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Adelaide

$608+ Cheap flights from Washington to Adelaide (ADL)

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 1/20. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — ADL
Dec 13 — Dec 201
Sat 12/13
Sat 12/20
1 adult, Economy
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Find flight deals from Washington to Adelaide

Cheapest flights from Washington to Adelaide
Explore the most affordable flight options available from Washington to Adelaide. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 13, 2025.

This CheapOair deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/286:20 amPDX - ADL
2 stops41h 10mQantas Airways
Tue 1/137:05 amADL - PDX
2 stops25h 06mQantas Airways
Deal found 11/11$1,372
This oojo deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/105:59 pmSEA - ADL
2 stops29h 16mQantas Airways
Sun 12/218:35 amADL - SEA
2 stops28h 38mQantas Airways
Deal found 11/11$1,619
This United Airlines deal was found by Cheapflights users on 11/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/287:30 amPDX - ADL
2 stops32h 55mUnited Airlines
Tue 1/136:00 amADL - PDX
3 stops31h 11mUnited Airlines
Deal found 11/13$1,765
This United Airlines deal was found by Cheapflights users on 11/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/277:12 pmSEA - ADL
1 stop19h 48mUnited Airlines
Sat 1/38:30 amADL - SEA
2 stops42h 23mUnited Airlines
Deal found 11/12$1,995
This United Airlines deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/2611:59 pmSEA - ADL
2 stops39h 01mUnited Airlines
Fri 1/28:30 amADL - SEA
2 stops28h 45mUnited Airlines
Deal found 11/11$2,150
This Trip.com deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/104:05 pmSEA - ADL
1 stop34h 15mEmirates
Sun 12/2110:40 pmADL - SEA
1 stop32h 25mEmirates
Deal found 11/11$2,741
This Air Canada deal was found by Cheapflights users on 11/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/288:00 pmSEA - ADL
2 stops31h 35mMultiple Airlines
Sun 1/47:00 pmADL - SEA
2 stops33h 01mMultiple Airlines
Deal found 11/12$2,748
This Qatar Airways deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/104:05 pmSEA - ADL
2 stops35h 50mQatar Airways
Sun 12/2110:00 pmADL - SEA
1 stop32h 10mQatar Airways
Deal found 11/11$2,773
This United Airlines deal was found by Cheapflights users on 11/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/277:45 pmPDX - ADL
1 stop19h 15mUnited Airlines
Sat 1/32:55 pmADL - PDX
2 stops37h 36mUnited Airlines
Deal found 11/12$2,774
This Mytrip deal was found by Cheapflights users on 11/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/275:50 amSEA - ADL
3 stops33h 35mMultiple Airlines
Sat 1/36:30 pmADL - SEA
3 stops33h 31mMultiple Airlines
Deal found 11/12$3,360
This oojo deal was found by Cheapflights users on 11/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/2712:49 amPDX - ADL
2 stops45h 46mQatar Airways
Tue 1/1310:00 pmADL - PDX
2 stops37h 20mQatar Airways
Deal found 11/13$3,459
This Mytrip deal was found by Cheapflights users on 11/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/273:15 pmPDX - ADL
2 stops25h 10mMultiple Airlines
Sat 1/34:30 pmADL - PDX
3 stops35h 15mMultiple Airlines
Deal found 11/12$3,768

Cheap flight deals from Washington to Adelaide

Keep the following information in mind while searching for Washington to Adelaide flight deals. Data was last updated November 13, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Gurufare
3 stars

Round-trip from

$1,169
(FlightHub)

One-way from

$706
(Kiwi.com)

Popular in

January

Cheapest in

September

Average price

$1,088
Provider with most accurate pricing for Seattle/Tacoma Intl-Adelaide flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Adelaide flights.
Search Deals
From Washington to Adelaide
Search Deals
One-way flight from Washington to Adelaide
Search Deals
Highest demand for flights based on searches. 16% potential increase in price ($273 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($87 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from 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, Cheapflights users made 2,558,603 searches. Data last updated November 13, 2025.
Use the filters below to find and compare flights from Washington to Adelaide that are best for you.

Fly from

Washington

Fly to

Adelaide

Route

Depart

Return

Price

PortlandAdelaide

PDX - ADL

PDXADL

Portland

Sun 1/11

5:50 pm-1:40 pm

2 stops25h 20m

Adelaide

Sat 1/31

6:05 am-1:41 pm

2 stops26h 06m

$1,169

PortlandAdelaide

PDX - ADL

PDXADL

Portland

Thu 1/15

10:52 am-9:50 am

2 stops28h 28m

Adelaide

Sat 2/7

6:05 am-1:41 pm

2 stops26h 06m

$1,178

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Sun 3/15

5:50 am-1:55 pm

2 stops38h 35m

Adelaide

Thu 3/19

6:10 am-7:16 pm

2 stops30h 36m

$1,181

PortlandAdelaide

PDX - ADL

PDXADL

Portland

Sun 12/28

6:20 am-6:00 pm

2 stops41h 10m

Adelaide

Tue 1/13

7:05 am-1:41 pm

2 stops25h 06m

$1,393

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Thu 1/8

5:53 pm-1:40 pm

2 stops25h 17m

Adelaide

Thu 1/15

6:35 am-12:29 pm

2 stops24h 24m

$1,399

PortlandAdelaide

PDX - ADL

PDXADL

Portland

Thu 1/15

7:00 am-8:15 am

2 stops30h 45m

Adelaide

Sat 2/7

5:10 pm-5:31 am

2 stops30h 51m

$1,427

PortlandAdelaide

PDX - ADL

PDXADL

Portland

Thu 1/15

3:50 pm-9:30 am

1 stop23h 10m

Adelaide

Sat 2/7

2:55 pm-2:46 pm

1 stop18h 21m

$1,429

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Wed 12/10

5:59 pm-5:45 pm

2 stops29h 16m

Adelaide

Sun 12/21

8:35 am-6:43 pm

2 stops28h 38m

$1,619

PortlandAdelaide

PDX - ADL

PDXADL

Portland

Sun 12/28

7:30 am-10:55 am

2 stops32h 55m

Adelaide

Tue 1/13

6:00 am-6:41 pm

3 stops31h 11m

$1,765

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Wed 1/7

12:10 am-7:25 am

2 stops36h 45m

Adelaide

Thu 1/15

7:05 am-2:31 pm

2 stops25h 56m

$1,784

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/13

Showing 1-10 of 20 results
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Best time to book a flight from Washington to Adelaide

Have a flexible travel schedule? Discover the best time to fly to Adelaide from Washington with our price prediction graph.
Estimated round-trip 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 Adelaide

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

Find hourly flight availability from Washington to Adelaide. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 13, 2025.

One of the essential ways to save on airfare from State of Washington to Adelaide is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight in the morning could potentially save you up to 34% on airfare.

Related info for your journey

Find useful and relevant information for your journey from Washington to Adelaide. 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 Adelaide from Washington?

    Located just 4.1 mi from the city center, Adelaide (ADL) is the airport most travelers will use when flying to Adelaide from Washington.

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

    For as low as $1,169, Qantas Airways can have you in Adelaide from State of Washington in 25h 20m. There are 8275 mi between State of Washington and Adelaide. This flight may include one or multiple stops.

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

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

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

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

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

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

See more FAQs

Traveling to a place near Adelaide?

Book flights to Adelaide if you plan to visit one of these locations
Glenelg

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from Washington to Adelaide

Discover the top airline that operate flights from Washington to Adelaide. 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 2,558,603 searches. Data last updated November 13, 2025.
AirlineCheapestAverageFlexibilityOn-time
Qantas AirwaysCheapest$1,088Average$1,166FlexibilityNo cancel feeOn-time74%

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