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Cheap flights from Adelaide to Seattle from $847

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 7/3. Fares are subject to change and may not be available on all flights or dates of travel.
ADL — SEA
17 Δεκ — 24 Δεκ1
1 adult
1 adult, Economy, 0 bags

Find flight deals from Adelaide to Seattle

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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 17 Νοεμβρίου 2025.

Τετ 31/1214:55ADL - SEA
2 stops24h 52mUnited Airlines
Τετ 7/115:30SEA - ADL
2 stops47h 30mUnited Airlines
Deal found 16/11$2,298
Τρι 30/1206:10ADL - SEA
2 stops31h 05mVirgin Australia
Τρι 6/109:00SEA - ADL
2 stops41h 40mVirgin Australia
Deal found 14/11$2,666
Δευ 15/1207:50ADL - SEA
2 stops25h 04mQantas Airways
Τρι 20/115:39SEA - ADL
2 stops27h 36mQantas Airways
Deal found 17/11$2,726
Δευ 15/1214:55ADL - SEA
1 stop24h 35mUnited Airlines
Σαβ 17/112:35SEA - ADL
1 stop26h 25mUnited Airlines
Deal found 17/11$2,856
Τρι 16/1207:50ADL - SEA
2 stops25h 04mQantas Airways
Παρ 16/106:00SEA - ADL
2 stops37h 10mQantas Airways
Deal found 17/11$2,913
Δευ 15/1213:15ADL - SEA
2 stops23h 35mMultiple Airlines
Τρι 20/108:06SEA - ADL
2 stops33h 39mMultiple Airlines
Deal found 15/11$2,925
Τρι 30/1219:55ADL - SEA
2 stops32h 06mMultiple Airlines
Τρι 6/116:05SEA - ADL
1 stop30h 30mMultiple Airlines
Deal found 14/11$3,043
Τρι 30/1206:00ADL - SEA
3 stops30h 36mUnited Airlines
Τρι 6/109:25SEA - ADL
2 stops34h 15mUnited Airlines
Deal found 14/11$3,093
Δευ 15/1214:55ADL - SEA
1 stop24h 35mUnited Airlines
Τρι 20/109:00SEA - ADL
2 stops34h 40mUnited Airlines
Deal found 17/11$3,111
Τετ 17/1214:55ADL - SEA
2 stops37h 31mUnited Airlines
Τρι 20/117:10SEA - ADL
2 stops26h 30mUnited Airlines
Deal found 17/11$3,118

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 17 Νοεμβρίου 2025.

Round-trip from

$1,643

One-way from

$847

Popular in

April

Cheapest in

November

Average price

$1,459
7/3-23/3
  • 7/3-23/3
  • 3 total stops
  • 78h 50m total
  • Adelaide to Seattle
Search Deals
7/3
  • 7/3
  • 2 total stops
  • 34h 26m total
  • Adelaide to Seattle
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($348 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($103 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2025
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 17 Νοεμβρίου 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

Τετ 11/3

07:05-20:58

2 stops31h 23m

Seattle/Tacoma Intl

Κυρ 15/3

16:50-09:50

2 stops23h 30m

$1,727

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Σαβ 7/3

09:00-16:14

3 stops25h 44m

Seattle/Tacoma Intl

Δευ 23/3

15:40-10:55

2 stops25h 45m

$1,915

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Παρ 8/5

11:55-01:14

2 stops29h 49m

Seattle/Tacoma Intl

Δευ 18/5

14:55-10:55

2 stops27h 30m

$1,923

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Παρ 8/5

18:30-19:30

2 stops41h 30m

Seattle/Tacoma Intl

Κυρ 17/5

01:10-13:35

2 stops43h 55m

$2,137

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Τετ 24/12

14:55-21:17

2 stops24h 52m

Seattle/Tacoma Intl

Δευ 5/1

08:57-09:30

2 stops30h 03m

$2,249

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Τετ 31/12

14:55-16:52

1 stop20h 27m

Seattle/Tacoma Intl

Τετ 7/1

12:57-09:30

2 stops50h 03m

$2,298

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Τετ 11/3

13:55-16:14

1 stop19h 49m

Seattle/Tacoma Intl

Κυρ 15/3

19:10-08:30

2 stops43h 50m

$2,371

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Τετ 24/12

14:55-18:45

1 stop22h 20m

Seattle/Tacoma Intl

Σαβ 10/1

12:35-09:30

1 stop26h 25m

$2,467

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Σαβ 7/3

06:10-22:06

2 stops34h 26m

$847

AdelaideSeattle

ADL - SEA

ADLSEA

Adelaide

Σαβ 7/3

18:35-07:10

1 stop31h 05m

$1,164

Flights are sorted by cheapest return flights first.

Deals found on 16/11

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 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 17 Νοεμβρίου 2025.

Unlike at midday, when flights are generally more expensive, you can save up to 25% on flights from Adelaide to Seattle by exploring options for tickets in the afternoon.

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 17 Νοεμβρίου 2025.
See what other customers who have flown with Singapore Airlines, Qantas Airways, andVirgin Australia 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.
Singapore Airlines
8.1
Very Good
1,404 reviews
Check prices

Crew

8.6

Overall

8.1

Boarding

8.3

Entertainment

8.0

Comfort

8.0

Food

7.8

Reviews

1 / 20
10.0
Excellent

Juliet,Oct 2025

PUS - SIN

Very kind staff to arrange my luggage and really appreciate all help.
Singapore Airlines
8.1
Very Good
1,404 reviews
Singapore Airlines
8.1
Very Good
1,404 reviews
Check prices

Crew

8.6

Overall

8.1

Boarding

8.3

Entertainment

8.0

Comfort

8.0

Food

7.8

Reviews

1 / 20
10.0
Excellent

Juliet,Oct 2025

PUS - SIN

Very kind staff to arrange my luggage and really appreciate all help.
Qantas Airways
7.6
Good
938 reviews
Singapore Airlines
8.1
Very Good
1,404 reviews
Check prices

Crew

8.6

Overall

8.1

Boarding

8.3

Entertainment

8.0

Comfort

8.0

Food

7.8

Reviews

1 / 20
10.0
Excellent

Juliet,Oct 2025

PUS - SIN

Very kind staff to arrange my luggage and really appreciate all help.
Virgin Australia
7.6
Good
424 reviews
Singapore Airlines
8.1
Very Good
1,404 reviews
Check prices

Crew

8.6

Overall

8.1

Boarding

8.3

Entertainment

8.0

Comfort

8.0

Food

7.8

Reviews

1 / 20
10.0
Excellent

Juliet,Oct 2025

PUS - SIN

Very kind staff to arrange my luggage and really appreciate all help.
United Airlines
7.4
Good
9,014 reviews
Singapore Airlines
8.1
Very Good
1,404 reviews
Check prices

Crew

8.6

Overall

8.1

Boarding

8.3

Entertainment

8.0

Comfort

8.0

Food

7.8

Reviews

1 / 20
10.0
Excellent

Juliet,Oct 2025

PUS - SIN

Very kind staff to arrange my luggage and really appreciate all help.
Air Canada
7.1
Good
10,458 reviews
Singapore Airlines
8.1
Very Good
1,404 reviews
Check prices

Crew

8.6

Overall

8.1

Boarding

8.3

Entertainment

8.0

Comfort

8.0

Food

7.8

Reviews

1 / 20
10.0
Excellent

Juliet,Oct 2025

PUS - SIN

Very kind staff to arrange my luggage and really appreciate all help.

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?

    Qantas Airways and Air New Zealand can get you from Adelaide to Seattle in just under 25h 44m. Your travel time can differ by up to 5h 39m. There are 13409 km between Adelaide and Seattle. This flight may include one or multiple stops.

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

    According to our current data, Air New Zealand ($938), Qantas Airways ($1,371), and Singapore Airlines ($1,422) offers the cheapest pricing from Adelaide to Seattle. These flights start at 49% 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
Ocean Shores

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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 6 airlines flying from Adelaide to Seattle

Discover the top 6 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 17 Νοεμβρίου 2025.
AirlineCheapestAverageFlexibilityOn-time
Air New ZealandCheapest$938Average$1,550FlexibilityNo cancel feeOn-time78%
Search Air New Zealand flights
Qantas AirwaysCheapest$1,371Average$1,814FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights
Singapore AirlinesCheapest$1,422Average$1,672FlexibilityNo cancel feeOn-time81%
Search Singapore Airlines flights
Air CanadaCheapest$1,474Average$1,641FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Virgin AustraliaCheapest$1,741Average$2,004FlexibilityNo cancel feeOn-time80%
Search Virgin Australia flights
United AirlinesCheapest$1,743Average$2,049FlexibilityNo cancel feeOn-time69%
Search United Airlines 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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