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Cheap flights from Sydney to Seattle from $706

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 13/8. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — SEA
23 Jun — 30 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 18 June 2025.

Round-trip from

$1,320

One-way from

$706

Popular in

December

Cheapest in

February

Average price

$1,634
United Airlines
  • United Airlines
  • 11/7-4/8
  • 3 total stops
  • 49h 12m total
  • Sydney to Seattle
13/8
  • 13/8
  • 1 total stop
  • 30h 40m total
  • Sydney to Seattle
Highest demand for flights based on searches. 8% potential increase in price ($254 potential increase over avg. return price).
Cheapest flight prices on average. 2% potential price decrease ($70 potential savings vs. average return price).
Average for round-trip flights in June 2025

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 18 June 2025.

Thu 19/609:30SYD - SEA
1 stop29h 28mUnited Airlines
Wed 2/712:40SEA - SYD
1 stop25h 15mUnited Airlines
Deal found 17/6$1,290
Thu 19/609:25SYD - SEA
2 stops24h 22mDelta
Wed 2/713:30SEA - SYD
2 stops24h 05mDelta
Deal found 17/6$1,330
Thu 28/813:15SYD - SEA
2 stops22h 35mMultiple Airlines
Fri 5/916:30SEA - SYD
1 stop23h 55mMultiple Airlines
Deal found 17/6$1,345
Fri 1/821:40SYD - SEA
1 stop25h 20mHawaiian Airlines
Fri 8/808:15SEA - SYD
1 stop18h 30mHawaiian Airlines
Deal found 17/6$1,351
Wed 10/909:10SYD - SEA
2 stops24h 30mAmerican Airlines
Mon 13/1010:00SEA - SYD
2 stops28h 05mAmerican Airlines
Deal found 16/6$1,377
Fri 7/1121:40SYD - SEA
1 stop18h 52mAlaska Airlines
Tue 11/1115:55SEA - SYD
1 stop32h 50mAlaska Airlines
Deal found 17/6$1,394
Thu 20/1110:30SYD - SEA
1 stop22h 25mAsiana Airlines
Thu 27/1100:10SEA - SYD
1 stop37h 20mAsiana Airlines
Deal found 17/6$1,399
Sat 13/917:45SYD - SEA
1 stop19h 39mQantas Airways
Tue 30/917:59SEA - SYD
1 stop20h 31mQantas Airways
Deal found 17/6$1,402
Thu 11/909:20SYD - SEA
1 stop17h 01mAir Canada
Thu 16/1010:00SEA - SYD
1 stop28h 20mAir Canada
Deal found 16/6$1,535
Wed 16/720:55SYD - SEA
2 stops38h 41mANA
Thu 31/716:30SEA - SYD
1 stop33h 45mANA
Deal found 18/6$1,690
Mon 8/910:20SYD - SEA
1 stop20h 08mVirgin Australia
Thu 16/1006:35SEA - SYD
1 stop31h 25mVirgin Australia
Deal found 16/6$1,701
Wed 27/822:10SYD - SEA
1 stop38h 35mChina Airlines
Thu 4/901:40SEA - SYD
1 stop40h 05mChina Airlines
Deal found 17/6$1,829

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 18 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

Fri 11/7

09:30-20:56

2 stops28h 26m

Seattle/Tacoma Intl

Mon 4/8

17:14-07:00

1 stop20h 46m

$1,320

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Thu 28/8

13:15-18:50

2 stops22h 35m

Seattle/Tacoma Intl

Fri 5/9

16:30-09:25

1 stop23h 55m

$1,345

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Fri 1/8

21:40-06:00

1 stop25h 20m

Seattle/Tacoma Intl

Fri 8/8

08:15-19:45

1 stop18h 30m

$1,351

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Wed 10/9

09:10-16:40

2 stops24h 30m

Seattle/Tacoma Intl

Mon 13/10

10:00-08:05

2 stops28h 05m

$1,377

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Fri 7/11

21:40-21:32

1 stop18h 52m

Seattle/Tacoma Intl

Tue 11/11

15:55-19:45

1 stop32h 50m

$1,394

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Thu 20/11

10:30-13:55

1 stop22h 25m

Seattle/Tacoma Intl

Thu 27/11

00:10-08:30

1 stop37h 20m

$1,399

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Sat 13/9

17:45-20:24

1 stop19h 39m

Seattle/Tacoma Intl

Tue 30/9

17:59-07:30

1 stop20h 31m

$1,402

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Fri 1/8

09:25-12:39

1 stop20h 14m

Seattle/Tacoma Intl

Sat 9/8

07:20-06:35

1 stop30h 15m

$1,486

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Thu 11/9

09:20-09:21

1 stop17h 01m

Seattle/Tacoma Intl

Thu 16/10

10:00-08:20

1 stop28h 20m

$1,535

SydneySeattle

SYD - SEA

SYDSEA

Sydney Kingsford Smith

Wed 16/7

20:55-18:36

2 stops38h 41m

Seattle/Tacoma Intl

Thu 31/7

16:30-19:15

1 stop33h 45m

$1,690

Flights are sorted by cheapest return flights first.

Deals found on 15/6

Showing 1-10 of 31 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 13 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 $1,434). 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 18 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 18 June 2025.
Get a feel of what it's like to fly with Air Tahiti Nui, Korean Air and Japan 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.

Food

7.8

Boarding

8.7

Entertainment

7.3

Comfort

8.1

Crew

9.0

Overall

8.7

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.

Food

7.8

Boarding

8.7

Entertainment

7.3

Comfort

8.1

Crew

9.0

Overall

8.7

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.

Food

7.8

Boarding

8.7

Entertainment

7.3

Comfort

8.1

Crew

9.0

Overall

8.7

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.

Food

7.8

Boarding

8.7

Entertainment

7.3

Comfort

8.1

Crew

9.0

Overall

8.7

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.

Food

7.8

Boarding

8.7

Entertainment

7.3

Comfort

8.1

Crew

9.0

Overall

8.7

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.
8.3
Very Good

Food

7.8

Boarding

8.7

Entertainment

7.3

Comfort

8.1

Crew

9.0

Overall

8.7

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 $1,320, United Airlines will fly you from Sydney to Seattle and back. In addition to United Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Hawaiian Airlines and American Airlines - these airlines can fly you to your destination from $1,351 and $1,377, respectively. Users have found that United Airlines 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 $757. Users have also found prices from $788 and $795 on Delta and United Airlines, respectively.

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

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

  • 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 $1,434). 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.

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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 18 June 2025.

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 18 June 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$1,220Average$1,726FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Asiana AirlinesCheapest$1,240Average$1,576FlexibilityNo cancel feeOn-time76%
Search Asiana Airlines flights
Air CanadaCheapest$1,245Average$1,623FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Qantas AirwaysCheapest$1,272Average$1,659FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights
DeltaCheapest$1,321Average$2,181FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Philippine AirlinesCheapest$1,333Average$1,481FlexibilityNo cancel feeOn-time60%
Search Philippine Airlines flights
Hawaiian AirlinesCheapest$1,360Average$1,903FlexibilityNo cancel feeOn-time85%
Search Hawaiian Airlines flights
Air New ZealandCheapest$1,377Average$1,436FlexibilityNo cancel feeOn-time78%
Search Air New Zealand flights
American AirlinesCheapest$1,428Average$1,763FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Virgin AustraliaCheapest$1,448Average$2,306FlexibilityNo cancel feeOn-time80%
Search Virgin Australia flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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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