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Cheap flights from Adelaide to Seattle from $807

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 27/8. Fares are subject to change and may not be available on all flights or dates of travel.
ADL — SEA
18 Jun — 25 Jun1
1 adult

Cheapflights Tip: The best prices from Adelaide to Seattle/Tacoma Intl are usually found in November or March, booked 53 days in advance, depart on a Tuesday or Monday and return on a Monday

Cheap 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 13 June 2025.

Round-trip from

$1,839

One-way from

$807

Popular in

December

Cheapest in

November

Average price

$2,051
Virgin Australia
  • Virgin Australia
  • 29/7-27/8
  • 4 total stops
  • 70h 35m total
  • Adelaide to Seattle
Search Deals
27/8
  • 27/8
  • 3 total stops
  • 45h 22m total
  • Adelaide to Seattle
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($228 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($92 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 2025
Search Deals

Find flight deals from Adelaide to Seattle

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 13 June 2025.

Mon 15/1214:55ADL - SEA
1 stop18h 50mUnited Airlines
Sat 17/112:50SEA - ADL
1 stop26h 10mUnited Airlines
Deal found 11/6$1,784
Tue 29/706:05ADL - SEA
2 stops35h 24mVirgin Australia
Wed 27/814:29SEA - ADL
2 stops35h 11mVirgin Australia
Deal found 11/6$1,839
Wed 23/712:00ADL - SEA
2 stops27h 54mMultiple Airlines
Wed 30/720:26SEA - ADL
2 stops46h 24mMultiple Airlines
Deal found 11/6$1,974
Sun 3/818:10ADL - SEA
2 stops42h 05mChina Airlines
Tue 26/801:40SEA - ADL
2 stops45h 25mChina Airlines
Deal found 11/6$2,272
Fri 1/817:35ADL - SEA
1 stop31h 40mSingapore Airlines
Thu 28/807:00SEA - ADL
2 stops31h 55mSingapore Airlines
Deal found 11/6$2,610
Wed 17/1211:40ADL - SEA
2 stops25h 41mQantas Airways
Tue 20/115:35SEA - ADL
2 stops26h 10mQantas Airways
Deal found 11/6$3,081
Wed 23/721:40ADL - SEA
1 stop31h 35mQatar Airways
Wed 30/716:30SEA - ADL
1 stop30h 50mQatar Airways
Deal found 11/6$3,305
Tue 29/721:50ADL - SEA
1 stop32h 05mEmirates
Wed 27/817:15SEA - ADL
1 stop34h 20mEmirates
Deal found 11/6$3,637

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 13 June 2025.
Use the filters below to find and compare flights from Adelaide to Seattle that are best for you.

Fly from

Adelaide

Fly to

Seattle

Route

Depart

Return

Price

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Tue 29/7

06:05-00:59

2 stops35h 24m

Seattle/Tacoma Intl

Wed 27/8

14:29-18:10

2 stops35h 11m

$1,839

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Fri 1/8

06:05-20:57

3 stops31h 22m

Seattle/Tacoma Intl

Thu 28/8

14:29-11:05

2 stops28h 06m

$1,845

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Wed 23/7

12:00-23:24

2 stops27h 54m

Seattle/Tacoma Intl

Wed 30/7

20:26-11:20

2 stops46h 24m

$1,974

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Sun 3/8

18:10-19:45

2 stops42h 05m

Seattle/Tacoma Intl

Tue 26/8

01:40-15:35

2 stops45h 25m

$2,272

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Fri 1/8

17:35-08:45

1 stop31h 40m

Seattle/Tacoma Intl

Thu 28/8

07:00-07:25

2 stops31h 55m

$2,610

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Wed 23/7

21:40-12:45

1 stop31h 35m

Seattle/Tacoma Intl

Wed 30/7

16:30-15:50

1 stop30h 50m

$3,305

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Tue 29/7

21:50-13:25

1 stop32h 05m

Seattle/Tacoma Intl

Wed 27/8

17:15-20:05

1 stop34h 20m

$3,637

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Wed 27/8

12:00-16:52

3 stops45h 22m

$807

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Fri 22/8

08:55-21:33

2 stops29h 08m

$1,056

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Wed 27/8

21:40-12:45

1 stop31h 35m

$2,066

Flights are sorted by cheapest return flights first.

Deals found on 11/6

Showing 1-10 of 11 results
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 far ahead should I book a flight from Adelaide to Seattle?

Use this chart to determine the optimal time to book a return flight from Adelaide to Seattle. Price data was last updated on 9 June 2025.

The best time to book flights from Adelaide to Seattle is 53 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Adelaide to Seattle?

Currently, March is the cheapest month in which you can book a flight from Adelaide to Seattle (average of $875). Flying from Adelaide to Seattle in December is currently the most expensive (average of $1,433). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from ADL to SEA?

Find hourly flight availability from Adelaide to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 13 June 2025.

Unlike at midday, when flights are generally more expensive, you can save up to 26% on flights from Adelaide to Seattle by exploring options for tickets in the afternoon.

Rainfall in Seattle by month

Plan your trip to Seattle by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Seattle ranges from 18.0 - 168.0 inches per month. November is typically the wettest month, when rainfall can reach 168.0 mm. July is typically the driest time to visit Seattle when rainfall is around 18.0 mm.

Temperature in Seattle by month

Plan your trip to Seattle by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Seattle, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 19.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 5.0 C).

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 13 June 2025.
China Airlines
8.3
Very Good
738 reviews
Check prices

Boarding

8.3

Comfort

8.0

Food

7.8

Overall

8.3

Entertainment

8.0

Crew

8.5

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2025

YVR - TPE

I like the system, but the problem is the food , thre is no option, as a chef i don't recommend the food is worst we keep our hungry until taipe from vancouver
China Airlines
8.3
Very Good
738 reviews
China Airlines
8.3
Very Good
738 reviews
Check prices

Boarding

8.3

Comfort

8.0

Food

7.8

Overall

8.3

Entertainment

8.0

Crew

8.5

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2025

YVR - TPE

I like the system, but the problem is the food , thre is no option, as a chef i don't recommend the food is worst we keep our hungry until taipe from vancouver
Emirates
8.1
Very Good
3,265 reviews
China Airlines
8.3
Very Good
738 reviews
Check prices

Boarding

8.3

Comfort

8.0

Food

7.8

Overall

8.3

Entertainment

8.0

Crew

8.5

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2025

YVR - TPE

I like the system, but the problem is the food , thre is no option, as a chef i don't recommend the food is worst we keep our hungry until taipe from vancouver
Singapore Airlines
8.1
Very Good
1,302 reviews
China Airlines
8.3
Very Good
738 reviews
Check prices

Boarding

8.3

Comfort

8.0

Food

7.8

Overall

8.3

Entertainment

8.0

Crew

8.5

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2025

YVR - TPE

I like the system, but the problem is the food , thre is no option, as a chef i don't recommend the food is worst we keep our hungry until taipe from vancouver
Qantas Airways
7.5
Good
854 reviews
China Airlines
8.3
Very Good
738 reviews
Check prices

Boarding

8.3

Comfort

8.0

Food

7.8

Overall

8.3

Entertainment

8.0

Crew

8.5

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2025

YVR - TPE

I like the system, but the problem is the food , thre is no option, as a chef i don't recommend the food is worst we keep our hungry until taipe from vancouver
Virgin Australia
7.5
Good
407 reviews
China Airlines
8.3
Very Good
738 reviews
Check prices

Boarding

8.3

Comfort

8.0

Food

7.8

Overall

8.3

Entertainment

8.0

Crew

8.5

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2025

YVR - TPE

I like the system, but the problem is the food , thre is no option, as a chef i don't recommend the food is worst we keep our hungry until taipe from vancouver

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.

  • What are the cheapest airlines flying from Adelaide to Seattle round-trip?

    According to our current data, Virgin Australia ($1,839), United Airlines ($1,845), and China Airlines ($2,272) offers the cheapest pricing from Adelaide to Seattle. These flights start at 9% lower than the current average price 3 months from now.

  • What are the cheapest airlines to fly from Adelaide to Seattle one-way?

    The cheapet airlines for a one-way flight from Adelaide to Seattle are Qantas Airways ($1,056), Qatar Airways ($2,066), and Singapore Airlines ($2,195).

  • 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.

  • What is the cheapest month to book a flight from Adelaide to Seattle?

    Currently, March is the cheapest month in which you can book a flight from Adelaide to Seattle (average of $875). Flying from Adelaide to Seattle in December is currently the most expensive (average of $1,433). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near Adelaide?

Book flights to Adelaide if you plan to visit one of these locations
Leavenworth

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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 5 airlines flying from Adelaide to Seattle

Discover the top 5 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 13 June 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$969Average$2,061FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Singapore AirlinesCheapest$1,427Average$1,786FlexibilityNo cancel feeOn-time81%
Search Singapore Airlines flights
Qantas AirwaysCheapest$1,462Average$1,885FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights
Air CanadaCheapest$1,479Average$1,774FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Virgin AustraliaCheapest$1,737Average$2,097FlexibilityNo cancel feeOn-time80%
Search Virgin Australia flights

Fly with Cheapflights

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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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