PER - SEA

$715 Find Cheap Flights from Perth to Seattle

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Perth to Seattle departing on 1/20. 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

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

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

Cheap Flights from Perth to Seattle (PER-SEA)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Perth to Seattle 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 Perth to Seattle

Wed, Oct 29 - Wed, Nov 5
Japan Airlines Logo
10:30 am - 10:50 amPER-SEA
39h 20m2 stops
Japan Airlines Logo
12:10 pm - 11:55 pmSEA-PER
43h 45m2 stops
$922Japan Airlines
Find Deal
Tue, Oct 28 - Tue, Nov 4
Japan Airlines Logo
10:30 am - 10:50 amPER-SEA
39h 20m2 stops
Japan Airlines Logo
12:10 pm - 11:55 pmSEA-PER
43h 45m2 stops
$933Japan Airlines
Find Deal
Thu, Oct 30 - Thu, Nov 6
Japan Airlines Logo
10:30 am - 10:50 amPER-SEA
39h 20m2 stops
Japan Airlines Logo
12:10 pm - 11:55 pmSEA-PER
43h 45m2 stops
$954Japan Airlines
Find Deal
Tue, Oct 28 - Mon, Nov 3
 Logo
4:40 am - 7:10 pmPER-SEA
29h 30m3 stops
 Logo
12:10 am - 4:00 amSEA-PER
35h 50m3 stops
$1,054
Find Deal
Sat, Oct 4 - Sat, Oct 11
 Logo
10:30 am - 9:58 pmPER-SEA
26h 28m2 stops
 Logo
7:59 pm - 11:05 amSEA-PER
48h 06m2 stops
$1,062
Find Deal
Fri, Jan 30 - Tue, Feb 17
American Airlines Logo
10:40 pm - 12:45 pmPER-SEA
30h 05m2 stops
American Airlines Logo
7:04 pm - 12:25 pmSEA-PER
25h 21m2 stops
$1,144American Airlines
Find Deal
Thu, Jan 29 - Tue, Feb 17
Singapore Airlines Logo
1:15 am - 7:10 amPER-SEA
21h 55m1 stop
Singapore Airlines Logo
8:45 am - 12:35 pmSEA-PER
35h 50m1 stop
$1,184Singapore Airlines
Find Deal
Fri, Jan 30 - Tue, Feb 17
Singapore Airlines Logo
6:40 am - 7:10 amPER-SEA
40h 30m1 stop
Singapore Airlines Logo
8:45 am - 12:35 pmSEA-PER
35h 50m1 stop
$1,235Singapore Airlines
Find Deal
Fri, Jan 30 - Tue, Feb 17
United Airlines Logo
11:45 pm - 9:12 pmPER-SEA
37h 27m3 stops
United Airlines Logo
8:45 am - 2:45 pmSEA-PER
38h 00m2 stops
$1,329United Airlines
Find Deal
Fri, Jan 30 - Tue, Feb 17
United Airlines Logo
11:45 pm - 9:12 pmPER-SEA
37h 27m3 stops
United Airlines Logo
9:20 am - 3:55 pmSEA-PER
38h 35m2 stops
$1,333United Airlines
Find Deal

Everything you should know

Top airlines
Japan Airlines
Cheapest • from $922 (round-trip)
Singapore Airlines
Best reviews • 8.1 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
7 weeks
in advance
Our data shows that travelers who book at least 7 weeks in advance save around 34% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
September
Cheapest • 15% price drop
June
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
$922
Typical prices: $1,164-1383
Japan Airlines
Wed 10/29Wed 11/5
PER - SEA • 2 stops
Cheapest one-way
$715
Typical prices: $726-959
Japan Airlines
Tue 1/20
PER - SEA • 2 stops
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Seattle!
Booking Insights

KAYAK's insights & trends for Perth to Seattle flights

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

How much is a round-trip flight from Perth to Seattle?

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Perth to Seattle, 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 Perth to Seattle is September, where tickets cost $1,138 (return) on average. On the other hand, the most expensive months are December and April, where the average cost of round-trip tickets is $1,592 and $1,453 respectively.

How far in advance should I book a flight from Perth to Seattle?

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

To get a below average price on the flight from Perth to Seattle, you should book around 7 weeks before departure, which saves you about 34% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 19 weeks before departure.

Good to know

Low seasonNovember
Cheapest flight$715
Best time to beat the crowds with an average 1% drop in price.
Most popular time to fly and prices are also 2% lower on average.
Flight from Perth to Seattle

When to book flights from Perth to Seattle

Are your dates flexible? Find out the best times to travel from Perth to Seattle 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 Perth to Seattle

  • What is the cheapest flight from Perth to Seattle?

    In the last 3 days, the lowest price for a flight from Perth to Seattle was $715 for a one-way ticket and $922 for a round-trip.

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

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

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

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

  • Which airline alliances offer flights from Perth to Seattle?

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

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

    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 Perth to Seattle.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle from Perth 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 Perth to Seattle?

    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 Seattle with an airline and back to Perth with another airline. Booking your flights between Perth and SEA 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 Perth to Seattle?

    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 Seattle from Perth up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Perth to Seattle

 
See real verified KAYAK customer reviews for airlines flying from Perth to Seattle. 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 Perth to Seattle? 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 1365 reviews
8.0Comfort
8.0Entertainment
7.7Food
8.6Crew
8.2Boarding
Airline reviews

Lounge a access was excellent as was the attentiveness and service from the crew as always. The food and drink supplied were of good quality. The entertainment system had a good selection and I liked the mapping system supplied. However the screen wild have been bigger and the operation a little smoother to navigate. The seats were barely comfortable, but adequate.

8.0 ExcellentAnthony, Aug 2025BNE - SIN
Read more Singapore Airlines reviews

Lounge a access was excellent as was the attentiveness and service from the crew as always. The food and drink supplied were of good quality. The entertainment system had a good selection and I liked the mapping system supplied. However the screen wild have been bigger and the operation a little smoother to navigate. The seats were barely comfortable, but adequate.

The staff on the plane were attentive and friendly. The frustration with the cabin crew was that we were served second to special diet people. And, we were in economy section. The boarding staff was mediocre. Got scolded for requesting to sit with spouse on 14 hours long flight home. Was told they cannot break up families for us. Didn’t understand how we were denied sitting together as we are husband and wife. After many words of exchange, we were accommodated. Cleaning crew did a horrible job! Bathrooms were unsanitary or dirty from beginning of flight! Didn’t expect sparkling as its economy, but did except decent.

Headwind delayed our flight which wasn’t the airlines fault

Horrendous. We upgraded and they took the money but cancelled one of our tickets. The recline action didn’t work on the seats for the flight from Singapore to London, pre booked meals but they seemed to have disappeared as well.. Phone customer service was horrendous. Took 5 phone calls and no fix. Craig at the airport was the only one who seemed to be able to get the ticket back.

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.

So happy I flew with Singapore Airlines. The customer service is top notch. I am terrified of flying and the staff made me feel so at ease. Will only fly Singapore internationally moving forward.

Food could have been better. Too many passengers getting up and down all the time.

Delayed 1hour due to storm still didn't get window seat for third flight despite paying £240 extra to book them

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

Flight from SFO did not include entertainment as it was not working the entire duration of the flight. Was informed that there would be a $350 voucher for the inconvenience. Uncertain how the voucher will be provided.

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

Information on your arrival and departure airports

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