Flights from Seattle to Sydney

Explore the best deals

Discover the cheapest flights from Seattle to Sydney

Filter by

Sat 12 Dec - Thu 17 Dec

Prime price per passenger

Tue 22 Dec - Tue 29 Dec

Prime price per passenger

Prime price per passenger

Prime price per passenger

Prime price per passenger

Prime price per passenger

Prime price per passenger

The prices shown on this page were available within the last 20 days for the specified periods and should not be considered the final price offered. Please note that availability and prices are subject to change.

Cheapest time to fly from Seattle to Sydney

If you’re planning to fly this route soon, keep in mind that the lowest fares are usually available in the middle of November. Take advantage of this period to save on your flight tickets and make the most of your trip. Please note that prices may change after your search.

Filter by

week: 9 Nov - 15 Nov

Flights from just £460

£460

£1,346

£2,356

£973

£1,496

£1,059

£1,091

£1,082

£578

£1,174

£3,368

£2,984

NovemberDecemberJanuary

Flight Duration28 h and 30 mFlights between Seattle and Sydney take, on average, 28 h and 30 m minutes, but the time can vary according to other factors

Cheapest flight£657Cheapest price for a flight between Seattle and Sydney found by our customers in the last 72 hours

Origin airportSeattle-Tacoma International AirportWhen flying from Seattle to Sydney

Destination airportSydney Kingsford Smith AirportFor the route from Seattle to Sydney

High seasonMarchAccording to search data from our customers, March is the busiest time to fly from Seattle to Sydney

One-way average Price£1469The average price for a flight Seattle - Sydney at Opodo is £1469, based on the price of last 6 months

Best time to bookMarchAccording to real data October is the most popular time to book a flight to Sydney when departing from Seattle

Exchange rate

1 GBP = 1.95 AUD

1 AUD = 0.51 GBP

Last checked on Mon 09/11

Distance: 7,749 mi

Seattle airports

Seattle-Tacoma International Airport (SEA)How far from city centre: 11 mi

Sydney airports

Sydney Kingsford Smith Airport (SYD)How far from city centre: 5 mi

Book your Seattle to Sydney flight

Search direct and connecting flights from Seattle to Sydney (Australia) with Opodo. When your results appear, sort them by timing or fare and book whichever option fits your plans best.

The cheapest fare booked on this route in recent days was £657, although the price you're shown will vary with your travel dates and departure times.

Flying non-stop from Seattle to Sydney takes roughly 17 h and 8 m, whereas journeys with a layover will take longer.

Airports and airlines on the Seattle–Sydney route

Plan your trip with confidence by checking the relevant airports and comparing the airlines that fly this route.

Departure airport: Seattle-Tacoma International Airport (SEA)
Arrival airport: Sydney Kingsford Smith Airport (SYD)

The weather in Sydney

The best time to go may come down to the kind of weather you most enjoy. In Sydney, temperatures average around 26ºC in the warmest months and roughly 9ºC in the coldest. Bear this in mind when deciding what to pack and planning time outdoors.

Highs: up to 27ºC
Lows: down to 9ºC
Hottest month: January
Coldest month: July
Driest month: September
Wettest month: April

Tips for cheaper flights from Seattle to Sydney

A few ways to bring down the cost of your flight from Seattle to Sydney:

Flexible dates: check fares across two or three departure days. Going a day earlier or later can make a real difference to what you pay.
Baggage allowance: see what's included in each fare before booking, so you're not stung by unexpected charges at the airport.
Airports on your route: double-check which airports you'll fly from and into, particularly if the city has more than one. It makes it easier to plan transfers and work out the full cost of getting around.

After a bigger saving? Book a Flight + Hotel package to combine the two in a single booking and unlock exclusive discounts on your stay in Sydney. Adding car hire to the same booking can save you money too.

Frequently asked questions about flights from Seattle to Sydney

On average, how much is the price of a flight from Seattle to Sydney?

When you fly from Seattle to Sydney the average price is £1469. However, this price depends on many other factors such as seasonality or how far in advance the route has been booked.

How can I find cheap flights from Seattle to Sydney at Opodo?

The cheapest price for a flight from Seattle to Sydney is 657 £. At Opodo we use different machine learned based methodologies to find our costumers the best option available, considering airline combinations, stopovers and direct flights as well as different criteria for inbound and outbound journeys.

When is the best time to book a flight from Seattle to Sydney?

The most popular months to book a flight from Seattle to Sydney are October, July and June, based on the searches of our customers.

When is the best time to travel from Seattle to Sydney?

The best time of the year to go to Sydney when flying from Seattle depends on several preference factors like climate, seasonality and, of course, price. When it comes to popularity, December is the top 1º month to fly to Sydney from Seattle in terms of searches from our customer, followed by October and September. If you prefer to avoid high peaks of turism, however, and escape a crowded period, May, April and July are the months with less volume of searchs for the route Seattle - Sydney.

How long does the flight take to go from Seattle to Sydney?

The total flight time between Seattle and Sydney is of around 28 h and 30 m on average, considering an average distance of 7,748.73 mi, for both direct and indirect flights for the route (which may have 1 or more stops in other cities in between).

How is the weather in Sydney compared to Seattle?

While in Seattle temperatures can reach an average of 18º ºC in summer, Sydney can experience temperatures up to 23º ºC during the hot season. In winter, however, the weather shows around 14º ºC in Sydney, compared to the 6º ºC average in Seattle.

Which airports have flights between Seattle and Sydney?

The main airport route flying between Seattle and Sydney is: Seattle-Tacoma International Airport (SEA) to Sydney Kingsford Smith Airport(SYD). This route is covered by the following airline(s):

Which are the airlines with flights from Seattle to Sydney?

Alaska Airlines

Air Canada
All Nippon Airways

Plan your trip

Other popular routesPopular Flight Routes