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Cheap flights from Washington to Adelaide from $713

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 Adelaide departing on 5/17. 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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0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
Air Canada Logo
3:30 pm - 12:10 pm
PDX
-
ADL
27h 10m
2 stops
Air Canada Logo
6:10 am - 2:40 pm
ADL
-
PDX
26h 00m
2 stops
$1,127Air Canada
Sun, Oct 4 - Thu, Oct 29
Multiple Airlines Logo
8:50 pm - 10:35 pm
SEA
-
ADL
33h 15m
2 stops
Multiple Airlines Logo
7:10 pm - 11:59 pm
ADL
-
SEA
45h 19m
2 stops
$1,298Multiple Airlines
Thu, Jun 4 - Thu, Jun 11
Multiple Airlines Logo
8:20 am - 11:05 am
PDX
-
ADL
34h 15m
2 stops
Multiple Airlines Logo
9:15 am - 8:46 pm
ADL
-
PDX
28h 01m
2 stops
$1,300Multiple Airlines
Thu, Sep 10 - Sat, Sep 19
Multiple Airlines Logo
5:34 pm - 10:35 pm
PDX
-
ADL
36h 31m
2 stops
Multiple Airlines Logo
12:00 pm - 6:11 am
ADL
-
PDX
34h 41m
2 stops
$1,307Multiple Airlines
Sun, Jun 7 - Sun, Jun 14
United Airlines Logo
5:15 am - 10:55 am
PDX
-
ADL
37h 10m
3 stops
United Airlines Logo
8:00 pm - 12:09 pm
ADL
-
PDX
32h 39m
2 stops
$1,368United Airlines
Sun, Jun 7 - Sun, Jun 14
Qantas Airways Logo
6:00 pm - 3:45 pm
PDX
-
ADL
28h 15m
2 stops
Qantas Airways Logo
6:00 am - 5:12 pm
ADL
-
PDX
29h 42m
2 stops
$1,559Qantas Airways
Fri, Oct 30 - Fri, Nov 27
Air New Zealand Logo
10:45 am - 10:55 am
SEA
-
ADL
31h 40m
2 stops
Air New Zealand Logo
12:05 pm - 6:32 pm
ADL
-
SEA
22h 57m
2 stops
$1,588Air New Zealand
Mon, Jun 22 - Fri, Jul 17
United Airlines Logo
5:15 am - 10:55 am
PDX
-
ADL
37h 10m
3 stops
United Airlines Logo
6:05 am - 12:07 pm
ADL
-
PDX
22h 32m
2 stops
$1,610United Airlines
Sun, Jun 28 - Tue, Jul 7
United Airlines Logo
7:05 pm - 11:05 am
SEA
-
ADL
23h 30m
2 stops
United Airlines Logo
8:00 pm - 9:10 pm
ADL
-
SEA
41h 40m
3 stops
$1,823United Airlines
Thu, Jun 4 - Thu, Jun 11
Air New Zealand Logo
6:00 am - 5:45 pm
SEA
-
ADL
43h 15m
2 stops
Air New Zealand Logo
6:25 am - 6:32 pm
ADL
-
SEA
28h 37m
3 stops
$1,939Air New Zealand
Mon, Jul 6 - Fri, Jul 24

United Airlines flights from State of Washington to Adelaide

Our best United Airlines deals on State of Washington to Adelaide flight tickets
United Airlines
May 18
PDX3:59 pmPortland
29h 16m
2 stops
ADL1:45 pmAdelaide
May 25
ADL6:05 amAdelaide
27h 12m
2 stops
PDX4:47 pmPortland
$1,329
United Airlines
Jun 7
PDX5:15 amPortland
37h 10m
3 stops
ADL10:55 amAdelaide
Jun 14
ADL8:00 pmAdelaide
32h 39m
2 stops
PDX12:09 pmPortland
$1,368
United Airlines
Jun 28
PDX5:15 amPortland
37h 10m
3 stops
ADL10:55 amAdelaide
Jul 7
ADL6:05 amAdelaide
22h 32m
2 stops
PDX12:07 pmPortland
$1,610

Air New Zealand flights from State of Washington to Adelaide

Our best Air New Zealand deals on State of Washington to Adelaide flight tickets
Air New Zealand
Jun 22
SEA10:45 amSeattle/Tacoma Intl
31h 40m
2 stops
ADL10:55 amAdelaide
Jul 17
ADL12:05 pmAdelaide
22h 57m
2 stops
SEA6:32 pmSeattle/Tacoma Intl
$1,588
Air New Zealand
Sep 10
PDX7:13 pmPortland
24h 12m
2 stops
ADL11:55 amAdelaide
Sep 19
ADL5:10 pmAdelaide
42h 26m
3 stops
PDX7:06 pmPortland
$1,864
Air New Zealand
Jul 6
SEA6:00 amSeattle/Tacoma Intl
43h 15m
2 stops
ADL5:45 pmAdelaide
Jul 24
ADL6:25 amAdelaide
28h 37m
3 stops
SEA6:32 pmSeattle/Tacoma Intl
$1,939

momondo Fare Finder

 
Customize your flight search to find flights from State of Washington to Adelaide 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 832,500 searches. Data last updated May 9, 2026.
Use the filters below to find and compare flights from Washington to Adelaide that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

PortlandAdelaide

PDX - ADL

PDXADL

Portland

Sun 10/4

3:30 pm-12:10 pm

2 stops27h 10m

Adelaide

Thu 10/29

6:10 am-2:40 pm

2 stops26h 00m

$1,127

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Thu 6/4

8:50 pm-10:35 pm

2 stops33h 15m

Adelaide

Thu 6/11

7:10 pm-11:59 pm

2 stops45h 19m

$1,298

PortlandAdelaide

PDX - ADL

PDXADL

Portland

Thu 9/10

8:20 am-11:05 am

2 stops34h 15m

Adelaide

Sat 9/19

9:15 am-8:46 pm

2 stops28h 01m

$1,300

PortlandAdelaide

PDX - ADL

PDXADL

Portland

Sun 6/7

5:34 pm-10:35 pm

2 stops36h 31m

Adelaide

Sun 6/14

12:00 pm-6:11 am

2 stops34h 41m

$1,307

PortlandAdelaide

PDX - ADL

PDXADL

Portland

Sun 6/7

5:15 am-10:55 am

3 stops37h 10m

Adelaide

Sun 6/14

8:00 pm-12:09 pm

2 stops32h 39m

$1,368

PortlandAdelaide

PDX - ADL

PDXADL

Portland

Fri 10/30

6:00 pm-3:45 pm

2 stops28h 15m

Adelaide

Fri 11/27

6:00 am-5:12 pm

2 stops29h 42m

$1,559

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Mon 6/22

10:45 am-10:55 am

2 stops31h 40m

Adelaide

Fri 7/17

12:05 pm-6:32 pm

2 stops22h 57m

$1,588

PortlandAdelaide

PDX - ADL

PDXADL

Portland

Sun 6/28

5:15 am-10:55 am

3 stops37h 10m

Adelaide

Tue 7/7

6:05 am-12:07 pm

2 stops22h 32m

$1,610

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Thu 6/4

7:05 pm-11:05 am

2 stops23h 30m

Adelaide

Thu 6/11

8:00 pm-9:10 pm

3 stops41h 40m

$1,823

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Mon 7/6

6:00 am-5:45 pm

2 stops43h 15m

Adelaide

Fri 7/24

6:25 am-6:32 pm

3 stops28h 37m

$1,939

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from State of Washington to Adelaide

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

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

You could potentially save up to 62% on your flight if you consider stops on a State of Washington to Adelaide flight.

Cheap State of Washington to Adelaide flight deals and tips

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

Fastest flight time

21h 45m

Direct flights

None
The fastest flight from State of Washington to Adelaide takes 21h 45m
There are no direct flights from State of Washington to Adelaide. There are no popular flight routes from State of Washington to Adelaide.
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Frequently asked questions about flying from Washington to Adelaide

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

    Prices for flights from Washington to Adelaide Airport were last updated today.

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

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington to Adelaide Airport.

  • What documentation or ID do you need to fly to Adelaide Airport?

    The necessary travel and health documents for your Adelaide Airport 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 license 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 Adelaide

Compare and see reviews for airlines that fly from State of Washington to Adelaide with momondo
Airline
Rating
Free Cancellation
Price
Qantas AirwaysPriceFrom $1,088Free CancellationRating
7.5
1,033 reviews
Search Qantas Airways flights

Traveling to a place near Adelaide?

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Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Washington to Adelaide. momondo saves you time and could save you money on your trip.

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

Yes. All flights to Adelaide from Washington on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Washington to Adelaide.

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

Yes. momondo can track prices for Washington to Adelaide 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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