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Cheap flights from Washington to Sydney from $568

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 31/3. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SYD
16 Jan — 23 Jan1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Washington to Sydney

Enter your travel dates to find the best prices.

Cheapest flights from Washington to Sydney
Explore the most affordable flight options available from Washington to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 December 2025.

Mon 29/1206:20PDX - SYD
1 stop31h 40mQantas Airways
Tue 13/119:15SYD - PDX
2 stops37h 20mQantas Airways
Deal found 15/12$1,526
Wed 31/1220:00SEA - SYD
1 stop18h 35mAir Canada
Tue 10/211:20SYD - SEA
1 stop26h 56mAir Canada
Deal found 16/12$1,707
Sat 27/1220:00SEA - SYD
1 stop18h 35mAir Canada
Sat 17/119:15SYD - SEA
2 stops33h 16mAir Canada
Deal found 16/12$1,727
Sat 27/1206:20PDX - SYD
1 stop31h 40mQantas Airways
Wed 4/311:20SYD - PDX
1 stop21h 05mQantas Airways
Deal found 17/12$1,862
Thu 25/1206:20PDX - SYD
1 stop31h 40mQantas Airways
Sun 11/122:00SYD - PDX
2 stops34h 41mQantas Airways
Deal found 17/12$1,893
Sat 27/1211:59PDX - SYD
1 stop25h 31mDelta
Wed 4/310:40SYD - PDX
1 stop24h 30mDelta
Deal found 15/12$1,915
Mon 29/1219:45PDX - SYD
1 stop39h 35mUnited Airlines
Tue 13/111:50SYD - PDX
1 stop30h 03mUnited Airlines
Deal found 16/12$1,927
Wed 31/1220:00SEA - SYD
2 stops26h 40mMultiple Airlines
Tue 10/208:00SYD - SEA
2 stops20h 15mMultiple Airlines
Deal found 15/12$1,953
Sun 28/1220:00SEA - SYD
1 stop18h 35mMultiple Airlines
Wed 7/107:05SYD - SEA
2 stops21h 10mMultiple Airlines
Deal found 16/12$2,107
Tue 30/1206:00SEA - SYD
1 stop30h 25mMultiple Airlines
Tue 6/120:40SYD - SEA
2 stops41h 09mMultiple Airlines
Deal found 15/12$2,313
Wed 24/1217:54SEA - SYD
1 stop20h 21mUnited Airlines
Wed 31/1211:50SYD - SEA
2 stops25h 16mUnited Airlines
Deal found 15/12$2,340
Fri 26/1205:25SEA - SYD
2 stops32h 05mDelta
Wed 31/1210:40SYD - SEA
1 stop19h 05mDelta
Deal found 15/12$2,348

Find flight deals from Washington to Sydney

Keep the following information in mind while searching for Washington to Sydney flight deals. Data was last updated 17 December 2025.

Round-trip from

$1,324

One-way from

$568

Popular in

December

Cheapest in

August

Average price

$2,295
Delta
  • Delta
  • 3/3-10/3
  • 2 total stops
  • 55h 25m total
  • Washington to Sydney
Search Deals
Philippine Airlines
  • Philippine Airlines
  • 31/3
  • 1 total stop
  • 39h 50m total
  • Washington to Sydney
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($431 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($95 potential savings vs. average return price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Washington to Sydney that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 647,157 searches. Data last updated 17 December 2025.
Use the filters below to find and compare flights from Washington to Sydney that are best for you.

Fly from

Washington

Fly to

Sydney

Route

Depart

Return

Price

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Fri 30/1

13:48-09:15

2 stops24h 27m

Sydney Kingsford Smith

Fri 6/2

14:00-19:16

1 stop24h 16m

$1,324

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Tue 3/3

06:30-06:50

1 stop29h 20m

Sydney Kingsford Smith

Tue 10/3

13:15-21:20

1 stop26h 05m

$1,324

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Sat 18/4

20:00-11:25

2 stops22h 25m

Sydney Kingsford Smith

Mon 11/5

06:00-09:15

2 stops20h 15m

$1,578

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Thu 5/2

06:53-06:20

1 stop28h 27m

Sydney Kingsford Smith

Mon 9/2

12:10-19:16

1 stop26h 06m

$1,668

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Wed 14/1

12:57-07:00

1 stop23h 03m

Sydney Kingsford Smith

Wed 21/1

12:10-15:44

1 stop22h 34m

$1,677

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Sat 31/1

19:00-08:30

2 stops42h 30m

Sydney Kingsford Smith

Tue 17/2

10:40-14:44

2 stops23h 04m

$1,685

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Sat 31/1

19:00-08:30

2 stops42h 30m

Sydney Kingsford Smith

Mon 16/2

10:40-12:33

2 stops20h 53m

$1,685

PortlandSydney

PDX - SYD

PDXSYD

Portland

Tue 24/2

13:32-06:50

2 stops22h 18m

Sydney Kingsford Smith

Sun 15/3

09:40-13:12

2 stops21h 32m

$1,685

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Mon 2/2

17:53-09:00

1 stop20h 07m

Sydney Kingsford Smith

Sat 14/2

11:20-17:00

1 stop24h 40m

$1,730

SeattleSydney

SEA - SYD

SEASYD

Seattle/Tacoma Intl

Fri 30/1

06:00-09:50

2 stops32h 50m

Sydney Kingsford Smith

Fri 13/2

13:55-19:58

2 stops25h 03m

$1,730

Flights are sorted by cheapest return flights first.

Deals found on 16/12

Showing 1-10 of 47 results
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Best time to book a flight from Washington to Sydney

Have a flexible travel schedule? Discover the best time to fly to Sydney from Washington with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Washington to Sydney

What is the cheapest month to book a flight from State of Washington to Sydney?

Currently, July is the cheapest month in which you can book a flight from State of Washington to Sydney (average of $773). Flying from State of Washington to Sydney in December is currently the most expensive (average of $1,273). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from WA to SYD?

Find hourly flight availability from Washington to Sydney. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 17 December 2025.

It’s typically best to fly out from State of Washington to Sydney in the afternoon. Doing so could potentially save you 26% on the flight price compared to flying at midday, which is usually more expensive.

Related info for your journey

Find useful and relevant information for your journey from Washington to Sydney. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Sydney from Washington?

    Most people fly into Sydney Kingsford Smith (SYD) if they book a flight to Sydney from Washington. Kingsford Smith is conveniently located just 7.5 km from Sydney’s city centre.

  • How long is the flight from State of Washington to Sydney?

    There are many flights that can get you from State of Washington to Sydney in 20h 07m. Fly via United Airlines, Delta, or Qantas Airways to get the fastest option. The distance between State of Washington and Sydney is about 12463 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • What are the cheapest airlines to fly from State of Washington to Sydney one-way?

    The cheapest airline one-way is Alaska Airlines, with whom users have recently found tickets for as low as $531. However, be on the lookout for offers from Qantas Airways and ANA, as they are both options that can get you from State of Washington to Sydney for a low price.

  • What are the most popular routes from State of Washington to Sydney?

    When deciding which route to take from State of Washington to Sydney, consider Seattle/Tacoma Intl - Sydney Kingsford Smith, Portland - Sydney Kingsford Smith or Spokane - Sydney Kingsford Smith, as they are the most popular.

  • Can I find deals for flights from Washington to Sydney that include hotel bookings?

    Yes. In addition to deals on Washington to Sydney flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Washington to Sydney?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington to Sydney.

  • Can I find deals for business class flights from Washington to Sydney?

    Yes. Cheapflights offers flight deals from Washington to Sydney by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from State of Washington to Sydney?

    Currently, July is the cheapest month in which you can book a flight from State of Washington to Sydney (average of $773). Flying from State of Washington to Sydney in December is currently the most expensive (average of $1,273). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near Sydney?

Book flights to Sydney if you plan to visit one of these locations
Parramatta
Wollongong
Katoomba
Penrith
Terrigal
Manly
Randwick
Lithgow
Coogee
Leura
Cronulla
Bondi Beach

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Top 3 airlines flying from Washington to Sydney

Discover the top 3 airlines that operate flights from Washington to Sydney. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 647,157 searches. Data last updated 17 December 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$1,204Average$2,182FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapest$1,266Average$1,748FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Alaska AirlinesCheapest$1,284Average$1,840FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Washington to Sydney?

Deals for Washington to Sydney flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Washington to Sydney?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Sydney from Washington.

Can Cheapflights find flights from Washington to Sydney with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Washington to Sydney, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Washington to Sydney become cheaper?

Yes, Cheapflights offers price alerts on Washington to Sydney flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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