Cheap Flights from Seattle to Sydney

More Flash, Less Cash - Take advantage of our Price Pledge** (even on luxey stays)

We keep it easy with the option to pay now or later on select accommodation

Book up 'til the last second - millions of rooms to crash tonight^

Amazing SEA to SYD Flight Deals

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

Frequently asked questions

How long is the flight from Seattle - Tacoma Intl. Airport (SEA) to Kingsford Smith Intl. Airport (SYD)?
Don't be ashamed to pull on those comfy trackie dacks, 'cause this is one long ride. On average, it takes 21 hours and 47 minutes to fly from SEA to Kingsford Smith Intl. Airport (SYD). But hey, there's always a silver lining. You're going to have more than enough time to binge-watch that new show!
Are there non-stop flights between SEA and SYD?
We'll get straight to the point — you won't find any direct flights between Seattle and Sydney. But you can travel with plenty of airlines with one stopover. Check out Air New Zealand, United Airlines, and Virgin Atlantic.
What airlines fly non-stop from Sea-Tac Airport to Kingsford Smith Intl. Airport (SYD)?
Sorry to have to break it to you, but there aren't any direct flights that go between SEA and Sydney Airport. Nope, none. Plan for at least one stopover. It may take a tad longer to get there, but it'll be worth it.
How many flights are flown between SEA and Sydney Airport?
Have your credit card at the ready, because you've got 6 daily flights there for the taking between SEA and Kingsford Smith Intl. Airport (SYD). Get moving — Sydney is waiting!
What are the cheapest days to book a flight?
Looking at lastminute.com.au travel demand in 2021, Wednesdays and Sundays are often the best days to book flights, when prices are generally at their cheapest. You may be tempted to wait to finalise your booking on Saturdays, but our data tells us ticket prices are actually highest on Saturdays. Something to consider when planning your next holiday!
What is the cheapest month to fly?
Here's the lowdown on the lowest airfares: May is the cheapest month to fly. When looking at 2021 flight demand on lastminute.com.au, flights departing in May generally have the lowest ticket prices. As for the most expensive month to fly, our demand data found that on average, airfares are highest in December.
How far in advance can you book a flight?
Itching to book your dream trip? We totally get it. You can start looking at flights on lastminute.com.au as early as 12 months in advance, but just keep in mind some airlines may not release all their available fares that early. But good news for last minute travellers, with 2021 lastminute.com.au data proving spontaneous travellers can still bag a bargain with some of the cheapest airfares appearing just 1 week prior to travel.*According to flight demand on lastminute.com.au from January to December 2021. Savings are subject to change and may vary depending on selections made.
Seattle - Tacoma Intl. to Kingsford Smith Intl. Flight
Origin airport
Seattle - Tacoma Intl.
Origin city name
Seattle
Destination airport
Kingsford Smith Intl.
Destination city name
Sydney
Distance
12399 km

Last Minute Seattle to Sydney Flights

If you’re searching for cheap Seattle to Sydney flights, we’ve got you covered. Whether you’re travelling for business or booking a holiday getaway, Lastminute.com.au sources discount airfares to get you from Seattle to Sydney, for less.

Booking a flight should be easy and we’re here to help. Use our simple search tool to find early bird fares or cheap last minute flights, including great economy deals or business class tickets. We make it easy to compare arrival and departure times, find check in information, as well as provide flight status details and round the clock customer support. Even if you’ve left getting from Seattle to Sydney to the last second, finding a flight is easy with Lastminute.com.au!

Top Picks

*Prices are "from" prices based on the lowest available fare on the sample travel dates for one adult and will be confirmed prior to any payment being made. The price is not guaranteed until paid in full by cleared funds and your tickets are issued. Fees may apply for checked baggage. There may be an additional fee based on your payment type and flight selected. Total purchase price, inclusive of any applicable fees, is displayed on the flight details page prior to booking confirmation. Blackout dates and other restrictions may apply. Fares may be non-refundable (subject to applicable laws) and are not transferable. Name changes may not be permitted.Offers are subject to availability and may be discontinued without notice. Conditions apply.