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Cheap flights from Adelaide to Seattle from $835

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 25/5. Fares are subject to change and may not be available on all flights or dates of travel.
ADL — SEA
17 Apr — 24 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 18 March 2026.

Mon 1/616:30
ADL
-
SEA
2 stops33h 50m
Air Canada
Tue 16/614:55
SEA
-
ADL
2 stops30h 30m
Air Canada
Deal found 16/3$1,460
Wed 29/420:00
ADL
-
SEA
2 stops30h 08m
Air Canada
Wed 6/519:20
SEA
-
ADL
2 stops24h 00m
Air Canada
Deal found 15/3$1,499
Tue 21/714:45
ADL
-
SEA
2 stops23h 44m
Multiple Airlines
Wed 5/812:00
SEA
-
ADL
2 stops27h 30m
Multiple Airlines
Deal found 17/3$1,547
Fri 30/1006:10
ADL
-
SEA
2 stops21h 11m
Air Canada
Mon 2/1110:35
SEA
-
ADL
2 stops39h 40m
Air Canada
Deal found 16/3$1,614
Fri 1/512:40
ADL
-
SEA
2 stops25h 32m
Multiple Airlines
Fri 8/508:00
SEA
-
ADL
2 stops22h 05m
Multiple Airlines
Deal found 17/3$1,626
Fri 30/1017:10
ADL
-
SEA
2 stops23h 46m
Multiple Airlines
Mon 2/1107:00
SEA
-
ADL
2 stops36h 15m
Multiple Airlines
Deal found 14/3$1,695
Fri 17/717:10
ADL
-
SEA
2 stops22h 04m
Multiple Airlines
Thu 30/715:59
SEA
-
ADL
3 stops24h 56m
Multiple Airlines
Deal found 17/3$1,715
Thu 30/413:15
ADL
-
SEA
2 stops26h 13m
Multiple Airlines
Thu 7/518:40
SEA
-
ADL
2 stops24h 45m
Multiple Airlines
Deal found 16/3$1,736

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 18 March 2026.

Round-trip from

$1,460

One-way from

$835

Popular in

June

Cheapest in

November

Average price

$1,684
Air Canada
  • Air Canada
  • 1/6-16/6
  • 4 total stops
  • 64h 20m total
  • Adelaide to Seattle
Search Deals
25/5
  • 25/5
  • 2 total stops
  • 28h 24m total
  • Adelaide to Seattle
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($140 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($39 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 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 18 March 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

Cheapest return flight

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Tue 21/7

06:00-12:51

2 stops23h 21m

Seattle/Tacoma Intl

Wed 5/8

16:17-09:25

2 stops24h 38m

$1,553
Fastest return journey

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Fri 17/7

17:10-22:44

2 stops22h 04m

Seattle/Tacoma Intl

Thu 30/7

17:12-09:25

2 stops23h 43m

$1,715

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Thu 30/4

13:15-22:58

2 stops26h 13m

Seattle/Tacoma Intl

Thu 7/5

18:40-11:55

2 stops24h 45m

$1,736

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Tue 30/6

20:00-21:10

3 stops41h 40m

Seattle/Tacoma Intl

Tue 25/8

17:22-11:05

2 stops25h 13m

$1,942

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Fri 17/7

17:35-08:45

1 stop31h 40m

Seattle/Tacoma Intl

Thu 30/7

10:15-16:20

1 stop37h 35m

$2,096
Cheapest one-way

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Tue 28/4

13:40-19:53

2 stops46h 43m

$882

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Mon 24/8

12:05-21:56

2 stops26h 21m

$992

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Mon 25/5

16:30-09:50

3 stops33h 50m

$1,001

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Mon 24/8

07:05-20:05

3 stops53h 30m

$1,058
Fastest single journey

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Wed 25/3

14:15-22:59

2 stops26h 14m

$1,622

Flights are sorted by cheapest return flights first.

Deals found on 14/3

Showing 1-10 of 15 resultsSorted by cheapest first
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 50% 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.

Doha (DOH) is the most affordable one-stop option, with an average return flight price of $3,443.

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 18 March 2026.
See what other customers who have flown with Virgin Australia,Qantas Airways, andUnited Airlines 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.
Virgin Australia
7.6
Good
449 reviews
Check prices

Boarding

7.7

Comfort

7.5

Entertainment

6.4

Food

6.4

Overall

7.6

Crew

8.2

Reviews

1 / 20
8.0
Excellent

Elio,Jan 2026

MEL - ADL

Starting to be as efficient as qantas… bar the food offerings Virgin is up there now
Virgin Australia
7.6
Good
449 reviews
Virgin Australia
7.6
Good
449 reviews
Check prices

Boarding

7.7

Comfort

7.5

Entertainment

6.4

Food

6.4

Overall

7.6

Crew

8.2

Reviews

1 / 20
8.0
Excellent

Elio,Jan 2026

MEL - ADL

Starting to be as efficient as qantas… bar the food offerings Virgin is up there now
Qantas Airways
7.5
Good
1,006 reviews
Virgin Australia
7.6
Good
449 reviews
Check prices

Boarding

7.7

Comfort

7.5

Entertainment

6.4

Food

6.4

Overall

7.6

Crew

8.2

Reviews

1 / 20
8.0
Excellent

Elio,Jan 2026

MEL - ADL

Starting to be as efficient as qantas… bar the food offerings Virgin is up there now
United Airlines
7.4
Good
9,434 reviews
Virgin Australia
7.6
Good
449 reviews
Check prices

Boarding

7.7

Comfort

7.5

Entertainment

6.4

Food

6.4

Overall

7.6

Crew

8.2

Reviews

1 / 20
8.0
Excellent

Elio,Jan 2026

MEL - ADL

Starting to be as efficient as qantas… bar the food offerings Virgin is up there now
Air Canada
7.1
Good
10,813 reviews
Virgin Australia
7.6
Good
449 reviews
Check prices

Boarding

7.7

Comfort

7.5

Entertainment

6.4

Food

6.4

Overall

7.6

Crew

8.2

Reviews

1 / 20
8.0
Excellent

Elio,Jan 2026

MEL - ADL

Starting to be as efficient as qantas… bar the food offerings Virgin is up there now

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.

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

    According to our current data, Air Canada ($1,175), Qantas Airways ($1,264), and United Airlines ($1,485) offers the cheapest pricing from Adelaide to Seattle. These flights start at 27% 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
SeaTac

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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 4 airlines flying from Adelaide to Seattle

Discover the top 4 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 18 March 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$1,175Average$1,513FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Qantas AirwaysCheapest$1,264Average$1,630FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights
United AirlinesCheapest$1,485Average$1,826FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Virgin AustraliaCheapest$1,595Average$1,684FlexibilityNo 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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