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Cheap flights from Washington to Australia from $573

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington to Australia departing on 12/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap return flights

Enter your travel dates to find the best prices.
Air Canada Logo
20:00 - 07:45
SEA
-
BNE
18h 45m
1 stop
Air Canada Logo
10:00 - 18:30
BNE
-
SEA
25h 30m
1 stop
$1,146Air Canada
Tue, 10 Mar - Sun, 10 May
Air Canada Logo
09:55 - 08:45
SEA
-
BNE
28h 50m
1 stop
Air Canada Logo
10:45 - 15:01
BNE
-
SEA
22h 16m
1 stop
$1,154Air Canada
Thu, 19 Feb - Wed, 4 Mar
Air Canada Logo
15:40 - 08:45
SEA
-
BNE
23h 05m
1 stop
Air Canada Logo
10:45 - 22:57
BNE
-
SEA
30h 12m
1 stop
$1,156Air Canada
Thu, 19 Feb - Mon, 23 Feb
Multiple Airlines Logo
09:55 - 08:45
SEA
-
BNE
28h 50m
1 stop
Multiple Airlines Logo
12:05 - 09:15
BNE
-
SEA
39h 10m
2 stops
$1,240Multiple Airlines
Thu, 19 Feb - Mon, 23 Feb
Multiple Airlines Logo
20:00 - 07:45
SEA
-
BNE
18h 45m
1 stop
Multiple Airlines Logo
20:40 - 09:15
BNE
-
SEA
29h 35m
2 stops
$1,247Multiple Airlines
Tue, 10 Mar - Sun, 10 May
ANA Logo
20:00 - 13:30
SEA
-
BNE
23h 30m
2 stops
ANA Logo
09:45 - 09:35
BNE
-
SEA
16h 50m
1 stop
$1,250ANA
Thu, 5 Mar - Thu, 12 Mar
Singapore Airlines Logo
19:20 - 11:05
SEA
-
MEL
22h 45m
2 stops
Singapore Airlines Logo
06:00 - 09:15
MEL
-
SEA
20h 15m
2 stops
$1,334Singapore Airlines
Wed, 6 May - Tue, 12 May
Singapore Airlines Logo
19:20 - 11:05
SEA
-
MEL
22h 45m
2 stops
Singapore Airlines Logo
06:00 - 09:15
MEL
-
SEA
20h 15m
2 stops
$1,335Singapore Airlines
Thu, 7 May - Thu, 14 May
Qantas Airways Logo
15:45 - 06:10
GEG
-
SYD
19h 25m
1 stop
Qantas Airways Logo
19:15 - 21:12
SYD
-
GEG
43h 57m
2 stops
$1,349Qantas Airways
Tue, 3 Mar - Tue, 10 Mar
Qantas Airways Logo
15:45 - 06:10
GEG
-
SYD
19h 25m
1 stop
Qantas Airways Logo
13:05 - 16:54
SYD
-
GEG
21h 49m
1 stop
$1,384Qantas Airways
Tue, 3 Mar - Tue, 10 Mar

Delta flights from State of Washington to Australia

Our best Delta deals on State of Washington to Australia flight tickets
Delta
3 Mar
GEG06:25Spokane
29h 25m
1 stop
SYD06:50Sydney Kingsford Smith
10 Mar
SYD13:15Sydney Kingsford Smith
26h 05m
1 stop
GEG21:20Spokane
$1,409
Delta
29 June
GEG16:15Spokane
21h 35m
1 stop
SYD06:50Sydney Kingsford Smith
24 July
SYD09:15Sydney Kingsford Smith
23h 26m
1 stop
GEG15:41Spokane
$1,411
Delta
3 Mar
GEG11:22Spokane
24h 28m
2 stops
SYD06:50Sydney Kingsford Smith
10 Mar
SYD09:40Sydney Kingsford Smith
32h 22m
2 stops
GEG00:02Spokane
$1,416

United Airlines flights from State of Washington to Australia

Our best United Airlines deals on State of Washington to Australia flight tickets
United Airlines
14 Feb
PDX15:40Portland
23h 20m
1 stop
MEL10:00Melbourne
18 Feb
MEL13:00Melbourne
20h 48m
1 stop
PDX14:48Portland
$1,456
United Airlines
20 Feb
PDX19:57Portland
19h 03m
1 stop
MEL10:00Melbourne
28 Feb
MEL13:00Melbourne
20h 54m
1 stop
PDX14:54Portland
$1,458
United Airlines
24 Feb
PDX13:18Portland
25h 42m
2 stops
MEL10:00Melbourne
7 Mar
MEL13:00Melbourne
23h 56m
2 stops
PDX17:56Portland
$1,462

momondo Fare Finder

 
Customise your flight search to find flights from State of Washington to Australia 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, momondo users made 78,305 searches. Data last updated 8 February 2026.
Use the filters below to find and compare flights from Washington to Australia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleBrisbane

SEA - BNE

SEABNE

Seattle/Tacoma Intl

Tue 10/3

20:00-07:45

1 stop18h 45m

Brisbane

Sun 10/5

10:00-18:30

1 stop25h 30m

$1,146

SeattleBrisbane

SEA - BNE

SEABNE

Seattle/Tacoma Intl

Thu 19/2

09:55-08:45

1 stop28h 50m

Brisbane

Wed 4/3

10:45-15:01

1 stop22h 16m

$1,154

SeattleBrisbane

SEA - BNE

SEABNE

Seattle/Tacoma Intl

Thu 19/2

15:40-08:45

1 stop23h 05m

Brisbane

Mon 23/2

10:45-22:57

1 stop30h 12m

$1,156

SeattleBrisbane

SEA - BNE

SEABNE

Seattle/Tacoma Intl

Thu 19/2

09:55-08:45

1 stop28h 50m

Brisbane

Mon 23/2

12:05-09:15

2 stops39h 10m

$1,240

SeattleBrisbane

SEA - BNE

SEABNE

Seattle/Tacoma Intl

Tue 10/3

20:00-07:45

1 stop18h 45m

Brisbane

Sun 10/5

20:40-09:15

2 stops29h 35m

$1,247

SeattleBrisbane

SEA - BNE

SEABNE

Seattle/Tacoma Intl

Thu 5/3

20:00-13:30

2 stops23h 30m

Brisbane

Thu 12/3

09:45-09:35

1 stop16h 50m

$1,250

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Wed 6/5

19:20-11:05

2 stops22h 45m

Melbourne

Tue 12/5

06:00-09:15

2 stops20h 15m

$1,334

SeattleMelbourne

SEA - MEL

SEAMEL

Seattle/Tacoma Intl

Thu 7/5

19:20-11:05

2 stops22h 45m

Melbourne

Thu 14/5

06:00-09:15

2 stops20h 15m

$1,335

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Tue 3/3

15:45-06:10

1 stop19h 25m

Sydney Kingsford Smith

Tue 10/3

19:15-21:12

2 stops43h 57m

$1,349

SpokaneSydney

GEG - SYD

GEGSYD

Spokane

Tue 3/3

15:45-06:10

1 stop19h 25m

Sydney Kingsford Smith

Tue 10/3

13:05-16:54

1 stop21h 49m

$1,384

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Australia from

How to get the cheapest flight ticket from State of Washington to Australia

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Australia?

In general, August is the cheapest month to fly from State of Washington to Australia. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $1,205. If you don’t want to visit Australia in August, then you should wait until September to fly from State of Washington, when ticket prices are also cheap, with an average price of $1,225.

How far in advance should I book a flight to Australia?

You are more likely to see cheaper flights to Australia from State of Washington when booking weeks ahead of your departure date. In general, you can expect to find flights to Australia for around $1,505 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Australia from State of Washington for as low as $1,248 on momondo.

Can stopping save me money on State of Washington to Australia flights?

You could potentially save up to 27% on your flight if you consider stops on a State of Washington to Australia flight.

Cheap State of Washington to Australia flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from State of Washington to Australia

Fastest flight time

18h 09m

Direct flights

None
The fastest flight from State of Washington to Australia takes 18h 09m
There are no direct flights from State of Washington to Australia. There are no popular flight routes from State of Washington to Australia.
Search flight deals

  • When did momondo last update prices for flights from Washington to Australia?

    Prices for flights from Washington to Australia were last updated today.

  • How many operators does momondo search for flights from Washington to Australia?

  • How old do you have to be to fly from Washington to Australia?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and stopovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington to Australia.

  • What documentation or ID do you need to fly to Australia?

    The necessary travel and health documents for your Australia trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's licence and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from State of Washington to Australia

Compare and see reviews for airlines that fly from State of Washington to Australia with momondo
Airline
Rating
Free cancellation
Price
Air CanadaPriceFrom $616Free cancellationRating
7.1
10,697 reviews
Search Air Canada flights
United AirlinesPriceFrom $1,138Free cancellationRating
7.4
9,254 reviews
Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Washington to Australia?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Washington to Australia for you.

Can I find flights from Washington to Australia with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Washington to Australia flights to just show those with flexible booking policies.

How can momondo help me find flights from Washington to Australia?

Once all potential Washington to Australia flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Washington to Australia right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Washington to Australia flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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