SEA - SYD

C$ 685 Find Cheap Flights from Seattle to Sydney – Compare and Save

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Everything you should know

Cheapest round-trip
C$ 1,335
Typical prices: C$ 1,229-C$ 1,817
Air Canada
Tue 27/2Tue 20/3
SEA - SYD • 2 stops
Cheapest one-way flights
C$ 685
Typical prices: C$ 711-C$ 980
Multiple Airlines
Sat 17/11
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 layover airports
Manila Ninoy Aquino Intl (MNL)
Cheapest • Avg C$ 1,181 (round-trip)
Vancouver Intl (YVR)
Shortest trip • 18h 41m (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

Sat, 27 Feb - Sat, 20 Mar
Air Canada Logo
7:05 p.m. - 1:40 p.m.SEA  Seattle/Tacoma Intl-SYD Sydney Kingsford Smith
23h 35m2 stops Vancouver Intl Brisbane
Air Canada Logo
10:20 a.m. - 6:20 p.m.SYD  Sydney Kingsford Smith-SEA Seattle/Tacoma Intl
26h 00m1 stop Vancouver Intl
C$ 1,335Air Canada
Sat, 27 Feb - Sat, 20 Mar
Air Canada Logo
7:05 p.m. - 1:40 p.m.SEA  Seattle/Tacoma Intl-SYD Sydney Kingsford Smith
23h 35m2 stops Vancouver Intl Brisbane
Air Canada Logo
10:20 a.m. - 6:20 p.m.SYD  Sydney Kingsford Smith-SEA Seattle/Tacoma Intl
26h 00m1 stop Vancouver Intl
C$ 1,336Air Canada
Sat, 27 Feb - Sat, 20 Mar
Multiple Airlines Logo
3:15 p.m. - 1:40 p.m.SEA  Seattle/Tacoma Intl-SYD Sydney Kingsford Smith
27h 25m2 stops Vancouver Intl Brisbane
Multiple Airlines Logo
6:20 a.m. - 9:15 a.m.SYD  Sydney Kingsford Smith-SEA Seattle/Tacoma Intl
20h 55m2 stops Brisbane Vancouver Intl
C$ 1,350Multiple Airlines
Sat, 27 Feb - Sat, 20 Mar
Multiple Airlines Logo
3:15 p.m. - 1:40 p.m.SEA  Seattle/Tacoma Intl-SYD Sydney Kingsford Smith
27h 25m2 stops Vancouver Intl Brisbane
Multiple Airlines Logo
6:20 a.m. - 9:15 a.m.SYD  Sydney Kingsford Smith-SEA Seattle/Tacoma Intl
20h 55m2 stops Brisbane Vancouver Intl
C$ 1,351Multiple Airlines
Fri, 13 Nov - Sat, 21 Nov
Air Canada Logo
7:05 p.m. - 9:35 a.m.SEA  Seattle/Tacoma Intl-SYD Sydney Kingsford Smith
19h 30m1 stop Vancouver Intl
Air Canada Logo
11:20 a.m. - 9:32 a.m.SYD  Sydney Kingsford Smith-SEA Seattle/Tacoma Intl
17h 12m1 stop Vancouver Intl
C$ 1,356Air Canada
Fri, 13 Nov - Sat, 21 Nov
Air Canada Logo
7:05 p.m. - 9:35 a.m.SEA  Seattle/Tacoma Intl-SYD Sydney Kingsford Smith
19h 30m1 stop Vancouver Intl
Air Canada Logo
11:20 a.m. - 9:32 a.m.SYD  Sydney Kingsford Smith-SEA Seattle/Tacoma Intl
17h 12m1 stop Vancouver Intl
C$ 1,357Air Canada
Fri, 13 Nov - Sat, 21 Nov
Air Canada Logo
7:05 p.m. - 9:35 a.m.SEA  Seattle/Tacoma Intl-SYD Sydney Kingsford Smith
19h 30m1 stop Vancouver Intl
Air Canada Logo
11:20 a.m. - 9:32 a.m.SYD  Sydney Kingsford Smith-SEA Seattle/Tacoma Intl
17h 12m1 stop Vancouver Intl
C$ 1,360Air Canada
Fri, 13 Nov - Sat, 21 Nov
Multiple Airlines Logo
10:10 a.m. - 9:35 a.m.SEA  Seattle/Tacoma Intl-SYD Sydney Kingsford Smith
28h 25m1 stop Vancouver Intl
Multiple Airlines Logo
6:20 a.m. - 9:32 a.m.SYD  Sydney Kingsford Smith-SEA Seattle/Tacoma Intl
22h 12m2 stops Brisbane Vancouver Intl
C$ 1,371Multiple Airlines
Fri, 13 Nov - Sat, 21 Nov
Multiple Airlines Logo
10:10 a.m. - 9:35 a.m.SEA  Seattle/Tacoma Intl-SYD Sydney Kingsford Smith
28h 25m1 stop Vancouver Intl
Multiple Airlines Logo
6:20 a.m. - 9:32 a.m.SYD  Sydney Kingsford Smith-SEA Seattle/Tacoma Intl
22h 12m2 stops Brisbane Vancouver Intl
C$ 1,372Multiple Airlines
Fri, 13 Nov - Sat, 21 Nov
Multiple Airlines Logo
10:10 a.m. - 9:35 a.m.SEA  Seattle/Tacoma Intl-SYD Sydney Kingsford Smith
28h 25m1 stop Vancouver Intl
Multiple Airlines Logo
6:20 a.m. - 9:32 a.m.SYD  Sydney Kingsford Smith-SEA Seattle/Tacoma Intl
22h 12m2 stops Brisbane Vancouver Intl
C$ 1,374Multiple Airlines
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 from Seattle to Sydney with more confidence.

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

Round-trip flights from Seattle to Sydney start at C$ 1,335. Prices are typical for this route right now, with typical round-trip fares ranging from C$ 1,229 to C$ 1,817. The lowest price found in the past 5 days was C$ 1,335 on Air Canada.

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

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

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

•November is the cheapest month to fly from Seattle to Sydney at C$ 1,291 round-trip.
•December (C$ 2,407) and July (C$ 1,779) 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 prices 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

C$ 685
Best time to beat the crowds but there is an average 1% increase in price.
Most popular time to fly and prices are also 15% lower on average.
Flights 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 route details based on KAYAK data, including flight times, airports, airlines, and booking questions.

  • 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.

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

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

  • 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

    Los Angeles (LAX) handles the largest share of one-stop connections on this route.

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

    Yes. Being flexible with your travel dates can save you up to 17% on the Seattle to Sydney route. Monday is the cheapest departure day at C$ 1,414 round-trip on average, while Friday is the most expensive at C$ 1,686, a difference of C$ 272. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • Which popular places can I visit in Sydney?

    Some of the most popular sights in Sydney are Sydney Cricket Ground, Sydney Opera House, and State Theatre. These are among the most viewed places in Sydney on KAYAK.

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

    Last-minute fares on this route – booked within 2 weeks of departure – run 17% above the route average of C$ 1,528. Book 6 weeks before departure for the lowest fares.

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

    A direct flight from Seattle to Sydney takes 0h 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 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$ 728, which is 17% below the typical average for this route.

  • 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 41m, compared with 18h 55m via San Francisco (SFO) and 20h 10m via Los Angeles (LAX).

  • What is the time difference between Seattle and Sydney?

    Sydney is 17 hours ahead of Seattle (Eastern Australia Time vs Pacific Time). Plan for the time shift when scheduling connections or first-day activities.

  • 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 starting from around C$ 14 for economy cars. Top options include:
    • Bargain Car Rentals
    • East Coast Car Rentals
    • EverythingFleet
    • YESDRIVE CAR RENTAL
    • No Birds

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

    Round-trip flights from Seattle to Sydney range from C$ 1,229 to C$ 1,817, with an average of C$ 1,528 over the past 12 months. Anything below C$ 1,229 counts as a good deal.

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 instead of Friday. On this route, Monday flights average C$ 1,414 – about C$ 272 less than Friday (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 C$ 1,291 round-trip in that month – typically C$ 1,116 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 rental

Car rentals in Sydney
Hotels in Sydney
Vacations in Sydney