Cheap flights from Seattle (SEA) to Sydney (SYD) from $338

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/13. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
SEA — SYD
Jun 18 — Jun 251

The best prices from Seattle/Tacoma Intl to Sydney Kingsford Smith are usually found in February or March, booked 90 days in advance, depart on a Monday or Tuesday and return on a Sunday

Cheap flight deals from Seattle to Sydney

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Sydney (SYD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated June 13, 2024.

Popular in

December

Cheapest in

February

Round-trip from

$1,092

One-way from

$747
High demand for flights, 16% potential price rise
Best time to find cheap flights, 13% potential price drop
From Seattle/Tacoma Intl to Sydney Kingsford Smith
One-way flight from Seattle/Tacoma Intl to Sydney Kingsford Smith

What is the cheapest day to fly round-trip from Seattle to Sydney?

Sunday is generally a great day to depart. Flying on this day could help you save up to 11%.

How far in advance should I book a flight from Seattle to Sydney?

Find a great deal and save up to 43% by booking at least 33 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from Seattle to Sydney within the next two weeks, with the cheapest ticket starting at $1,042.

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

Due to multiple factors, expect to potentially pay more when booking in December. For low rates, February can be a great choice for travel to Sydney. Flights to Sydney from Seattle in February are about $1,156 on average during February, but can be found for as low as $816.

What is the cheapest time of day to fly from SEA to SYD?

A simple way to save on the total cost of your ticket is to fly from Seattle to Sydney in the evening. If you’re flexible enough to do this you can expect to save up to 14% on your trip compared to booking a flight in the morning.

Cheap Seattle to Sydney flights in June & July 2024

Find cheap flight options from Seattle to Sydney specifically for the months of June and July 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 3,214,720 searches. Prices were last updated on June 13, 2024.
These are some of the best deals we've found on flights to Sydney in 2024 at this time. More deals are always being added, so be sure to check back regularly.
Fri 7/268:45 amSEA - SYD
1 stop36h 55mMultiple Airlines
Fri 8/24:20 pmSYD - SEA
2 stops23h 15mMultiple Airlines
Deal found 6/13$854
Fri 7/268:45 amSEA - SYD
1 stop36h 55mMultiple Airlines
Fri 8/24:20 pmSYD - SEA
2 stops23h 15mMultiple Airlines
Deal found 6/13$862
Wed 7/318:45 amSEA - SYD
1 stop36h 55mMultiple Airlines
Thu 8/154:20 pmSYD - SEA
1 stop22h 25mMultiple Airlines
Deal found 6/12$903
Fri 7/2610:30 amSEA - SYD
2 stops40h 15mHawaiian Airlines
Sat 8/109:40 pmSYD - SEA
1 stop17h 05mHawaiian Airlines
Deal found 6/12$935
Sun 6/308:35 amSEA - SYD
1 stop37h 05mMultiple Airlines
Thu 7/184:20 pmSYD - SEA
2 stops23h 15mMultiple Airlines
Deal found 6/12$936
Fri 7/268:45 amSEA - SYD
1 stop36h 55mMultiple Airlines
Fri 8/24:20 pmSYD - SEA
1 stop22h 25mMultiple Airlines
Deal found 6/13$940
Fri 7/268:45 amSEA - SYD
1 stop36h 55mMultiple Airlines
Fri 8/24:20 pmSYD - SEA
1 stop22h 25mMultiple Airlines
Deal found 6/13$949
Fri 7/268:45 amSEA - SYD
1 stop18h 00mHawaiian Airlines
Sat 8/109:40 pmSYD - SEA
1 stop17h 05mHawaiian Airlines
Deal found 6/12$973
Sun 6/308:35 amSEA - SYD
1 stop37h 05mMultiple Airlines
Thu 7/184:20 pmSYD - SEA
1 stop22h 25mMultiple Airlines
Deal found 6/12$991

Seattle to Sydney 2024 flight deals

Discover exclusive flight deals for travel between Seattle and Sydney in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 3,214,720 searches. Data last updated June 13, 2024.
These are some of the best deals we've found on flights to Sydney in 2024 at this time. More deals are always being added, so be sure to check back regularly.
Wed 8/78:58 pmSEA - SYD
1 stop24h 42mMultiple Airlines
Fri 8/304:20 pmSYD - SEA
1 stop22h 25mMultiple Airlines
Deal found 6/12$642
Wed 8/710:30 amSEA - SYD
2 stops35h 10mMultiple Airlines
Fri 8/304:20 pmSYD - SEA
1 stop22h 25mMultiple Airlines
Deal found 6/12$711
Sun 8/48:45 amSEA - SYD
1 stop36h 55mMultiple Airlines
Mon 8/194:20 pmSYD - SEA
1 stop22h 25mMultiple Airlines
Deal found 6/12$796
Thu 8/18:45 amSEA - SYD
1 stop36h 55mMultiple Airlines
Fri 8/304:20 pmSYD - SEA
1 stop22h 25mMultiple Airlines
Deal found 6/13$812
Thu 8/18:45 amSEA - SYD
1 stop36h 55mMultiple Airlines
Fri 8/304:20 pmSYD - SEA
1 stop22h 25mMultiple Airlines
Deal found 6/13$819
Sun 8/48:45 amSEA - SYD
1 stop36h 55mMultiple Airlines
Fri 8/234:20 pmSYD - SEA
1 stop22h 25mMultiple Airlines
Deal found 6/12$840
Fri 8/98:45 amSEA - SYD
1 stop36h 55mMultiple Airlines
Mon 8/194:20 pmSYD - SEA
1 stop22h 25mMultiple Airlines
Deal found 6/12$843
Fri 8/168:45 amSEA - SYD
1 stop36h 55mMultiple Airlines
Thu 8/224:20 pmSYD - SEA
2 stops23h 15mMultiple Airlines
Deal found 6/13$848
Fri 7/268:45 amSEA - SYD
1 stop36h 55mMultiple Airlines
Fri 8/24:20 pmSYD - SEA
2 stops23h 15mMultiple Airlines
Deal found 6/13$854

Seattle to Sydney flights leaving soon

Find last-minute flight options from Seattle to Sydney for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 3,214,720 searches. Data last updated June 13, 2024.
Have a look at some of the last-minute flights available departing from Seattle to Sydney. Users should double check the flight they book to ensure it matches the day, time, and destination they're looking for.
Thu 6/207:05 pmSEA - SYD
1 stop19h 15mAir Canada
Thu 6/279:20 amSYD - SEA
1 stop22h 14mAir Canada
Deal found 6/12$1,574
Thu 6/203:10 pmSEA - SYD
1 stop23h 10mMultiple Airlines
Wed 6/269:35 pmSYD - SEA
2 stops29h 25mMultiple Airlines
Deal found 6/13$1,596
Thu 6/203:10 pmSEA - SYD
1 stop23h 10mMultiple Airlines
Thu 6/277:05 amSYD - SEA
2 stops19h 55mMultiple Airlines
Deal found 6/12$1,617
Fri 6/213:10 pmSEA - SYD
1 stop23h 10mAir Canada
Sat 7/69:20 amSYD - SEA
1 stop17h 44mAir Canada
Deal found 6/12$1,677
Thu 6/201:10 pmSEA - SYD
1 stop25h 10mAir Canada
Wed 6/269:20 amSYD - SEA
1 stop26h 06mAir Canada
Deal found 6/13$1,710
Fri 6/212:22 pmSEA - SYD
2 stops23h 38mUnited Airlines
Sat 7/610:20 amSYD - SEA
2 stops29h 25mUnited Airlines
Deal found 6/12$1,936
Tue 6/183:30 pmSEA - SYD
2 stops24h 15mAir New Zealand
Sun 6/239:55 amSYD - SEA
2 stops29h 20mAir New Zealand
Deal found 6/12$2,049
Tue 6/183:30 pmSEA - SYD
2 stops24h 15mAir New Zealand
Sun 6/2310:20 amSYD - SEA
1 stop17h 20mAir New Zealand
Deal found 6/12$2,104
Thu 6/207:05 pmSEA - SYD
2 stops23h 35mAir Canada
Thu 6/276:00 amSYD - SEA
2 stops21h 00mAir Canada
Deal found 6/12$2,161

One-way flights to Sydney from Seattle

Search for one-way flight options from Seattle to Sydney. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 3,214,720 searches. Data last updated June 13, 2024.
If you're seeking multiple options on one-way flights from Seattle to Sydney, be sure to check out these deals, which are updated often. For those needing a return trip from Seattle, there is a search form available above.
Tue 8/1310:30 amSEA - SYD
3 stops42h 10mMultiple Airlines
Deal found 6/13$338
Wed 8/710:30 amSEA - SYD
2 stops35h 10mMultiple Airlines
Deal found 6/12$371
Tue 8/138:27 pmSEA - SYD
2 stops49h 13mMultiple Airlines
Deal found 6/13$379
Fri 8/1610:30 amSEA - SYD
2 stops35h 10mMultiple Airlines
Deal found 6/12$384
Thu 8/88:45 amSEA - SYD
1 stop36h 55mMultiple Airlines
Deal found 6/12$400
Sun 8/118:45 amSEA - SYD
1 stop36h 55mMultiple Airlines
Deal found 6/12$422
Fri 8/98:45 amSEA - SYD
1 stop36h 55mMultiple Airlines
Deal found 6/12$423
Tue 8/610:30 amSEA - SYD
3 stops42h 40mMultiple Airlines
Deal found 6/12$425
Wed 8/78:45 amSEA - SYD
1 stop36h 55mMultiple Airlines
Deal found 6/12$432

Find flights from Seattle to Sydney within your budget

Customize your flight search to find flights from Seattle to Sydney that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 3,214,720 searches. Data last updated June 13, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$642 - $1,025

Route

Depart

Return

Price

Seattle/Tacoma IntlSydney Kingsford Smith

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Wed 8/7

1 stop24h 42m

Sydney Kingsford Smith

Fri 8/30

1 stop22h 25m

$642

Seattle/Tacoma IntlSydney Kingsford Smith

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Wed 8/7

2 stops35h 10m

Sydney Kingsford Smith

Fri 8/30

1 stop22h 25m

$711

Seattle/Tacoma IntlSydney Kingsford Smith

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Fri 11/1

1 stop18h 05m

Sydney Kingsford Smith

Sun 11/17

1 stop18h 30m

$882

Seattle/Tacoma IntlSydney Kingsford Smith

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Sun 10/13

1 stop23h 10m

Sydney Kingsford Smith

Mon 10/28

1 stop16h 56m

$915

Seattle/Tacoma IntlSydney Kingsford Smith

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Fri 11/8

1 stop40h 10m

Sydney Kingsford Smith

Wed 12/11

1 stop25h 35m

$979

Seattle/Tacoma IntlSydney Kingsford Smith

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Tue 11/12

1 stop20h 33m

Sydney Kingsford Smith

Tue 2/11

1 stop18h 54m

$1,002

Seattle/Tacoma IntlSydney Kingsford Smith

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Tue 10/29

1 stop19h 50m

Sydney Kingsford Smith

Tue 11/26

1 stop20h 27m

$1,018

Seattle/Tacoma IntlSydney Kingsford Smith

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Sun 11/17

2 stops29h 35m

Sydney Kingsford Smith

Wed 11/27

2 stops25h 01m

$1,020

Seattle/Tacoma IntlSydney Kingsford Smith

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Mon 9/30

1 stop27h 55m

Sydney Kingsford Smith

Wed 10/9

1 stop23h 42m

$1,025

Flights are sorted by cheapest first

Deals found on 6/12

How far ahead should I book a flight from Seattle to Sydney?

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Sydney. Price data was last updated on June 12, 2024.
To ensure you get the cheapest price possible for a flight from Seattle to Sydney, you should look to book at least 90 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
Search Deals

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

Use this chart to determine the cheapest time to fly round-trip from Seattle to Sydney. Price data was last updated on June 9, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their Seattle to Sydney flight should consider departing on Tuesday evenings when fares are most often at their lowest. Thursday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

Best time to book a flight from Seattle to Sydney

Have a flexible travel schedule? Discover the best time to fly to Sydney from Seattle with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Temperature and rainfall in Sydney by month

Plan your trip to Sydney by taking into account the average temperature and rainfall totals by month.

SYD

Temperature

51.8 - 71.6 °F

If weather is an important factor for your trip to Sydney, use this chart to help with planning. For those seeking warmer temperatures, January is the ideal time of year to visit, when temperatures reach an average of 71.6 F. Travelers looking to avoid the cold should look outside of July, when temperatures are typically at their lowest (around 51.8 F).

Reviews of airlines servicing Sydney

Get insights into the airlines that provide service to Sydney. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Sydney. Reviews last updated June 13, 2024.
To help decide which airline to fly from Seattle to Sydney, see what other customers have to say about United Airlines, Hawaiian Airlines and Air Canada. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.8
Very good
73 reviews

Boarding

8.5

Entertainment

7.4

Food

8.0

Overall

8.8

Comfort

8.1

Crew

9.0

Reviews

1 / 2

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.

8.8
Very good
73 reviews
8.8
Very good
73 reviews

Boarding

8.5

Entertainment

7.4

Food

8.0

Overall

8.8

Comfort

8.1

Crew

9.0

Reviews

1 / 2

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.

8.5
Very good
893 reviews
8.8
Very good
73 reviews

Boarding

8.5

Entertainment

7.4

Food

8.0

Overall

8.8

Comfort

8.1

Crew

9.0

Reviews

1 / 2

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.

8.4
Very good
565 reviews
8.8
Very good
73 reviews

Boarding

8.5

Entertainment

7.4

Food

8.0

Overall

8.8

Comfort

8.1

Crew

9.0

Reviews

1 / 2

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.

8.3
Very good
880 reviews
8.8
Very good
73 reviews

Boarding

8.5

Entertainment

7.4

Food

8.0

Overall

8.8

Comfort

8.1

Crew

9.0

Reviews

1 / 2

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.

8.3
Very good
1,417 reviews
8.8
Very good
73 reviews

Boarding

8.5

Entertainment

7.4

Food

8.0

Overall

8.8

Comfort

8.1

Crew

9.0

Reviews

1 / 2

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Sydney. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • Can I find flights from Seattle to Sydney for under $700 on Cheapflights?

    Yes, there are multiple flights from Seattle to Sydney for under $700. The cheapest flight booked recently is on Multiple Airlines for just $642, but on average you can expect to pay $851.

  • Are there last-minute flights available from Seattle to Sydney for under $1,600?

    There are currently 20+ open flights from Seattle to Sydney within the next 7 days for less than $1,600.

  • What are the cheapest airlines flying from Seattle to Sydney round-trip?

    Cheapflights users have booked flights from Seattle to Sydney round-trip from $882. Another airline that can offer you cheap pricing is Air Canada. These flights start at 23% lower than the current average price 3 months from now.

  • What does SEA to SYD mean?

    SEA and SYD are unique codes to identify airports used in the aviation industry. They are defined by IATA (International Air Transport Association) and are commonly called IATA codes. SEA to SYD refers to a flight route from Seattle/Tacoma Intl Airport to Sydney Kingsford Smith Airport.

  • Where are the most common layover locations when flying from Seattle to Sydney?

  • What are some popular things to do or see while on a layover in Los Angeles?

    Hollywood Bowl, Hollywood Walk of Fame, and L.A. Live are currently the most popular points of interest in Los Angeles at the moment. Hollywood Bowl, Hollywood Walk of Fame and L.A. Live are located about 12.5 mi, 11.7 mi, and 10.8 mi, respectively from Los Angeles if you are interested in checking them out. Travelers in need of a car in Los Angeles can rent one for about $41 per day.

  • What are some popular points of interest to see during a layover in Vancouver?

    Pacific Central Station, Capilano Suspension Bridge, and Queen Elizabeth Theatre are currently the most popular points of interest in Vancouver at the moment. Those on a layover in Vancouver interested in visiting Pacific Central Station, Capilano Suspension Bridge, or Queen Elizabeth Theatre can do so by traveling 6.6 mi, 10.6 mi, and 6.6 mi, respectively from Vancouver Intl. Those looking to explore during their layover in Vancouver can rent a car from Vancouver Intl for about $55 per day.

  • Where are the least popular layover locations for Seattle to Sydney flights?

  • Can I find deals for flights from Seattle to Sydney that include extra baggage allowance?

    The amount of baggage you can bring on your Seattle to Sydney flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Seattle to Sydney with specific airlines?

    Yes, Cheapflights allows you to browse and filter Seattle to Sydney flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • Can I find deals for flights from Seattle to Sydney that include hotel bookings?

    Yes. In addition to deals on Seattle to Sydney flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Sydney?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Sydney.

  • Can I find deals for business class flights from Seattle to Sydney?

    Yes. Cheapflights offers flight deals from Seattle to Sydney by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • Can I find deals for flights from Seattle to Sydney that allow pets onboard?

    Many airlines flying from Seattle to Sydney offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Seattle to Sydney?

    Yes, you can often find last-minute deals on Seattle to Sydney flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the Seattle to Sydney flight deals updated?

    The Seattle to Sydney flight deals you see on this page were last updated on 6/13.

  • What are the most popular airlines that fly from Seattle to Sydney?

  • What is the cheapest month to book a flight from Seattle to Sydney?

    Currently, February is the cheapest month in which you can book a flight from Seattle to Sydney (average of $1,092). Flying from Seattle to Sydney in December is currently the most expensive (average of $1,370). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Seattle to Sydney
See prices for flight routes from nearby airports that may be better suited for you.

Top 10 airlines flying from Seattle to Sydney

Discover the top 10 airlines that operate flights from Seattle to Sydney. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 3,214,720 searches. Data last updated June 13, 2024.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$759Average$1,091FlexibilityNo cancel feeOn-time69%
ANACheapest$761Average$1,337FlexibilityNo cancel feeOn-time80%
Air CanadaCheapest$792Average$1,097FlexibilityNo cancel feeOn-time67%
DeltaCheapest$838Average$1,173FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$931Average$1,232FlexibilityNo cancel feeOn-time85%
American AirlinesCheapest$990Average$1,215FlexibilityNo cancel feeOn-time71%
Qantas AirwaysCheapest$1,013Average$1,611FlexibilityNo cancel feeOn-time74%
Alaska AirlinesCheapest$1,071Average$1,444FlexibilityNo cancel feeOn-time75%
Fiji AirwaysCheapest$1,129Average$1,294FlexibilityNo cancel feeOn-time74%
Air New ZealandCheapest$1,232Average$1,717FlexibilityNo cancel feeOn-time78%

Search flights from Seattle to Sydney by cabin class

Find flights from Seattle to Sydney, based on your preferred cabin class, be it economy, premium economy, business, or first class.
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