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$589+ 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 7/30. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — ADL
Jun 21 — Jun 281
Sat 6/21
Sat 6/28
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 16, 2025.

Round-trip from

$1,081
(KAYAK)

One-way from

$589
(Yatra.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. 18% potential increase in price ($335 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($70 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 16, 2025.

This KAYAK deal was found by Cheapflights users on 6/16. 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.
Tue 7/82:30 pmSEA - ADL
2 stops29h 05mQantas Airways
Tue 8/264:55 pmADL - SEA
2 stops45h 08mQantas Airways
Deal found 6/16$1,081
This Trip.com deal was found by Cheapflights users on 6/14. 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.
Tue 7/84:30 pmSEA - ADL
2 stops37h 00mMultiple Airlines
Tue 8/2612:00 pmADL - SEA
2 stops42h 55mMultiple Airlines
Deal found 6/14$1,120
This American Airlines deal was found by Cheapflights users on 6/15. 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.
Wed 7/302:30 pmSEA - ADL
2 stops26h 25mAmerican Airlines
Wed 8/612:45 pmADL - SEA
2 stops25h 18mAmerican Airlines
Deal found 6/15$1,179
This Jetabroad deal was found by Cheapflights users on 6/14. 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 6/14$1,235
This United Airlines deal was found by Cheapflights users on 6/14. 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.
Sun 7/67:34 pmSEA - ADL
2 stops23h 01mUnited Airlines
Sun 8/176:05 amADL - SEA
3 stops31h 22mUnited Airlines
Deal found 6/14$1,247
This FlightHub deal was found by Cheapflights users on 6/15. 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 7/56:00 pmSEA - ADL
2 stops25h 05mFiji Airways
Thu 7/3112:35 pmADL - SEA
2 stops25h 01mFiji Airways
Deal found 6/15$1,427
This oojo deal was found by Cheapflights users on 6/15. 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.
Thu 7/314:30 pmSEA - ADL
1 stop30h 50mQatar Airways
Thu 8/79:40 pmADL - SEA
1 stop31h 35mQatar Airways
Deal found 6/15$2,381
This Emirates deal was found by Cheapflights users on 6/14. 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 Emirates is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/105:15 pmSEA - ADL
1 stop34h 20mEmirates
Fri 8/159:50 pmADL - SEA
1 stop32h 05mEmirates
Deal found 6/14$2,681
This Jetabroad deal was found by Cheapflights users on 6/14. 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.
Tue 7/87:34 pmSEA - ADL
3 stops34h 31mAir New Zealand
Tue 8/266:00 amADL - SEA
3 stops29h 19mAir New Zealand
Deal found 6/14$2,812

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 16, 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

Tue 7/8

2:30 pm-12:05 pm

2 stops29h 05m

Adelaide

Tue 8/26

4:55 pm-9:33 pm

2 stops45h 08m

$1,081

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Tue 7/8

4:30 pm-10:00 pm

2 stops37h 00m

Adelaide

Tue 8/26

12:00 pm-2:25 pm

2 stops42h 55m

$1,120

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Wed 7/30

2:30 pm-9:25 am

2 stops26h 25m

Adelaide

Wed 8/6

12:45 pm-9:33 pm

2 stops25h 18m

$1,179

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

$1,235

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Sun 7/6

7:34 pm-11:05 am

2 stops23h 01m

Adelaide

Sun 8/17

6:05 am-8:57 pm

3 stops31h 22m

$1,247

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Sat 7/5

6:00 pm-11:35 am

2 stops25h 05m

Adelaide

Thu 7/31

12:35 pm-9:06 pm

2 stops25h 01m

$1,427

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Thu 7/31

4:30 pm-3:50 pm

1 stop30h 50m

Adelaide

Thu 8/7

9:40 pm-12:45 pm

1 stop31h 35m

$2,381

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Thu 7/10

5:15 pm-8:05 pm

1 stop34h 20m

Adelaide

Fri 8/15

9:50 pm-1:25 pm

1 stop32h 05m

$2,681

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Tue 7/8

7:34 pm-10:35 pm

3 stops34h 31m

Adelaide

Tue 8/26

6:00 am-6:49 pm

3 stops29h 19m

$2,812

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Wed 7/30

6:09 pm-12:05 pm

2 stops25h 26m

$589

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/15

Showing 1-10 of 13 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 16, 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 16, 2025.
Emirates
8.1
Very good
3,267 reviews

Crew

8.3

Comfort

8.0

Overall

8.1

Food

7.8

Boarding

8.1

Entertainment

8.2

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.
Emirates
8.1
Very good
3,267 reviews
Emirates
8.1
Very good
3,267 reviews

Crew

8.3

Comfort

8.0

Overall

8.1

Food

7.8

Boarding

8.1

Entertainment

8.2

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.
Fiji Airways
8.0
Very good
199 reviews
Emirates
8.1
Very good
3,267 reviews

Crew

8.3

Comfort

8.0

Overall

8.1

Food

7.8

Boarding

8.1

Entertainment

8.2

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.
Air New Zealand
8.0
Very good
485 reviews
Emirates
8.1
Very good
3,267 reviews

Crew

8.3

Comfort

8.0

Overall

8.1

Food

7.8

Boarding

8.1

Entertainment

8.2

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.
Hawaiian Airlines
7.9
Good
2,500 reviews
Emirates
8.1
Very good
3,267 reviews

Crew

8.3

Comfort

8.0

Overall

8.1

Food

7.8

Boarding

8.1

Entertainment

8.2

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.
Qantas Airways
7.5
Good
857 reviews
Emirates
8.1
Very good
3,267 reviews

Crew

8.3

Comfort

8.0

Overall

8.1

Food

7.8

Boarding

8.1

Entertainment

8.2

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.

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 $1,081, was found to be the cheapest airline from Seattle to Adelaide.Alternate airlines to your destination round-trip include American Airlines and Hawaiian Airlines. These flights start at 26% 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 ($589), United Airlines ($648), and Qatar Airways ($1,360).

  • 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.

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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 16, 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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