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Cheap flights from Adelaide to Seattle from $1,267

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 22/9. Fares are subject to change and may not be available on all flights or dates of travel.
ADL — SEA
30 Jul — 6 Aug1
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 30 June 2026.

Tue 11/814:25
ADL
-
SEA
2 stops24h 46m
Qantas Airways
Tue 18/817:10
SEA
-
ADL
2 stops25h 25m
Qantas Airways
Deal found 27/6$1,757
Tue 21/713:25
ADL
-
SEA
2 stops24h 01m
Qantas Airways
Wed 5/817:10
SEA
-
ADL
2 stops26h 15m
Qantas Airways
Deal found 29/6$1,763
Mon 27/718:50
ADL
-
SEA
2 stops36h 10m
Virgin Australia
Mon 3/817:04
SEA
-
ADL
2 stops25h 31m
Virgin Australia
Deal found 29/6$1,822
Tue 11/820:00
ADL
-
SEA
3 stops56h 50m
United Airlines
Tue 18/815:30
SEA
-
ADL
2 stops27h 05m
United Airlines
Deal found 29/6$1,828
Tue 24/1106:10
ADL
-
SEA
2 stops21h 47m
Air Canada
Tue 15/1219:05
SEA
-
ADL
2 stops24h 20m
Air Canada
Deal found 25/6$1,840
Fri 11/1206:10
ADL
-
SEA
2 stops22h 41m
United Airlines
Sun 3/122:40
SEA
-
ADL
2 stops40h 20m
United Airlines
Deal found 29/6$1,843
Mon 24/807:15
ADL
-
SEA
2 stops27h 44m
Virgin Australia
Thu 27/817:20
SEA
-
ADL
2 stops27h 55m
Virgin Australia
Deal found 29/6$1,862

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 30 June 2026.

Round-trip from

$1,757

One-way from

$1,267

Popular in

June

Cheapest in

August

Average price

$1,879
Qantas Airways
  • Qantas Airways
  • 11/8-18/8
  • 4 total stops
  • 50h 11m total
  • Adelaide to Seattle
Search Deals
22/9
  • 22/9
  • 2 total stops
  • 22h 04m total
  • Adelaide to Seattle
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($130 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($50 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 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 30 June 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 11/8

20:00-12:20

3 stops56h 50m

Seattle/Tacoma Intl

Tue 18/8

15:30-11:05

2 stops27h 05m

$1,828
Fastest return journey

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Tue 24/11

06:10-09:27

2 stops21h 47m

Seattle/Tacoma Intl

Tue 15/12

19:05-13:55

2 stops24h 20m

$1,840

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Tue 24/11

06:10-14:37

2 stops26h 57m

Seattle/Tacoma Intl

Fri 11/12

19:05-16:25

2 stops26h 50m

$1,908

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Fri 17/7

06:40-12:34

2 stops22h 24m

Seattle/Tacoma Intl

Thu 30/7

10:29-11:05

2 stops32h 06m

$1,931

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Mon 21/12

14:55-21:12

2 stops24h 47m

Seattle/Tacoma Intl

Tue 19/1

06:29-14:10

2 stops37h 11m

$2,388

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Tue 24/11

06:00-21:23

3 stops33h 53m

Seattle/Tacoma Intl

Tue 15/12

12:15-13:55

2 stops31h 10m

$2,393

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

$2,396
Cheapest one-way
Fastest single journey

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Tue 22/9

12:05-17:39

2 stops22h 04m

$1,267

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Tue 22/9

20:00-21:15

3 stops41h 45m

$1,358

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Tue 22/9

22:00-12:45

1 stop31h 15m

$1,795

Flights are sorted by cheapest return flights first.

Deals found on 25/6

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

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 30 June 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
11,275 reviews
Check prices

Entertainment

6.8

Food

6.3

Crew

7.8

Boarding

7.3

Overall

7.1

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
11,275 reviews
Air Canada
7.1
Good
11,275 reviews
Check prices

Entertainment

6.8

Food

6.3

Crew

7.8

Boarding

7.3

Overall

7.1

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 21h 47m. Your travel time can differ by up to 35h 03m. 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 ($1,209), offers the cheapest pricing from Adelaide to Seattle. This flight start at 23% 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

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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 30 June 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$1,209Average$1,502FlexibilityNo 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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