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$541+ 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 8/5. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — ADL
jun. 17 — jun. 241
mar. 6/17
mar. 6/24
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 junio 12, 2025.

Round-trip from

$1,009
(Trip.com)

One-way from

$541
(Trip.com)

Popular in

January

Cheapest in

March

Average price

$1,164
From Washington to Adelaide
Search Deals
One-way flight from Washington to Adelaide
Search Deals
Highest demand for flights based on searches. 17% potential increase in price ($322 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($68 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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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 junio 12, 2025.

This Trip.com deal was found by Cheapflights users on 6/12. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 6/232:40 pmSEA - ADL
2 stops28h 10mMultiple Airlines
mié. 8/2712:00 pmADL - SEA
2 stops24h 54mMultiple Airlines
Deal found 6/12$1,009
This Justfly.com deal was found by Cheapflights users on 6/11. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 8/75:55 pmSEA - ADL
2 stops29h 50mQantas Airways
jue. 8/286:00 amADL - SEA
2 stops32h 03mQantas Airways
Deal found 6/11$1,038
This Jetabroad deal was found by Cheapflights users on 6/10. 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 Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 7/58:15 amSEA - ADL
2 stops32h 10mHawaiian Airlines
jue. 7/314:30 pmADL - SEA
2 stops21h 40mHawaiian Airlines
Deal found 6/10$1,232
This Ticket deal was found by Cheapflights users on 6/11. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 7/45:40 pmPDX - ADL
2 stops25h 55mQantas Airways
jue. 7/1012:45 pmADL - PDX
2 stops25h 59mQantas Airways
Deal found 6/11$1,261
This United Airlines deal was found by Cheapflights users on 6/11. 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.
mié. 9/245:14 pmSEA - ADL
2 stops24h 21mUnited Airlines
lun. 10/66:00 amADL - SEA
3 stops32h 45mUnited Airlines
Deal found 6/11$1,274
This Jetabroad deal was found by Cheapflights users on 6/12. 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 Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 7/276:45 amSEA - ADL
3 stops47h 20mAir New Zealand
dom. 8/311:55 amADL - SEA
2 stops26h 51mAir New Zealand
Deal found 6/12$1,347
This KAYAK deal was found by Cheapflights users on 6/12. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 7/54:30 pmSEA - ADL
2 stops52h 55mANA
mar. 8/264:30 pmADL - SEA
2 stops38h 25mANA
Deal found 6/12$1,394
This United Airlines deal was found by Cheapflights users on 6/10. 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.
dom. 12/2811:59 pmPDX - ADL
2 stops39h 01mUnited Airlines
mar. 1/136:10 amADL - PDX
2 stops22h 35mUnited Airlines
Deal found 6/10$1,425
This FlightHub deal was found by Cheapflights users on 6/10. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 7/56:59 pmSEA - ADL
2 stops24h 06mFiji Airways
jue. 7/3112:35 pmADL - SEA
2 stops25h 01mFiji Airways
Deal found 6/10$1,427
This American Airlines deal was found by Cheapflights users on 6/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 7/251:43 pmPDX - ADL
2 stops28h 07mAmerican Airlines
vie. 8/112:45 pmADL - PDX
2 stops25h 59mAmerican Airlines
Deal found 6/10$1,452
This Jetabroad deal was found by Cheapflights users on 6/10. 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 Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 7/259:40 pmPDX - ADL
3 stops42h 45mHawaiian Airlines
vie. 8/112:25 pmADL - PDX
2 stops26h 15mHawaiian Airlines
Deal found 6/10$1,560
This KAYAK deal was found by Cheapflights users on 6/11. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/2510:15 amSEA - ADL
2 stops56h 50mSingapore Airlines
lun. 10/66:35 pmADL - SEA
1 stop31h 40mSingapore Airlines
Deal found 6/11$1,742

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 junio 12, 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

lun. 6/23

2:40 pm-11:20 am

2 stops28h 10m

Adelaide

mié. 8/27

12:00 pm-8:24 pm

2 stops24h 54m

$1,009

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

jue. 8/7

5:55 pm-4:15 pm

2 stops29h 50m

Adelaide

jue. 8/28

6:00 am-9:33 pm

2 stops32h 03m

$1,038

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

sáb. 7/5

8:15 am-8:55 am

2 stops32h 10m

Adelaide

jue. 7/31

4:30 pm-9:40 pm

2 stops21h 40m

$1,232

PortlandAdelaide

PDX - ADL

PDXADL

Portland

vie. 7/4

5:40 pm-12:05 pm

2 stops25h 55m

Adelaide

jue. 7/10

12:45 pm-10:14 pm

2 stops25h 59m

$1,261

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

mié. 9/24

5:14 pm-10:05 am

2 stops24h 21m

Adelaide

lun. 10/6

6:00 am-9:15 pm

3 stops32h 45m

$1,274

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

dom. 7/27

6:45 am-10:35 pm

3 stops47h 20m

Adelaide

dom. 8/3

11:55 am-10:16 pm

2 stops26h 51m

$1,347

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

sáb. 7/5

4:30 pm-1:55 pm

2 stops52h 55m

Adelaide

mar. 8/26

4:30 pm-2:25 pm

2 stops38h 25m

$1,394

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

sáb. 7/5

6:59 pm-11:35 am

2 stops24h 06m

Adelaide

jue. 7/31

12:35 pm-9:06 pm

2 stops25h 01m

$1,427

PortlandAdelaide

PDX - ADL

PDXADL

Portland

vie. 7/25

1:43 pm-10:20 am

2 stops28h 07m

Adelaide

vie. 8/1

12:45 pm-10:14 pm

2 stops25h 59m

$1,452

PortlandAdelaide

PDX - ADL

PDXADL

Portland

vie. 7/25

9:40 pm-8:55 am

3 stops42h 45m

Adelaide

vie. 8/1

12:25 pm-10:10 pm

2 stops26h 15m

$1,560

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/9

Showing 1-10 of 19 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 junio 12, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from State of Washington to Adelaide as you normally would.

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 0.4 - 2.4 inches per month. July is typically the wettest month, when rainfall can reach 2.4 in. January is typically the driest time to visit Adelaide when rainfall is around 0.4 in.

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 69.8 F. Travelers looking to avoid the cold should look outside of June, when temperatures are typically at their lowest (around 51.8 F).

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 junio 12, 2025.
Read reviews from past customers who have flown ANA, Fiji Airways and Emirates from Washington to Adelaide. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
ANA
8.3
Very good
882 reviews

Food

7.7

Entertainment

7.9

Boarding

8.5

Overall

8.3

Comfort

8.2

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

SEA - HND

The flight with ANA was fantastic. Huge plane but was boarded swiftly and efficiently with a lot of crew members engaged to expedite the process. The onboard crew was polite and considerate and constantly doing things to serve passengers. The plane was new and in great working order-- definitely more spacious than the Alaska plane we took from SLC. Food was solid, not great. Lots of movie options.
ANA
8.3
Very good
882 reviews
ANA
8.3
Very good
882 reviews

Food

7.7

Entertainment

7.9

Boarding

8.5

Overall

8.3

Comfort

8.2

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

SEA - HND

The flight with ANA was fantastic. Huge plane but was boarded swiftly and efficiently with a lot of crew members engaged to expedite the process. The onboard crew was polite and considerate and constantly doing things to serve passengers. The plane was new and in great working order-- definitely more spacious than the Alaska plane we took from SLC. Food was solid, not great. Lots of movie options.
Fiji Airways
8.1
Very good
194 reviews
ANA
8.3
Very good
882 reviews

Food

7.7

Entertainment

7.9

Boarding

8.5

Overall

8.3

Comfort

8.2

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

SEA - HND

The flight with ANA was fantastic. Huge plane but was boarded swiftly and efficiently with a lot of crew members engaged to expedite the process. The onboard crew was polite and considerate and constantly doing things to serve passengers. The plane was new and in great working order-- definitely more spacious than the Alaska plane we took from SLC. Food was solid, not great. Lots of movie options.
Emirates
8.1
Very good
3,264 reviews
ANA
8.3
Very good
882 reviews

Food

7.7

Entertainment

7.9

Boarding

8.5

Overall

8.3

Comfort

8.2

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

SEA - HND

The flight with ANA was fantastic. Huge plane but was boarded swiftly and efficiently with a lot of crew members engaged to expedite the process. The onboard crew was polite and considerate and constantly doing things to serve passengers. The plane was new and in great working order-- definitely more spacious than the Alaska plane we took from SLC. Food was solid, not great. Lots of movie options.
Singapore Airlines
8.1
Very good
1,302 reviews
ANA
8.3
Very good
882 reviews

Food

7.7

Entertainment

7.9

Boarding

8.5

Overall

8.3

Comfort

8.2

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

SEA - HND

The flight with ANA was fantastic. Huge plane but was boarded swiftly and efficiently with a lot of crew members engaged to expedite the process. The onboard crew was polite and considerate and constantly doing things to serve passengers. The plane was new and in great working order-- definitely more spacious than the Alaska plane we took from SLC. Food was solid, not great. Lots of movie options.
Air New Zealand
8.0
Very good
483 reviews
ANA
8.3
Very good
882 reviews

Food

7.7

Entertainment

7.9

Boarding

8.5

Overall

8.3

Comfort

8.2

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

SEA - HND

The flight with ANA was fantastic. Huge plane but was boarded swiftly and efficiently with a lot of crew members engaged to expedite the process. The onboard crew was polite and considerate and constantly doing things to serve passengers. The plane was new and in great working order-- definitely more spacious than the Alaska plane we took from SLC. Food was solid, not great. Lots of movie options.

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.

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

    The cheapest airlines for a one-way flight from State of Washington to Adelaide are Qantas Airways ($574), United Airlines ($666), and Singapore Airlines ($1,261).

  • 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.

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

    Currently, August is the cheapest month in which you can book a flight from State of Washington to Adelaide (average of $1,214). Flying from State of Washington to Adelaide in December is currently the most expensive (average of $2,057). 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

Traveling to a place near Washington?

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Top 2 airlines flying from Washington to Adelaide

Discover the top 2 airlines 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 junio 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Qantas AirwaysCheapest$1,128Average$1,254FlexibilityNo cancel feeOn-time74%
United AirlinesCheapest$1,302Average$1,575FlexibilityNo cancel feeOn-time69%

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