SEA - SYD

$697 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
$1,385
Typical prices: $1,467-$1,982
Multiple Airlines
Fri 9/11Sat 17/11
SEA - SYD • 1 stop
Cheapest one-way flight
$697
Typical prices: $829-$1,078
Philippine Airlines
Thu 5/4
SEA - SYD • 1 stop
Direct flights
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
in advance
Our data shows that travellers who book at least 6 weeks in advance save around 23% compared to booking last minute.
Insights
Insights
When to travel
Cheapest • 9% price drop
Most popular
Good to know
+1
Good to know
+1
Top stopover airports
Cheapest • Avg $1,215 (return)
Shortest trip • 18h 37m (one-way)
Insights
Insights
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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

Mon, 9 Nov - Tue, 17 Nov
Multiple Airlines Logo
07:00 - 19:45SEA  Seattle/Tacoma Intl-SYD Sydney Kingsford Smith
17h 45m1 stop Honolulu
Multiple Airlines Logo
21:40 - 21:25SYD  Sydney Kingsford Smith-SEA Seattle/Tacoma Intl
18h 45m1 stop Honolulu
$1,385Multiple Airlines
Mon, 9 Nov - Tue, 17 Nov
Air Canada Logo
15:15 - 14:40SEA  Seattle/Tacoma Intl-SYD Sydney Kingsford Smith
28h 25m2 stops Vancouver Intl Brisbane
Air Canada Logo
11:20 - 09:32SYD  Sydney Kingsford Smith-SEA Seattle/Tacoma Intl
17h 12m1 stop Vancouver Intl
$1,405Air Canada
Mon, 9 Nov - Tue, 17 Nov
Multiple Airlines Logo
07:00 - 19:45SEA  Seattle/Tacoma Intl-SYD Sydney Kingsford Smith
17h 45m1 stop Honolulu
Multiple Airlines Logo
21:40 - 06:00SYD  Sydney Kingsford Smith-SEA Seattle/Tacoma Intl
27h 20m2 stops Honolulu Kahului
$1,412Multiple Airlines
Wed, 24 Feb - Thu, 11 Mar
Air Canada Logo
15:15 - 09:35SEA  Seattle/Tacoma Intl-SYD Sydney Kingsford Smith
23h 20m1 stop Vancouver Intl
Air Canada Logo
11:20 - 18:20SYD  Sydney Kingsford Smith-SEA Seattle/Tacoma Intl
26h 00m1 stop Vancouver Intl
$1,427Air Canada
Fri, 26 Feb - Mon, 15 Mar
Air Canada Logo
19:05 - 09:35SEA  Seattle/Tacoma Intl-SYD Sydney Kingsford Smith
19h 30m1 stop Vancouver Intl
Air Canada Logo
11:20 - 21:55SYD  Sydney Kingsford Smith-SEA Seattle/Tacoma Intl
28h 35m1 stop Vancouver Intl
$1,434Air Canada
Tue, 9 Feb - Sun, 28 Feb
Air Canada Logo
15:15 - 09:35SEA  Seattle/Tacoma Intl-SYD Sydney Kingsford Smith
23h 20m1 stop Vancouver Intl
Air Canada Logo
11:20 - 09:32SYD  Sydney Kingsford Smith-SEA Seattle/Tacoma Intl
17h 12m1 stop Vancouver Intl
$1,437Air Canada
Mon, 1 Feb - Mon, 8 Feb
Air Canada Logo
15:15 - 09:35SEA  Seattle/Tacoma Intl-SYD Sydney Kingsford Smith
23h 20m1 stop Vancouver Intl
Air Canada Logo
11:20 - 14:37SYD  Sydney Kingsford Smith-SEA Seattle/Tacoma Intl
22h 17m1 stop Vancouver Intl
$1,438Air Canada
Tue, 10 Nov - Tue, 17 Nov
Air Canada Logo
10:10 - 09:35SEA  Seattle/Tacoma Intl-SYD Sydney Kingsford Smith
28h 25m1 stop Vancouver Intl
Air Canada Logo
11:20 - 14:32SYD  Sydney Kingsford Smith-SEA Seattle/Tacoma Intl
22h 12m1 stop Vancouver Intl
$1,440Air Canada
Thu, 8 Apr - Thu, 22 Apr
Philippine Airlines Logo
23:55 - 09:45SEA  Seattle/Tacoma Intl-SYD Sydney Kingsford Smith
40h 50m1 stop Manila Ninoy Aquino Intl
Philippine Airlines Logo
11:35 - 19:35SYD  Sydney Kingsford Smith-SEA Seattle/Tacoma Intl
25h 00m1 stop Manila Ninoy Aquino Intl
$1,443Philippine Airlines
Wed, 24 Feb - Thu, 11 Mar
Air Canada Logo
15:15 - 09:35SEA  Seattle/Tacoma Intl-SYD Sydney Kingsford Smith
23h 20m1 stop Vancouver Intl
Air Canada Logo
09:00 - 14:35SYD  Sydney Kingsford Smith-SEA Seattle/Tacoma Intl
24h 35m2 stops Brisbane Vancouver Intl
$1,445Air 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.

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 9% cheaper than the average day, while Thursday is the most expensive, with prices 10% higher.

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

•August is the cheapest month to fly from Seattle to Sydney at $1,490 return.
•December ($2,607) and January ($1,840) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 74% 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 23% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Key details for Seattle to Sydney flights

Low season

February

Cheapest flight

$697
Beat the crowds with an average 33% drop in traveller numbers.
The most popular month to fly with an average 35% 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 $1,467 to $1,982, with an average of $1,646 over the past 12 months. Anything below $1,467 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 15% above the $1,646 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 $752, 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:

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

  • 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:

    • Vancouver Intl (YVR) – 29% of one-stop connections
    • Los Angeles (LAX) – 27% of one-stop connections
    • Honolulu (HNL) – 24% of one-stop connections
    • Tokyo Haneda (HND) – 9% 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 18% on flights from Seattle to Sydney. Monday is the cheapest departure day at $1,507 return on average, while Thursday is the most expensive at $1,817, a difference of $310.

    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 37m, compared to 18h 47m via San Francisco (SFO) and 19h 57m 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 Thursday. On this route, Monday flights average $1,507, about $310 less than Thursday fares (17% 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 23% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your Seattle to Sydney trip for August. Fares historically average $1,490 return in that month – typically $1,117 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