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

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

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

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.

United
Delta
United
Air Canada
Alaska Airlines
All Nippon Airways
American Airlines
Asiana Airlines
Qantas Airways
Turkish Airlines

Alternative airports near Sydney

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

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

September is typically the cheapest month to fly

From AU$1,093 - AU$1,850 per traveller.

Frequently asked questions

How much does a flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.) cost?
One-way flights typically cost between $1,610 and $15,578 and return flights often range between $3,056 and $14,735. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Anaa (AAA) to Toronto, ON (YYZ-Pearson Intl.) ticket fares go up or down.
How do I find cheap flights from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.)?
To find a cheap flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
How many flights per day from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.)?
There are approximately 59 connecting flights per day from Seattle - Tacoma Intl. (SEA) to Kingsford Smith Intl. (SYD). Some common connection points include Los Angeles Intl. (LAX), San Francisco Intl. (SFO), and Vancouver Intl. (YVR).
What is the earliest flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.)?
The earliest flight from Seattle - Tacoma Intl. (SEA) to Kingsford Smith Intl. (SYD) typically departs at approximately 12:10 AM local time, operated by CI. This is a seasonal service active in January, February, March, November, and December. An early departure like this can help you make the most of your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.)?
You'll typically find the most flights from Seattle - Tacoma Intl. (SEA) to Kingsford Smith Intl. (SYD) on a Wednesday, with around 66 flights available. This gives you plenty of options for your travel plans. Major airlines on this route include Alaska Airlines, United Airlines, and American Airlines. Flight schedules are consistent throughout the week.
What are the most popular departure times for flights from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.)?
The most popular departure times for flights from Seattle - Tacoma Intl. (SEA) to Kingsford Smith Intl. (SYD) are in the arvo, from 3pm to 6pm. Around 32% of passengers reckon this time's best. Heaps of major carriers, including Qantas, United Airlines and Emirates, offer flights during this window. This timing works well because it allows you to have a productive morning before heading to the airport, and you'll arrive in Sydney ready to start your day.
How long does it take to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.)?
A flight from SEA to SYD with a layover takes around 24 hours, with the route covering approximately 7,750 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.)?
Select the "Business class" and "First class" filters when looking for SEA to SYD flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.) flight with Expedia?
It's easy to earn miles on a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia. *Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Sydney from Seattle - Tacoma Intl. (SEA)?
From Seattle - Tacoma Intl. (SEA), you can fly directly into Kingsford Smith Intl. (SYD) to reach Sydney. Some flights may connect through major hubs like San Francisco Intl. (SFO), Vancouver Intl. (YVR), Los Angeles Intl. (LAX) before reaching Sydney. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.) at the last minute?
Typically, booking a last minute flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.) flight and hotel package?
Securing a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.)?
If you booked your Seattle, WA (SEA-Seattle - Tacoma Intl.) to Sydney, NSW (SYD-Kingsford Smith Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Seattle - Tacoma Intl.
Destination airport
Kingsford Smith Intl.
Airlines serving
Air Canada, Air New Zealand, Alaska Airlines, All Nippon Airways, American Airlines, Asiana Airlines, Cathay Pacific, China Airlines, Delta, Emirates, Korean Air, Philippine Airlines, Qantas Airways, Qatar Airways, Singapore Airlines, United
Return price
AU$1,523
Distance
12399 km

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