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Cheap flights from Adelaide to Seattle from $1,076

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 18/11. Fares are subject to change and may not be available on all flights or dates of travel.
ADL — SEA
21 Jun — 28 Jun1
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 22 May 2026.

Tue 21/713:25
ADL
-
SEA
2 stops24h 01m
Qantas Airways
Wed 5/818:10
SEA
-
ADL
2 stops25h 15m
Qantas Airways
Deal found 21/5$1,684
Tue 9/606:05
ADL
-
SEA
2 stops24h 55m
Virgin Australia
Tue 16/613:30
SEA
-
ADL
2 stops29h 05m
Virgin Australia
Deal found 17/5$1,791
Mon 1/620:00
ADL
-
SEA
2 stops34h 50m
Air Canada
Thu 4/619:20
SEA
-
ADL
2 stops28h 05m
Air Canada
Deal found 18/5$1,833
Thu 13/806:05
ADL
-
SEA
2 stops22h 45m
Virgin Australia
Thu 3/917:20
SEA
-
ADL
2 stops25h 15m
Virgin Australia
Deal found 19/5$1,862
Fri 17/717:10
ADL
-
SEA
2 stops45h 05m
Qantas Airways
Thu 30/714:20
SEA
-
ADL
2 stops29h 05m
Qantas Airways
Deal found 21/5$1,931
Fri 17/706:40
ADL
-
SEA
2 stops24h 20m
United Airlines
Thu 30/715:33
SEA
-
ADL
2 stops27h 02m
United Airlines
Deal found 18/5$1,982
Thu 13/817:35
ADL
-
SEA
1 stop31h 40m
Multiple Airlines
Thu 3/907:18
SEA
-
ADL
2 stops31h 37m
Multiple Airlines
Deal found 19/5$2,047
Mon 8/618:55
ADL
-
SEA
2 stops31h 40m
Multiple Airlines
Sat 13/619:20
SEA
-
ADL
2 stops23h 20m
Multiple Airlines
Deal found 20/5$2,125

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 22 May 2026.

Round-trip from

$1,684

One-way from

$1,076

Popular in

December

Cheapest in

November

Average price

$1,572
Qantas Airways
  • Qantas Airways
  • 21/7-5/8
  • 4 total stops
  • 49h 16m total
  • Adelaide to Seattle
Search Deals
18/11
  • 18/11
  • 3 total stops
  • 29h 41m total
  • Adelaide to Seattle
Search Deals
High demand for flights, 3% potential price rise
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($30 potential savings vs. average return price).
Search Deals
Average for round-trip flights in May 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 22 May 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 9/6

06:05-14:30

2 stops24h 55m

Seattle/Tacoma Intl

Tue 16/6

13:30-11:05

2 stops29h 05m

$1,791

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Fri 17/7

17:10-21:45

2 stops45h 05m

Seattle/Tacoma Intl

Thu 30/7

14:20-11:55

2 stops29h 05m

$1,931

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Fri 17/7

06:40-14:30

2 stops24h 20m

Seattle/Tacoma Intl

Thu 30/7

15:33-11:05

2 stops27h 02m

$1,982
Fastest return journey

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Tue 21/7

06:00-12:48

2 stops23h 18m

Seattle/Tacoma Intl

Wed 5/8

18:10-13:35

3 stops26h 55m

$2,496

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Thu 12/11

06:10-21:57

2 stops34h 17m

Seattle/Tacoma Intl

Mon 16/11

08:40-18:10

2 stops39h 00m

$2,656

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Fri 17/7

13:25-21:45

2 stops24h 50m

Seattle/Tacoma Intl

Thu 30/7

16:36-11:55

3 stops26h 49m

$2,752
Cheapest one-way
Fastest single journey

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Wed 18/11

19:00-00:04

2 stops23h 34m

$1,149

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Mon 22/6

06:40-01:29

2 stops35h 19m

$1,156

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Thu 18/6

06:05-09:22

2 stops43h 47m

$1,156

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Tue 16/6

20:00-21:10

3 stops41h 40m

$1,166

Flights are sorted by cheapest return flights first.

Deals found on 21/5

Showing 1-10 of 16 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

How much does it cost for a return flight from Adelaide to Seattle?

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 22 May 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
454 reviews
Check prices

Crew

8.2

Comfort

7.5

Boarding

7.7

Entertainment

6.4

Overall

7.6

Food

6.4

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
454 reviews
Virgin Australia
7.6
Good
454 reviews
Check prices

Crew

8.2

Comfort

7.5

Boarding

7.7

Entertainment

6.4

Overall

7.6

Food

6.4

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
1,038 reviews
Virgin Australia
7.6
Good
454 reviews
Check prices

Crew

8.2

Comfort

7.5

Boarding

7.7

Entertainment

6.4

Overall

7.6

Food

6.4

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
9,751 reviews
Virgin Australia
7.6
Good
454 reviews
Check prices

Crew

8.2

Comfort

7.5

Boarding

7.7

Entertainment

6.4

Overall

7.6

Food

6.4

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
11,075 reviews
Virgin Australia
7.6
Good
454 reviews
Check prices

Crew

8.2

Comfort

7.5

Boarding

7.7

Entertainment

6.4

Overall

7.6

Food

6.4

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.

  • How long is the flight from Adelaide to Seattle?

    Virgin Australia, Qantas Airways, and Air Canada can get you from Adelaide to Seattle in just under 24h 55m. Your travel time can differ by up to 20h 10m. 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 Canada ($1,168), Qantas Airways ($1,169), and United Airlines ($1,476) offers the cheapest pricing from Adelaide to Seattle. These flights start at 26% 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
SeaTac
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 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 22 May 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$1,168Average$1,451FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Qantas AirwaysCheapest$1,169Average$1,592FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights
United AirlinesCheapest$1,476Average$1,611FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Virgin AustraliaCheapest$1,516Average$1,683FlexibilityNo 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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