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Cheap flights from Adelaide to Seattle from $1,112

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 14/2. Fares are subject to change and may not be available on all flights or dates of travel.
ADL — SEA
31 Jan — 7 Feb1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Adelaide to Seattle

Enter your travel dates to find the best prices.

Best flights from Adelaide to Seattle
Discover carefully curated flight deals from Adelaide to Seattle that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 1 January 2026.

Thu 12/207:50ADL - SEA
2 stops30h 38mQantas Airways
Thu 19/216:50SEA - ADL
2 stops26h 20mQantas Airways
Deal found 30/12$1,460
Thu 12/207:15ADL - SEA
3 stops32h 16mUnited Airlines
Thu 19/212:55SEA - ADL
2 stops26h 05mUnited Airlines
Deal found 30/12$1,845
Thu 19/306:10ADL - SEA
2 stops26h 21mAir Canada
Mon 23/310:05SEA - ADL
2 stops34h 20mAir Canada
Deal found 29/12$1,963
Thu 12/220:55ADL - SEA
3 stops30h 50mMultiple Airlines
Thu 19/208:45SEA - ADL
3 stops35h 05mMultiple Airlines
Deal found 30/12$2,298
Thu 12/218:35ADL - SEA
1 stop31h 05mSingapore Airlines
Thu 19/208:45SEA - ADL
1 stop38h 05mSingapore Airlines
Deal found 30/12$2,310
Thu 19/308:30ADL - SEA
2 stops25h 14mVirgin Australia
Mon 23/312:36SEA - ADL
1 stop26h 24mVirgin Australia
Deal found 31/12$2,683
Fri 13/207:50ADL - SEA
2 stops29h 37mQantas Airways
Fri 20/216:50SEA - ADL
2 stops28h 25mQantas Airways
Deal found 30/12$1,644
Fri 13/207:15ADL - SEA
2 stops27h 36mUnited Airlines
Fri 20/207:00SEA - ADL
3 stops33h 25mUnited Airlines
Deal found 30/12$1,960
Thu 19/310:35ADL - SEA
2 stops27h 37mQantas Airways
Mon 23/314:53SEA - ADL
2 stops25h 27mQantas Airways
Deal found 31/12$2,034
Fri 13/218:35ADL - SEA
1 stop31h 05mMultiple Airlines
Fri 20/216:50SEA - ADL
2 stops23h 35mMultiple Airlines
Deal found 30/12$2,493
Fri 13/218:35ADL - SEA
1 stop31h 05mSingapore Airlines
Fri 20/208:45SEA - ADL
1 stop38h 05mSingapore Airlines
Deal found 30/12$2,550

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 1 January 2026.

Round-trip from

$1,460

One-way from

$1,112

Popular in

April

Cheapest in

November

Average price

$1,613
Qantas Airways
  • Qantas Airways
  • 12/2-19/2
  • 4 total stops
  • 56h 58m total
  • Adelaide to Seattle
Search Deals
14/2
  • 14/2
  • 2 total stops
  • 22h 15m total
  • Adelaide to Seattle
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($322 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($100 potential savings vs. average return price).
Search Deals
Average for round-trip flights in January 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 1 January 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

Thu 12/2

07:50-19:58

2 stops30h 38m

Seattle/Tacoma Intl

Thu 19/2

16:50-13:40

2 stops26h 20m

$1,460

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Fri 13/2

07:50-18:57

2 stops29h 37m

Seattle/Tacoma Intl

Fri 20/2

16:50-15:45

2 stops28h 25m

$1,644

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Thu 12/2

07:15-21:01

3 stops32h 16m

Seattle/Tacoma Intl

Thu 19/2

12:55-09:30

2 stops26h 05m

$1,845

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Fri 13/2

07:15-16:21

2 stops27h 36m

Seattle/Tacoma Intl

Fri 20/2

07:00-10:55

3 stops33h 25m

$1,960

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Thu 19/3

06:10-15:01

2 stops26h 21m

Seattle/Tacoma Intl

Mon 23/3

10:05-13:55

2 stops34h 20m

$1,963

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Thu 19/3

10:35-20:42

2 stops27h 37m

Seattle/Tacoma Intl

Mon 23/3

14:53-09:50

2 stops25h 27m

$2,034

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Thu 12/2

20:55-09:15

3 stops30h 50m

Seattle/Tacoma Intl

Thu 19/2

08:45-14:20

3 stops35h 05m

$2,298

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Thu 12/2

18:35-07:10

1 stop31h 05m

Seattle/Tacoma Intl

Thu 19/2

08:45-17:20

1 stop38h 05m

$2,310

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Fri 13/2

18:35-07:10

1 stop31h 05m

Seattle/Tacoma Intl

Fri 20/2

16:50-10:55

2 stops23h 35m

$2,493

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Fri 13/2

18:35-07:10

1 stop31h 05m

Seattle/Tacoma Intl

Fri 20/2

08:45-17:20

1 stop38h 05m

$2,550

Flights are sorted by cheapest return flights first.

Deals found on 30/12

Showing 1-10 of 13 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 78% 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 $2,580.

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 43m.

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 1 January 2026.
See what other customers who have flown with Singapore Airlines, 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.
Singapore Airlines
8.1
Very Good
1,424 reviews
Check prices

Crew

8.6

Comfort

8.0

Entertainment

8.0

Overall

8.1

Food

7.8

Boarding

8.3

Reviews

1 / 20
10.0
Excellent

Wee Keng,Dec 2025

HKG - SIN

Quick 3 hour flight with excellent service from the crew despite it being Christmas Day holiday. Ground crew passed out Xmas cookies as well. Great experience.
Singapore Airlines
8.1
Very Good
1,424 reviews
Singapore Airlines
8.1
Very Good
1,424 reviews
Check prices

Crew

8.6

Comfort

8.0

Entertainment

8.0

Overall

8.1

Food

7.8

Boarding

8.3

Reviews

1 / 20
10.0
Excellent

Wee Keng,Dec 2025

HKG - SIN

Quick 3 hour flight with excellent service from the crew despite it being Christmas Day holiday. Ground crew passed out Xmas cookies as well. Great experience.
Virgin Australia
7.6
Good
433 reviews
Singapore Airlines
8.1
Very Good
1,424 reviews
Check prices

Crew

8.6

Comfort

8.0

Entertainment

8.0

Overall

8.1

Food

7.8

Boarding

8.3

Reviews

1 / 20
10.0
Excellent

Wee Keng,Dec 2025

HKG - SIN

Quick 3 hour flight with excellent service from the crew despite it being Christmas Day holiday. Ground crew passed out Xmas cookies as well. Great experience.
Qantas Airways
7.5
Good
960 reviews
Singapore Airlines
8.1
Very Good
1,424 reviews
Check prices

Crew

8.6

Comfort

8.0

Entertainment

8.0

Overall

8.1

Food

7.8

Boarding

8.3

Reviews

1 / 20
10.0
Excellent

Wee Keng,Dec 2025

HKG - SIN

Quick 3 hour flight with excellent service from the crew despite it being Christmas Day holiday. Ground crew passed out Xmas cookies as well. Great experience.
United Airlines
7.4
Good
9,132 reviews
Singapore Airlines
8.1
Very Good
1,424 reviews
Check prices

Crew

8.6

Comfort

8.0

Entertainment

8.0

Overall

8.1

Food

7.8

Boarding

8.3

Reviews

1 / 20
10.0
Excellent

Wee Keng,Dec 2025

HKG - SIN

Quick 3 hour flight with excellent service from the crew despite it being Christmas Day holiday. Ground crew passed out Xmas cookies as well. Great experience.
Air Canada
7.1
Good
10,571 reviews
Singapore Airlines
8.1
Very Good
1,424 reviews
Check prices

Crew

8.6

Comfort

8.0

Entertainment

8.0

Overall

8.1

Food

7.8

Boarding

8.3

Reviews

1 / 20
10.0
Excellent

Wee Keng,Dec 2025

HKG - SIN

Quick 3 hour flight with excellent service from the crew despite it being Christmas Day holiday. Ground crew passed out Xmas cookies as well. Great experience.

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, United Airlines, and Air Canada can get you from Adelaide to Seattle in just under 26h 21m. Your travel time can differ by up to 5h 55m. There are 13409 km between Adelaide and Seattle. This flight may include one or multiple stops.

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

    According to our current data, Air New Zealand ($917), Qantas Airways ($1,341), and Singapore Airlines ($1,391) 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 6 airlines flying from Adelaide to Seattle

Discover the top 6 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 1 January 2026.
AirlineCheapestAverageFlexibilityOn-time
Air New ZealandCheapest$917Average$1,516FlexibilityNo cancel feeOn-time78%
Search Air New Zealand flights
Qantas AirwaysCheapest$1,341Average$1,774FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights
Singapore AirlinesCheapest$1,391Average$1,641FlexibilityNo cancel feeOn-time81%
Search Singapore Airlines flights
Air CanadaCheapest$1,442Average$1,605FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Virgin AustraliaCheapest$1,693Average$1,931FlexibilityNo cancel feeOn-time80%
Search Virgin Australia flights
United AirlinesCheapest$1,705Average$2,000FlexibilityNo 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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