PER - SEA

$680 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 8/3. 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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Flights 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

Tue, Jul 22 - Wed, Jul 30
Japan Airlines Logo
12:25 pm - 10:35 amPER-SEA
37h 10m2 stops
Japan Airlines Logo
1:30 pm - 12:40 amSEA-PER
44h 10m2 stops
$953Japan Airlines
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Tue, Jul 22 - Wed, Jul 30
Japan Airlines Logo
12:25 pm - 10:35 amPER-SEA
37h 10m2 stops
Japan Airlines Logo
1:30 pm - 12:40 amSEA-PER
44h 10m2 stops
$993Japan Airlines
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Tue, Jul 22 - Tue, Jul 29
Logo
9:55 pm - 4:35 pmPER-SEA
33h 40m2 stops
Logo
1:15 am - 8:40 pmSEA-PER
28h 25m2 stops
$1,110
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Sat, Jul 26 - Sat, Aug 2
ANA Logo
9:35 pm - 3:46 pmPER-SEA
33h 11m2 stops
ANA Logo
7:00 am - 8:00 pmSEA-PER
46h 00m2 stops
$1,132ANA
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Sat, Jul 26 - Sat, Aug 2
Logo
3:50 pm - 9:40 pmPER-SEA
44h 50m2 stops
Logo
8:15 am - 2:55 pmSEA-PER
39h 40m2 stops
$1,285
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Tue, Jul 22 - Wed, Jul 30
United Airlines Logo
11:45 pm - 1:25 pmPER-SEA
28h 40m2 stops
United Airlines Logo
8:57 am - 11:40 amSEA-PER
35h 43m3 stops
$1,491United Airlines
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Tue, Jul 22 - Wed, Jul 30
United Airlines Logo
11:45 pm - 1:25 pmPER-SEA
28h 40m2 stops
United Airlines Logo
8:57 am - 2:40 pmSEA-PER
38h 43m3 stops
$1,492United Airlines
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Fri, Aug 1 - Sat, Sep 13
Singapore Airlines Logo
1:10 am - 8:45 amPER-SEA
22h 35m1 stop
Singapore Airlines Logo
6:05 pm - 2:40 pmSEA-PER
29h 35m2 stops
$1,819Singapore Airlines
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Sat, Aug 2 - Sat, Sep 13
Singapore Airlines Logo
6:25 am - 8:45 amPER-SEA
41h 20m1 stop
Singapore Airlines Logo
10:15 am - 11:55 pmSEA-PER
22h 40m1 stop
$1,820Singapore Airlines
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Mon, Jun 23 - Thu, Jul 17
ANA Logo
9:35 pm - 4:47 pmPER-SEA
34h 12m2 stops
ANA Logo
7:00 am - 8:00 pmSEA-PER
46h 00m2 stops
$2,052ANA
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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.

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 February, where tickets cost $1,123 (return) on average. On the other hand, the most expensive months are December and April, where the average cost of round-trip tickets is $1,818 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 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 19 weeks before departure.

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Good to know

Low seasonNovember
High seasonJune
Cheapest flight$680
Best time to beat the crowds with an average 5% 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 $680 for a one-way ticket and $953 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 oneworld 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.

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 1302 reviews
7.7Food
8.0Entertainment
8.2Boarding
7.9Comfort
8.6Crew
Airline reviews

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.

2.0 MediocreKylie, Apr 2025CNS - SIN
Read more Singapore Airlines reviews

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.

Excelent service and plenty of food and drinks during the flight. Flight crew very attentive to our needs. Leg room between rows are very disappointing.

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.

Loved the airline with the exception of their carry on limitations. They enforce a strict 7 kilo limit for carry on baggage which is ridiculous. We traveled from SFO to SIN with carry on with no difficulty yet when we checked in Delhi they forced us to check the carry on bags. The weight of our carry on bags were 11 and 12 kilos and while they exceeded the limitations set by Singapore Airlines they were well under weight limitations set by may other carriers. Interestingly my wife and I were each allowed two 22 KG bags to check in addition to the 7 kg carry on for a total weight of 102 KG's. Our total weight with the one bag we planned to check and our two carry ons was 46 kgs.

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.

It was an average flight. I would have expected more from this airline. Food, seats, service, etc was just average. I just give them some extra points for offering free WiFi on board with just a Krisflyer account.

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

Information on your arrival and departure airports

Perth (PER)
Seattle (SEA)

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