SEA - SYD

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

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Everything you should know

Cheapest round-trip
C$ 1,513
Typical prices: C$ 1,429-C$ 1,931
Philippine Airlines
Thu 22/2Sat 3/3
SEA - SYD • 1 stop
Cheapest one-way flights
C$ 706
Typical prices: C$ 808-C$ 1,050
Alaska Airlines
Mon 3/12
SEA - SYD • 2 stops
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 23% compared to booking last minute.
Insights
Insights
When to travel
August
Cheapest • 9% price drop
September
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Manila Ninoy Aquino Intl (MNL)
Cheapest • Avg C$ 1,184 (round-trip)
Vancouver Intl (YVR)
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 round-trip flight deals from Seattle to Sydney

Mon, 22 Feb - Wed, 3 Mar
Philippine Airlines Logo
9:30 p.m. - 9:50 a.m.SEA  Seattle/Tacoma Intl-SYD Sydney Kingsford Smith
41h 20m1 stop Manila Ninoy Aquino Intl
Philippine Airlines Logo
11:30 a.m. - 6:45 p.m.SYD  Sydney Kingsford Smith-SEA Seattle/Tacoma Intl
26h 15m1 stop Manila Ninoy Aquino Intl
C$ 1,513Philippine Airlines
Mon, 1 Feb - Tue, 9 Feb
Multiple Airlines Logo
7:00 a.m. - 7:45 p.m.SEA  Seattle/Tacoma Intl-SYD Sydney Kingsford Smith
17h 45m1 stop Honolulu
Multiple Airlines Logo
9:40 p.m. - 8:20 p.m.SYD  Sydney Kingsford Smith-SEA Seattle/Tacoma Intl
17h 40m1 stop Honolulu
C$ 1,517Multiple Airlines
Sat, 14 Nov - Fri, 20 Nov
Alaska Airlines Logo
10:07 a.m. - 6:25 a.m.SEA  Seattle/Tacoma Intl-SYD Sydney Kingsford Smith
25h 18m1 stop Los Angeles
Alaska Airlines Logo
11:15 a.m. - 11:03 a.m.SYD  Sydney Kingsford Smith-SEA Seattle/Tacoma Intl
18h 48m1 stop Los Angeles
C$ 1,527Alaska Airlines
Sat, 14 Nov - Fri, 20 Nov
Alaska Airlines Logo
8:45 a.m. - 6:25 a.m.SEA  Seattle/Tacoma Intl-SYD Sydney Kingsford Smith
26h 40m2 stops Portland Los Angeles
Alaska Airlines Logo
11:15 a.m. - 11:03 a.m.SYD  Sydney Kingsford Smith-SEA Seattle/Tacoma Intl
18h 48m1 stop Los Angeles
C$ 1,533Alaska Airlines
Tue, 16 Feb - Fri, 26 Feb
Alaska Airlines Logo
11:20 a.m. - 6:25 a.m.SEA  Seattle/Tacoma Intl-SYD Sydney Kingsford Smith
24h 05m2 stops Portland Los Angeles
Alaska Airlines Logo
11:15 a.m. - 3:00 p.m.SYD  Sydney Kingsford Smith-SEA Seattle/Tacoma Intl
22h 45m2 stops Los Angeles Portland
C$ 1,540Alaska Airlines
Thu, 12 Nov - Sun, 15 Nov
Alaska Airlines Logo
6:00 a.m. - 6:25 a.m.SEA  Seattle/Tacoma Intl-SYD Sydney Kingsford Smith
29h 25m1 stop Los Angeles
Alaska Airlines Logo
9:25 p.m. - 8:22 a.m.SYD  Sydney Kingsford Smith-SEA Seattle/Tacoma Intl
29h 57m1 stop San Francisco
C$ 1,545Alaska Airlines
Tue, 9 Feb - Sun, 28 Feb
Alaska Airlines Logo
12:35 p.m. - 6:25 a.m.SEA  Seattle/Tacoma Intl-SYD Sydney Kingsford Smith
22h 50m2 stops Portland Los Angeles
Alaska Airlines Logo
11:15 a.m. - 4:41 p.m.SYD  Sydney Kingsford Smith-SEA Seattle/Tacoma Intl
24h 26m2 stops Los Angeles Portland
C$ 1,547Alaska Airlines
Wed, 17 Feb - Fri, 26 Feb
Alaska Airlines Logo
3:00 p.m. - 6:25 a.m.SEA  Seattle/Tacoma Intl-SYD Sydney Kingsford Smith
20h 25m1 stop Los Angeles
Alaska Airlines Logo
11:15 a.m. - 11:51 a.m.SYD  Sydney Kingsford Smith-SEA Seattle/Tacoma Intl
19h 36m1 stop Los Angeles
C$ 1,555Alaska Airlines
Tue, 9 Feb - Sun, 28 Feb
Alaska Airlines Logo
12:35 p.m. - 6:25 a.m.SEA  Seattle/Tacoma Intl-SYD Sydney Kingsford Smith
22h 50m2 stops Portland Los Angeles
Alaska Airlines Logo
11:15 a.m. - 10:52 a.m.SYD  Sydney Kingsford Smith-SEA Seattle/Tacoma Intl
18h 37m1 stop Los Angeles
C$ 1,561Alaska Airlines
Thu, 26 Nov - Thu, 3 Dec
Air Canada Logo
3:15 p.m. - 9:35 a.m.SEA  Seattle/Tacoma Intl-SYD Sydney Kingsford Smith
23h 20m1 stop Vancouver Intl
Air Canada Logo
4:00 p.m. - 2:37 p.m.SYD  Sydney Kingsford Smith-SEA Seattle/Tacoma Intl
17h 37m1 stop Vancouver Intl
C$ 1,583Air 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 round-trip flight from Seattle to Sydney?

Round-trip flights from Seattle to Sydney typically range from C$ 1,429 to C$ 1,931. The lowest price found in the past 5 days was C$ 1,513, on Philippine Airlines.

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 C$ 1,452 round-trip.
•December (C$ 2,540) and January (C$ 1,793) 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.

Find deals

Key details for Seattle to Sydney flights

Low season

February

Cheapest flight

C$ 706
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 round-trip 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?

    Only Economy Class is available on flights from Seattle to Sydney.

  • How long does a flight from Seattle to Sydney take?

    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?

    Round-trip flights from Seattle to Sydney range from C$ 1,429 to C$ 1,931, with an average of C$ 1,604 over the past 12 months. Anything below C$ 1,429 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 C$ 1,604 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 C$ 800, which is 12% below the typical average for this route.

  • What car rental options are available at Sydney Kingsford Smith Airport (SYD)?

    Sydney Kingsford Smith Airport (SYD) hosts 5 major car rental companies, with daily rates averaging C$ 57 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 C$ 1,468 round-trip on average, while Thursday is the most expensive at C$ 1,770, a difference of C$ 302.

    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 layover airport when travelling from Seattle to Sydney?

    Flying via Vancouver Intl (YVR) gives the shortest average 1-stop total travel time at 18h 37m, compared with 18h 47m via San Francisco (SFO) and 19h 57m via Los Angeles (LAX).

  • What is the time difference between Seattle and Sydney?

    Sydney is 19 hours ahead of Seattle (Eastern Australia Time vs Pacific Time). Plan for the time shift when scheduling connections or first-day activities.

  • Which popular places can I visit in Sydney?

    Some of the most popular sights in Sydney are Sydney Cricket Ground, Sydney Opera House, and Chinatown Night Market. 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 C$ 1,468, about C$ 302 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 C$ 1,452 round-trip in that month – typically C$ 1,088 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.

    • ibis budget Sydney Airport
    • Travelodge Hotel Sydney Airport
    • Rydges Sydney Airport Hotel
  • 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 rental

Car rentals in Sydney
Hotels in Sydney
Vacations in Sydney