 stop24h 55m

$1,868

SeattlePerth

SEA Seattle/Tacoma Intl - PER Perth

SEAPER

Seattle/Tacoma Intl

Wed 10/3

06:05-06:55

2 stops32h 50m

Perth

Wed 17/3

00:25-09:45

1 stop24h 20m

$1,920

SeattlePerth

SEA Seattle/Tacoma Intl - PER Perth

SEAPER

Seattle/Tacoma Intl

Sat 20/3

08:45-11:55

2 stops36h 10m

Perth

Fri 16/4

22:45-12:55

1 stop29h 10m

$2,116

Flights are sorted by cheapest return flights first.

Deals found on 3/11

Showing 1-10 of 14 resultsSorted by cheapest first

Best time to book a flight from Seattle to Perth

Have a flexible travel schedule? Discover the best time to fly to Perth from Seattle with our price prediction graph.

SEA-PER

Estimated return price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Seattle to Perth

How much does it cost for a return flight from Seattle to Perth?

Airfare is below average for this route at the moment.

Seattle to Perth flights typically cost between $2,243 and $2,764 in March.
The cheapest return price found within the last 5 days was $1,648 on Singapore Airlines (3 Mar–16 Mar).

Related info for your journey

How long is the flight from Seattle to Perth?
For as low as $2,116, Cathay Pacific can have you in Perth from Seattle in 36h 10m. Seattle and Perth are separated by a distance of 14862 km. This flight may include one or multiple stops.
Can I find deals for flights from Seattle to Perth that include hotel bookings?
Yes. In addition to deals on Seattle to Perth flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Seattle to Perth?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Perth.
Can I find deals for business class flights from Seattle to Perth?
Yes. Cheapflights offers flight deals from Seattle to Perth by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Fremantle

Mandurah

Rottnest Island

Scarborough

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Alternative routes

Complete your trip

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Spokane to Perth flights

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How does Cheapflights help users find flights from Seattle to Perth?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Seattle to Perth. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Seattle to Perth?

Millions of users choose and trust Cheapflights to book the best flight deals from Seattle to Perth for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Seattle to Perth with no change fees?

Certainly. Search results for flights to Perth from Seattle shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Seattle to Perth become cheaper?

Of course! You can now track prices for flights from Seattle to Perth and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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Cheap flights from Seattle to Perth from $746

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/3. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Seattle to Perth

Cheapest flights from Seattle to PerthExplore the most affordable flight options available from Seattle to Perth. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 5 November 2026.

Explore the most affordable flight options available from Seattle to Perth. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 5 November 2026.

Best flights from Seattle to PerthDiscover carefully curated flight deals from Seattle to Perth that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 5 November 2026.

Discover carefully curated flight deals from Seattle to Perth that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 5 November 2026.

Last-minute flights from Seattle to PerthDiscover last-minute flight deals from Seattle to Perth. Data last updated 5 November 2026 and is based on user searches.

Discover last-minute flight deals from Seattle to Perth. Data last updated 5 November 2026 and is based on user searches.

One-way flights from Seattle to PerthSearch for one-way flight options from Seattle to Perth. Find affordable one-way fares based on user searches. Data last updated 5 November 2026.

Search for one-way flight options from Seattle to Perth. Find affordable one-way fares based on user searches. Data last updated 5 November 2026.

Find flight deals from Seattle to Perth

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Use the filters below to find and compare flights from Seattle to Perth that are best for you.

Best time to book a flight from Seattle to Perth

Have a flexible travel schedule? Discover the best time to fly to Perth from Seattle with our price prediction graph.

Cheapflights Insights

How much does it cost for a return flight from Seattle to Perth?

Airfare is below average for this route at the moment.

Seattle to Perth flights typically cost between $2,243 and $2,764 in March.The cheapest return price found within the last 5 days was $1,648 on Singapore Airlines (3 Mar–16 Mar).

Related info for your journey

How long is the flight from Seattle to Perth?

Can I find deals for flights from Seattle to Perth that include hotel bookings?

How can I find direct flights from Seattle to Perth?

Can I find deals for business class flights from Seattle to Perth?

Travelling to a place near Perth?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Seattle to Perth

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Perth by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to Western Australia

Book a non-stop flight to one of these other cities located in Western Australia.

Search flights from Seattle to Perth by cabin class

Find flights from Seattle to Perth, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Seattle and Perth flights

Browse other Seattle and Perth flight options. Last updated on 5 November 2026.

Other flights to Perth

Explore flights to Perth departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 5 November 2026.

Popular flight searches

Check out other popular destinations found by fellow travellers in 2026

Fly with Cheapflights

How does Cheapflights help users find flights from Seattle to Perth?

Why should you use Cheapflights to find cheap flight tickets from Seattle to Perth?

Can Cheapflights find flights from Seattle to Perth with no change fees?

Can Cheapflights notify me if prices for flights from Seattle to Perth become cheaper?

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Travel Smart

Cheapest flights from Seattle to Perth
Explore the most affordable flight options available from Seattle to Perth. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 5 November 2026.

Best flights from Seattle to Perth
Discover carefully curated flight deals from Seattle to Perth that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 5 November 2026.

Last-minute flights from Seattle to Perth
Discover last-minute flight deals from Seattle to Perth. Data last updated 5 November 2026 and is based on user searches.

One-way flights from Seattle to Perth
Search for one-way flight options from Seattle to Perth. Find affordable one-way fares based on user searches. Data last updated 5 November 2026.

Seattle to Perth flights typically cost between $2,243 and $2,764 in March.
The cheapest return price found within the last 5 days was $1,648 on Singapore Airlines (3 Mar–16 Mar).