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Cheap flights from Washington to Adelaide from $1,697

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 15/9. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — ADL
9 Sep — 16 Sep1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Washington to Adelaide

Enter your travel dates to find the best prices.

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 10 August 2026.

Tue 15/915:00 -
2 stops27h 40m
Tue 22/920:00 -
2 stops39h 02m
Deal found 5/8$1,697
Tue 17/1119:05 -
2 stops24h 30m
Sun 22/1106:10 -
2 stops26h 57m
Deal found 5/8$1,718
Tue 8/915:00 -
2 stops28h 20m
Mon 14/919:00 -
2 stops31h 35m
Deal found 10/8$1,784
Fri 21/807:20 -
2 stops22h 45m
Sat 5/912:40 -
2 stops27h 43m
Deal found 10/8$1,803
Tue 29/919:25 -
2 stops23h 10m
Tue 6/1006:10 -
2 stops32h 21m
Deal found 8/8$1,806
Mon 5/1018:43 -
2 stops23h 37m
Sun 25/1006:10 -
2 stops23h 40m
Deal found 7/8$1,808
Tue 8/913:10 -
2 stops29h 25m
Mon 14/920:00 -
3 stops42h 01m
Deal found 10/8$1,812
Sat 8/807:26 -
2 stops35h 19m
Sat 15/817:10 -
2 stops46h 41m
Deal found 7/8$1,822
Wed 30/913:30 -
2 stops40h 35m
Thu 15/1012:00 -
2 stops29h 02m
Deal found 7/8$1,866
Wed 21/1007:00 -
2 stops35h 25m
Sun 25/1014:30 -
2 stops25h 52m
Deal found 5/8$1,868

Find flight deals from Washington to Adelaide

Keep the following information in mind while searching for Washington to Adelaide flight deals. Data was last updated 10 August 2026.

Round-trip from

$1,697
Air Canada
  • Air Canada
  • 15/9-22/9
  • 4 total stops
  • 66h 42m total
  • Washington to Adelaide
Search Deals

Cheapflights Fare Finder

 
Customise 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 647,157 searches. Data last updated 10 August 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 return flight

SeattleAdelaide

SEA Seattle/Tacoma Intl - ADL Adelaide

SEAADL

Seattle/Tacoma Intl

Tue 29/9

19:25-11:05

2 stops23h 10m

Adelaide

Tue 6/10

06:10-21:01

2 stops32h 21m

$1,806

SeattleAdelaide

SEA Seattle/Tacoma Intl - ADL Adelaide

SEAADL

Seattle/Tacoma Intl

Wed 21/10

07:00-13:40

2 stops37h 10m

Adelaide

Sun 25/10

14:30-22:52

2 stops25h 52m

$1,870

SeattleAdelaide

SEA Seattle/Tacoma Intl - ADL Adelaide

SEAADL

Seattle/Tacoma Intl

Thu 1/10

12:16-10:55

2 stops30h 09m

Adelaide

Thu 15/10

07:40-21:01

2 stops30h 51m

$1,953

SeattleAdelaide

SEA Seattle/Tacoma Intl - ADL Adelaide

SEAADL

Seattle/Tacoma Intl

Fri 21/8

16:25-15:00

1 stop30h 05m

Adelaide

Sat 5/9

22:00-12:45

1 stop31h 15m

$2,075

SeattleAdelaide

SEA Seattle/Tacoma Intl - ADL Adelaide

SEAADL

Seattle/Tacoma Intl

Sat 19/9

08:41-15:00

2 stops37h 49m

Adelaide

Sat 26/9

22:00-12:45

1 stop31h 15m

$2,140

SeattleAdelaide

SEA Seattle/Tacoma Intl - ADL Adelaide

SEAADL

Seattle/Tacoma Intl

Tue 17/11

15:50-10:00

2 stops47h 40m

Adelaide

Sun 22/11

22:00-11:40

1 stop32h 10m

$2,141

SeattleAdelaide

SEA Seattle/Tacoma Intl - ADL Adelaide

SEAADL

Seattle/Tacoma Intl

Thu 1/10

16:25-15:00

1 stop30h 05m

Adelaide

Thu 15/10

22:00-12:25

1 stop31h 55m

$2,144
Fastest return journey

SeattleAdelaide

SEA Seattle/Tacoma Intl - ADL Adelaide

SEAADL

Seattle/Tacoma Intl

Wed 30/9

07:20-22:35

2 stops22h 45m

Adelaide

Mon 5/10

06:00-19:50

2 stops31h 20m

$2,196

SeattleAdelaide

SEA Seattle/Tacoma Intl - ADL Adelaide

SEAADL

Seattle/Tacoma Intl

Wed 30/9

16:59-19:05

2 stops33h 36m

Adelaide

Tue 6/10

19:10-22:37

2 stops44h 57m

$2,221

SeattleAdelaide

SEA Seattle/Tacoma Intl - ADL Adelaide

SEAADL

Seattle/Tacoma Intl

Tue 29/9

16:25-15:00

1 stop30h 05m

Adelaide

Tue 6/10

19:20-12:25

2 stops34h 35m

$2,411

Flights are sorted by cheapest return flights first.

Deals found on 8/8

Showing 1-10 of 11 resultsSorted by cheapest first
1
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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 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 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?

    Adelaide (ADL), located 6.6 km from the city centre, is the airport you fly into when you book flights from Washington to Adelaide.

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

    United Airlines and Qatar Airways can get you from State of Washington to Adelaide in just under 23h 10m. Your travel time can differ by up to 6h 55m. State of Washington and Adelaide are separated by a distance of 13409 km. 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 holiday 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

Travelling to a place near Adelaide?

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

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Deals for Washington to Adelaide 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 Adelaide?

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 Adelaide from Washington.

Can Cheapflights find flights from Washington to Adelaide with no change fees?

Yes, we can. To see specific flights from Washington to Adelaide with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Washington to Adelaide become cheaper?

Yes, Cheapflights offers price alerts on Washington to Adelaide 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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