$623+ Cheap flights from Seattle (SEA) to Adelaide (ADL)
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 5/17. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — ADL
Mar 31 — Apr 71
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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Best
Last-minute
One-way
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 March 1, 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 March 1, 2026.
This Air Canada deal was found by Cheapflights users on 2/28. 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.
Tue 4/148:00 pm
SEA
- ADL
2 stops22h 45m
Multiple Airlines
Tue 4/216:55 pm
ADL
- SEA
2 stops40h 55m
Multiple Airlines
Deal found 2/28![Multiple Airlines logo]()
$896
This Gotogate deal was found by Cheapflights users on 2/25. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/118:00 pm
SEA
- ADL
2 stops22h 45m
Multiple Airlines
Sat 4/186:55 pm
ADL
- SEA
2 stops44h 25m
Multiple Airlines
Deal found 2/25![Multiple Airlines logo]()
$1,087
This Air Canada deal was found by Cheapflights users on 2/27. 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 Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/67:20 pm
SEA
- ADL
2 stops26h 05m
Multiple Airlines
Fri 7/247:35 pm
ADL
- SEA
2 stops30h 12m
Multiple Airlines
Deal found 2/27![Multiple Airlines logo]()
$1,141
This Expedia deal was found by Cheapflights users on 2/28. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/15:50 pm
SEA
- ADL
2 stops43h 55m
Multiple Airlines
Sun 3/86:00 am
ADL
- SEA
2 stops40h 53m
Multiple Airlines
Deal found 2/28![Multiple Airlines logo]()
$1,240
This Jetabroad deal was found by Cheapflights users on 2/28. 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 Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/143:40 pm
SEA
- ADL
2 stops26h 45m
Air New Zealand
Tue 4/217:50 am
ADL
- SEA
3 stops27h 15m
Air New Zealand
Deal found 2/28![Air New Zealand logo]()
$1,312
This Jetabroad deal was found by Cheapflights users on 2/25. 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 Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/113:40 pm
SEA
- ADL
2 stops26h 45m
Air New Zealand
Sat 4/187:45 pm
ADL
- SEA
3 stops44h 12m
Air New Zealand
Deal found 2/25![Air New Zealand logo]()
$1,436
This Qantas Airways deal was found by Cheapflights users on 2/27. 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 Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/712:50 pm
SEA
- ADL
2 stops28h 30m
Qantas Airways
Wed 3/117:00 pm
ADL
- SEA
2 stops41h 23m
Qantas Airways
Deal found 2/27![Qantas Airways logo]()
$1,444
This United Airlines deal was found by Cheapflights users on 2/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/712:36 pm
SEA
- ADL
1 stop26h 24m
United Airlines
Wed 3/1112:45 pm
ADL
- SEA
2 stops40h 25m
United Airlines
Deal found 2/26![United Airlines logo]()
$1,464
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 March 1, 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 March 1, 2026.
This Gotogate deal was found by Cheapflights users on 2/25. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/118:00 pm
SEA
- ADL
2 stops22h 45m
Multiple Airlines
Sat 4/186:55 pm
ADL
- SEA
2 stops44h 25m
Multiple Airlines
Deal found 2/25![Multiple Airlines logo]()
$1,087
This Jetabroad deal was found by Cheapflights users on 2/28. 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 Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/143:40 pm
SEA
- ADL
2 stops26h 45m
Air New Zealand
Tue 4/217:50 am
ADL
- SEA
3 stops27h 15m
Air New Zealand
Deal found 2/28![Air New Zealand logo]()
$1,312
This oojo deal was found by Cheapflights users on 2/25. 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.
Sat 4/114:25 pm
SEA
- ADL
2 stops50h 35m
Qatar Airways
Sat 4/189:40 pm
ADL
- SEA
1 stop31h 35m
Qatar Airways
Deal found 2/25![Qatar Airways logo]()
$1,639
This Air Canada deal was found by Cheapflights users on 2/27. 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 Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/67:20 pm
SEA
- ADL
2 stops26h 05m
Multiple Airlines
Fri 7/247:35 pm
ADL
- SEA
2 stops30h 12m
Multiple Airlines
Deal found 2/27![Multiple Airlines logo]()
$1,141
This Jetabroad deal was found by Cheapflights users on 2/25. 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 Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/113:40 pm
SEA
- ADL
2 stops26h 45m
Air New Zealand
Sat 4/187:45 pm
ADL
- SEA
3 stops44h 12m
Air New Zealand
Deal found 2/25![Air New Zealand logo]()
$1,436
This KAYAK deal was found by Cheapflights users on 2/28. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/66:30 am
SEA
- ADL
2 stops35h 20m
Air New Zealand
Fri 7/246:00 am
ADL
- SEA
3 stops32h 29m
Air New Zealand
Deal found 2/28![Air New Zealand logo]()
$1,530
Last-minute flights from Seattle to AdelaideDiscover last-minute flight deals from Seattle to Adelaide. Data last updated March 1, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Adelaide. Data last updated March 1, 2026 and is based on user searches.
This Expedia deal was found by Cheapflights users on 2/28. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/15:50 pm
SEA
- ADL
2 stops43h 55m
Multiple Airlines
Sun 3/86:00 am
ADL
- SEA
2 stops40h 53m
Multiple Airlines
Deal found 2/28![Multiple Airlines logo]()
$1,240
This Jetabroad deal was found by Cheapflights users on 2/28. 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 Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/17:29 pm
SEA
- ADL
3 stops28h 16m
Air New Zealand
Sun 3/86:05 am
ADL
- SEA
3 stops30h 41m
Air New Zealand
Deal found 2/28![Air New Zealand logo]()
$2,264
This Qantas Airways deal was found by Cheapflights users on 2/27. 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 Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/712:50 pm
SEA
- ADL
2 stops28h 30m
Qantas Airways
Wed 3/117:00 pm
ADL
- SEA
2 stops41h 23m
Qantas Airways
Deal found 2/27![Qantas Airways logo]()
$1,444
This United Airlines deal was found by Cheapflights users on 2/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/712:36 pm
SEA
- ADL
1 stop26h 24m
United Airlines
Wed 3/1112:45 pm
ADL
- SEA
2 stops40h 25m
United Airlines
Deal found 2/26![United Airlines logo]()
$1,464
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 March 1, 2026.
Search for one-way flight options from Seattle to Adelaide. Find affordable one-way fares based on user searches. Data last updated March 1, 2026.
This Air Canada deal was found by Cheapflights users on 2/28. 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.
Sun 5/177:20 pm
SEA
- ADL
2 stops24h 00m
Air Canada
Deal found 2/28![Air Canada logo]()
$623
This Cathay Pacific deal was found by Cheapflights users on 2/27. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/178:30 pm
SEA
- ADL
3 stops43h 05m
Multiple Airlines
Deal found 2/27![Multiple Airlines logo]()
$1,062
This Qatar Airways deal was found by Cheapflights users on 2/28. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/174:30 pm
SEA
- ADL
1 stop30h 50m
Qatar Airways
Deal found 2/28![Qatar Airways logo]()
$1,485
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 March 1, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $896 (Air Canada) |
One-way from | $623 (Air Canada) |
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 2,558,603 searches. Data last updated March 1, 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
SeattleAdelaide
SEA - ADL
SEAADL
Seattle/Tacoma Intl
Sat 4/11
8:00 pm-11:15 am
2 stops22h 45m
Adelaide
Sat 4/18
6:55 pm-10:50 pm
2 stops44h 25m
$1,087
SeattleAdelaide
SEA - ADL
SEAADL
Seattle/Tacoma Intl
Mon 7/6
7:20 pm-1:55 pm
2 stops26h 05m
Adelaide
Fri 7/24
7:35 pm-9:17 am
2 stops30h 12m
$1,141
SeattleAdelaide
SEA - ADL
SEAADL
Seattle/Tacoma Intl
Tue 4/14
3:40 pm-10:55 am
2 stops26h 45m
Adelaide
Tue 4/21
7:50 am-6:35 pm
3 stops27h 15m
$1,312
SeattleAdelaide
SEA - ADL
SEAADL
Seattle/Tacoma Intl
Sat 4/11
3:40 pm-10:55 am
2 stops26h 45m
Adelaide
Sat 4/18
7:45 pm-11:27 pm
3 stops44h 12m
$1,436
SeattleAdelaide
SEA - ADL
SEAADL
Seattle/Tacoma Intl
Mon 7/6
6:30 am-10:20 am
2 stops35h 20m
Adelaide
Fri 7/24
6:00 am-9:59 pm
3 stops32h 29m
$1,530
SeattleAdelaide
SEA - ADL
SEAADL
Seattle/Tacoma Intl
Sat 4/11
4:25 pm-11:30 am
2 stops50h 35m
Adelaide
Sat 4/18
9:40 pm-12:45 pm
1 stop31h 35m
$1,639
SeattleAdelaide
SEA - ADL
SEAADL
Seattle/Tacoma Intl
Sun 5/17
8:30 pm-8:05 am
3 stops43h 05m
$1,062
SeattleAdelaide
SEA - ADL
SEAADL
Seattle/Tacoma Intl
Sun 5/17
4:30 pm-3:50 pm
1 stop30h 50m
$1,485
Sorted 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 March.
| 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Adelaide flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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.
Reviews of airlines servicing Adelaide
Get insights into the airlines that provide service to Adelaide. 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 Adelaide. Reviews last updated March 1, 2026.
Read through reviews of airlines operating flights from Seattle to Adelaide, such as Qantas Airways. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Food
7.0
Overall
7.5
Comfort
7.4
Crew
8.1
Entertainment
7.2
Boarding
7.7
Reviews
1 / 20
2.0
MediocreMidhat,Feb 2026
WYA - ADL
Food
7.0
Overall
7.5
Comfort
7.4
Crew
8.1
Entertainment
7.2
Boarding
7.7
Reviews
1 / 20
2.0
MediocreMidhat,Feb 2026
WYA - ADL
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.
Traveling to a place near Adelaide?
Book flights to Adelaide if you plan to visit one of these locationsGlenelg
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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 March 1, 2026.
Alternative routes for Seattle to Adelaide
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Adelaide by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Seattle to Adelaide by cabin class
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Seattle and Adelaide flights
Browse other Seattle and Adelaide flight options. Last updated on March 1, 2026.
Other flights from Seattle
Browse through other flights departing from Seattle. Flights are based on user searches made on Cheapflights and were last updated on March 1, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top airline flying from Seattle to Adelaide
Discover the top airline that operate flights from Seattle to Adelaide. 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 2,558,603 searches. Data last updated March 1, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$1,088 | Average$1,211 | FlexibilityNo cancel fee | On-time74% |