Find flights
When to book
Airlines
FAQs

Cheap flights from Adelaide to Seattle from $1,166

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 10/8. Fares are subject to change and may not be available on all flights or dates of travel.
ADL — SEA
26 Aug — 2 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 27 July 2026.

Mon 16/1110:15
ADL
-
SEA
1 stop39h 25m
Singapore Airlines
Sat 28/1108:45
SEA
-
ADL
1 stop38h 05m
Singapore Airlines
Deal found 26/7$1,692
Sun 9/820:00
ADL
-
SEA
3 stops41h 40m
United Airlines
Wed 26/817:20
SEA
-
ADL
2 stops25h 20m
United Airlines
Deal found 26/7$1,819
Thu 27/814:25
ADL
-
SEA
2 stops25h 58m
Multiple Airlines
Mon 31/807:20
SEA
-
ADL
2 stops36h 05m
Multiple Airlines
Deal found 26/7$1,849
Sat 8/814:25
ADL
-
SEA
2 stops34h 05m
Multiple Airlines
Wed 26/807:20
SEA
-
ADL
2 stops22h 45m
Multiple Airlines
Deal found 22/7$1,865
Fri 4/919:10
ADL
-
SEA
2 stops51h 31m
Multiple Airlines
Fri 11/907:20
SEA
-
ADL
2 stops43h 15m
Multiple Airlines
Deal found 22/7$1,875
Tue 24/1108:40
ADL
-
SEA
2 stops43h 30m
United Airlines
Tue 15/1223:59
SEA
-
ADL
2 stops63h 01m
United Airlines
Deal found 24/7$1,906
Wed 9/920:00
ADL
-
SEA
2 stops41h 59m
Multiple Airlines
Wed 16/907:20
SEA
-
ADL
2 stops32h 15m
Multiple Airlines
Deal found 26/7$1,918
Mon 16/1106:10
ADL
-
SEA
2 stops21h 47m
Air Canada
Sat 28/1119:05
SEA
-
ADL
2 stops24h 20m
Air Canada
Deal found 26/7$1,938
Tue 24/1106:10
ADL
-
SEA
2 stops21h 47m
Multiple Airlines
Fri 11/1219:05
SEA
-
ADL
2 stops27h 00m
Multiple Airlines
Deal found 27/7$1,981
Tue 24/1106:10
ADL
-
SEA
2 stops21h 47m
Multiple Airlines
Tue 15/1215:15
SEA
-
ADL
2 stops25h 10m
Multiple Airlines
Deal found 23/7$2,056

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 27 July 2026.

Round-trip from

$1,692

One-way from

$1,166

Popular in

May

Cheapest in

July

Average price

$1,455
Singapore Airlines
  • Singapore Airlines
  • 16/11-28/11
  • 2 total stops
  • 77h 30m total
  • Adelaide to Seattle
Search Deals
United Airlines
  • United Airlines
  • 10/8
  • 2 total stops
  • 23h 48m total
  • Adelaide to Seattle
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($326 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($96 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 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 27 July 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

Sun 9/8

20:00-21:10

3 stops41h 40m

Seattle/Tacoma Intl

Wed 26/8

17:20-11:10

2 stops25h 20m

$1,819

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Tue 24/11

06:10-18:22

2 stops30h 42m

Seattle/Tacoma Intl

Tue 15/12

15:15-10:55

2 stops25h 10m

$1,906

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Tue 24/11

06:10-09:27

2 stops21h 47m

Seattle/Tacoma Intl

Fri 11/12

19:05-16:35

2 stops27h 00m

$1,981
Fastest return journey

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Tue 24/11

06:10-09:27

2 stops21h 47m

Seattle/Tacoma Intl

Tue 15/12

15:15-10:55

2 stops25h 10m

$2,056

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Mon 14/9

20:00-21:31

3 stops42h 01m

Seattle/Tacoma Intl

Wed 30/9

12:16-10:05

2 stops29h 19m

$2,268

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Tue 24/11

19:50-07:10

2 stops29h 50m

Seattle/Tacoma Intl

Tue 15/12

08:45-08:50

1 stop29h 35m

$2,334

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Tue 24/11

10:15-07:10

1 stop39h 25m

Seattle/Tacoma Intl

Fri 11/12

08:45-17:20

1 stop38h 05m

$2,404
Cheapest one-way
Fastest single journey

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Mon 10/8

07:15-14:33

2 stops23h 48m

$1,166

Flights are sorted by cheapest return flights first.

Deals found on 27/7

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 44% 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 $1,521.

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 27 July 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
11,392 reviews
Check prices

Boarding

7.3

Entertainment

6.8

Overall

7.1

Crew

7.8

Food

6.3

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
11,392 reviews
Air Canada
7.1
Good
11,392 reviews
Check prices

Boarding

7.3

Entertainment

6.8

Overall

7.1

Crew

7.8

Food

6.3

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?

    United Airlines and Air Canada can get you from Adelaide to Seattle in just under 30h 42m. Your travel time can differ by up to 10h 58m. There are 13409 km between Adelaide and Seattle. This flight may include one or multiple stops.

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

    According to our current data, Air Canada ($1,192), offers the cheapest pricing from Adelaide to Seattle. This flight start at 32% 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 27 July 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$1,192Average$1,482FlexibilityNo 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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.