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$570+ 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 2/21. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — ADL
Feb 7 — Feb 141
Sat 2/7
Sat 2/14
1 adult, Economy
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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 January 8, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Gurufare
3 stars

Round-trip from

$966
(Air Canada)

One-way from

$570
(Kiwi.com)
Provider with most accurate pricing for Seattle/Tacoma Intl-Adelaide flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Adelaide flights.
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From Washington to Adelaide
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One-way flight from Washington to Adelaide
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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 January 8, 2026.

This Air Canada deal was found by Cheapflights users on 1/5. 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.
Wed 2/47:05 pmPDX - ADL
2 stops29h 15mMultiple Airlines
Wed 2/116:10 amADL - PDX
2 stops30h 50mMultiple Airlines
Deal found 1/5$966
This Air Canada deal was found by Cheapflights users on 1/7. 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.
Mon 2/97:05 pmPDX - ADL
2 stops32h 55mAir Canada
Thu 2/196:00 amADL - PDX
2 stops27h 10mAir Canada
Deal found 1/7$997
This Air Canada deal was found by Cheapflights users on 1/7. 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.
Wed 2/258:00 pmSEA - ADL
2 stops32h 00mMultiple Airlines
Fri 3/67:05 amADL - SEA
2 stops20h 56mMultiple Airlines
Deal found 1/7$1,013
This Air Canada deal was found by Cheapflights users on 1/5. 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.
Fri 2/207:05 pmPDX - ADL
2 stops24h 30mMultiple Airlines
Fri 2/276:10 amADL - PDX
2 stops30h 50mMultiple Airlines
Deal found 1/5$1,029
This Air Canada deal was found by Cheapflights users on 1/6. 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.
Fri 2/208:00 pmSEA - ADL
2 stops23h 35mMultiple Airlines
Fri 2/276:10 amADL - SEA
2 stops31h 36mMultiple Airlines
Deal found 1/6$1,029
This Air Canada deal was found by Cheapflights users on 1/6. 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.
Mon 3/95:50 amSEA - ADL
2 stops38h 35mAir Canada
Sun 3/226:10 amADL - SEA
2 stops33h 26mAir Canada
Deal found 1/6$1,037
This Gotogate deal was found by Cheapflights users on 1/7. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/217:05 pmPDX - ADL
2 stops29h 35mMultiple Airlines
Sat 2/284:10 pmADL - PDX
2 stops35h 35mMultiple Airlines
Deal found 1/7$1,086
This Air Canada deal was found by Cheapflights users on 1/6. 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.
Thu 3/123:40 pmSEA - ADL
2 stops28h 45mAir Canada
Mon 3/236:10 amADL - SEA
2 stops20h 51mAir Canada
Deal found 1/6$1,087
This Air Canada deal was found by Cheapflights users on 1/5. 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 2/153:40 pmSEA - ADL
2 stops33h 00mAir Canada
Thu 2/196:00 amADL - SEA
2 stops31h 46mAir Canada
Deal found 1/5$1,090
This Air Canada deal was found by Cheapflights users on 1/7. 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.
Thu 3/57:05 pmPDX - ADL
2 stops24h 20mAir Canada
Mon 3/96:00 amADL - PDX
2 stops30h 00mAir Canada
Deal found 1/7$1,091
This Air Canada deal was found by Cheapflights users on 1/6. 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.
Mon 3/98:00 pmSEA - ADL
2 stops29h 40mAir Canada
Wed 3/256:10 amADL - SEA
2 stops26h 21mAir Canada
Deal found 1/6$1,112
This United Airlines deal was found by Cheapflights users on 1/6. 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.
Mon 3/95:20 pmSEA - ADL
1 stop21h 40mUnited Airlines
Wed 3/251:55 pmADL - SEA
1 stop27h 03mUnited Airlines
Deal found 1/6$1,115

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 January 8, 2026.
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

Wed 2/4

7:05 pm-6:50 pm

2 stops29h 15m

Adelaide

Wed 2/11

6:10 am-6:30 pm

2 stops30h 50m

$966

PortlandAdelaide

PDX - ADL

PDXADL

Portland

Fri 2/20

7:05 pm-2:05 pm

2 stops24h 30m

Adelaide

Fri 2/27

6:10 am-6:30 pm

2 stops30h 50m

$1,029

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Wed 3/11

5:50 am-6:10 pm

2 stops42h 50m

Adelaide

Mon 3/23

6:10 am-7:16 pm

2 stops30h 36m

$1,037

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Tue 3/10

8:00 pm-1:55 pm

2 stops24h 25m

Adelaide

Mon 3/23

6:10 am-10:06 pm

2 stops33h 26m

$1,037

PortlandAdelaide

PDX - ADL

PDXADL

Portland

Sat 2/21

7:05 pm-7:10 pm

2 stops29h 35m

Adelaide

Sat 2/28

4:10 pm-9:15 am

2 stops35h 35m

$1,086

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Sun 2/15

3:40 pm-7:10 pm

2 stops33h 00m

Adelaide

Thu 2/19

6:00 am-7:16 pm

2 stops31h 46m

$1,090

PortlandAdelaide

PDX - ADL

PDXADL

Portland

Thu 3/5

7:05 pm-1:55 pm

2 stops24h 20m

Adelaide

Mon 3/9

6:00 am-6:30 pm

2 stops30h 00m

$1,091

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Mon 3/9

8:00 pm-7:10 pm

2 stops29h 40m

Adelaide

Wed 3/25

6:10 am-3:01 pm

2 stops26h 21m

$1,112

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Tue 3/10

8:00 pm-1:55 pm

2 stops24h 25m

Adelaide

Wed 3/25

6:10 am-9:31 am

2 stops20h 51m

$1,112

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Mon 3/9

5:20 pm-8:30 am

1 stop21h 40m

Adelaide

Wed 3/25

1:55 pm-11:28 pm

1 stop27h 03m

$1,115

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/7

Showing 1-10 of 31 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
No data available for this route at this time. Please check back soon.

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 $1,037, Air Canada can have you in Adelaide from State of Washington in 42h 50m. There are 8332 mi between State of Washington and Adelaide.

  • 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

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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 January 8, 2026.
AirlineCheapestAverageFlexibilityOn-time
Qantas AirwaysCheapest$1,088Average$1,166FlexibilityNo cancel feeOn-time74%

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