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$541+ Cheap flights from Seattle (SEA) 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
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheap flight deals from Seattle to Adelaide

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Adelaide (ADL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated June 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 Seattle/Tacoma Intl to Adelaide
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One-way flight from Seattle/Tacoma Intl to Adelaide
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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 Seattle to Adelaide

Cheapest flights from Seattle to Adelaide
Explore the most affordable flight options available from Seattle to Adelaide. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 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.
Mon 6/232:40 pmSEA - ADL
2 stops28h 10mMultiple Airlines
Wed 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.
Thu 8/75:55 pmSEA - ADL
2 stops29h 50mQantas Airways
Thu 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.
Sat 7/58:15 amSEA - ADL
2 stops32h 10mHawaiian Airlines
Thu 7/314:30 pmADL - SEA
2 stops21h 40mHawaiian Airlines
Deal found 6/10$1,232
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.
Wed 9/245:14 pmSEA - ADL
2 stops24h 21mUnited Airlines
Mon 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.
Sun 7/276:45 amSEA - ADL
3 stops47h 20mAir New Zealand
Sun 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.
Sat 7/54:30 pmSEA - ADL
2 stops52h 55mANA
Tue 8/264:30 pmADL - SEA
2 stops38h 25mANA
Deal found 6/12$1,394
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.
Sat 7/56:59 pmSEA - ADL
2 stops24h 06mFiji Airways
Thu 7/3112:35 pmADL - SEA
2 stops25h 01mFiji Airways
Deal found 6/10$1,427
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.
Thu 9/2510:15 amSEA - ADL
2 stops56h 50mSingapore Airlines
Mon 10/66:35 pmADL - SEA
1 stop31h 40mSingapore Airlines
Deal found 6/11$1,742
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/84:30 pmSEA - ADL
1 stop30h 50mQatar Airways
Wed 8/279:40 pmADL - SEA
1 stop31h 35mQatar Airways
Deal found 6/12$2,289

Cheapflights Fare Finder

Customize your flight search to find flights from Seattle 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 June 12, 2025.
Use the filters below to find and compare flights from Seattle to Adelaide that are best for you.

Fly from

Seattle

Fly to

Adelaide

Route

Depart

Return

Price

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Mon 6/23

2:40 pm-11:20 am

2 stops28h 10m

Adelaide

Wed 8/27

12:00 pm-8:24 pm

2 stops24h 54m

$1,009

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Thu 8/7

5:55 pm-4:15 pm

2 stops29h 50m

Adelaide

Thu 8/28

6:00 am-9:33 pm

2 stops32h 03m

$1,038

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Sat 7/5

8:15 am-8:55 am

2 stops32h 10m

Adelaide

Thu 7/31

4:30 pm-9:40 pm

2 stops21h 40m

$1,232

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Wed 9/24

5:14 pm-10:05 am

2 stops24h 21m

Adelaide

Mon 10/6

6:00 am-9:15 pm

3 stops32h 45m

$1,274

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Sun 7/27

6:45 am-10:35 pm

3 stops47h 20m

Adelaide

Sun 8/3

11:55 am-10:16 pm

2 stops26h 51m

$1,347

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Sat 7/5

4:30 pm-1:55 pm

2 stops52h 55m

Adelaide

Tue 8/26

4:30 pm-2:25 pm

2 stops38h 25m

$1,394

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Sat 7/5

6:59 pm-11:35 am

2 stops24h 06m

Adelaide

Thu 7/31

12:35 pm-9:06 pm

2 stops25h 01m

$1,427

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Thu 9/25

10:15 am-11:35 am

2 stops56h 50m

Adelaide

Mon 10/6

6:35 pm-8:45 am

1 stop31h 40m

$1,742

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Fri 8/8

4:30 pm-3:50 pm

1 stop30h 50m

Adelaide

Wed 8/27

9:40 pm-12:45 pm

1 stop31h 35m

$2,289

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Tue 8/5

6:00 am-11:35 am

2 stops37h 05m

$541

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/9

Showing 1-10 of 14 results
1
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Best time to book a flight from Seattle to Adelaide

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

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

Find hourly flight availability from Seattle 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 June 12, 2025.

A simple way to save on the total cost of your ticket is to fly from Seattle to Adelaide in the morning. If you’re flexible enough to do this you can expect to save up to 26% on your trip compared to booking a flight at noon.

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 June 12, 2025.
ANA
8.3
Very good
882 reviews

Boarding

8.5

Comfort

8.2

Entertainment

7.9

Overall

8.3

Food

7.7

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

Boarding

8.5

Comfort

8.2

Entertainment

7.9

Overall

8.3

Food

7.7

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

Boarding

8.5

Comfort

8.2

Entertainment

7.9

Overall

8.3

Food

7.7

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

Boarding

8.5

Comfort

8.2

Entertainment

7.9

Overall

8.3

Food

7.7

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

Boarding

8.5

Comfort

8.2

Entertainment

7.9

Overall

8.3

Food

7.7

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

Boarding

8.5

Comfort

8.2

Entertainment

7.9

Overall

8.3

Food

7.7

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 Seattle to Adelaide. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from Seattle to Adelaide round-trip?

    Qantas Airways, at $1,038, was found to be the cheapest airline from Seattle to Adelaide.Alternate airlines to your destination round-trip include Hawaiian Airlines and United Airlines. These flights start at 30% lower than the current average price 3 months from now.

  • What are the cheapest airlines to fly from Seattle to Adelaide one-way?

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

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Seattle 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 Seattle to Adelaide?

    Currently, August is the cheapest month in which you can book a flight from Seattle to Adelaide (average of $1,214). Flying from Seattle 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

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Top 2 airlines flying from Seattle to Adelaide

Discover the top 2 airlines that operate flights from Seattle 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 June 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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