S$526 Cheap Flights from Seattle to Sydney

View S$526 flight on Sun, 16 Nov, 2025Opens in a new window

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

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Cheap Flights from Seattle to Sydney (SEA-SYD)

Prices were available within the past 7 days and start at S$526 for one-way flights and S$1,570 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Philippine Airlines
Fri, 20 Mar - Sun, 29 Mar
SEA
Seattle
SYD
Sydney
S$1,570 Return, found 6 days ago
S$1,570
Return
found 6 days ago
Select Philippine Airlines flight, departing Fri, 20 Mar from Seattle to Sydney, returning Sun, 29 Mar, priced at S$1,570 found 6 days ago
Philippine Airlines
Fri, 20 Mar - Sun, 29 Mar
SEA
Seattle
SYD
Sydney
S$1,590 Return, found 6 days ago
S$1,590
Return
found 6 days ago
Select Philippine Airlines flight, departing Fri, 20 Mar from Seattle to Sydney, returning Sun, 29 Mar, priced at S$1,590 found 6 days ago
Delta
Fri, 20 Mar - Sun, 29 Mar
SEA
Seattle
SYD
Sydney
S$1,622 Return, found 6 days ago
S$1,622
Return
found 6 days ago
Select Delta flight, departing Fri, 20 Mar from Seattle to Sydney, returning Sun, 29 Mar, priced at S$1,622 found 6 days ago
Hawaiian Airlines
Fri, 20 Mar - Sun, 29 Mar
SEA
Seattle
SYD
Sydney
S$1,648 Return, found 6 days ago
S$1,648
Return
found 6 days ago
Select Hawaiian Airlines flight, departing Fri, 20 Mar from Seattle to Sydney, returning Sun, 29 Mar, priced at S$1,648 found 6 days ago
Hawaiian Airlines
Fri, 20 Mar - Sun, 29 Mar
SEA
Seattle
SYD
Sydney
S$1,662 Return, found 6 days ago
S$1,662
Return
found 6 days ago
Select Hawaiian Airlines flight, departing Fri, 20 Mar from Seattle to Sydney, returning Sun, 29 Mar, priced at S$1,662 found 6 days ago
Philippine Airlines
Fri, 20 Mar - Sun, 29 Mar
SEA
Seattle
SYD
Sydney
S$1,727 Return, found 6 days ago
S$1,727
Return
found 6 days ago
Select Philippine Airlines flight, departing Fri, 20 Mar from Seattle to Sydney, returning Sun, 29 Mar, priced at S$1,727 found 6 days ago
Philippine Airlines
Fri, 20 Mar - Sun, 29 Mar
SEA
Seattle
SYD
Sydney
S$1,776 Return, found 6 days ago
S$1,776
Return
found 6 days ago
Select Philippine Airlines flight, departing Fri, 20 Mar from Seattle to Sydney, returning Sun, 29 Mar, priced at S$1,776 found 6 days ago
Philippine Airlines
Fri, 20 Mar - Sun, 29 Mar
SEA
Seattle
SYD
Sydney
S$1,789 Return, found 6 days ago
S$1,789
Return
found 6 days ago
Select Philippine Airlines flight, departing Fri, 20 Mar from Seattle to Sydney, returning Sun, 29 Mar, priced at S$1,789 found 6 days ago
Fiji Airways
Fri, 20 Mar - Sun, 29 Mar
SEA
Seattle
SYD
Sydney
S$1,836 Return, found 6 days ago
S$1,836
Return
found 6 days ago
Select Fiji Airways flight, departing Fri, 20 Mar from Seattle to Sydney, returning Sun, 29 Mar, priced at S$1,836 found 6 days ago
Air Canada
Fri, 20 Mar - Sun, 29 Mar
SEA
Seattle
SYD
Sydney
S$1,847 Return, found 6 days ago
S$1,847
Return
found 6 days ago
Select Air Canada flight, departing Fri, 20 Mar from Seattle to Sydney, returning Sun, 29 Mar, priced at S$1,847 found 6 days ago

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

August is typically the cheapest month to fly

From S$930 - S$1,505 per traveller.

Frequently asked questions

How much is a flight from SEA to SYD?
Based on fares listed within the last 7 days on Expedia for flights departing within the next year, round-trip flights between Seattle - Tacoma Intl. Airport (SEA) and Kingsford Smith Intl. Airport (SYD) start from S$1,570. Make your booking ASAP to secure the best price for your big adventure. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from SEA to Sydney Airport?
This varies from airline to airline, as each has its own terms and conditions. Head to the Customer Service Portal, where there are easy-to-follow instructions on how to cancel your flight online.
How do I find cheap flights from Sea-Tac Airport to Mascot Airport that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for Seattle - Tacoma Intl. Airport (SEA) to SYD flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Sea-Tac Airport to Kingsford Smith Intl. Airport (SYD)?
The distance is around 12,500 kilometres. Eye mask? Check. Noise-cancelling headphones? Double check. You'd be wise to pack all the essentials for this long-haul SeaTac to Sydney flight.
Which airlines fly direct from SEA to Mascot Airport?
Unfortunately, there are no airlines that directly fly between Seattle - Tacoma Intl. Airport (SEA) and SYD. You'll have to book a flight with at least one stop.
Are SEA to SYD flight tickets cheaper when they're purchased at the last minute?
Booking your trip from Seattle - Tacoma Intl. Airport (SEA) to SYD at the last minute could be your ticket to an awesome deal. However, it might cost you a whole lot more! If you'd prefer not to take any chances, book well ahead of your departure date. In fact, Expedia has some of the biggest bargains as far ahead as 12 months in advance. If your preferred carrier hasn't released tickets yet, check back regularly as deals are updated all the time on Expedia.

Travel information

Origin airport
Seattle - Tacoma Intl.
Destination airport
Kingsford Smith Intl.
Return price
S$1,569
Distance
12399 km

Book with confidence

Flights from Seattle to Sydney

There are several airlines that operate frequent flights from Seattle (SEA) to Sydney (SYD) including

The earliest flight leaves Seattle Tacoma Intl. Airport at 08:00 and arrives at Kingsford Smith Intl. Airport at 05:35. The last flight of the day departs Seattle at 21:29 and arrives at Sydney at 20:05.

The flight distance from Seattle to Sydney is about 13435 km, the shortest flight is 17 hours 30 minutes with WestJet.

Expedia lets you search across the largest number of airlines and Sydney flights, which means that you’ll be able to find a great flight deal at the perfect travel date and time. Our simple-to-use booking engine makes looking for terrific bargains easy and hassle-free; just enter your travel dates and departure city, and let Expedia do the rest! Adjust your travel dates and explore connecting flights to find an even better deal on your Seattle Sydney flight!

Browse through dozens of options and rest assured that you’re seeing the best price guaranteed! Our friendly customer service representatives are here to serve you 24 hours day to provide assistance and answer any questions that you may have about booking your Seattle to Sydney trip. There’s simply no substitute for great prices suited to your travel needs and backed by excellent customer support.

Combine your Sydney flight with a hotel and/or car rental for a package deal designed to save you even more money! Discover additional savings by booking in advance or find a last minute deal. There are tons of ways to save on your flights from Seattle to Sydney with Expedia. Use us as your stop travel destination and have the confidence that you’re getting a bargain!

Flights from Seattle to Sydney

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