SEA - PER

$771 Find Cheap Flights from Seattle to Perth

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seattle to Perth departing on 1/4. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Perth

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Perth, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Perth, as well as popular online travel agencies
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41.299.237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$1,089
Overall average: $1,311
Singapore Airlines
Thu 2/19Wed 3/11
SEA - PER • 1 stop
Cheapest one-way
$771
Typical prices: $1,315-$1,347
Multiple Airlines
Sun 1/4
SEA - PER • 1 stop
Top airlines
Singapore Airlines
Cheapest • from $1,089 (round-trip)
Singapore Airlines
Best reviews • 8.1 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
September
Cheapest • 14% price drop
December
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Perth!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Seattle to Perth (SEA-PER)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Seattle to Perth that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Seattle to Perth

Thu, Feb 19 - Wed, Mar 11
Singapore Airlines Logo
8:45 am - 12:35 pmSEA-PER
35h 50m1 stop
Singapore Airlines Logo
5:05 pm - 8:10 amPER-SEA
30h 05m1 stop
$1,089Singapore 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
1:50 pm - 8:10 amPER-SEA
33h 20m1 stop
$1,175Singapore Airlines
Find Deal
Thu, Feb 19 - Tue, Mar 10
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
$1,184Singapore Airlines
Find Deal
Sat, Mar 14 - Thu, Mar 19
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
$1,203Singapore Airlines
Find Deal
Sun, Mar 1 - Sun, Mar 15
Multiple Airlines Logo
8:45 am - 5:40 amSEA-PER
28h 55m2 stops
Multiple Airlines Logo
5:35 am - 7:10 pmPER-SEA
28h 35m2 stops
$1,235Multiple Airlines
Find Deal
Thu, Feb 19 - Tue, Mar 10
Cathay Pacific Logo
4:50 pm - 10:55 pmSEA-PER
38h 05m2 stops
Cathay Pacific Logo
12:25 am - 10:36 pmPER-SEA
37h 11m2 stops
$1,244Cathay Pacific
Find Deal
Sun, Mar 1 - Sun, Mar 15
Cathay Pacific Logo
7:55 pm - 10:55 pmSEA-PER
35h 00m2 stops
Cathay Pacific Logo
8:30 am - 10:44 amPER-SEA
41h 14m2 stops
$1,246Cathay Pacific
Find Deal
Sun, Mar 1 - Sun, Mar 15
Multiple Airlines Logo
8:45 am - 5:40 amSEA-PER
28h 55m2 stops
Multiple Airlines Logo
8:40 pm - 4:05 pmPER-SEA
34h 25m3 stops
$1,250Multiple Airlines
Find Deal
Sun, Mar 1 - Sat, Mar 14
Singapore Airlines Logo
8:45 am - 2:45 pmSEA-PER
38h 00m1 stop
Singapore Airlines Logo
1:15 am - 8:10 amPER-SEA
21h 55m1 stop
$1,279Singapore Airlines
Find Deal
Sun, Mar 1 - Sat, Mar 14
Cathay Pacific Logo
7:55 pm - 10:55 pmSEA-PER
35h 00m2 stops
Cathay Pacific Logo
12:25 am - 9:31 amPER-SEA
48h 06m2 stops
$1,296Cathay Pacific
Find Deal
Booking Insights

KAYAK's insights & trends for Seattle to Perth flights

Get data-powered insights and trends into flights from Seattle to Perth to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Seattle to Perth?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Seattle to Perth, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Seattle to Perth is September, where tickets cost $1,290 (return) on average. On the other hand, the most expensive months are January and October, where the average cost of round-trip tickets is $2,082 and $1,624 respectively.

Good to know

Low seasonAugust
Cheapest flight$771
Best time to beat the crowds with an average 9% drop in price.
Most popular time to fly with an average 6% increase in price.
Flight from Seattle to Perth

When to book flights from Seattle to Perth

Are your dates flexible? Find out the best times to travel from Seattle to Perth based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Seattle to Perth

  • What is the cheapest flight from Seattle to Perth?

    In the last 3 days, the lowest price for a flight from Seattle to Perth was $771 for a one-way ticket and $1,089 for a round-trip.

  • Do I need a passport to fly between Seattle and Perth?

    Yes, you’ll need a passport to travel to Perth from Seattle.

  • Which aircraft models fly most regularly from Seattle to Perth?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Seattle to Perth?

    oneworld, and Star Alliance are the airline alliances operating flights between Seattle and Perth, with oneworld being the most commonly used for this route.

  • Which is the best airline for flights from Seattle to Perth, Singapore Airlines or Qantas Airways?

    The two airlines most popular with KAYAK users for flights from Seattle to Perth are Singapore Airlines and Qantas Airways. With an average price for the route of $1,483 and an overall rating of 8.1, Singapore Airlines is the most popular choice. Qantas Airways is also a great choice for the route, with an average price of $1,448 and an overall rating of 7.5.

  • How does KAYAK find such low prices on flights from Seattle to Perth?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Seattle to Perth.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Seattle to Perth?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Perth from Seattle is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Seattle to Perth?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Perth with an airline and back to Seattle with another airline. Booking your flights between Seattle and PER can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Seattle to Perth?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Perth from Seattle up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 3 airlines serving from Seattle to Perth

 
See real verified KAYAK customer reviews for airlines flying from Seattle to Perth. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Seattle to Perth? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.1
Singapore AirlinesOverall score based on 1401 reviews
8.3Boarding
8.0Entertainment
7.8Food
8.6Crew
8.0Comfort
Airline reviews

The consistency with Singapore Airlines is fantastic. Crew are always brilliant and food delicious in business class

10.0 ExcellentIain, Nov 2025SIN - MEL
Read more Singapore Airlines reviews

The consistency with Singapore Airlines is fantastic. Crew are always brilliant and food delicious in business class

Wish the underseat compartment don’t have a restriction, can fit a personal item such as backpack fully like most Boeing

The business class seats were very uncomfortable. When in lie flat position my legs were very restricted.

Crew and service excellent. 2 hour delay for takeoff. SQ app showed flight on time.

Good service and food. For buying items on flight should be preordered as they don’t keep much stock on board.

Very good flight from Boarding to landing -efficient and comfortable with decent entertainment options

Construction at PDX resulting in very lung walk from the rental car to the gate. SFO, extremely long walk between terminals to get to connecting Singapore airlines flight. My smart watch recorded a total of 3 miles.

Crew and service was excellent, but passengers should be offered a welcome drink before take off which did not happen. Food was very good. Unfortunately the lie-flat bed in business class was one of the most uncomfortable I have experienced. The configuration forces you to sleep with your legs at an angle instead of in a straight line, plus there is very little padding on the bed so it wasn't possible to sleep for more than 2-3 hours on an 18 hour flight. For what the airlines charges for a business class ticket their hard product leaves a lot to be desired.

It was very good experience on board to Sydney with SQ.

Everything was great keep up the good work 😁, can't ask for more.

After already paying for excess luggage prior to flight, i was advised AT check in that i had to pay $816 or forfeit my flight! The lady at the counter was SO rude and had already started offboarding me when i said i would pay it after asking her three times for the exact amount! Have lodged a formal complaint yet heard nothing. Will not ever travel via Qantas again

A few more inches of legroom is all i ask

One of the best Qantas business flights I've had. Quality product

Business class points redemption - good value for points paid, dubious value if out of your own pocket, domestic class business product okay for this length of flight. The flight left and arrived on time, crew were good, aircraft was a bit old and tired, but still miles ahead of their competitors in Virgin and Jetstar.

Airline running better than post Covid, proper boarding process now implemented, some aircraft feeling a bit old and tired, crew fine, online experience better.

Five hour flight instead of four hours due to westerly headwinds which wasn’t the fault of Qantas !

The wifi was out. Otherwise it was great flight. Richard, as CSM, was excellent.

Was bumped to a later flight because of inefficiency on part of the airline.

The Emerits/Qantas flight was cancelled to Wellington. We need a refund. Had to buy another airline ticket. How do we get the refund. Still not in Wellington.

Delayed QF59 flight once again, Qantas doesn't fail in maintaining there delayed departures and arrivals. USB points do not work nor do the power point sockets on the plane, Qantas staff admitted that on the flight. Don't expect to your charge devices. Saving grace, was the ice cream. Bottom line, if you expect to fly to HND and make it on time avoid Qantas and if you're interested in ice cream - visit 7/11.

All good. Over four hours flight if provided snacks like Qatar Airways would be better

Lobster starter in business class was not good, tough, served cold, and without butter. Movie selection was missing latest releases, did not offer older classic, high quality movies

Crew and food was good, ok leg room if you don’t have a big box under the seat. And the seats are so narrow (I’m only 70kg), will consider an alternate airline next time

Food was absolutely pathetic. I wasted so much food which I thought was inedible. I also loathe the inflight entertainment system which has very little content

Boarding from DOH to SYD the Business Class were pointed in a separate gate but no one there to receive us. Otherwise it was ok.

The flight was delayed and one member of the crew was a bit rude. But apart from that all good.

My entire row did not have power for the full duration of a 14.5 hour flight. Could not charge any devices such as laptop or phones for the entirety of the long flight. The flight attendants tried to remedy the issue by resetting the power, but were not successful. The only other solution provided was to move me to another seat on the plane which was in the middle row. I had paid for a “preferred” seat that was a window seat. This was a downgrade being offered due to the power issue.

Nothing to complain. The staff and flight was good especially the seats which was better compared than the cloth ones on Qatar airways

I was travelling 3.5 years after. Agree Economy is no business class but the food was mediocre. Ordered a Hindu meal, the salads were bitter . The food was really below quality and had no tast from what I had in the past. Indian Railways probably have a better quality food when compared. However the kids meal was really nice and really appreciate how they were taken care of. The restrooms were dirty .

My flight was with American Airlines 120. The flight was delayed 3 hours and I missed my connection. When I arrived in Doha, the AA staff told me to call an 800 number to rebook a different flight, which was unacceptable. Eventually a Qatar Air staff member helped rebook me on a flight to Manila, that was 12 hours later. They offered me a hotel and meal voucher which I declined, because I didn’t want to leave the airport. Long story short, I spent 12 hours in the Doha airport waiting for my next flight.

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

Information on your arrival and departure airports