Australia
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SEA - SYD

$706 Find Cheap Flights from Seattle to Sydney – Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest return flight
$1,390
Typical prices: $1,267-$1,872
Air Canada
Thu 8/11Thu 22/11
SEA - SYD • 1 stop
Cheapest one-way flight
$706
Typical prices: $732-$1,010
Multiple Airlines
Fri 16/11
SEA - SYD • 1 stop
Direct flights
Not available
There are currently no direct flights between Seattle and Sydney. You'll need to take a connecting flight to reach the destination.
Insights
Insights
When to book
6 weeks
in advance
Our data shows that travellers who book at least 6 weeks in advance save around 25% compared to booking last minute.
Insights
Insights
When to travel
November
Cheapest • 15% price drop
November
Most popular
Good to know
+1
Good to know
+1
Top stopover airports
Manila Ninoy Aquino Intl (MNL)
Cheapest • Avg $1,217 (return)
Vancouver Intl (YVR)
Shortest trip • 18h 41m (one-way)
Insights
Insights
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KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you enjoy your trip to Sydney!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Seattle to Sydney (SEA-SYD)

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

Recent return flight deals from Seattle to Sydney

Sun, 8 Nov - Sun, 22 Nov
Air Canada Logo
10:10 - 09:35SEA  Seattle/Tacoma Intl-SYD Sydney Kingsford Smith
28h 25m1 stop Vancouver Intl
Air Canada Logo
08:30 - 09:27SYD  Sydney Kingsford Smith-SEA Seattle/Tacoma Intl
19h 57m2 stops Brisbane Vancouver Intl
$1,390Air Canada
Mon, 19 Oct - Fri, 23 Oct
Multiple Airlines Logo
19:15 - 11:40SEA  Seattle/Tacoma Intl-SYD Sydney Kingsford Smith
22h 25m2 stops Vancouver Intl Brisbane
Multiple Airlines Logo
10:20 - 10:05SYD  Sydney Kingsford Smith-SEA Seattle/Tacoma Intl
17h 45m1 stop Vancouver Intl
$1,401Multiple Airlines
Sun, 8 Nov - Sun, 22 Nov
Air Canada Logo
19:05 - 16:40SEA  Seattle/Tacoma Intl-SYD Sydney Kingsford Smith
26h 35m2 stops Vancouver Intl Brisbane
Air Canada Logo
08:30 - 09:27SYD  Sydney Kingsford Smith-SEA Seattle/Tacoma Intl
19h 57m2 stops Brisbane Vancouver Intl
$1,417Air Canada
Mon, 19 Oct - Fri, 23 Oct
Multiple Airlines Logo
19:15 - 11:40SEA  Seattle/Tacoma Intl-SYD Sydney Kingsford Smith
22h 25m2 stops Vancouver Intl Brisbane
Multiple Airlines Logo
07:00 - 10:05SYD  Sydney Kingsford Smith-SEA Seattle/Tacoma Intl
21h 05m2 stops Brisbane Vancouver Intl
$1,418Multiple Airlines
Mon, 26 Oct - Sun, 8 Nov
Air Canada Logo
19:05 - 08:35SEA  Seattle/Tacoma Intl-SYD Sydney Kingsford Smith
19h 30m1 stop Vancouver Intl
Air Canada Logo
11:20 - 09:32SYD  Sydney Kingsford Smith-SEA Seattle/Tacoma Intl
17h 12m1 stop Vancouver Intl
$1,425Air Canada
Mon, 26 Oct - Sun, 8 Nov
Air Canada Logo
19:05 - 08:35SEA  Seattle/Tacoma Intl-SYD Sydney Kingsford Smith
19h 30m1 stop Vancouver Intl
Air Canada Logo
11:20 - 09:32SYD  Sydney Kingsford Smith-SEA Seattle/Tacoma Intl
17h 12m1 stop Vancouver Intl
$1,427Air Canada
Sun, 18 Oct - Mon, 2 Nov
Air Canada Logo
10:50 - 08:20SEA  Seattle/Tacoma Intl-SYD Sydney Kingsford Smith
27h 30m1 stop Vancouver Intl
Air Canada Logo
11:20 - 09:32SYD  Sydney Kingsford Smith-SEA Seattle/Tacoma Intl
17h 12m1 stop Vancouver Intl
$1,437Air Canada
Wed, 17 Mar - Thu, 25 Mar
Philippine Airlines Logo
22:30 - 09:50SEA  Seattle/Tacoma Intl-SYD Sydney Kingsford Smith
41h 20m1 stop Manila Ninoy Aquino Intl
Philippine Airlines Logo
11:30 - 19:45SYD  Sydney Kingsford Smith-SEA Seattle/Tacoma Intl
26h 15m1 stop Manila Ninoy Aquino Intl
$1,438Philippine Airlines
Tue, 17 Nov - Tue, 24 Nov
Air Canada Logo
15:15 - 09:35SEA  Seattle/Tacoma Intl-SYD Sydney Kingsford Smith
23h 20m1 stop Vancouver Intl
Air Canada Logo
11:20 - 09:27SYD  Sydney Kingsford Smith-SEA Seattle/Tacoma Intl
17h 07m1 stop Vancouver Intl
$1,440Air Canada
Mon, 1 Mar - Wed, 17 Mar
Air Canada Logo
10:10 - 09:35SEA  Seattle/Tacoma Intl-SYD Sydney Kingsford Smith
28h 25m1 stop Vancouver Intl
Air Canada Logo
10:20 - 09:15SYD  Sydney Kingsford Smith-SEA Seattle/Tacoma Intl
16h 55m1 stop Vancouver Intl
$1,441Air Canada
Booking Insights

Price, demand, and travel trends for Seattle to Sydney flights

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

How much is a return flight from Seattle to Sydney?

Return flights from Seattle to Sydney typically range from $1,267 to $1,872. The lowest price found in the past 5 days was $1,390 on Air Canada.

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

Based on deals KAYAK users found in the last 12 months, Monday is the cheapest day of the week to fly from Seattle to Sydney. It’s 8% cheaper than the average day, while Friday is the most expensive, with prices 10% higher.

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

•November is the cheapest month to fly from Seattle to Sydney at $1,331 return.
•December ($2,480) and July ($1,834) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 86% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are flights from Seattle to Sydney the cheapest?

Flights from Seattle to Sydney are cheapest 6 weeks before departure. Booking in this window typically costs about 25% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Find deals

Key details for Seattle to Sydney flights

Low season

June

Cheapest flight

$706
Beat the crowds with an average 26% drop in traveller numbers.
The most popular month to fly with an average 17% increase in traveller numbers.
One-way flight from Seattle to Sydney

When to book flights from Seattle to Sydney

Are your dates flexible? Find out the best times to travel from Seattle to Sydney based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price

Your Seattle to Sydney flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines, and booking tips.

  • Which cabin classes can I book on flights from Seattle to Sydney?

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

    • Economy class
    • Premium Economy Class
    • Business Class

  • How long is a flight from Seattle to Sydney?

    A direct flight from Seattle to Sydney takes 00m, covering 20,057 km.

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

    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 much should I expect to pay for a Seattle to Sydney flight?

    Return flights from Seattle to Sydney range from $1,267 to $1,872, with an average of $1,574 over the past 12 months. Anything below $1,267 counts as a good deal.

  • How expensive are last-minute Seattle to Sydney flights?

    Last-minute fares on this route (booked within two weeks of departure) run 17% above the $1,574 route average. Book 6 weeks before departure for the lowest fares.

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

    One-way fares from Seattle to Sydney are currently lower than usual. Average one-way flight prices are about $735, which is 19% below the typical average for this route.

  • Which car hire options are available at Sydney Kingsford Smith Airport (SYD)?

    Sydney Kingsford Smith Airport (SYD) hosts 5 major car hire companies, with daily rates starting from around $15 for economy cars. Top options include:

    • Bargain Car Rentals
    • East Coast Car Rentals
    • EverythingFleet
    • YESDRIVE CAR RENTAL
    • No Birds

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

    Flights from Seattle to Sydney usually depart from Seattle/Tacoma Intl (SEA) and arrive at Sydney Kingsford Smith (SYD).

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

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

    • Los Angeles (LAX) – 29% of one-stop connections
    • Vancouver Intl (YVR) – 26% of one-stop connections
    • Honolulu (HNL) – 24% of one-stop connections
    • San Francisco (SFO) – 11% of one-stop connections

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

    Yes. Flexible dates can save you up to 17% on flights from Seattle to Sydney. Monday is the cheapest departure day at $1,457 return on average, while Friday is the most expensive at $1,737, a difference of $280.

    KAYAK's flexible dates feature shows options up to three days before and after your selected dates, making it easier to compare nearby fares.

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

    Flying via Vancouver Intl (YVR) gives the shortest average 1-stop total travel time of 18h 41m, compared to 18h 55m via San Francisco (SFO) and 20h 10m via Los Angeles (LAX).

  • What is the time difference between Seattle and Sydney?

    Sydney is 18 hours ahead of Seattle (Eastern Australia Time vs Pacific Time). Plan for the time shift when scheduling connections or first-day activities.

  • What popular places can I visit in Sydney?

    Some of the most popular sights in Sydney are Sydney Opera House, Star Casino, and Capitol Theatre. These are among the most viewed places in Sydney on KAYAK.

  • Are there direct flights from Seattle to Sydney?

    Yes, there are direct flights from Seattle/Tacoma International (SEA) to Sydney/Kingsford Smith (SYD). There is a range of direct flights to choose from, such as Delta, Hawaiian, Fiji Airways, and many more. However, there are several indirect flights to choose from if you are looking for a cheaper flight.

  • Are there any hotels in Sydney Airport (SYD)?

    Yes, there are multiple hotels near and at the airport in Sydney that also provides shuttle services to and from the airport. If you can't stay outside, look no further than the hotels at the airport. These include Rydges Sydney Airport Hotel, Citadines Connect Airport Hotel, and Travelodge Hotel Sydney Airport.

  • What is the best way to get to Sydney CBD from SYD?

    There are several ways to get to Sydney CBD from the airport. You can use a train which will take about 17min or rideshare app services which will take 20min. Alternatively, you can take public transport, a bus which will take 28mins.

  • What is the best way to get to SEA from downtown Seattle?

    It takes about 20min to get to SEA from downtown Seattle by bus. You can order a taxi or use a shuttle. The shuttle runs from the terminals at regular intervals between SEA and downtown.

Your guide to booking Seattle to Sydney flights

Get tips on when to book, when to fly, and what to know before your trip.
  • If your dates are flexible, aim for a Monday departure and avoid flying on Friday. On this route, Monday flights average $1,457, about $280 less than Friday fares (16% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 6 weeks before you fly. On this route, that window historically saves about 25% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your Seattle to Sydney trip for November. Fares historically average $1,331 return in that month – typically $1,150 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 Sydney Kingsford Smith Airport.

    • Travelodge Hotel Sydney Airport
    • Rydges Sydney Airport Hotel
    • ibis budget Sydney Airport
  • If you are flying out of Seattle/Tacoma International Airport (SEA) and would like to park your car, SEA offers various options at reasonable prices, depending on how long you plan to park. If you are planning for long-term parking, Park n Jet, located 1mile from Seattle/Tacoma International Airport, is the best choice. For short-term parking, you can use Aeroparking, which is located 1.2 miles from the airport. Also, there is an airport shuttle dropping passengers at each terminal.
  • If you are traveling with kids from Seattle/Tacoma International Airport (SEA) to Sydney Kingsford Smith International Airport (SYD), there are multiple play areas and food courts to enjoy before your flight to SYD. The play areas are located across Delta Sky Lounge between Central terminals and Gate A. They are equipped with many toys for kids.
  • If you are looking to spend the night close to the airport for an early flight, look no further than the best hotels in Seattle, which offer several excellent amenities. Most of them are easily accessible from the airport. Some of the hotels include Double Tree by Hilton, which is located 1.2 miles from the airport, Hampton Inn & Suites Seattle, located at 1.3 miles, and Red Lion Hotel Seattle Airport, which is 1 mile from the airport.
  • SYD offers transport services out of the airport for passengers on a tight schedule upon request. To use these services, call your airline to inform them how best they can help ahead of time. You can choose between a shared ride or express reservation, which you can book online in advance.
  • It is recommended that you arrive a few hours before your trip if traveling out of SEA. If you go to the SEA website ahead of time, you can view the security line wait times to plan ahead of time.

More options for your flight from Seattle to Sydney

Complete your trip to Sydney with a hotel stay or car hire

Car hire in Sydney
Hotels in Sydney
Holidays in Sydney