Find flights
When to book
FAQs

Cheap flights from Seattle to Adelaide from $1,068

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 17/5. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — ADL
28 Feb — 7 Mar1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Seattle to Adelaide

Enter your travel dates to find the best prices.

Cheapest flights from Seattle to Adelaide
Explore the most affordable flight options available from Seattle to Adelaide. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 January 2026.

Wed 1/420:00
SEA
-
ADL
2 stops28h 20m
Multiple Airlines
Thu 9/419:00
ADL
-
SEA
2 stops31h 03m
Multiple Airlines
Deal found 28/1$1,306
Thu 2/420:00
SEA
-
ADL
2 stops24h 25m
Multiple Airlines
Thu 9/420:00
ADL
-
SEA
2 stops30h 03m
Multiple Airlines
Deal found 28/1$1,344
Sun 14/615:00
SEA
-
ADL
2 stops28h 20m
Air Canada
Sat 25/718:55
ADL
-
SEA
2 stops30h 52m
Air Canada
Deal found 27/1$1,473
Sun 14/615:00
SEA
-
ADL
2 stops30h 25m
Multiple Airlines
Sat 25/716:30
ADL
-
SEA
3 stops33h 17m
Multiple Airlines
Deal found 27/1$1,499
Thu 2/420:00
SEA
-
ADL
2 stops24h 25m
Multiple Airlines
Mon 20/421:20
ADL
-
SEA
2 stops28h 43m
Multiple Airlines
Deal found 27/1$1,511
Sat 14/319:05
SEA
-
ADL
2 stops29h 40m
Qantas Airways
Sat 21/319:00
ADL
-
SEA
2 stops43h 12m
Qantas Airways
Deal found 28/1$1,523
Mon 3/821:09
SEA
-
ADL
2 stops45h 56m
Multiple Airlines
Sat 22/812:35
ADL
-
SEA
2 stops24h 00m
Multiple Airlines
Deal found 26/1$1,542
Wed 30/921:07
SEA
-
ADL
2 stops45h 58m
Multiple Airlines
Sat 17/1013:35
ADL
-
SEA
2 stops21h 52m
Multiple Airlines
Deal found 28/1$1,548
Thu 9/415:40
SEA
-
ADL
2 stops29h 45m
Multiple Airlines
Thu 16/421:20
ADL
-
SEA
2 stops34h 13m
Multiple Airlines
Deal found 27/1$1,573
Mon 9/217:10
SEA
-
ADL
1 stop21h 50m
United Airlines
Mon 16/214:55
ADL
-
SEA
1 stop24h 36m
United Airlines
Deal found 26/1$1,595

Find flight deals from Seattle to Adelaide

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Adelaide (ADL). 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 29 January 2026.

Round-trip from

$1,306

One-way from

$1,068
Air Canada
  • Air Canada
  • 1/4-9/4
  • 4 total stops
  • 59h 23m total
  • Seattle to Adelaide
Search Deals
Qantas Airways
  • Qantas Airways
  • 17/5
  • 2 total stops
  • 23h 55m total
  • Seattle to Adelaide
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Seattle to Adelaide 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 29 January 2026.
Use the filters below to find and compare flights from Seattle to Adelaide that are best for you.

Fly from

Seattle

Fly to

Adelaide

Route

Depart

Return

Price

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Wed 1/4

20:00-17:50

2 stops28h 20m

Adelaide

Thu 9/4

19:00-09:33

2 stops31h 03m

$1,306

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Sun 14/6

15:00-11:50

2 stops28h 20m

Adelaide

Sat 25/7

18:55-09:17

2 stops30h 52m

$1,473

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Sun 14/6

15:00-13:55

2 stops30h 25m

Adelaide

Sat 25/7

16:30-09:17

3 stops33h 17m

$1,499

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Thu 2/4

20:00-13:55

2 stops24h 25m

Adelaide

Mon 20/4

21:20-09:33

2 stops28h 43m

$1,511

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Mon 9/2

17:10-09:30

1 stop21h 50m

Adelaide

Mon 16/2

14:55-23:30

1 stop27h 05m

$1,598

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Mon 6/7

08:00-22:35

2 stops22h 05m

Adelaide

Fri 24/7

06:25-23:59

2 stops34h 04m

$1,729

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Sat 14/3

12:55-08:30

2 stops26h 05m

Adelaide

Sat 21/3

14:15-18:30

1 stop21h 45m

$1,739

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Sun 17/5

18:40-11:05

2 stops23h 55m

$1,068

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Sun 17/5

18:49-09:25

3 stops46h 06m

$1,631

SeattleAdelaide

SEA - ADL

SEAADL

Seattle/Tacoma Intl

Sun 17/5

16:30-15:50

1 stop30h 50m

$2,133

Flights are sorted by cheapest return flights first.

Deals found on 27/1

Best time to book a flight from Seattle to Adelaide

Have a flexible travel schedule? Discover the best time to fly to Adelaide from Seattle 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.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Adelaide. 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 Seattle to Adelaide?

    Air Canada and United Airlines can get you from Seattle to Adelaide in just under 21h 50m. Your travel time can differ by up to 6h 30m. There are 13409 km between Seattle and Adelaide. Both multi-stop and direct flights can be found to your destination and back.

  • Can I find deals for flights from Seattle to Adelaide that include hotel bookings?

    Yes. In addition to deals on Seattle to Adelaide flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Adelaide?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Adelaide.

  • Can I find deals for business class flights from Seattle to Adelaide?

    Yes. Cheapflights offers flight deals from Seattle to Adelaide 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 Adelaide?

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

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.

Other flights to Adelaide

Explore flights to Adelaide departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 29 January 2026.
Avalon to Adelaide flights
Hobart to Adelaide flights
Melbourne to Adelaide flights
Coolangatta to Adelaide flights
Brisbane to Adelaide flights
Sydney to Adelaide flights
Adelaide to Melbourne Avalon Airport flights
Adelaide to Melbourne Airport flights
Adelaide to Launceston flights
Adelaide to Hobart flights
Adelaide to Coolangatta flights
Adelaide to Sydney flights
Adelaide to Melbourne Airport flights
Adelaide to Maroochydore flights
Adelaide to Denpasar flights
Adelaide to Brisbane flights
Adelaide to Coolangatta flights
Adelaide to Maroochydore flights
Adelaide to Hobart flights
Adelaide to Darwin flights
Adelaide to Cairns flights
Adelaide to Perth flights
Adelaide to Port Lincoln flights
Adelaide to Alice Springs 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 Seattle to Adelaide?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Adelaide from Seattle today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from Seattle to Adelaide?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Seattle to Adelaide.

Can Cheapflights find flights from Seattle to Adelaide with no change fees?

Yes, we can. To see specific flights from Seattle to Adelaide with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Seattle to Adelaide become cheaper?

Yes, Cheapflights offers price alerts on Seattle to Adelaide flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the 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.