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Cheap flights from Adelaide to Seattle from $1,138

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 24/9. Fares are subject to change and may not be available on all flights or dates of travel.
ADL — SEA
13 Sep — 20 Sep1
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 14 August 2026.

Wed 23/922:00 -
1 stop31h 15m
Wed 30/916:25 -
1 stop30h 05m
Deal found 11/8$1,812
Wed 23/906:05 -
2 stops28h 58m
Wed 30/914:56 -
2 stops32h 19m
Deal found 11/8$1,893
Thu 10/922:00 -
1 stop31h 15m
Thu 17/916:25 -
1 stop30h 05m
Deal found 13/8$1,902
Tue 24/1106:10 -
2 stops30h 42m
Tue 15/1215:15 -
2 stops25h 10m
Deal found 14/8$1,907
Thu 10/914:25 -
2 stops23h 34m
Thu 17/910:36 -
2 stops43h 29m
Deal found 13/8$1,957
Tue 24/1106:10 -
2 stops21h 47m
Tue 15/1215:15 -
2 stops25h 10m
Deal found 13/8$1,970
Sun 27/922:00 -
1 stop31h 15m
Sun 4/1016:25 -
1 stop30h 05m
Deal found 12/8$2,206

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 14 August 2026.

Round-trip from

$1,812

One-way from

$1,138

Popular in

May

Cheapest in

July

Average price

$1,846
Qatar Airways
  • Qatar Airways
  • 23/9-30/9
  • 2 total stops
  • 61h 20m total
  • Adelaide to Seattle
Search Deals
24/9
  • 24/9
  • 3 total stops
  • 28h 41m total
  • Adelaide to Seattle
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($262 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($88 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 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 14 August 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 Adelaide - SEA Seattle/Tacoma Intl

ADLSEA

Adelaide

Wed 23/9

22:00-12:45

1 stop31h 15m

Seattle/Tacoma Intl

Wed 30/9

16:25-15:00

1 stop30h 05m

$1,812

AdelaideSeattle

ADL Adelaide - SEA Seattle/Tacoma Intl

ADLSEA

Adelaide

Thu 10/9

14:25-21:29

2 stops23h 34m

Seattle/Tacoma Intl

Thu 17/9

10:36-22:35

2 stops43h 29m

$1,957

AdelaideSeattle

ADL Adelaide - SEA Seattle/Tacoma Intl

ADLSEA

Adelaide

Sun 27/9

22:00-12:45

1 stop31h 15m

Seattle/Tacoma Intl

Sun 4/10

16:25-16:00

1 stop30h 05m

$2,206

AdelaideSeattle

ADL Adelaide - SEA Seattle/Tacoma Intl

ADLSEA

Adelaide

Thu 10/9

06:00-08:08

3 stops42h 38m

Seattle/Tacoma Intl

Thu 17/9

11:45-11:05

2 stops30h 50m

$2,820

AdelaideSeattle

ADL Adelaide - SEA Seattle/Tacoma Intl

ADLSEA

Adelaide

Wed 23/9

12:40-21:39

2 stops25h 29m

Seattle/Tacoma Intl

Wed 30/9

13:30-18:25

3 stops36h 25m

$2,878
Fastest return journey

AdelaideSeattle

ADL Adelaide - SEA Seattle/Tacoma Intl

ADLSEA

Adelaide

Sun 27/9

13:25-22:40

2 stops25h 45m

Seattle/Tacoma Intl

Sun 4/10

15:54-11:55

3 stops26h 31m

$2,948
Cheapest one-way
Fastest single journey

AdelaideSeattle

ADL Adelaide - SEA Seattle/Tacoma Intl

ADLSEA

Adelaide

Thu 24/9

06:25-18:36

3 stops28h 41m

$1,138

Flights are sorted by cheapest return flights first.

Deals found on 10/8

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 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.

San Francisco (SFO) is the most affordable one-stop option, with an average return flight price of $1,506.

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 17m.

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 14 August 2026.
See what other customers who have flown with Air Canada 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 Canada
7.1
Good
11,470 reviews
Check prices

Food

6.3

Overall

7.1

Entertainment

6.8

Crew

7.8

Boarding

7.3

Comfort

7.1

Reviews

1 / 20
6.0
Good

Paula,Mar 2026

YVR - PSP

Everything was OK, but we waited on the tarmac for an hour and 20 minutes after landing because there was no available gate. This is a daily occurrence at the Palm Springs airport, and happens with Air Canada and WestJet constantly.
Air Canada
7.1
Good
11,470 reviews
Air Canada
7.1
Good
11,470 reviews
Check prices

Food

6.3

Overall

7.1

Entertainment

6.8

Crew

7.8

Boarding

7.3

Comfort

7.1

Reviews

1 / 20
6.0
Good

Paula,Mar 2026

YVR - PSP

Everything was OK, but we waited on the tarmac for an hour and 20 minutes after landing because there was no available gate. This is a daily occurrence at the Palm Springs airport, and happens with Air Canada and WestJet constantly.

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?

    Qatar Airways can get you from Adelaide to Seattle in just under 31h 15m. Your travel time can differ by up to . There are 13409 km between Adelaide and Seattle.

  • What is the cheapest airline to fly from Adelaide to Seattle round-trip?

    According to our current data, Air Canada ($1,181), offers the cheapest pricing from Adelaide to Seattle. This flight start at 34% 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
Tukwila

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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 airline flying from Adelaide to Seattle

Discover the top airline 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 14 August 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$1,181Average$1,467FlexibilityNo cancel feeOn-time67%
Search Air Canada 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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