SEA - PER

$658 Find Cheap Flights from Seattle to Perth - Compare and Save

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1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$1,168
Typical prices: $1,247-$1,624
Cathay Pacific
Fri 9/14Sat 9/22
SEA - PER • 1 stop
Cheapest one-way
$646
Typical prices: $606-$989
Cathay Pacific
Fri 1/12
SEA - PER • 1 stop
Nonstop flights
Not available
There are currently no direct flights between Seattle and Perth. You'll need to take a connecting flight to reach the destination.
Insights
Insights
When to travel
June
Cheapest • 5% price drop
November
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Hong Kong Intl (HKG)
Cheapest • Avg $1,442 (round-trip)
Singapore Changi (SIN)
Shortest trip • 24h 58m (one-way)
Insights
Insights
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Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Seattle to Perth (SEA-PER)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Seattle to Perth

Mon, Sep 14 - Tue, Sep 22
Cathay Pacific Logo
12:25 pm - 6:50 amSEA  Seattle/Tacoma Intl-PER Perth
27h 25m1 stop Hong Kong Intl
Cathay Pacific Logo
8:20 am - 10:05 amPER  Perth-SEA Seattle/Tacoma Intl
40h 45m1 stop Hong Kong Intl
$1,168Cathay Pacific
Mon, Oct 26 - Mon, Nov 23
Multiple Airlines Logo
12:10 am - 4:25 pmSEA  Seattle/Tacoma Intl-PER Perth
49h 15m2 stops Incheon Intl Ho Chi Minh City
Multiple Airlines Logo
9:10 pm - 7:10 amPER  Perth-SEA Seattle/Tacoma Intl
26h 00m1 stop Singapore Changi
$1,178Multiple Airlines
Mon, Sep 7 - Sun, Sep 13
Cathay Pacific Logo
12:25 pm - 10:40 pmSEA  Seattle/Tacoma Intl-PER Perth
43h 15m1 stop Hong Kong Intl
Cathay Pacific Logo
8:20 am - 10:20 amPER  Perth-SEA Seattle/Tacoma Intl
41h 00m1 stop Hong Kong Intl
$1,192Cathay Pacific
Tue, Oct 20 - Mon, Nov 9
Cathay Pacific Logo
11:45 am - 6:50 amSEA  Seattle/Tacoma Intl-PER Perth
28h 05m1 stop Hong Kong Intl
Cathay Pacific Logo
12:25 am - 9:10 amPER  Perth-SEA Seattle/Tacoma Intl
24h 45m1 stop Hong Kong Intl
$1,192Cathay Pacific
Sun, Dec 27 - Mon, Jan 25
Singapore Airlines Logo
8:45 am - 12:35 pmSEA  Seattle/Tacoma Intl-PER Perth
35h 50m1 stop Singapore Changi
Singapore Airlines Logo
1:20 am - 7:10 amPER  Perth-SEA Seattle/Tacoma Intl
21h 50m1 stop Singapore Changi
$1,311Singapore Airlines
Fri, Oct 23 - Mon, Nov 23
Qatar Airways Logo
4:25 pm - 6:45 pmSEA  Seattle/Tacoma Intl-PER Perth
35h 20m1 stop Doha Hamad Intl
Qatar Airways Logo
10:45 pm - 11:40 amPER  Perth-SEA Seattle/Tacoma Intl
28h 55m1 stop Doha Hamad Intl
$1,334Qatar Airways
Fri, Oct 23 - Tue, Nov 24
Qatar Airways Logo
4:25 pm - 6:45 pmSEA  Seattle/Tacoma Intl-PER Perth
35h 20m1 stop Doha Hamad Intl
Qatar Airways Logo
10:45 pm - 11:40 amPER  Perth-SEA Seattle/Tacoma Intl
28h 55m1 stop Doha Hamad Intl
$1,334Qatar Airways
Fri, Oct 23 - Wed, Nov 25
Qatar Airways Logo
4:25 pm - 6:45 pmSEA  Seattle/Tacoma Intl-PER Perth
35h 20m1 stop Doha Hamad Intl
Qatar Airways Logo
10:45 pm - 11:40 amPER  Perth-SEA Seattle/Tacoma Intl
28h 55m1 stop Doha Hamad Intl
$1,334Qatar Airways
Sun, Oct 25 - Tue, Nov 24
Singapore Airlines Logo
9:45 am - 12:35 pmSEA  Seattle/Tacoma Intl-PER Perth
35h 50m1 stop Singapore Changi
Singapore Airlines Logo
5:05 pm - 7:10 amPER  Perth-SEA Seattle/Tacoma Intl
30h 05m1 stop Singapore Changi
$1,486Singapore Airlines
Sun, Oct 25 - Mon, Nov 23
Singapore Airlines Logo
9:40 am - 12:35 pmSEA  Seattle/Tacoma Intl-PER Perth
35h 55m1 stop Singapore Changi
Singapore Airlines Logo
6:40 am - 7:05 amPER  Perth-SEA Seattle/Tacoma Intl
40h 25m1 stop Singapore Changi
$1,486Singapore Airlines
Booking Insights

Price, demand and travel trends for Seattle to Perth flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights from Seattle to Perth with more confidence.

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

Round-trip flights from Seattle to Perth start at $1,168. Prices are below average for this route right now, with typical round-trip fares ranging from $1,247 to $1,624. The lowest price found in the past 5 days was $1,168 on Cathay Pacific.

What's the cheapest day of the week to fly from Seattle to Perth?

Monday is the cheapest day of the week to fly from Seattle to Perth, it is 5% cheaper than the average day. Friday is the most expensive day with flight prices 51% higher than average. Based on deals found by KAYAK users in the last 12 months.

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Key details for Seattle to Perth flights

Low season

June

Cheapest flight

$646
Best time to beat the crowds with an average 5% drop in price.
Most popular time to fly with an average 34% 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

Your Seattle to Perth flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines and booking questions.

  • Which airports can I use when flying from Seattle to Perth?

    Flights from Seattle to Perth usually depart from Seattle/Tacoma Intl (SEA) and arrive at Perth (PER).

  • What cabin classes can I book on flights from Seattle to Perth?

    Three cabin classes are available on flights from Seattle to Perth:

    • Economy Class
    • Premium Economy Class
    • Business Class

  • Which airports do connecting flights from Seattle to Perth pass through?

    One-stop flights from Seattle to Perth most commonly connect through:

    • Singapore Changi (SIN) - 66% of one-stop connections
    • Doha Hamad Intl (DOH) - 22% of one-stop connections
    • Hong Kong Intl (HKG) - 6% of one-stop connections
    • Manila Ninoy Aquino Intl (MNL) - 6% of one-stop connections

    Singapore Changi (SIN) handles the largest share of one-stop connections on this route.

  • Can I save money by using flexible dates for flights from Seattle to Perth?

    Yes. Being flexible with your travel dates can save you up to 37% on the Seattle to Perth route. Monday is the cheapest departure day at $1,240 round-trip on average, while Friday is the most expensive at $1,963, a difference of $723. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • What popular places can I visit in Perth?

    Some of the most popular sights in Perth are Elizabeth Quay, RAC Arena and Hay Street Mall. These are among the most viewed places in Perth on KAYAK.

  • How long is a flight from Seattle to Perth?

    A nonstop flight from Seattle to Perth takes 0h 00m, covering 9,235 miles.

  • What are the earliest and latest flights from Seattle to Perth?

    These are the earliest and latest flight times available from Seattle to Perth:

    • Earliest: departs at 12:00 am and lands at 12:00 am
    • Latest: departs at 12:00 am and lands at 12:00 am.

    The flight takes about 0h 00m.

  • Do I need a passport to fly from Seattle to Perth?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • How are flight prices from Seattle to Perth looking right now?

    One-way fares from Seattle to Perth are currently lower than usual. Average one-way flight prices are about $742, which is 6% below the typical average for this route.

  • How much time can I save by choosing a different layover airport from Seattle to Perth?

    Flying via Singapore Changi (SIN) gives the shortest average 1-stop total travel time at 24h 58m, compared with 28h 49m via Hong Kong Intl (HKG) and 30h 28m via Doha Hamad Intl (DOH).

  • What is the time difference between Seattle and Perth?

    Perth is 15 hours ahead of Seattle (Western Australia Time vs Pacific Time). Plan for the time shift when scheduling connections or first-day activities.

  • What car rental options are available at Perth Airport (PER)?

    Perth Airport (PER) hosts 5 major car rental companies, with daily rates starting from around $12 for economy cars. Top options include:
    · EverythingFleet
    · East Coast Car Rentals
    · Europcar
    · Ace Rental Cars
    · Bargain Car Rentals

  • How much should I expect to pay for a Seattle to Perth flight?

    Round-trip flights from Seattle to Perth range from $1,247 to $1,624, with an average of $1,296 over the past 12 months. Anything below $1,247 counts as a good deal.

Your guide to booking Seattle to Perth flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates can be flexible, aim for a Monday departure instead of Friday. On this route, Monday flights average $1,240 - about $723 less than Friday (37% savings) based on the last 12 months.
  • If you can choose when to travel, plan your Seattle to Perth trip for June. Fares historically average $1,231 round-trip in that month - typically $636 less than the most expensive month, which is December (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Perth Airport.
    - Sanno Marracoonda Perth Airport Hotel

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

Information on your arrival and departure airports

Seattle (SEA)
Perth (PER)