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Cheap flights from Adelaide to Seattle from $1,477

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 18/8. Fares are subject to change and may not be available on all flights or dates of travel.
ADL — SEA
6 Mar — 13 Mar1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Adelaide to Seattle

Enter your travel dates to find the best prices.

Cheapest flights from Adelaide to Seattle
Explore the most affordable flight options available from Adelaide to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 4 February 2026.

Tue 18/806:00
ADL
-
SEA
2 stops24h 30m
Multiple Airlines
Sun 6/919:13
SEA
-
ADL
2 stops21h 57m
Multiple Airlines
Deal found 3/2$1,477
Tue 21/713:25
ADL
-
SEA
2 stops23h 40m
Multiple Airlines
Wed 5/814:32
SEA
-
ADL
2 stops26h 23m
Multiple Airlines
Deal found 3/2$1,481
Wed 15/706:00
ADL
-
SEA
2 stops23h 21m
Multiple Airlines
Thu 30/714:32
SEA
-
ADL
2 stops26h 23m
Multiple Airlines
Deal found 3/2$1,537
Thu 19/316:10
ADL
-
SEA
2 stops22h 02m
Multiple Airlines
Thu 26/319:24
SEA
-
ADL
2 stops24h 46m
Multiple Airlines
Deal found 2/2$1,544
Fri 30/1007:50
ADL
-
SEA
2 stops50h 37m
American Airlines
Tue 3/1115:51
SEA
-
ADL
2 stops50h 39m
American Airlines
Deal found 2/2$1,553
Fri 30/1006:10
ADL
-
SEA
2 stops25h 51m
Air Canada
Tue 3/1119:05
SEA
-
ADL
2 stops24h 20m
Air Canada
Deal found 3/2$1,597
Tue 21/713:20
ADL
-
SEA
2 stops26h 05m
American Airlines
Wed 5/814:32
SEA
-
ADL
2 stops26h 23m
American Airlines
Deal found 2/2$1,607
Fri 17/706:00
ADL
-
SEA
2 stops23h 21m
Multiple Airlines
Thu 30/717:40
SEA
-
ADL
2 stops22h 45m
Multiple Airlines
Deal found 3/2$1,620
Fri 17/713:20
ADL
-
SEA
2 stops26h 05m
American Airlines
Thu 30/714:32
SEA
-
ADL
2 stops26h 23m
American Airlines
Deal found 2/2$1,690
Thu 19/318:35
ADL
-
SEA
1 stop31h 05m
Singapore Airlines
Thu 26/309:45
SEA
-
ADL
1 stop38h 05m
Singapore Airlines
Deal found 2/2$1,742
Thu 19/306:10
ADL
-
SEA
2 stops27h 34m
Virgin Australia
Thu 26/319:34
SEA
-
ADL
1 stop20h 16m
Virgin Australia
Deal found 2/2$1,824
Wed 15/706:05
ADL
-
SEA
3 stops31h 35m
United Airlines
Thu 30/707:00
SEA
-
ADL
2 stops35h 35m
United Airlines
Deal found 3/2$1,851

Find flight deals from Adelaide to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Adelaide (ADL) to Seattle (SEA). 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 4 February 2026.

Round-trip from

$1,481

Popular in

April

Cheapest in

November

Average price

$1,577
21/7-5/8
  • 21/7-5/8
  • 4 total stops
  • 50h 03m total
  • Adelaide to Seattle
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($285 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($83 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Adelaide to Seattle 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 4 February 2026.
Use the filters below to find and compare flights from Adelaide to Seattle that are best for you.

Fly from

Adelaide

Fly to

Seattle

Route

Depart

Return

Price

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Tue 21/7

13:25-20:35

2 stops23h 40m

Seattle/Tacoma Intl

Wed 5/8

14:32-09:25

2 stops26h 23m

$1,481

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Wed 15/7

06:00-12:51

2 stops23h 21m

Seattle/Tacoma Intl

Thu 30/7

14:32-09:25

2 stops26h 23m

$1,537

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Thu 19/3

16:10-20:42

2 stops22h 02m

Seattle/Tacoma Intl

Thu 26/3

19:24-13:40

2 stops24h 46m

$1,544

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Tue 21/7

13:20-22:55

2 stops26h 05m

Seattle/Tacoma Intl

Wed 5/8

14:32-09:25

2 stops26h 23m

$1,607

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Fri 17/7

06:00-12:51

2 stops23h 21m

Seattle/Tacoma Intl

Thu 30/7

17:40-08:55

2 stops22h 45m

$1,620

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Fri 17/7

13:20-22:55

2 stops26h 05m

Seattle/Tacoma Intl

Thu 30/7

14:32-09:25

2 stops26h 23m

$1,690

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Thu 19/3

18:35-08:10

1 stop31h 05m

Seattle/Tacoma Intl

Thu 26/3

09:45-17:20

1 stop38h 05m

$1,742

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Wed 15/7

06:05-21:10

3 stops31h 35m

Seattle/Tacoma Intl

Thu 30/7

07:00-11:05

2 stops35h 35m

$1,851

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Fri 17/7

17:35-08:45

1 stop31h 40m

Seattle/Tacoma Intl

Thu 30/7

10:15-07:25

1 stop28h 40m

$2,096

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Sun 10/5

18:50-19:15

2 stops40h 55m

$3,769

Flights are sorted by cheapest return flights first.

Deals found on 3/2

Showing 1-10 of 16 results
1
2

Best time to book a flight from Adelaide to Seattle

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

What’s the top stopover airport for flights from Adelaide to Seattle?

Share of one-stop return flights from Adelaide to Seattle chosen by Cheapflights users in the past 12 months, using the same stopover each way.

Singapore (SIN) – chosen by Cheapflights users on 60% of one-stop itineraries from Adelaide to Seattle on Cheapflights.

What’s the cheapest stopover airport for flights from Adelaide to Seattle?

Average return fare for one-stop flights from Adelaide to Seattle, chosen by Cheapflights users in the past 12 months, with the same stopover each way.

Singapore (SIN) is the most affordable one-stop option, with an average return flight price of $3,273.

What’s the fastest stopover option from Adelaide to Seattle?

Shortest average travel time for one-stop one-way flights from Adelaide to Seattle, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.

Flights via San Francisco (SFO) have the shortest average one-way travel time for one-stop routes: 19h 15m.

Which airport typically offers the quickest stopover for flights from Adelaide to Seattle?

Average stopover duration for one-stop one-way flights from Adelaide to Seattle, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via San Francisco (SFO) offer the fastest connection on this route, with an average stopover time of 1h 44m.

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. 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 Seattle. Reviews last updated 4 February 2026.
See what other customers who have flown with Air New Zealand, Virgin Australia, andQantas Airways from Adelaide to Seattle have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Air New Zealand
8.0
Very Good
578 reviews
Check prices

Comfort

8.0

Overall

8.0

Boarding

8.2

Entertainment

7.4

Crew

8.5

Food

7.4

Reviews

1 / 20
8.0
Excellent

David,Jan 2026

AKL - IAH

Couple of spare seats on this flight so people could spread a little. Much better than a full plane
Air New Zealand
8.0
Very Good
578 reviews
Air New Zealand
8.0
Very Good
578 reviews
Check prices

Comfort

8.0

Overall

8.0

Boarding

8.2

Entertainment

7.4

Crew

8.5

Food

7.4

Reviews

1 / 20
8.0
Excellent

David,Jan 2026

AKL - IAH

Couple of spare seats on this flight so people could spread a little. Much better than a full plane
Virgin Australia
7.6
Good
433 reviews
Air New Zealand
8.0
Very Good
578 reviews
Check prices

Comfort

8.0

Overall

8.0

Boarding

8.2

Entertainment

7.4

Crew

8.5

Food

7.4

Reviews

1 / 20
8.0
Excellent

David,Jan 2026

AKL - IAH

Couple of spare seats on this flight so people could spread a little. Much better than a full plane
Qantas Airways
7.5
Good
986 reviews
Air New Zealand
8.0
Very Good
578 reviews
Check prices

Comfort

8.0

Overall

8.0

Boarding

8.2

Entertainment

7.4

Crew

8.5

Food

7.4

Reviews

1 / 20
8.0
Excellent

David,Jan 2026

AKL - IAH

Couple of spare seats on this flight so people could spread a little. Much better than a full plane
United Airlines
7.4
Good
9,236 reviews
Air New Zealand
8.0
Very Good
578 reviews
Check prices

Comfort

8.0

Overall

8.0

Boarding

8.2

Entertainment

7.4

Crew

8.5

Food

7.4

Reviews

1 / 20
8.0
Excellent

David,Jan 2026

AKL - IAH

Couple of spare seats on this flight so people could spread a little. Much better than a full plane
Air Canada
7.1
Good
10,685 reviews
Air New Zealand
8.0
Very Good
578 reviews
Check prices

Comfort

8.0

Overall

8.0

Boarding

8.2

Entertainment

7.4

Crew

8.5

Food

7.4

Reviews

1 / 20
8.0
Excellent

David,Jan 2026

AKL - IAH

Couple of spare seats on this flight so people could spread a little. Much better than a full plane

Related info for your journey

Find useful and relevant information for your journey from Adelaide to Seattle. 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 Adelaide to Seattle?

    American Airlines can get you from Adelaide to Seattle in just under 26h 05m. Your travel time can differ by up to . There are 13409 km between Adelaide and Seattle.

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

    According to our current data, Air New Zealand ($875), Qantas Airways ($1,279), and Air Canada ($1,375) offers the cheapest pricing from Adelaide to Seattle. These flights start at 49% lower than the current average price 3 months from now.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Adelaide to Seattle 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

Travelling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Ocean Shores

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Alternative routes for Adelaide to Seattle

See prices for flight routes from nearby airports that may be better suited for you.
Adelaide to Portland flights

Top 5 airlines flying from Adelaide to Seattle

Discover the top 5 airlines that operate flights from Adelaide to Seattle. 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 647,157 searches. Data last updated 4 February 2026.
AirlineCheapestAverageFlexibilityOn-time
Air New ZealandCheapest$875Average$1,446FlexibilityNo cancel feeOn-time78%
Search Air New Zealand flights
Qantas AirwaysCheapest$1,279Average$1,692FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights
Air CanadaCheapest$1,375Average$1,521FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Virgin AustraliaCheapest$1,614Average$1,804FlexibilityNo cancel feeOn-time80%
Search Virgin Australia flights
United AirlinesCheapest$1,626Average$1,897FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Adelaide to Seattle?

Cheapflights helps you search for flights from Adelaide to Seattle via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Adelaide to Seattle?

Cheapflights simply makes it quick and affordable to book flights from Adelaide to Seattle by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Adelaide to Seattle with no change fees?

Certainly. Search results for flights to Seattle from Adelaide shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Adelaide to Seattle become cheaper?

Yes! Start tracking prices for Adelaide to Seattle flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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