$576 Cheap Flights from Sydney (SYD) to Seattle (SEA)

View $576 flight on Mon, May 25, 2026Opens in a new window

Popular airlines from Sydney Airport (SYD) to Seattle-Tacoma International Airport (SEA)

Cheap Flights from Sydney to Seattle (SYD-SEA)

Prices were available within the past 7 days and start at $576 for one-way flights and $871 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Hawaiian Airlines
Thu, Nov 20 - Wed, Dec 3
SYD
Sydney
SEA
Seattle
$871 Roundtrip, found 2 days ago
$871
Roundtrip
found 2 days ago
Select Hawaiian Airlines flight, departing Thu, Nov 20 from Sydney to Seattle, returning Wed, Dec 3, priced at $871 found 2 days ago
Air Canada
Tue, Dec 2 - Tue, Dec 9
SYD
Sydney
SEA
Seattle
$949 Roundtrip, found 6 days ago
$949
Roundtrip
found 6 days ago
Select Air Canada flight, departing Tue, Dec 2 from Sydney to Seattle, returning Tue, Dec 9, priced at $949 found 6 days ago
Hawaiian Airlines
Fri, Feb 6 - Thu, Feb 19
SYD
Sydney
SEA
Seattle
$949 Roundtrip, found 1 day ago
$949
Roundtrip
found 1 day ago
Select Hawaiian Airlines flight, departing Fri, Feb 6 from Sydney to Seattle, returning Thu, Feb 19, priced at $949 found 1 day ago
Asiana Airlines
Fri, Sep 4 - Sat, Sep 5
SYD
Sydney
SEA
Seattle
$960 Roundtrip, found 21 hours ago
$960
Roundtrip
found 21 hours ago
Select Asiana Airlines flight, departing Fri, Sep 4 from Sydney to Seattle, returning Sat, Sep 5, priced at $960 found 21 hours ago
Philippine Airlines
Wed, Nov 5 - Sun, Nov 9
SYD
Sydney
SEA
Seattle
$1,014 Roundtrip, found 4 days ago
$1,014
Roundtrip
found 4 days ago
Select Philippine Airlines flight, departing Wed, Nov 5 from Sydney to Seattle, returning Sun, Nov 9, priced at $1,014 found 4 days ago
Singapore Airlines
Fri, Mar 13 - Sun, Mar 22
SYD
Sydney
SEA
Seattle
$1,054 Roundtrip, found 2 days ago
$1,054
Roundtrip
found 2 days ago
Select Singapore Airlines flight, departing Fri, Mar 13 from Sydney to Seattle, returning Sun, Mar 22, priced at $1,054 found 2 days ago
American Airlines
Tue, Nov 4 - Tue, Nov 11
SYD
Sydney
SEA
Seattle
$1,059 Roundtrip, found 3 days ago
$1,059
Roundtrip
found 3 days ago
Select American Airlines flight, departing Tue, Nov 4 from Sydney to Seattle, returning Tue, Nov 11, priced at $1,059 found 3 days ago
Qantas Airways
Tue, Nov 18 - Tue, Dec 9
SYD
Sydney
SEA
Seattle
$1,071 Roundtrip, found 5 days ago
$1,071
Roundtrip
found 5 days ago
Select Qantas Airways flight, departing Tue, Nov 18 from Sydney to Seattle, returning Tue, Dec 9, priced at $1,071 found 5 days ago
Alaska Airlines
Fri, Sep 4 - Sat, Sep 5
SYD
Sydney
SEA
Seattle
$1,074 Roundtrip, found 21 hours ago
$1,074
Roundtrip
found 21 hours ago
Select Alaska Airlines flight, departing Fri, Sep 4 from Sydney to Seattle, returning Sat, Sep 5, priced at $1,074 found 21 hours ago
Delta
Tue, Nov 4 - Tue, Nov 11
SYD
Sydney
SEA
Seattle
$1,076 Roundtrip, found 3 days ago
$1,076
Roundtrip
found 3 days ago
Select Delta flight, departing Tue, Nov 4 from Sydney to Seattle, returning Tue, Nov 11, priced at $1,076 found 3 days ago

Find the cheapest month to fly from Sydney (SYD) to Seattle (SEA)

September is typically the cheapest month to fly

From $763 - $985 per traveler.

Alternative airports near Seattle

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Seattle - Tacoma Intl. SEA. Cheapest option available. Average driving time to city center is 20 minutes. Flights from $1,079
SEA
Seattle - Tacoma Intl.
Cheapest
Average driving time to city center20 min
Flights from $1,079

Frequently asked questions

How much does a flight from Kingsford Smith Intl. Airport (SYD) to Seattle - Tacoma Intl. Airport (SEA) cost?
Snag a cheap one-way flight from $576 or cheap return flight from $871 from Kingsford Smith Intl. Airport (SYD) to Seattle - Tacoma Intl. Airport (SEA) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Kingsford Smith Intl. Airport (SYD) to Seattle - Tacoma Intl. Airport (SEA)?
November is the cheapest month to fly from SYD to SEA. Traveling during quieter months is often the key to finding better fares.
What is the cheapest airline that flies from Kingsford Smith Intl. Airport (SYD) to Seattle - Tacoma Intl. Airport (SEA)?
Use the filters on Expedia to compare airlines and find the most affordable carrier that'll take you from SYD to SEA. Then, sort your results by "Price (lowest to highest)" to score a good deal.
How many flights per day from Kingsford Smith Intl. Airport (SYD) to Seattle - Tacoma Intl. Airport (SEA)?
You'll need to book a flight with a layover when traveling from Kingsford Smith Intl. Airport (SYD) to Seattle - Tacoma Intl. Airport (SEA). There are no daily direct flights on this route. However, just filter your search to include one or two stops to discover the best option for your trip.
What day of the week has the most flights from SYD to SEA?
Friday is generally the busiest day for flights, while Tuesday is often the quietest.* Keep in mind that flight schedules can vary based on a range of factors, such as the airline and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Kingsford Smith Intl. Airport (SYD) to Seattle - Tacoma Intl. Airport (SEA)?
To reach Seattle - Tacoma Intl. Airport (SEA) on schedule, opt for a flight that leaves Kingsford Smith Intl. Airport (SYD) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this time.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Kingsford Smith Intl. Airport (SYD) to Seattle - Tacoma Intl. Airport (SEA) last-minute?
Waiting until just before your departure to book a flight from SYD to SEA generally means paying more. Although you may find some last-minute discounts, there's no guarantee. Be flexible with your itinerary for the best chance of getting a bargain.
Is it cheaper to book a SYD to SEA flight and hotel package?
Compared with arranging hotels and flights separately, booking a SYD to SEA flight and hotel package with Expedia could lead to significant savings. Better yet, having it all in one place takes the hassle out of travel planning. Just secure your flights and select from our wide range of hotels, then customize your trip with other add-ons like activities and car rentals.
Can I cancel or change the date of my flight from Kingsford Smith Intl. Airport (SYD) to Seattle - Tacoma Intl. Airport (SEA)?
Usually, it's possible to reschedule or cancel your SYD to SEA flight. However, for bookings made more than 24 hours ago, additional fees may apply. Refer to your airline's policies in your itinerary to see what changes are allowed and if any costs are involved. You'll also find further details on our Customer Service portal.

Travel information

Origin airport
Kingsford Smith Intl.
Destination airport
Seattle - Tacoma Intl.
Airlines serving
Air Canada, Air New Zealand, Air Tahiti Nui, Alaska Airlines, All Nippon Airways, American Airlines, Asiana Airlines, Cathay Pacific, China Airlines, Delta, Emirates, Fiji Airways, Hawaiian Airlines, Korean Air, Philippine Airlines, Qantas Airways, Qatar Airways, Singapore Airlines, Turkish Airlines, United
Roundtrip price
$870
Distance
7749 mi

Book with confidence

Sydney to Seattle Flights

The cheapest times to fly from Sydney to Seattle

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Sydney to Seattle are during the month of November. You can find some of the cheapest flights from Sydney to Seattle with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Sydney to Seattle

Sunday is one of the best days to book for cheap flights from Sydney to Seattle: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Sydney to Seattle

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Sydney to Seattle in 2025. You can also book with separate airlines for your outbound and return journeys, from $576 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Sydney to Seattle flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Sydney to Seattle airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Sydney to Seattle Flights

Explore a world of travel with Expedia

*Available to One Key members.