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Cheap flights from Washington to Sydney from $423

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 26/11. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SYD
30 Nov — 7 Dec1
1 adult
1 adult, Economy, 0 bags

Find 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 31 October 2025.

Thu 30/1015:10GEG - SYD
2 stops23h 50mAmerican Airlines
Thu 6/1111:20SYD - GEG
2 stops21h 35mAmerican Airlines
Deal found 30/10$1,317
Thu 30/1013:47GEG - SYD
2 stops25h 18mUnited Airlines
Thu 6/1112:10SYD - GEG
1 stop17h 32mUnited Airlines
Deal found 29/10$1,328
Sat 29/1110:05SEA - SYD
2 stops39h 10mMultiple Airlines
Sat 6/1221:40SYD - SEA
1 stop36h 00mMultiple Airlines
Deal found 30/10$1,392
Sun 23/1121:30SEA - SYD
1 stop41h 20mMultiple Airlines
Sat 6/1221:40SYD - SEA
1 stop26h 35mMultiple Airlines
Deal found 29/10$1,456
Wed 26/1115:40SEA - SYD
1 stop33h 35mMultiple Airlines
Wed 3/1211:20SYD - SEA
1 stop22h 11mMultiple Airlines
Deal found 29/10$1,459
Tue 25/1110:05SEA - SYD
2 stops39h 10mMultiple Airlines
Tue 2/1221:40SYD - SEA
1 stop36h 00mMultiple Airlines
Deal found 29/10$1,466
Mon 17/1113:21PDX - SYD
1 stop24h 39mMultiple Airlines
Mon 24/1111:20SYD - PDX
1 stop24h 00mMultiple Airlines
Deal found 29/10$1,511
Mon 24/1110:05SEA - SYD
2 stops39h 10mMultiple Airlines
Mon 1/1219:15SYD - SEA
2 stops45h 54mMultiple Airlines
Deal found 28/10$1,547
Sun 30/1120:00SEA - SYD
1 stop18h 35mAir Canada
Sun 14/1211:20SYD - SEA
1 stop17h 11mAir Canada
Deal found 31/10$1,556
Wed 26/1119:00PDX - SYD
1 stop19h 35mAir Canada
Wed 3/1208:30SYD - PDX
2 stops19h 45mAir Canada
Deal found 29/10$1,596
Mon 17/1115:15PDX - SYD
2 stops28h 25mAir Canada
Mon 24/1111:20SYD - PDX
1 stop16h 55mAir Canada
Deal found 29/10$1,699
Fri 14/1119:00PDX - SYD
1 stop19h 35mAir Canada
Thu 27/1111:20SYD - PDX
1 stop22h 20mAir Canada
Deal found 29/10$1,709

Cheap flight deals from Washington to Sydney

Keep the following information in mind while searching for Washington to Sydney flight deals. Data was last updated 31 October 2025.

Round-trip from

$1,267

One-way from

$423

Popular in

December

Cheapest in

August

Average price

$1,468
ANA
  • ANA
  • 2/3-18/3
  • 2 total stops
  • 68h 05m total
  • Washington to Sydney
Search Deals
ANA
  • ANA
  • 26/11
  • 1 total stop
  • 33h 35m total
  • Washington to Sydney
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($348 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($58 potential savings vs. average return price).
Search Deals
Average for round-trip flights in October 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 31 October 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

Mon 23/3

15:45-09:00

2 stops23h 15m

Sydney Kingsford Smith

Thu 16/4

17:45-22:56

2 stops22h 11m

$1,354

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Mon 23/3

07:00-09:15

1 stop32h 15m

Sydney Kingsford Smith

Thu 16/4

10:20-21:24

1 stop28h 04m

$1,358

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Fri 23/1

16:10-06:20

2 stops43h 10m

Sydney Kingsford Smith

Fri 30/1

12:10-10:44

1 stop17h 34m

$1,364

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Tue 24/3

10:49-06:10

2 stops25h 21m

Sydney Kingsford Smith

Tue 14/4

17:45-22:56

2 stops22h 11m

$1,386

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Tue 24/3

12:30-09:15

1 stop26h 45m

Sydney Kingsford Smith

Tue 14/4

09:30-15:19

2 stops22h 49m

$1,389

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Mon 23/3

07:00-09:15

1 stop32h 15m

Sydney Kingsford Smith

Mon 13/4

09:30-15:19

2 stops22h 49m

$1,389

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Tue 31/3

11:40-07:55

2 stops26h 15m

Sydney Kingsford Smith

Tue 14/4

09:30-15:19

2 stops22h 49m

$1,406

PortlandSydney

PDX - SYD

PDXSYD

Portland

Tue 17/3

15:15-08:35

1 stop23h 20m

Sydney Kingsford Smith

Tue 24/3

10:20-09:15

1 stop16h 55m

$1,582

PortlandSydney

PDX - SYD

PDXSYD

Portland

Tue 10/2

15:15-09:35

1 stop23h 20m

Sydney Kingsford Smith

Sat 28/2

21:20-09:15

2 stops30h 55m

$1,613

PortlandSydney

PDX - SYD

PDXSYD

Portland

Fri 6/2

09:50-09:35

1 stop28h 45m

Sydney Kingsford Smith

Mon 23/2

11:20-09:15

1 stop16h 55m

$1,646

Flights are sorted by cheapest return flights first.

Deals found on 30/10

Showing 1-10 of 58 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 $827). Flying from State of Washington to Sydney in January is currently the most expensive (average of $1,297). 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 31 October 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 23h 15m. Fly via American Airlines, United Airlines, or Air Canada to get the fastest option. The distance between State of Washington and Sydney is about 12796 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 ANA, with whom users have recently found tickets for as low as $446. However, be on the lookout for offers from Philippine Airlines and United Airlines, 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 $827). Flying from State of Washington to Sydney in January is currently the most expensive (average of $1,297). 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
Manly
Terrigal
Randwick
Lithgow
Coogee
Leura
Bondi Beach
Cronulla

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Top 2 airlines flying from Washington to Sydney

Discover the top 2 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 31 October 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$1,216Average$2,019FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapest$1,280Average$1,752FlexibilityNo cancel feeOn-time67%
Search Air Canada 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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