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Cheap flights from Adelaide to Seattle from $1,591

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/3. Fares are subject to change and may not be available on all flights or dates of travel.
ADL — SEA
28 Mar — 4 Apr1
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 26 February 2026.

Sun 1/312:05
ADL
-
SEA
2 stops25h 22m
Qantas Airways
Thu 5/306:32
SEA
-
ADL
2 stops32h 48m
Qantas Airways
Deal found 25/2$1,591
Fri 17/717:10
ADL
-
SEA
2 stops22h 04m
Qantas Airways
Thu 30/714:32
SEA
-
ADL
2 stops28h 13m
Qantas Airways
Deal found 25/2$1,606
Tue 21/713:25
ADL
-
SEA
2 stops26h 00m
Qantas Airways
Wed 5/814:32
SEA
-
ADL
2 stops28h 53m
Qantas Airways
Deal found 25/2$1,692
Thu 11/606:05
ADL
-
SEA
2 stops24h 55m
Virgin Australia
Tue 30/617:20
SEA
-
ADL
2 stops25h 15m
Virgin Australia
Deal found 24/2$1,767
Thu 9/706:05
ADL
-
SEA
2 stops33h 35m
Virgin Australia
Sun 19/708:45
SEA
-
ADL
2 stops33h 50m
Virgin Australia
Deal found 26/2$1,775
Thu 9/408:05
ADL
-
SEA
2 stops27h 55m
Multiple Airlines
Wed 15/401:30
SEA
-
ADL
2 stops36h 25m
Multiple Airlines
Deal found 23/2$1,896

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 26 February 2026.

Round-trip from

$1,606

Popular in

December

Cheapest in

November

Average price

$1,483
Qantas Airways
  • Qantas Airways
  • 17/7-30/7
  • 4 total stops
  • 50h 17m total
  • Adelaide to Seattle
Search Deals
High demand for flights, 1% potential price rise
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Cheapest flight prices on average. 2% potential price decrease ($49 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 2026
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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 26 February 2026.
Use the filters below to find and compare flights from Adelaide to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Fri 17/7

06:00-22:55

2 stops33h 25m

Seattle/Tacoma Intl

Thu 30/7

14:32-11:05

2 stops28h 03m

$1,754

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Thu 4/6

14:30-21:53

2 stops23h 53m

Seattle/Tacoma Intl

Mon 29/6

08:00-22:35

2 stops22h 05m

$2,070

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Fri 17/7

17:35-08:45

1 stop31h 40m

Seattle/Tacoma Intl

Thu 30/7

07:20-07:25

2 stops31h 35m

$2,217

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Tue 21/7

06:00-12:51

2 stops23h 21m

Seattle/Tacoma Intl

Wed 5/8

18:07-13:35

3 stops26h 58m

$2,298

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Thu 11/6

06:00-08:50

3 stops43h 20m

Seattle/Tacoma Intl

Tue 30/6

12:25-13:35

2 stops32h 40m

$2,408

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Thu 9/7

19:45-15:37

3 stops36h 22m

Seattle/Tacoma Intl

Sun 19/7

07:00-17:45

3 stops42h 15m

$3,155

Flights are sorted by cheapest return flights first.

Deals found on 26/2

Sorted by cheapest first

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 57% 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 $3,302.

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 26 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
605 reviews
Check prices

Food

7.4

Crew

8.5

Boarding

8.2

Comfort

8.0

Overall

8.0

Entertainment

7.4

Reviews

1 / 20
10.0
Excellent

Marsha,Feb 2026

LAX - AKL

Air New Zealand is a great airline. Airline staff made us feel welcome and flight attendants were attentive and kind.
Air New Zealand
8.0
Very Good
605 reviews
Air New Zealand
8.0
Very Good
605 reviews
Check prices

Food

7.4

Crew

8.5

Boarding

8.2

Comfort

8.0

Overall

8.0

Entertainment

7.4

Reviews

1 / 20
10.0
Excellent

Marsha,Feb 2026

LAX - AKL

Air New Zealand is a great airline. Airline staff made us feel welcome and flight attendants were attentive and kind.
Virgin Australia
7.6
Good
445 reviews
Air New Zealand
8.0
Very Good
605 reviews
Check prices

Food

7.4

Crew

8.5

Boarding

8.2

Comfort

8.0

Overall

8.0

Entertainment

7.4

Reviews

1 / 20
10.0
Excellent

Marsha,Feb 2026

LAX - AKL

Air New Zealand is a great airline. Airline staff made us feel welcome and flight attendants were attentive and kind.
Qantas Airways
7.5
Good
998 reviews
Air New Zealand
8.0
Very Good
605 reviews
Check prices

Food

7.4

Crew

8.5

Boarding

8.2

Comfort

8.0

Overall

8.0

Entertainment

7.4

Reviews

1 / 20
10.0
Excellent

Marsha,Feb 2026

LAX - AKL

Air New Zealand is a great airline. Airline staff made us feel welcome and flight attendants were attentive and kind.
United Airlines
7.4
Good
9,348 reviews
Air New Zealand
8.0
Very Good
605 reviews
Check prices

Food

7.4

Crew

8.5

Boarding

8.2

Comfort

8.0

Overall

8.0

Entertainment

7.4

Reviews

1 / 20
10.0
Excellent

Marsha,Feb 2026

LAX - AKL

Air New Zealand is a great airline. Airline staff made us feel welcome and flight attendants were attentive and kind.
Air Canada
7.1
Good
10,748 reviews
Air New Zealand
8.0
Very Good
605 reviews
Check prices

Food

7.4

Crew

8.5

Boarding

8.2

Comfort

8.0

Overall

8.0

Entertainment

7.4

Reviews

1 / 20
10.0
Excellent

Marsha,Feb 2026

LAX - AKL

Air New Zealand is a great airline. Airline staff made us feel welcome and flight attendants were attentive and kind.

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?

    Qantas Airways can get you from Adelaide to Seattle in just under 33h 25m. 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 ($863), Air Canada ($1,173), and Qantas Airways ($1,261) offers the cheapest pricing from Adelaide to Seattle. These flights start at 47% 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 26 February 2026.
AirlineCheapestAverageFlexibilityOn-time
Air New ZealandCheapest$863Average$1,186FlexibilityNo cancel feeOn-time78%
Search Air New Zealand flights
Air CanadaCheapest$1,173Average$1,510FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Qantas AirwaysCheapest$1,261Average$1,669FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights
United AirlinesCheapest$1,483Average$1,822FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Virgin AustraliaCheapest$1,592Average$1,711FlexibilityNo cancel feeOn-time80%
Search Virgin Australia 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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