Cheap Flights from Seattle to Sydney

Compare Seattle to Sydney flight deals

Find the cheapest month or even day of the year to fly to Sydney

Book the best Sydney fare with no extra fees

Flight deals from Seattle to Sydney Airport

Looking for a cheap last-minute deal or the best return flight from Seattle to Sydney Airport? If you want to travel next month, return fares start from ر.ق.‏ 3,224. Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Seattle to Sydney

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Seattle to Sydney flights are currently cheapest in September.

Seattle to Sydney: Alternative routes

Compare routes from Seattle to Sydney below. You may find an airport to fly into that's cheaper, faster, or easier than Sydney.

Seattle to Sydney: Flight information

The things to know before you go.
Cheapest flight foundر.ق.‏ 1,492
Cheapest month to flySeptember

Finding cheap flights from Seattle to Sydney: Frequently asked questions

The best price we found for a return flight from Seattle to Sydney is ر.ق.‏ 3,138. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Seattle to Sydney. But we found flights with one stop from ر.ق.‏ 3,138.
As of March 2026, there are no flights flying from Seattle to Sydney.
The cheapest month to fly from Seattle to Sydney is usually September.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Seattle to Sydney Airport on Friday, 18 September 2026.
No airlines currently offer direct flights between Seattle and Sydney Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Sydney but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Sydney is around 40 days in advance, so don’t leave your flight to the last minute.
The cheapest airline that flies to Sydney is Philippine Airlines .

Travelling from Seattle to Sydney Kingsford Smith International Airport (SYD): What you need to know

  • Sydney Kingsford Smith International Airport is located in Sydney. The city is in the UTC+11 timezone and is 19 hours ahead of Seattle.

  • Arrive at the airport on time so you don't miss your flight from Seattle to SYD. Be there at least two hours ahead for international flights and an hour early for domestic departures to skip the mad dash to your gate.

  • July is a busy month for travelling. If you're taking off then or around a major holiday like Christmas or Thanksgiving, get there even earlier. Aim for at least two hours ahead for domestic flights and as much as four hours for international journeys.

Airports in Seattle

Seattle-Tacoma International Airport (SEA)

  • We make it easy to book cheap flights from Seattle to SYD with a stopover. To explore all the options departing from Seattle-Tacoma International Airport (SEA), uncheck 'Direct flights only.' Then, pick a flight offering a stop long enough to tour your chosen city. Major stopovers between SEA and SYD include:

    • Los Angeles International Airport (LAX)

    • San Francisco International Airport (SFO)

    • Honolulu International Airport (HNL)

  • SEA is about 23 kilometres from central Seattle. If you're catching a taxi, ride-sharing or driving from the centre, it'll take you 25 minutes or so to get there, depending on traffic. If you're using public transport, expect the travel time to be around 35 minutes.

  • Searching for a convenient hotel close to Seattle-Tacoma International Airport? If you've booked an early flight from Seattle to Sydney Kingsford Smith International Airport, these stays will put you moments from your check-in counter:

  • Seattle-Tacoma International Airport scores top marks for on-time performance. 80% of flights that depart SEA land on time.

Seattle Paine Field International Airport (PAE)

  • PAE is about 40 kilometres from central Seattle. It'll take you 40 minutes or so to get to the airport by car from the city centre. Public transport takes roughly 1 hour 30 minutes.

  • Got a crack-of-dawn departure? Think about checking in to one of these hotels near Seattle Paine Field International Airport the day before your Seattle to SYD flight:

  • Most flights that depart Seattle Paine Field International Airport make it to their destination as expected. It boasts a strong on-time performance rate of 80%.

About Sydney Kingsford Smith International Airport (SYD)

Getting from Sydney Kingsford Smith International Airport (SYD) to central Sydney

  • Sydney Kingsford Smith International Airport to the centre of Sydney is roughly 8 kilometres. If you're taking a taxi or renting a car, plan ahead to make your trip as easy as possible. Journey times will vary depending on traffic and the time of day.

  • Travelling on public transport will take you roughly 15 minutes.

How to find the cheapest flights from Seattle to Sydney Kingsford Smith International Airport (SYD)

  • The lowest price we've found for a one-way ticket from Seattle to Sydney Kingsford Smith International Airport is ر.ق.‏ 1,492. For a return flight on this route, the best price is ر.ق.‏ 3,138. Depending on when you want to go and the availability, these fares may change.

  • To find cheap flights from Seattle to SYD, book in advance. Airlines tend to offer their most competitively priced fares when tickets are first released.

  • The 'Whole month' tool shows you the cheapest Seattle to Sydney Kingsford Smith International Airport tickets throughout the entire month. It's an easy way to find a bargain if your trip dates are flexible.

  • Snapping up a cheap plane ticket from Seattle to SYD is easy with Price Alerts. Simply create one of these automatic alerts and we'll let you know when there's a price drop.

  • Tailor your trip using filters. Pick your departure and arrival times, total journey duration and airlines. You can also sort the results by 'Fastest,' 'Best' or 'Cheapest' flights from Seattle to Sydney Kingsford Smith International Airport.

The best time to fly from Seattle to Sydney Kingsford Smith International Airport (SYD)

  • It's time to work out your travel dates for your flight from Seattle to Sydney Kingsford Smith International Airport (SYD). July is the most popular month to visit Sydney. If you like things a bit more low-key, head there in December.

  • Before locking in your Seattle to SYD plane ticket, consider what kind of weather works for you. January is the warmest month in Sydney, with temperatures ranging from 17ºC to 32ºC.

  • Search for cheap tickets from Seattle to Sydney Kingsford Smith International Airport in July if you'd rather travel during cooler conditions. Temperatures are at their lowest then, ranging between 5ºC and 19ºC.

More about Sydney

  • When it comes to looking for somewhere to lay your head, you'll find the best stays in Sydney right here. Explore these options once you've booked your flight from Seattle to Sydney Kingsford Smith International Airport:

  • Sydney Harbour Bridge and Sydney Harbour are just a couple of the top attractions to put on your Sydney travel itinerary. Keep the sightseeing going at Sydney Opera House.

Explore more of Australia

  • Canberra is just one of the many places in Australia waiting to be explored once you've seen Sydney. Around 241 kilometres away to the southwest, its top attractions include National Gallery of Australia, National Portrait Gallery and Museum of Australian Democracy.

  • Newcastle is another favourite destination in Australia and is around 129 kilometres northeast of Sydney. No trip is complete without visiting Merewether Beach, Nobbys Beach and Newcastle Beach.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.