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Cheap flights from Adelaide to Washington from $1,431

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 25/11. Fares are subject to change and may not be available on all flights or dates of travel.
ADL — SEA
30 Nov — 7 Dec1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Adelaide to Washington

Keep the following information in mind while searching for Adelaide to Washington flight deals. Data was last updated 31 October 2025.

Round-trip from

$1,431

Popular in

October

Cheapest in

November

Average price

$2,704
Qantas Airways
  • Qantas Airways
  • 25/11-5/12
  • 4 total stops
  • 59h 49m total
  • Adelaide to Washington
Search Deals
Highest demand for flights based on searches. 1% potential increase in price ($57 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($108 potential savings vs. average return price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

Find flight deals from Adelaide to Washington

Enter your travel dates to find the best prices.

Cheapest flights from Adelaide to Washington
Explore the most affordable flight options available from Adelaide to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 31 October 2025.

Tue 25/1113:40ADL - SEA
2 stops25h 13mQantas Airways
Fri 5/1216:59SEA - ADL
2 stops34h 36mQantas Airways
Deal found 30/10$1,431
Mon 15/1214:55ADL - SEA
1 stop28h 25mUnited Airlines
Sat 17/117:10SEA - ADL
1 stop21h 50mUnited Airlines
Deal found 29/10$1,526
Mon 15/1214:55ADL - SEA
1 stop22h 07mUnited Airlines
Tue 20/109:25SEA - ADL
2 stops34h 00mUnited Airlines
Deal found 29/10$1,791
Sat 20/1214:55ADL - SEA
1 stop24h 42mVirgin Australia
Sun 11/106:18SEA - ADL
2 stops34h 07mVirgin Australia
Deal found 29/10$1,902
Tue 25/1111:40ADL - SEA
2 stops36h 05mMultiple Airlines
Fri 5/1215:48SEA - ADL
3 stops45h 57mMultiple Airlines
Deal found 30/10$2,213
Mon 15/1219:00ADL - SEA
2 stops41h 50mQantas Airways
Mon 22/1214:50SEA - ADL
2 stops24h 30mQantas Airways
Deal found 30/10$2,316
Mon 15/1214:55ADL - SEA
1 stop24h 35mUnited Airlines
Mon 22/1212:44SEA - ADL
2 stops26h 16mUnited Airlines
Deal found 30/10$2,348
Wed 17/1219:00ADL - SEA
2 stops41h 48mQantas Airways
Tue 20/117:53SEA - ADL
2 stops25h 17mQantas Airways
Deal found 30/10$2,356
Mon 15/1219:00ADL - SEA
2 stops41h 50mQantas Airways
Tue 20/117:53SEA - ADL
2 stops25h 17mQantas Airways
Deal found 31/10$2,365
Sun 14/1211:55ADL - PDX
2 stops39h 50mMultiple Airlines
Sun 21/1219:00PDX - ADL
2 stops32h 35mMultiple Airlines
Deal found 30/10$2,622
Sun 14/1217:10ADL - PDX
2 stops30h 45mHawaiian Airlines
Sun 21/1214:47PDX - ADL
3 stops46h 58mHawaiian Airlines
Deal found 30/10$3,100
Sat 13/1214:55ADL - PDX
1 stop38h 38mVirgin Australia
Sat 20/1219:45PDX - ADL
1 stop19h 15mVirgin Australia
Deal found 29/10$3,183

Cheapflights Fare Finder

 
Customise your flight search to find flights from Adelaide to Washington 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 31 October 2025.
Use the filters below to find and compare flights from Adelaide to Washington that are best for you.

Fly from

Adelaide

Fly to

Washington

Route

Depart

Return

Price

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Wed 11/3

13:55-16:14

1 stop19h 49m

Seattle/Tacoma Intl

Sun 15/3

19:10-08:30

2 stops43h 50m

$1,442

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Mon 15/12

14:55-21:46

2 stops25h 21m

Seattle/Tacoma Intl

Sat 17/1

12:25-09:30

2 stops26h 35m

$1,532

AdelaidePortland

ADL - PDX

ADLPDX

Adelaide

Thu 12/3

06:10-14:40

2 stops26h 00m

Portland

Sun 15/3

15:15-13:55

2 stops29h 10m

$1,552

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Wed 17/12

14:55-18:28

1 stop22h 03m

Seattle/Tacoma Intl

Tue 20/1

12:35-13:55

2 stops30h 50m

$1,791

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Mon 15/12

14:55-18:32

1 stop22h 07m

Seattle/Tacoma Intl

Tue 20/1

09:25-13:55

2 stops34h 00m

$1,791

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Wed 11/3

10:15-08:10

1 stop39h 25m

Seattle/Tacoma Intl

Sun 15/3

09:45-08:50

1 stop29h 35m

$1,931

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Mon 15/12

19:00-18:20

2 stops41h 50m

Seattle/Tacoma Intl

Mon 22/12

14:50-09:50

2 stops24h 30m

$2,316

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Mon 15/12

14:55-00:50

1 stop28h 25m

Seattle/Tacoma Intl

Mon 22/12

13:35-09:30

1 stop25h 25m

$2,348

AdelaidePortland

ADL - PDX

ADLPDX

Adelaide

Sun 14/12

11:55-09:15

2 stops39h 50m

Portland

Sun 21/12

19:00-22:05

2 stops32h 35m

$2,622

AdelaidePortland

ADL - PDX

ADLPDX

Adelaide

Sat 13/12

14:55-11:03

1 stop38h 38m

Portland

Sat 20/12

19:45-09:30

1 stop19h 15m

$3,183

Flights are sorted by cheapest return flights first.

Deals found on 29/10

Showing 1-10 of 15 results
1
2

Best time to book a flight from Adelaide to Washington

Have a flexible travel schedule? Discover the best time to fly to Washington from Adelaide 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 Adelaide to Washington

What is the cheapest month to book a flight from Adelaide to State of Washington?

Currently, August is the cheapest month in which you can book a flight from Adelaide to State of Washington (average of $933). Flying from Adelaide to State of Washington in October is currently the most expensive (average of $2,704). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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

Find hourly flight availability from Adelaide to Washington. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 31 October 2025.

A simple way to save on the total cost of your ticket is to fly from Adelaide to State of Washington in the afternoon. If you’re flexible enough to do this you can expect to save up to 25% on your trip compared to booking a flight at midday.

Reviews of airlines servicing Washington

Get insights into the airlines that provide service to Washington. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Washington. Reviews last updated 31 October 2025.
Read reviews from past customers who have flown with Singapore Airlines, Virgin Australia, andQantas Airways from Adelaide to Washington. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Singapore Airlines
8.1
Very Good
1,388 reviews
Check prices

Overall

8.1

Boarding

8.3

Entertainment

8.0

Crew

8.6

Comfort

8.0

Food

7.7

Reviews

1 / 20
10.0
Excellent

Juliet,Oct 2025

PUS - SIN

Very kind staff to arrange my luggage and really appreciate all help.
Singapore Airlines
8.1
Very Good
1,388 reviews
Singapore Airlines
8.1
Very Good
1,388 reviews
Check prices

Overall

8.1

Boarding

8.3

Entertainment

8.0

Crew

8.6

Comfort

8.0

Food

7.7

Reviews

1 / 20
10.0
Excellent

Juliet,Oct 2025

PUS - SIN

Very kind staff to arrange my luggage and really appreciate all help.
Virgin Australia
7.6
Good
422 reviews
Singapore Airlines
8.1
Very Good
1,388 reviews
Check prices

Overall

8.1

Boarding

8.3

Entertainment

8.0

Crew

8.6

Comfort

8.0

Food

7.7

Reviews

1 / 20
10.0
Excellent

Juliet,Oct 2025

PUS - SIN

Very kind staff to arrange my luggage and really appreciate all help.
Qantas Airways
7.5
Good
926 reviews
Singapore Airlines
8.1
Very Good
1,388 reviews
Check prices

Overall

8.1

Boarding

8.3

Entertainment

8.0

Crew

8.6

Comfort

8.0

Food

7.7

Reviews

1 / 20
10.0
Excellent

Juliet,Oct 2025

PUS - SIN

Very kind staff to arrange my luggage and really appreciate all help.
United Airlines
7.4
Good
8,995 reviews
Singapore Airlines
8.1
Very Good
1,388 reviews
Check prices

Overall

8.1

Boarding

8.3

Entertainment

8.0

Crew

8.6

Comfort

8.0

Food

7.7

Reviews

1 / 20
10.0
Excellent

Juliet,Oct 2025

PUS - SIN

Very kind staff to arrange my luggage and really appreciate all help.
Air Canada
7.1
Good
10,385 reviews
Singapore Airlines
8.1
Very Good
1,388 reviews
Check prices

Overall

8.1

Boarding

8.3

Entertainment

8.0

Crew

8.6

Comfort

8.0

Food

7.7

Reviews

1 / 20
10.0
Excellent

Juliet,Oct 2025

PUS - SIN

Very kind staff to arrange my luggage and really appreciate all help.

Related info for your journey

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

    Most people fly from Adelaide (ADL) if they book a flight from Adelaide to Washington. Adelaide is conveniently located just 6.6 km from Adelaide’s city centre.

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

    For as low as $1,442, United Airlines can have you in State of Washington from Adelaide in 19h 49m. The distance from Adelaide to State of Washington is about 13409 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

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

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

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

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

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

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

  • What is the cheapest month to book a flight from Adelaide to State of Washington?

    Currently, August is the cheapest month in which you can book a flight from Adelaide to State of Washington (average of $933). Flying from Adelaide to State of Washington in October is currently the most expensive (average of $2,704). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Adelaide to Washington

See prices for flight routes from nearby airports that may be better suited for you.
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Top 6 airlines flying from Adelaide to Washington

Discover the top 6 airlines that operate flights from Adelaide to Washington. 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 647,157 searches. Data last updated 31 October 2025.
AirlineCheapestAverageFlexibilityOn-time
Air New ZealandCheapest$934Average$1,543FlexibilityNo cancel feeOn-time78%
Search Air New Zealand flights
Qantas AirwaysCheapest$1,364Average$1,805FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights
Singapore AirlinesCheapest$1,416Average$1,665FlexibilityNo cancel feeOn-time81%
Search Singapore Airlines flights
Air CanadaCheapest$1,467Average$1,633FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Virgin AustraliaCheapest$1,723Average$1,990FlexibilityNo cancel feeOn-time80%
Search Virgin Australia flights
United AirlinesCheapest$1,735Average$2,044FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Adelaide to Washington?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Washington from Adelaide today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from Adelaide to Washington?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Adelaide to Washington.

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

Certainly. Search results for flights to Washington from Adelaide shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

Yes! Start tracking prices for Adelaide to Washington flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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