$663+ Cheap flights from Seattle (SEA) to Adelaide (ADL)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/12. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — ADL
Oct 29 — Nov 51
Round-trip
1 adult, Economy
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Find cheap flights from Seattle to Adelaide with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Seattle to Adelaide
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Cheapest flights from Seattle to AdelaideExplore 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 September 29, 2026.
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 September 29, 2026.
This Air New Zealand deal was found by Cheapflights users on 9/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air New Zealand is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/113:48 pm -
2 stops24h 37m
Wed 11/1812:05 pm -
2 stops24h 47m
Deal found 9/27![Multiple Airlines logo]()
$1,218
This Air Canada deal was found by Cheapflights users on 9/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/127:05 pm -
2 stops24h 30m
Thu 11/196:10 am -
2 stops21h 52m
Deal found 9/28![Multiple Airlines logo]()
$1,346
This Booking.com deal was found by Cheapflights users on 9/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1110:25 am -
1 stop29h 35m
Wed 11/1812:00 pm -
1 stop39h 15m
Deal found 9/27![Cathay Pacific logo]()
$1,350
This American Airlines deal was found by Cheapflights users on 9/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/151:37 pm -
2 stops26h 18m
Thu 11/126:25 am -
2 stops25h 05m
Deal found 9/28![American Airlines logo]()
$1,386
This Air Canada deal was found by Cheapflights users on 9/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/318:40 am -
2 stops44h 20m
Wed 11/46:10 am -
2 stops21h 52m
Deal found 9/28![Air Canada logo]()
$1,492
This oojo deal was found by Cheapflights users on 9/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/313:40 pm -
2 stops25h 45m
Fri 1/152:30 pm -
2 stops26h 10m
Deal found 9/24![Qantas Airways logo]()
$1,495
This United Airlines deal was found by Cheapflights users on 9/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/309:05 am -
2 stops36h 45m
Thu 12/317:15 am -
2 stops23h 37m
Deal found 9/25![United Airlines logo]()
$1,515
Best flights from Seattle to AdelaideDiscover carefully curated flight deals from Seattle to Adelaide that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 29, 2026.
Discover carefully curated flight deals from Seattle to Adelaide that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 29, 2026.
This Air New Zealand deal was found by Cheapflights users on 9/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air New Zealand is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/113:48 pm -
2 stops24h 37m
Wed 11/1812:05 pm -
2 stops24h 47m
Deal found 9/27![Multiple Airlines logo]()
$1,218
This Justfly.com deal was found by Cheapflights users on 9/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/123:15 pm -
2 stops25h 10m
Sun 2/2112:05 pm -
2 stops24h 47m
Deal found 9/25![Air New Zealand logo]()
$1,267
This Air Canada deal was found by Cheapflights users on 9/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/318:40 am -
2 stops44h 20m
Wed 11/46:10 am -
2 stops21h 52m
Deal found 9/28![Air Canada logo]()
$1,492
This oojo deal was found by Cheapflights users on 9/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/148:40 am -
1 stop29h 40m
Sat 2/206:35 pm -
1 stop31h 00m
Deal found 9/25![Singapore Airlines logo]()
$1,681
This oojo deal was found by Cheapflights users on 9/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/313:50 pm -
1 stop30h 45m
Fri 1/157:50 pm -
2 stops34h 20m
Deal found 9/24![Qatar Airways logo]()
$1,739
This Cathay Pacific deal was found by Cheapflights users on 9/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/124:59 pm -
2 stops47h 01m
Thu 11/1910:10 am -
3 stops42h 15m
Deal found 9/28![Multiple Airlines logo]()
$1,543
This Cathay Pacific deal was found by Cheapflights users on 9/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/124:45 pm -
3 stops43h 50m
Sun 2/2112:00 pm -
2 stops42h 00m
Deal found 9/25![Multiple Airlines logo]()
$1,612
This Qatar Airways deal was found by Cheapflights users on 9/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/314:50 pm -
1 stop29h 35m
Wed 11/410:00 pm -
1 stop32h 10m
Deal found 9/27![Qatar Airways logo]()
$2,241
Last-minute flights from Seattle to AdelaideDiscover last-minute flight deals from Seattle to Adelaide. Data last updated September 29, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Adelaide. Data last updated September 29, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 9/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/151:37 pm -
2 stops26h 18m
Thu 11/126:25 am -
2 stops25h 05m
Deal found 9/28![American Airlines logo]()
$1,386
This Booking.com deal was found by Cheapflights users on 9/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/155:04 pm -
3 stops36h 01m
Thu 11/122:30 pm -
2 stops34h 08m
Deal found 9/28![Multiple Airlines logo]()
$1,883
This oojo deal was found by Cheapflights users on 9/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/159:55 am -
1 stop61h 55m
Thu 11/126:35 pm -
1 stop31h 00m
Deal found 9/28![Singapore Airlines logo]()
$2,032
This Air Canada deal was found by Cheapflights users on 9/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/318:40 am -
2 stops44h 20m
Wed 11/46:10 am -
2 stops21h 52m
Deal found 9/28![Air Canada logo]()
$1,492
This Qatar Airways deal was found by Cheapflights users on 9/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/314:50 pm -
1 stop29h 35m
Wed 11/410:00 pm -
1 stop32h 10m
Deal found 9/27![Qatar Airways logo]()
$2,241
This Emirates deal was found by Cheapflights users on 9/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Emirates is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/315:05 pm -
1 stop34h 15m
Wed 11/410:40 pm -
1 stop32h 25m
Deal found 9/28![Emirates logo]()
$2,709
One-way flights from Seattle to AdelaideSearch for one-way flight options from Seattle to Adelaide. Find affordable one-way fares based on user searches. Data last updated September 29, 2026.
Search for one-way flight options from Seattle to Adelaide. Find affordable one-way fares based on user searches. Data last updated September 29, 2026.
This United Airlines deal was found by Cheapflights users on 9/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/124:35 pm -
2 stops27h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/28![United Airlines logo]()
$663
This Kiwi.com deal was found by Cheapflights users on 9/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1211:43 am -
3 stops36h 47m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/28![Multiple Airlines logo]()
$697
This oojo deal was found by Cheapflights users on 9/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/313:40 pm -
2 stops25h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/26![Qantas Airways logo]()
$718
This Kiwi.com deal was found by Cheapflights users on 9/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/129:16 pm -
3 stops42h 54m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/28![Multiple Airlines logo]()
$819
This Qantas Airways deal was found by Cheapflights users on 9/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/313:40 pm -
3 stops27h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/26![Multiple Airlines logo]()
$835
This Kiwi.com deal was found by Cheapflights users on 9/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/81:15 am -
3 stops36h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/27![Multiple Airlines logo]()
$921
This Kiwi.com deal was found by Cheapflights users on 9/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/811:10 pm -
2 stops39h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/27![Multiple Airlines logo]()
$943
This SmartFares deal was found by Cheapflights users on 9/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/313:50 pm -
1 stop30h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/26![Qatar Airways logo]()
$1,003
This Trip.com deal was found by Cheapflights users on 9/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/94:25 pm -
1 stop30h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/27![Qatar Airways logo]()
$1,521
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 September 29, 2026.
Most accurate provider | Ovago 3 stars |
|---|---|
Most trusted provider | Ovago 3 stars |
Round-trip from | $1,218 (Air New Zealand) |
One-way from | $663 (United Airlines) |
Cheapflights Fare Finder
Customize 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 7,457,451 searches. Data last updated September 29, 2026.
Use the filters below to find and compare flights from Seattle to Adelaide that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
SeattleAdelaide
SEA Seattle/Tacoma Intl - ADL Adelaide
SEAADL
Seattle/Tacoma Intl
Mon 10/12
4:35 pm-1:45 pm
2 stops27h 40m
Adelaide
Wed 12/31
12:00 am-6:30 am
Nonstop0h 00m
$663
SeattleAdelaide
SEA Seattle/Tacoma Intl - ADL Adelaide
SEAADL
Seattle/Tacoma Intl
Thu 11/12
4:59 pm-10:30 am
2 stops47h 01m
Adelaide
Wed 12/31
12:00 am-6:30 am
Nonstop0h 00m
$698
SeattleAdelaide
SEA Seattle/Tacoma Intl - ADL Adelaide
SEAADL
Seattle/Tacoma Intl
Mon 10/12
9:16 pm-9:40 am
3 stops42h 54m
Adelaide
Wed 12/31
12:00 am-6:30 am
Nonstop0h 00m
$819
Quickest round-trip
SeattleAdelaide
SEA Seattle/Tacoma Intl - ADL Adelaide
SEAADL
Seattle/Tacoma Intl
Thu 12/31
3:40 pm-1:30 pm
3 stops27h 20m
Adelaide
Wed 12/31
12:00 am-6:30 am
Nonstop0h 00m
$835
SeattleAdelaide
SEA Seattle/Tacoma Intl - ADL Adelaide
SEAADL
Seattle/Tacoma Intl
Thu 10/8
1:15 am-7:05 am
3 stops36h 20m
Adelaide
Wed 12/31
12:00 am-6:30 am
Nonstop0h 00m
$921
SeattleAdelaide
SEA Seattle/Tacoma Intl - ADL Adelaide
SEAADL
Seattle/Tacoma Intl
Thu 10/8
11:10 pm-8:00 am
2 stops39h 20m
Adelaide
Wed 12/31
12:00 am-6:30 am
Nonstop0h 00m
$943
SeattleAdelaide
SEA Seattle/Tacoma Intl - ADL Adelaide
SEAADL
Seattle/Tacoma Intl
Thu 12/31
3:50 pm-5:05 pm
1 stop30h 45m
Adelaide
Wed 12/31
12:00 am-6:30 am
Nonstop0h 00m
$1,003
SeattleAdelaide
SEA Seattle/Tacoma Intl - ADL Adelaide
SEAADL
Seattle/Tacoma Intl
Wed 11/11
3:48 pm-10:55 am
2 stops24h 37m
Adelaide
Wed 11/18
12:05 pm-6:22 pm
2 stops24h 47m
$1,218
SeattleAdelaide
SEA Seattle/Tacoma Intl - ADL Adelaide
SEAADL
Seattle/Tacoma Intl
Fri 2/12
3:15 pm-10:55 am
2 stops25h 10m
Adelaide
Sun 2/21
12:05 pm-6:22 pm
2 stops24h 47m
$1,267
SeattleAdelaide
SEA Seattle/Tacoma Intl - ADL Adelaide
SEAADL
Seattle/Tacoma Intl
Sat 10/31
8:40 am-10:30 pm
2 stops44h 20m
Adelaide
Wed 11/4
6:10 am-9:32 am
2 stops21h 52m
$1,492
Showing 1-10 of 17 resultsSorted by cheapest first
Compare providers for flights from Seattle to Adelaide
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Adelaide in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Seattle-Adelaide flights, users find the pricing of Ovago to be most consistent on Cheapflights vs. Ovago Users can find the same prices on Seattle-Adelaide flight deals on Cheapflights vs. Ovago >95% of the time. Price accuracy is based on data collected from Seattle-Adelaide flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Seattle-Adelaide flights, Cheapflights users trust Ovago the most. Ovago has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Adelaide flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
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.
SEA-ADL
Estimated round-trip 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.
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