SEA - PER

$649 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 10/21. 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
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$1,242
Typical prices: $1,270-$1,375
Qatar Airways
Mon 8/17Mon 9/14
SEA - PER • 1 stop
Cheapest one-way
$649
Typical prices: $641-$1,186
Multiple Airlines
Wed 10/21
SEA - PER • 3 stops
Top airlines
Cheapest • from $1,242 (round-trip)
Best reviews • 8.2 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Seattle and Perth. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $1,954 (round-trip)
Shortest trip • 26h 17m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 20% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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 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

Mon, Aug 17 - Mon, Sep 14
Qatar Airways Logo
4:25 pm - 6:35 pm
SEA
-
PER
35h 10m
1 stop
Qatar Airways Logo
10:45 pm - 12:45 pm
PER
-
SEA
29h 00m
1 stop
$1,242Qatar Airways
Mon, Aug 17 - Mon, Sep 14
Qatar Airways Logo
4:25 pm - 6:35 pm
SEA
-
PER
35h 10m
1 stop
Qatar Airways Logo
10:45 pm - 12:45 pm
PER
-
SEA
29h 00m
1 stop
$1,244Qatar Airways
Sun, Nov 1 - Mon, Nov 23
Qatar Airways Logo
3:50 pm - 6:45 pm
SEA
-
PER
34h 55m
1 stop
Qatar Airways Logo
10:45 pm - 11:40 am
PER
-
SEA
28h 55m
1 stop
$1,253Qatar Airways
Mon, Aug 17 - Mon, Sep 14
Multiple Airlines Logo
4:25 pm - 6:35 pm
SEA
-
PER
35h 10m
1 stop
Multiple Airlines Logo
10:45 pm - 8:32 pm
PER
-
SEA
36h 47m
2 stops
$1,266Multiple Airlines
Mon, Aug 17 - Mon, Sep 14
Multiple Airlines Logo
4:25 pm - 6:35 pm
SEA
-
PER
35h 10m
1 stop
Multiple Airlines Logo
10:45 pm - 8:32 pm
PER
-
SEA
36h 47m
2 stops
$1,267Multiple Airlines
Wed, Oct 14 - Sat, Nov 14
Qatar Airways Logo
4:25 pm - 6:35 pm
SEA
-
PER
35h 10m
1 stop
Qatar Airways Logo
10:45 pm - 11:40 am
PER
-
SEA
28h 55m
1 stop
$1,281Qatar Airways
Mon, Nov 2 - Thu, Nov 19
Philippine Airlines Logo
11:55 pm - 7:15 am
SEA
-
PER
39h 20m
1 stop
Philippine Airlines Logo
8:30 am - 6:35 pm
PER
-
SEA
26h 05m
1 stop
$1,283Philippine Airlines
Mon, Nov 2 - Sat, Nov 21
Qatar Airways Logo
3:50 pm - 6:45 pm
SEA
-
PER
34h 55m
1 stop
Qatar Airways Logo
10:45 pm - 11:40 am
PER
-
SEA
28h 55m
1 stop
$1,293Qatar Airways
Thu, Oct 1 - Sun, Oct 18
Multiple Airlines Logo
4:25 pm - 6:35 pm
SEA
-
PER
35h 10m
1 stop
Multiple Airlines Logo
10:45 pm - 9:25 pm
PER
-
SEA
37h 40m
2 stops
$1,307Multiple Airlines
Sat, Oct 17 - Fri, Oct 30
Singapore Airlines Logo
10:15 am - 12:30 pm
SEA
-
PER
35h 15m
1 stop
Singapore Airlines Logo
1:15 am - 8:10 am
PER
-
SEA
21h 55m
1 stop
$1,315Singapore Airlines
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 June, where tickets cost $1,231 (return) on average. On the other hand, the most expensive months are July and December, where the average cost of round-trip tickets is $2,016 and $1,835 respectively.

Good to know

Low seasonJanuary
Cheapest flight$649
Best time to beat the crowds with an average 2% drop in price.
Most popular time to fly with an average 7% 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 5 days, the lowest price for a flight from Seattle to Perth was $649 for a one-way ticket and $1,242 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?

    Star Alliance is the only airline alliance operating flights between Seattle and Perth.

  • 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 airline flying 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.
8.2
Singapore AirlinesOverall score based on 1547 reviews
8.0Comfort
8.3Boarding
8.6Crew
7.8Food
8.1Entertainment
Airline reviews

I had selected seats together for my family of three when I first booked my tickets in February. However, I realized only when I checked in at the airport that the seats I had selected were no longer assigned to us and we were completely scattered across three different middle seats instead of being seated together! After requesting the Singapore staff to have us seated together on a full flight, they managed to find something but it was right next to the rest rooms and the whole journey of 15+ hours was really unpleasant. They said that the seat selection isn't locked and the airline can reallocate the seats anytime. No one ever told us this and it was a terribly unpleasant surprise. Will avoid Kayak/underpricer and Singapore in future

2.0 MediocreAnonymous, Jun 2026
SFO - SIN
Read more Singapore Airlines reviews

I had selected seats together for my family of three when I first booked my tickets in February. However, I realized only when I checked in at the airport that the seats I had selected were no longer assigned to us and we were completely scattered across three different middle seats instead of being seated together! After requesting the Singapore staff to have us seated together on a full flight, they managed to find something but it was right next to the rest rooms and the whole journey of 15+ hours was really unpleasant. They said that the seat selection isn't locked and the airline can reallocate the seats anytime. No one ever told us this and it was a terribly unpleasant surprise. Will avoid Kayak/underpricer and Singapore in future

The friendliness of the attendants, and the quality of the service.

Flight attendants were awesome! Very helpful and patients. Some food were good but maybe not serving fish that kinda make the whole aircraft smell fishy. The “fried pork” was tasty but too much skin so it doesnt taste that great.

Very concerned with guest comforts going out of their way to accommodate special dietary needs when the guests hadn’t pre-ordered.

Clean modern comfortable. Food could have been better, I only ate breakfast I wish they wouldn’t wake sleeping passengers who would rather sleep through dinner. No tea or coffee for breakfast

Food was terrible , uncomfortable seats, WiFi did not work, will never fly Singapore again.

I had ordered vegetarian food. What I was presented was extremely dissatisfying and not up to the mark. I pretty much did not eat entire 19 hours. For.an airline voted as best in business, it was extremely disappointing. Seats were not comfortable to sleep. Entertainment system didn’t have much choice. WiFi didn’t work for more than half the time. Cabin crew were also difficult to understand. A bit of diversity like Emirates crew would go a long way.

A little more room from the reclining seat in the front of me.

I loved the full Taylor Swift selection but felt that the other selections were limited, didn’t span the popular music eras nor a wide enough range of music genres. BUT the seat and bed were GREAT (it was wide, long enough, had great storage, firm enough to uphold body postural comfort). Outstanding crew and really great food - gourmet innovative dim sum breakfast so different from the boring standard fare offered by many other business class products.

They ran out of the second choice of food was stuck with fish

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

Information on your arrival and departure airports