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Cheap flights from Sydney to Seattle from $764

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 10/9. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — SEA
18 Jun — 25 Jun1
1 adult

Cheapflights Tip: The best prices from Sydney Kingsford Smith to Seattle/Tacoma Intl are usually found in February or March, booked 31 days in advance, depart on a Thursday or Tuesday and return on a Monday

Cheap flight deals from Sydney to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Sydney (SYD) to Seattle (SEA). 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 13 June 2025.

Round-trip from

$1,325

One-way from

$764

Popular in

December

Cheapest in

February

Average price

$1,633
Delta
  • Delta
  • 10/7-31/7
  • 3 total stops
  • 52h 43m total
  • Sydney to Seattle
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10/9
  • 10/9
  • 1 total stop
  • 20h 00m total
  • Sydney to Seattle
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($248 potential increase over avg. return price).
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Cheapest flight prices on average. 2% potential price decrease ($69 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 2025
Search Deals

Find flight deals from Sydney to Seattle

Cheapest flights from Sydney to Seattle
Explore the most affordable flight options available from Sydney to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 13 June 2025.

Fri 7/1121:40SYD - SEA
1 stop18h 52mAlaska Airlines
Tue 11/1118:55SEA - SYD
1 stop29h 50mAlaska Airlines
Deal found 11/6$1,277
Thu 10/709:25SYD - SEA
1 stop22h 18mDelta
Thu 31/707:10SEA - SYD
2 stops30h 25mDelta
Deal found 12/6$1,325
Tue 9/910:20SYD - SEA
2 stops24h 32mUnited Airlines
Fri 26/919:37SEA - SYD
1 stop18h 18mUnited Airlines
Deal found 11/6$1,326
Sat 26/721:40SYD - SEA
1 stop28h 00mHawaiian Airlines
Sat 2/808:15SEA - SYD
1 stop18h 30mHawaiian Airlines
Deal found 11/6$1,363
Sun 3/809:20SYD - SEA
1 stop21h 56mAir Canada
Fri 8/813:45SEA - SYD
1 stop24h 35mAir Canada
Deal found 12/6$1,372
Thu 20/1110:30SYD - SEA
1 stop22h 25mAsiana Airlines
Thu 27/1100:10SEA - SYD
1 stop37h 20mAsiana Airlines
Deal found 13/6$1,403
Sat 26/713:45SYD - SEA
2 stops23h 15mMultiple Airlines
Sat 2/818:55SEA - SYD
1 stop19h 10mMultiple Airlines
Deal found 11/6$1,441
Tue 8/711:50SYD - SEA
2 stops23h 46mANA
Fri 1/816:30SEA - SYD
1 stop33h 45mANA
Deal found 12/6$1,650
Fri 27/610:10SYD - SEA
1 stop26h 05mPhilippine Airlines
Fri 18/723:35SEA - SYD
1 stop39h 25mPhilippine Airlines
Deal found 11/6$1,974
Fri 4/722:10SYD - SEA
1 stop38h 35mChina Airlines
Sun 27/701:40SEA - SYD
1 stop40h 05mChina Airlines
Deal found 12/6$2,138
Fri 27/609:10SYD - SEA
2 stops29h 35mAmerican Airlines
Tue 15/711:09SEA - SYD
2 stops26h 56mAmerican Airlines
Deal found 11/6$2,347
Sun 12/1021:55SYD - SEA
2 stops37h 20mTurkish Airlines
Sat 25/1020:00SEA - SYD
2 stops53h 50mTurkish Airlines
Deal found 11/6$2,467

Cheapflights Fare Finder

Customise your flight search to find flights from Sydney to Seattle 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 647,157 searches. Data last updated 13 June 2025.
Use the filters below to find and compare flights from Sydney to Seattle that are best for you.

Fly from

Sydney

Fly to

Seattle

Route

Depart

Return

Price

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Thu 10/7

09:25-14:43

1 stop22h 18m

Seattle/Tacoma Intl

Thu 31/7

07:10-06:35

2 stops30h 25m

$1,325

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Tue 9/9

10:20-17:52

2 stops24h 32m

Seattle/Tacoma Intl

Fri 26/9

19:37-06:55

1 stop18h 18m

$1,326

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Sat 26/7

21:40-08:40

1 stop28h 00m

Seattle/Tacoma Intl

Sat 2/8

08:15-19:45

1 stop18h 30m

$1,363

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Sun 3/8

09:20-14:16

1 stop21h 56m

Seattle/Tacoma Intl

Fri 8/8

13:45-07:20

1 stop24h 35m

$1,372

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Sun 3/8

21:40-06:00

1 stop25h 20m

Seattle/Tacoma Intl

Fri 8/8

08:15-19:45

1 stop18h 30m

$1,394

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Sat 26/7

13:45-20:00

2 stops23h 15m

Seattle/Tacoma Intl

Sat 2/8

18:55-07:05

1 stop19h 10m

$1,441

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Tue 8/7

11:50-18:36

2 stops23h 46m

Seattle/Tacoma Intl

Fri 1/8

16:30-19:15

1 stop33h 45m

$1,650

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Fri 27/6

10:10-19:15

1 stop26h 05m

Seattle/Tacoma Intl

Fri 18/7

23:35-08:00

1 stop39h 25m

$1,974

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Fri 4/7

22:10-19:45

1 stop38h 35m

Seattle/Tacoma Intl

Sun 27/7

01:40-10:45

1 stop40h 05m

$2,138

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Fri 27/6

09:10-21:45

2 stops29h 35m

Seattle/Tacoma Intl

Tue 15/7

11:09-07:05

2 stops26h 56m

$2,347

Flights are sorted by cheapest return flights first.

Deals found on 11/6

Showing 1-10 of 24 results
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Best time to book a flight from Sydney to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Sydney with our price prediction graph.
Estimated return 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.

Cheapflights Insights

Everything you need to know about your flight from Sydney to Seattle

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

Use this chart to determine the optimal time to book a return flight from Sydney to Seattle. Price data was last updated on 9 June 2025.

Booking 31 days in advance of your planned departure date is, on average, the best time to get cheap flights from Sydney to Seattle. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, March is the cheapest month in which you can book a flight from Sydney to Seattle (average of $875). Flying from Sydney to Seattle in December is currently the most expensive (average of $1,433). 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.

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

Find hourly flight availability from Sydney to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 13 June 2025.

One of the essential ways to save on airfare from Sydney to Seattle is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight at midday could potentially save you up to 19% on airfare.

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

Use this chart to determine the cheapest time to fly return from Sydney to Seattle. Price data was last updated on 16 December 2024.

Travellers seeking maximum savings on their Sydney to Seattle flight should consider departing on Saturday at midday when fares are most often at their lowest. Friday at midday flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in Seattle by month

Plan your trip to Seattle by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Seattle ranges from 18.0 - 168.0 inches per month. November is typically the wettest month, when rainfall can reach 168.0 mm. July is typically the driest time to visit Seattle when rainfall is around 18.0 mm.

Temperature in Seattle by month

Plan your trip to Seattle by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Seattle, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 19.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 5.0 C).

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. 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 Seattle. Reviews last updated 13 June 2025.
Get a feel of what it's like to fly with Air Tahiti Nui, Korean Air and China Airlines from Sydney to Seattle by reading reviews from past customers. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Air Tahiti Nui
8.7
Very Good
64 reviews
Check prices

Boarding

8.7

Comfort

8.1

Food

7.8

Overall

8.7

Entertainment

7.3

Crew

9.0

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

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.
Air Tahiti Nui
8.7
Very Good
64 reviews
Air Tahiti Nui
8.7
Very Good
64 reviews
Check prices

Boarding

8.7

Comfort

8.1

Food

7.8

Overall

8.7

Entertainment

7.3

Crew

9.0

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

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.
Korean Air
8.4
Very Good
1,091 reviews
Air Tahiti Nui
8.7
Very Good
64 reviews
Check prices

Boarding

8.7

Comfort

8.1

Food

7.8

Overall

8.7

Entertainment

7.3

Crew

9.0

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

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.
China Airlines
8.3
Very Good
738 reviews
Air Tahiti Nui
8.7
Very Good
64 reviews
Check prices

Boarding

8.7

Comfort

8.1

Food

7.8

Overall

8.7

Entertainment

7.3

Crew

9.0

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

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.
ANA
8.3
Very Good
882 reviews
Air Tahiti Nui
8.7
Very Good
64 reviews
Check prices

Boarding

8.7

Comfort

8.1

Food

7.8

Overall

8.7

Entertainment

7.3

Crew

9.0

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

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.
Asiana Airlines
8.2
Very Good
440 reviews
Air Tahiti Nui
8.7
Very Good
64 reviews
Check prices

Boarding

8.7

Comfort

8.1

Food

7.8

Overall

8.7

Entertainment

7.3

Crew

9.0

Reviews

1 / 2
10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

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 Sydney to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    Currently priced at $1,325, Delta will fly you from Sydney to Seattle and back. In addition to Delta, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from United Airlines and Hawaiian Airlines - these airlines can fly you to your destination from $1,326 and $1,363, respectively. Users have found that Delta is 23% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from Sydney to Seattle one-way?

    For one-way options, check prices for Qantas Airways. According to our data, you can fly for as low as $766. Users have also found prices from $791 and $1,650 on Delta and Air Tahiti Nui, respectively.

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

    Of the flights from Sydney to Seattle that have stopovers, most of them stop in Vancouver.

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

    The least popular stopover on flights from Sydney to Seattle is San Francisco.

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

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

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

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

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

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

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

    Currently, March is the cheapest month in which you can book a flight from Sydney to Seattle (average of $875). Flying from Sydney to Seattle in December is currently the most expensive (average of $1,433). 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

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Fly from Sydney to Seattle on these airlines

Choose from the following airlines for your flight from Sydney to Seattle. Flights are based on user searches made on Cheapflights and were last updated on 13 June 2025.
Air Canada flights from Sydney Kingsford Smith to Seattle/Tacoma Intl
Hawaiian Airlines flights from Sydney Kingsford Smith to Seattle/Tacoma Intl
Korean Air flights from Sydney Kingsford Smith to Seattle/Tacoma Intl

Top 10 airlines flying from Sydney to Seattle

Discover the top 10 airlines that operate flights from Sydney to Seattle. 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 647,157 searches. Data last updated 13 June 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$1,099Average$1,723FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Virgin AustraliaCheapest$1,155Average$2,082FlexibilityNo cancel feeOn-time80%
Search Virgin Australia flights
Asiana AirlinesCheapest$1,240Average$1,576FlexibilityNo cancel feeOn-time76%
Search Asiana Airlines flights
Air CanadaCheapest$1,243Average$1,616FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Qantas AirwaysCheapest$1,271Average$1,659FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights
Philippine AirlinesCheapest$1,333Average$1,481FlexibilityNo cancel feeOn-time60%
Search Philippine Airlines flights
Hawaiian AirlinesCheapest$1,361Average$1,914FlexibilityNo cancel feeOn-time85%
Search Hawaiian Airlines flights
Air New ZealandCheapest$1,377Average$1,435FlexibilityNo cancel feeOn-time78%
Search Air New Zealand flights
DeltaCheapest$1,391Average$2,234FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
American AirlinesCheapest$1,428Average$1,762FlexibilityNo cancel feeOn-time71%
Search American Airlines flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Sydney to Seattle?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Sydney to Seattle. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Sydney to Seattle?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Seattle from Sydney.

Can Cheapflights find flights from Sydney to Seattle with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Sydney to Seattle flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Sydney to Seattle become cheaper?

Yes, Cheapflights offers price alerts on Sydney to Seattle flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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