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Cheap flights from Washington to Adelaide from $988

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 15/6. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — ADL
6 May — 13 May1
1 adult

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 1 May 2025.

Round-trip from

$2,037

One-way from

$988

Popular in

January

Cheapest in

March

Average price

$2,354
Hawaiian Airlines
  • Hawaiian Airlines
  • 23/8-28/8
  • 4 total stops
  • 55h 22m total
  • Washington to Adelaide
Search Deals
Qantas Airways
  • Qantas Airways
  • 15/6
  • 2 total stops
  • 26h 20m total
  • Washington to Adelaide
Search Deals
Highest demand for flights based on searches. 18% potential increase in price ($815 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($154 potential savings vs. average return price).
Search Deals
Average for round-trip flights in May 2025
Search Deals

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 1 May 2025.

Sat 23/808:15SEA - ADL
2 stops32h 10mHawaiian Airlines
Thu 28/816:30ADL - SEA
2 stops23h 12mHawaiian Airlines
Deal found 30/4$2,037
Thu 5/617:59SEA - ADL
2 stops25h 06mMultiple Airlines
Thu 12/612:35ADL - SEA
2 stops21h 49mMultiple Airlines
Deal found 30/4$2,071
Fri 13/614:40SEA - ADL
2 stops28h 55mQantas Airways
Fri 20/612:45ADL - SEA
2 stops25h 30mQantas Airways
Deal found 1/5$2,112
Thu 3/717:14SEA - ADL
2 stops25h 11mUnited Airlines
Wed 30/706:05ADL - SEA
3 stops31h 21mUnited Airlines
Deal found 1/5$2,196
Fri 22/809:05SEA - ADL
2 stops33h 20mAir New Zealand
Thu 28/819:00ADL - SEA
2 stops35h 00mAir New Zealand
Deal found 30/4$2,237
Sat 14/617:59SEA - ADL
2 stops25h 06mFiji Airways
Sat 21/612:35ADL - SEA
2 stops22h 49mFiji Airways
Deal found 30/4$2,268
Sat 23/810:15SEA - ADL
1 stop37h 35mSingapore Airlines
Thu 28/817:35ADL - SEA
2 stops55h 02mSingapore Airlines
Deal found 30/4$2,863
Fri 22/800:59SEA - ADL
3 stops61h 11mQatar Airways
Thu 28/821:40ADL - SEA
1 stop31h 35mQatar Airways
Deal found 30/4$4,023

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 1 May 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

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Sat 23/8

08:15-08:55

2 stops32h 10m

Adelaide

Thu 28/8

16:30-23:12

2 stops23h 12m

$2,037

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Thu 5/6

17:59-11:35

2 stops25h 06m

Adelaide

Thu 12/6

12:35-17:54

2 stops21h 49m

$2,071

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Fri 13/6

14:40-12:05

2 stops28h 55m

Adelaide

Fri 20/6

12:45-21:45

2 stops25h 30m

$2,112

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Thu 3/7

17:14-10:55

2 stops25h 11m

Adelaide

Wed 30/7

06:05-20:56

3 stops31h 21m

$2,196

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Fri 22/8

09:05-10:55

2 stops33h 20m

Adelaide

Thu 28/8

19:00-13:30

2 stops35h 00m

$2,237

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Sat 14/6

17:59-11:35

2 stops25h 06m

Adelaide

Sat 21/6

12:35-18:54

2 stops22h 49m

$2,268

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Sat 23/8

10:15-16:20

1 stop37h 35m

Adelaide

Thu 28/8

17:35-08:07

2 stops55h 02m

$2,863

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Fri 22/8

00:59-06:40

3 stops61h 11m

Adelaide

Thu 28/8

21:40-12:45

1 stop31h 35m

$4,023

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Sun 15/6

17:15-12:05

2 stops26h 20m

$988

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Fri 9/5

05:30-10:55

2 stops36h 55m

$1,366

Flights are sorted by cheapest return flights first.

Deals found on 1/5

Showing 1-10 of 13 results
1
2

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

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

Currently, June is the cheapest month in which you can book a flight from State of Washington to Adelaide (average of $168). Flying from State of Washington to Adelaide in October is currently the most expensive (average of $241). 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.

Rainfall in Adelaide by month

Plan your trip to Adelaide by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Adelaide ranges from 10.0 - 60.0 inches per month. July is typically the wettest month, when rainfall can reach 60.0 mm. January is typically the driest time to visit Adelaide when rainfall is around 10.0 mm.

Temperature in Adelaide by month

Plan your trip to Adelaide by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Adelaide, use this chart to help with planning. For those seeking warmer temperatures, January is the ideal time of year to visit, when temperatures reach an average of 21.0 C. Travellers hoping to avoid the cold should look outside of June, when temperatures are typically at their lowest (around 11.0 C).

Reviews of airlines servicing Adelaide

Get insights into the airlines that provide service to Adelaide. 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 Adelaide. Reviews last updated 1 May 2025.
Fiji Airways
8.1
Very Good
190 reviews
Check prices

Boarding

8.2

Food

7.5

Overall

8.1

Comfort

8.1

Entertainment

7.5

Crew

8.5

Reviews

1 / 15
6.0
Good

Anonymous,Dec 2024

NAN - LAX

Asked for water before dinner was served, didn’t get it. Dinner served but no drinks was asked or served with dinner. When asked if I wanted my seat made for bedtime, asked for water again. This time I got it. Filled the breakfast form but was still asked what I wanted. Comparing this experience with Fiji air flight from LA to Melbourne. Worse was missing my flight connection to Baltimore since Fiji air opted to wait for a passenger that couldn’t pass security. Instead of leaving at 9:40 pm, we left at 11. So spent overnight at a hotel for next day’s flight. Another expense!
Fiji Airways
8.1
Very Good
190 reviews
Fiji Airways
8.1
Very Good
190 reviews
Check prices

Boarding

8.2

Food

7.5

Overall

8.1

Comfort

8.1

Entertainment

7.5

Crew

8.5

Reviews

1 / 15
6.0
Good

Anonymous,Dec 2024

NAN - LAX

Asked for water before dinner was served, didn’t get it. Dinner served but no drinks was asked or served with dinner. When asked if I wanted my seat made for bedtime, asked for water again. This time I got it. Filled the breakfast form but was still asked what I wanted. Comparing this experience with Fiji air flight from LA to Melbourne. Worse was missing my flight connection to Baltimore since Fiji air opted to wait for a passenger that couldn’t pass security. Instead of leaving at 9:40 pm, we left at 11. So spent overnight at a hotel for next day’s flight. Another expense!
Singapore Airlines
8.1
Very Good
1,292 reviews
Fiji Airways
8.1
Very Good
190 reviews
Check prices

Boarding

8.2

Food

7.5

Overall

8.1

Comfort

8.1

Entertainment

7.5

Crew

8.5

Reviews

1 / 15
6.0
Good

Anonymous,Dec 2024

NAN - LAX

Asked for water before dinner was served, didn’t get it. Dinner served but no drinks was asked or served with dinner. When asked if I wanted my seat made for bedtime, asked for water again. This time I got it. Filled the breakfast form but was still asked what I wanted. Comparing this experience with Fiji air flight from LA to Melbourne. Worse was missing my flight connection to Baltimore since Fiji air opted to wait for a passenger that couldn’t pass security. Instead of leaving at 9:40 pm, we left at 11. So spent overnight at a hotel for next day’s flight. Another expense!
Air New Zealand
8.0
Very Good
472 reviews
Fiji Airways
8.1
Very Good
190 reviews
Check prices

Boarding

8.2

Food

7.5

Overall

8.1

Comfort

8.1

Entertainment

7.5

Crew

8.5

Reviews

1 / 15
6.0
Good

Anonymous,Dec 2024

NAN - LAX

Asked for water before dinner was served, didn’t get it. Dinner served but no drinks was asked or served with dinner. When asked if I wanted my seat made for bedtime, asked for water again. This time I got it. Filled the breakfast form but was still asked what I wanted. Comparing this experience with Fiji air flight from LA to Melbourne. Worse was missing my flight connection to Baltimore since Fiji air opted to wait for a passenger that couldn’t pass security. Instead of leaving at 9:40 pm, we left at 11. So spent overnight at a hotel for next day’s flight. Another expense!
Hawaiian Airlines
7.9
Good
2,409 reviews
Fiji Airways
8.1
Very Good
190 reviews
Check prices

Boarding

8.2

Food

7.5

Overall

8.1

Comfort

8.1

Entertainment

7.5

Crew

8.5

Reviews

1 / 15
6.0
Good

Anonymous,Dec 2024

NAN - LAX

Asked for water before dinner was served, didn’t get it. Dinner served but no drinks was asked or served with dinner. When asked if I wanted my seat made for bedtime, asked for water again. This time I got it. Filled the breakfast form but was still asked what I wanted. Comparing this experience with Fiji air flight from LA to Melbourne. Worse was missing my flight connection to Baltimore since Fiji air opted to wait for a passenger that couldn’t pass security. Instead of leaving at 9:40 pm, we left at 11. So spent overnight at a hotel for next day’s flight. Another expense!
Qantas Airways
7.5
Good
829 reviews
Fiji Airways
8.1
Very Good
190 reviews
Check prices

Boarding

8.2

Food

7.5

Overall

8.1

Comfort

8.1

Entertainment

7.5

Crew

8.5

Reviews

1 / 15
6.0
Good

Anonymous,Dec 2024

NAN - LAX

Asked for water before dinner was served, didn’t get it. Dinner served but no drinks was asked or served with dinner. When asked if I wanted my seat made for bedtime, asked for water again. This time I got it. Filled the breakfast form but was still asked what I wanted. Comparing this experience with Fiji air flight from LA to Melbourne. Worse was missing my flight connection to Baltimore since Fiji air opted to wait for a passenger that couldn’t pass security. Instead of leaving at 9:40 pm, we left at 11. So spent overnight at a hotel for next day’s flight. Another expense!

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.

  • What are the cheapest airlines to fly from State of Washington to Adelaide one-way?

    For one-way options, check prices for Qantas Airways. According to our data, you can fly for as low as $988. Users have also found prices from $1,366 and $2,194 on Air New Zealand and Qatar Airways, respectively.

  • 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.

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

    Currently, June is the cheapest month in which you can book a flight from State of Washington to Adelaide (average of $168). Flying from State of Washington to Adelaide in October is currently the most expensive (average of $241). 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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