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Cheap flights from Adelaide to Seattle from $1,671

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/8. Fares are subject to change and may not be available on all flights or dates of travel.
ADL — SEA
21 Aug — 28 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 22 July 2026.

Wed 12/820:00
ADL
-
SEA
2 stops42h 04m
Multiple Airlines
Mon 17/808:00
SEA
-
ADL
2 stops22h 05m
Multiple Airlines
Deal found 19/7$1,671
Mon 10/820:00
ADL
-
SEA
2 stops42h 04m
Multiple Airlines
Wed 26/820:52
SEA
-
ADL
2 stops42h 48m
Multiple Airlines
Deal found 19/7$1,691
Wed 12/820:00
ADL
-
SEA
2 stops42h 04m
Multiple Airlines
Sun 23/820:52
SEA
-
ADL
2 stops33h 13m
Multiple Airlines
Deal found 19/7$1,693
Sat 1/811:50
ADL
-
SEA
2 stops28h 39m
Multiple Airlines
Sun 23/820:52
SEA
-
ADL
2 stops33h 13m
Multiple Airlines
Deal found 19/7$1,718
Fri 4/919:10
ADL
-
SEA
2 stops45h 13m
Multiple Airlines
Fri 11/907:20
SEA
-
ADL
2 stops22h 45m
Multiple Airlines
Deal found 21/7$1,741
Tue 21/713:25
ADL
-
SEA
2 stops24h 01m
Qantas Airways
Wed 5/817:10
SEA
-
ADL
2 stops26h 15m
Qantas Airways
Deal found 19/7$1,742
Sun 16/812:40
ADL
-
SEA
2 stops35h 50m
Multiple Airlines
Sun 23/820:52
SEA
-
ADL
2 stops33h 13m
Multiple Airlines
Deal found 19/7$1,793
Wed 25/1108:40
ADL
-
SEA
2 stops33h 06m
Virgin Australia
Tue 15/1219:32
SEA
-
ADL
2 stops30h 58m
Virgin Australia
Deal found 21/7$1,818
Tue 24/1108:40
ADL
-
SEA
2 stops22h 10m
United Airlines
Tue 15/1210:45
SEA
-
ADL
2 stops35h 05m
United Airlines
Deal found 20/7$1,838
Mon 10/817:50
ADL
-
SEA
3 stops38h 19m
Virgin Australia
Wed 26/813:16
SEA
-
ADL
2 stops29h 24m
Virgin Australia
Deal found 19/7$1,849

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 July 2026.

Round-trip from

$1,671

Popular in

May

Cheapest in

November

Average price

$1,451
12/8-17/8
  • 12/8-17/8
  • 4 total stops
  • 64h 09m total
  • Adelaide to Seattle
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($386 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($103 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 22 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

Fri 4/9

19:10-23:53

2 stops45h 13m

Seattle/Tacoma Intl

Fri 11/9

07:20-22:35

2 stops22h 45m

$1,741
Fastest return journey

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Tue 1/9

06:05-16:14

2 stops26h 39m

Seattle/Tacoma Intl

Tue 8/9

16:45-13:55

2 stops28h 40m

$1,839

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Fri 4/9

06:05-21:15

3 stops31h 40m

Seattle/Tacoma Intl

Fri 11/9

09:00-11:10

2 stops33h 40m

$1,996

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Tue 1/9

09:10-08:45

1 stop64h 05m

Seattle/Tacoma Intl

Tue 8/9

10:15-16:20

1 stop37h 35m

$2,244

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Tue 1/9

17:50-21:58

3 stops44h 38m

Seattle/Tacoma Intl

Tue 8/9

20:52-08:55

2 stops43h 33m

$2,315

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Sat 1/8

11:50-14:22

3 stops43h 02m

Seattle/Tacoma Intl

Sun 23/8

15:00-11:10

2 stops27h 40m

$2,401

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Fri 4/9

17:35-08:45

1 stop31h 40m

Seattle/Tacoma Intl

Fri 11/9

10:15-16:20

1 stop61h 35m

$2,450

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Sun 16/8

19:45-20:56

2 stops41h 41m

Seattle/Tacoma Intl

Sun 23/8

16:25-15:00

1 stop30h 05m

$2,762

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Sat 1/8

06:00-08:47

3 stops43h 17m

Seattle/Tacoma Intl

Sun 23/8

07:18-13:35

3 stops37h 47m

$3,427

Flights are sorted by cheapest return flights first.

Deals found on 21/7

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

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 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
11,371 reviews
Check prices

Comfort

7.1

Entertainment

6.8

Food

6.3

Boarding

7.3

Crew

7.8

Overall

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
11,371 reviews
Air Canada
7.1
Good
11,371 reviews
Check prices

Comfort

7.1

Entertainment

6.8

Food

6.3

Boarding

7.3

Crew

7.8

Overall

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?

    Virgin Australia, United Airlines, and Singapore Airlines can get you from Adelaide to Seattle in just under 26h 39m. Your travel time can differ by up to 37h 26m. 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 ($1,189), offers the cheapest pricing from Adelaide to Seattle. This flight start at 30% 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 22 July 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$1,189Average$1,477FlexibilityNo 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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