Adelaide

$714+ 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 5/17. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — ADL
Jun 10 — Jun 171
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Cheap 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 May 11, 2026.

This SmartFares deal was found by Cheapflights users on 5/6. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/48:50 pm
SEA
-
ADL
2 stops33h 15m
Multiple Airlines
Thu 6/117:10 pm
ADL
-
SEA
2 stops45h 19m
Multiple Airlines
Deal found 5/6$1,298
This Ovago deal was found by Cheapflights users on 5/9. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/95:06 pm
SEA
-
ADL
2 stops25h 59m
Multiple Airlines
Sat 5/1612:35 pm
ADL
-
SEA
2 stops25h 39m
Multiple Airlines
Deal found 5/9$1,406
This Ovago deal was found by Cheapflights users on 5/9. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/68:00 am
SEA
-
ADL
2 stops22h 05m
Multiple Airlines
Fri 7/243:00 pm
ADL
-
SEA
2 stops25h 29m
Multiple Airlines
Deal found 5/9$1,472
This Air Canada deal was found by Cheapflights users on 5/7. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1210:35 am
SEA
-
ADL
2 stops35h 05m
Air Canada
Mon 11/166:10 am
ADL
-
SEA
2 stops22h 11m
Air Canada
Deal found 5/7$1,484
This SmartFares deal was found by Cheapflights users on 5/9. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/2310:55 am
SEA
-
ADL
2 stops43h 10m
Multiple Airlines
Tue 6/302:25 pm
ADL
-
SEA
2 stops23h 39m
Multiple Airlines
Deal found 5/9$1,560
This oojo deal was found by Cheapflights users on 5/9. 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.
Mon 6/2210:45 am
SEA
-
ADL
2 stops31h 40m
Air New Zealand
Fri 7/1712:05 pm
ADL
-
SEA
2 stops22h 57m
Air New Zealand
Deal found 5/9$1,588

Find 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 May 11, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,298
(SmartFares)

One-way from

$714
(United Airlines)
Provider with most accurate pricing for Seattle/Tacoma Intl-Adelaide flight deals.
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Adelaide flights.
From Seattle/Tacoma Intl to Adelaide
One-way flight from Seattle/Tacoma Intl to Adelaide

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 May 11, 2026.
Use the filters below to find and compare flights from Seattle to Adelaide that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Thu 6/4

8:50 pm-10:35 pm

2 stops33h 15m

Adelaide

Thu 6/11

7:10 pm-11:59 pm

2 stops45h 19m

$1,298
Quickest round-trip

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Mon 7/6

8:00 am-10:35 pm

2 stops22h 05m

Adelaide

Fri 7/24

3:00 pm-11:59 pm

2 stops25h 29m

$1,472

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Thu 6/4

1:30 pm-11:05 am

2 stops29h 05m

Adelaide

Thu 6/11

8:00 pm-9:10 pm

3 stops41h 40m

$1,823

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Mon 7/6

6:00 am-5:45 pm

2 stops43h 15m

Adelaide

Fri 7/24

6:25 am-6:32 pm

3 stops28h 37m

$1,939

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Mon 7/6

5:15 pm-8:05 pm

1 stop34h 20m

Adelaide

Fri 7/24

10:00 pm-1:25 pm

1 stop31h 55m

$3,178

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Sat 9/5

5:22 pm-1:35 pm

2 stops27h 43m

Adelaide

Tue 10/6

7:45 pm-12:16 pm

2 stops34h 01m

$3,265

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Sun 9/6

10:15 am-7:25 am

1 stop28h 40m

Adelaide

Mon 10/5

6:35 pm-8:45 am

1 stop31h 40m

$3,334

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Wed 9/9

4:59 pm-11:05 am

2 stops25h 36m

Adelaide

Sat 10/3

6:00 am-9:57 pm

2 stops32h 27m

$3,467
Cheapest one-way

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Sun 5/17

5:25 pm-11:10 am

2 stops25h 15m

$714
Quickest one-way

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Mon 6/22

5:10 pm-9:25 am

2 stops23h 45m

$841

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/8

Showing 1-10 of 12 resultsSorted by cheapest first
1
2

Compare providers for flights from Seattle to Adelaide

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Adelaide in May.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
GurufarePrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Seattle-Adelaide flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Adelaide flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Adelaide flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-Adelaide flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Adelaide flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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.

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 May 11, 2026.
Read through reviews of airlines operating flights from Seattle to Adelaide, such as Qantas Airways. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Entertainment

7.2

Crew

8.1

Comfort

7.4

Food

7.0

Boarding

7.7

Overall

7.5

Reviews

1 / 20
2.0
Mediocre

Midhat,Apr 2026

AKL - ADL

Poor as usual. Flight was delayed for more than 4 hours. The Staff was rude. Food was terrible. Very unreliable, unprofessional and unpleasant.

Entertainment

7.2

Crew

8.1

Comfort

7.4

Food

7.0

Boarding

7.7

Overall

7.5

Reviews

1 / 20
2.0
Mediocre

Midhat,Apr 2026

AKL - ADL

Poor as usual. Flight was delayed for more than 4 hours. The Staff was rude. Food was terrible. Very unreliable, unprofessional and unpleasant.

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.
  • How long is the flight from Seattle to Adelaide?

    For as low as $1,823, United Airlines can have you in Adelaide from Seattle in 29h 05m. Seattle and Adelaide are separated by a distance of 8332 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What is the cheapest airline to fly from Seattle to Adelaide round-trip?

    Qantas Airways, at $1,088, was found to be the cheapest airline from Seattle to Adelaide..

  • 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.

See more FAQs

Traveling to a place near Adelaide?

Book flights to Adelaide if you plan to visit one of these locations
Glenelg

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Top airline flying from Seattle to Adelaide

Discover the top airline 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 May 11, 2026.
AirlineCheapestAverageFlexibilityOn-time
Qantas AirwaysCheapest$1,088Average$1,211FlexibilityNo cancel feeOn-time74%

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