$714+ 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
Jun 10 — Jun 171
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 May 11, 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 May 11, 2026.
This SmartFares deal was found by Cheapflights users on 5/6. 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 6/48:50 pm
SEA
- ADL
2 stops33h 15m
Multiple Airlines
Thu 6/117:10 pm
ADL
- SEA
2 stops45h 19m
Multiple Airlines
Deal found 5/6![Multiple Airlines logo]()
$1,298
This Ovago deal was found by Cheapflights users on 5/9. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/95:06 pm
SEA
- ADL
2 stops25h 59m
Multiple Airlines
Sat 5/1612:35 pm
ADL
- SEA
2 stops25h 39m
Multiple Airlines
Deal found 5/9![Multiple Airlines logo]()
$1,406
This Ovago deal was found by Cheapflights users on 5/9. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/68:00 am
SEA
- ADL
2 stops22h 05m
Multiple Airlines
Fri 7/243:00 pm
ADL
- SEA
2 stops25h 29m
Multiple Airlines
Deal found 5/9![Multiple Airlines logo]()
$1,472
This Air Canada deal was found by Cheapflights users on 5/7. 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 11/1210:35 am
SEA
- ADL
2 stops35h 05m
Air Canada
Mon 11/166:10 am
ADL
- SEA
2 stops22h 11m
Air Canada
Deal found 5/7![Air Canada logo]()
$1,484
This SmartFares deal was found by Cheapflights users on 5/9. 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.
Tue 6/2310:55 am
SEA
- ADL
2 stops43h 10m
Multiple Airlines
Tue 6/302:25 pm
ADL
- SEA
2 stops23h 39m
Multiple Airlines
Deal found 5/9![Multiple Airlines logo]()
$1,560
This oojo deal was found by Cheapflights users on 5/9. 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.
Mon 6/2210:45 am
SEA
- ADL
2 stops31h 40m
Air New Zealand
Fri 7/1712:05 pm
ADL
- SEA
2 stops22h 57m
Air New Zealand
Deal found 5/9![Air New Zealand logo]()
$1,588
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 May 11, 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 May 11, 2026.
This SmartFares deal was found by Cheapflights users on 5/6. 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 6/48:50 pm
SEA
- ADL
2 stops33h 15m
Multiple Airlines
Thu 6/117:10 pm
ADL
- SEA
2 stops45h 19m
Multiple Airlines
Deal found 5/6![Multiple Airlines logo]()
$1,298
This United Airlines deal was found by Cheapflights users on 5/6. 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.
Thu 6/41:30 pm
SEA
- ADL
2 stops29h 05m
United Airlines
Thu 6/118:00 pm
ADL
- SEA
3 stops41h 40m
United Airlines
Deal found 5/6![United Airlines logo]()
$1,823
This KAYAK deal was found by Cheapflights users on 5/7. 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 7/66:00 am
SEA
- ADL
2 stops43h 15m
Air New Zealand
Fri 7/246:25 am
ADL
- SEA
3 stops28h 37m
Air New Zealand
Deal found 5/7![Air New Zealand logo]()
$1,939
This Ovago deal was found by Cheapflights users on 5/10. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/68:00 am
SEA
- ADL
2 stops22h 05m
Multiple Airlines
Fri 7/243:00 pm
ADL
- SEA
2 stops25h 29m
Multiple Airlines
Deal found 5/10![Multiple Airlines logo]()
$1,472
This Emirates deal was found by Cheapflights users on 5/7. 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.
Mon 7/65:15 pm
SEA
- ADL
1 stop34h 20m
Emirates
Fri 7/2410:00 pm
ADL
- SEA
1 stop31h 55m
Emirates
Deal found 5/7![Emirates logo]()
$3,178
This Qantas Airways deal was found by Cheapflights users on 5/9. 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 9/55:22 pm
SEA
- ADL
2 stops27h 43m
Qantas Airways
Tue 10/67:45 pm
ADL
- SEA
2 stops34h 01m
Qantas Airways
Deal found 5/9![Qantas Airways logo]()
$3,265
This Singapore Airlines deal was found by Cheapflights users on 5/9. 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 Singapore Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/610:15 am
SEA
- ADL
1 stop28h 40m
Singapore Airlines
Mon 10/56:35 pm
ADL
- SEA
1 stop31h 40m
Singapore Airlines
Deal found 5/9![Singapore Airlines logo]()
$3,334
This Qantas Airways deal was found by Cheapflights users on 5/9. 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.
Wed 9/94:59 pm
SEA
- ADL
2 stops25h 36m
Qantas Airways
Sat 10/36:00 am
ADL
- SEA
2 stops32h 27m
Qantas Airways
Deal found 5/9![Qantas Airways logo]()
$3,467
Last-minute flights from Seattle to AdelaideDiscover last-minute flight deals from Seattle to Adelaide. Data last updated May 11, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Adelaide. Data last updated May 11, 2026 and is based on user searches.
This Ovago deal was found by Cheapflights users on 5/9. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/95:06 pm
SEA
- ADL
2 stops25h 59m
Multiple Airlines
Sat 5/1612:35 pm
ADL
- SEA
2 stops25h 39m
Multiple Airlines
Deal found 5/9![Multiple Airlines logo]()
$1,406
This Cathay Pacific deal was found by Cheapflights users on 5/8. 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.
Sat 5/911:45 am
SEA
- ADL
2 stops31h 40m
Cathay Pacific
Sat 5/166:00 am
ADL
- SEA
3 stops43h 27m
Cathay Pacific
Deal found 5/8![Cathay Pacific logo]()
$2,094
This SmartFares deal was found by Cheapflights users on 5/6. 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 6/48:50 pm
SEA
- ADL
2 stops33h 15m
Multiple Airlines
Thu 6/117:10 pm
ADL
- SEA
2 stops45h 19m
Multiple Airlines
Deal found 5/6![Multiple Airlines logo]()
$1,298
This United Airlines deal was found by Cheapflights users on 5/6. 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.
Thu 6/47:05 pm
SEA
- ADL
2 stops23h 30m
United Airlines
Thu 6/118:00 pm
ADL
- SEA
3 stops41h 40m
United Airlines
Deal found 5/6![United Airlines logo]()
$1,823
This oojo deal was found by Cheapflights users on 5/9. 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.
Mon 6/2210:45 am
SEA
- ADL
2 stops31h 40m
Air New Zealand
Fri 7/1712:05 pm
ADL
- SEA
2 stops22h 57m
Air New Zealand
Deal found 5/9![Air New Zealand logo]()
$1,588
This United Airlines deal was found by Cheapflights users on 5/9. 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 6/221:30 pm
SEA
- ADL
2 stops29h 05m
United Airlines
Fri 7/176:05 am
ADL
- SEA
3 stops31h 35m
United Airlines
Deal found 5/9![United Airlines logo]()
$1,841
This SmartFares deal was found by Cheapflights users on 5/9. 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.
Tue 6/2310:55 am
SEA
- ADL
2 stops43h 10m
Multiple Airlines
Tue 6/302:25 pm
ADL
- SEA
2 stops23h 39m
Multiple Airlines
Deal found 5/9![Multiple Airlines logo]()
$1,560
This Priceline deal was found by Cheapflights users on 5/9. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/234:25 pm
SEA
- ADL
1 stop30h 35m
Qatar Airways
Tue 6/306:20 pm
ADL
- SEA
2 stops34h 35m
Qatar Airways
Deal found 5/9![Qatar Airways logo]()
$1,679
This United Airlines deal was found by Cheapflights users on 5/9. 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.
Tue 6/231:30 pm
SEA
- ADL
2 stops29h 05m
United Airlines
Tue 6/308:00 pm
ADL
- SEA
3 stops41h 40m
United Airlines
Deal found 5/9![United Airlines logo]()
$2,073
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 May 11, 2026.
Search for one-way flight options from Seattle to Adelaide. Find affordable one-way fares based on user searches. Data last updated May 11, 2026.
This United Airlines deal was found by Cheapflights users on 5/8. 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.
Sun 5/175:25 pm
SEA
- ADL
2 stops25h 15m
United Airlines
Deal found 5/8![United Airlines logo]()
$714
This SmartFares deal was found by Cheapflights users on 5/9. 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.
Sun 6/219:10 pm
SEA
- ADL
2 stops32h 55m
Multiple Airlines
Deal found 5/9![Multiple Airlines logo]()
$750
This Qantas Airways deal was found by Cheapflights users on 5/9. 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.
Mon 6/225:10 pm
SEA
- ADL
2 stops23h 45m
Multiple Airlines
Deal found 5/9![Multiple Airlines logo]()
$841
This Cathay Pacific deal was found by Cheapflights users on 5/8. 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 5/175:28 pm
SEA
- ADL
3 stops47h 27m
Cathay Pacific
Deal found 5/8![Cathay Pacific logo]()
$1,389
This Cathay Pacific deal was found by Cheapflights users on 5/9. 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 5/178:43 am
SEA
- ADL
3 stops40h 32m
Multiple Airlines
Deal found 5/9![Multiple Airlines logo]()
$1,401
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 May 11, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,298 (SmartFares) |
One-way from | $714 (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 2,558,603 searches. Data last updated May 11, 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 - ADL
SEAADL
Seattle/Tacoma Intl
Thu 6/4
8:50 pm-10:35 pm
2 stops33h 15m
Adelaide
Thu 6/11
7:10 pm-11:59 pm
2 stops45h 19m
$1,298
Quickest round-trip
SeattleAdelaide
SEA - ADL
SEAADL
Seattle/Tacoma Intl
Mon 7/6
8:00 am-10:35 pm
2 stops22h 05m
Adelaide
Fri 7/24
3:00 pm-11:59 pm
2 stops25h 29m
$1,472
SeattleAdelaide
SEA - ADL
SEAADL
Seattle/Tacoma Intl
Thu 6/4
1:30 pm-11:05 am
2 stops29h 05m
Adelaide
Thu 6/11
8:00 pm-9:10 pm
3 stops41h 40m
$1,823
SeattleAdelaide
SEA - ADL
SEAADL
Seattle/Tacoma Intl
Mon 7/6
6:00 am-5:45 pm
2 stops43h 15m
Adelaide
Fri 7/24
6:25 am-6:32 pm
3 stops28h 37m
$1,939
SeattleAdelaide
SEA - ADL
SEAADL
Seattle/Tacoma Intl
Mon 7/6
5:15 pm-8:05 pm
1 stop34h 20m
Adelaide
Fri 7/24
10:00 pm-1:25 pm
1 stop31h 55m
$3,178
SeattleAdelaide
SEA - ADL
SEAADL
Seattle/Tacoma Intl
Sat 9/5
5:22 pm-1:35 pm
2 stops27h 43m
Adelaide
Tue 10/6
7:45 pm-12:16 pm
2 stops34h 01m
$3,265
SeattleAdelaide
SEA - ADL
SEAADL
Seattle/Tacoma Intl
Sun 9/6
10:15 am-7:25 am
1 stop28h 40m
Adelaide
Mon 10/5
6:35 pm-8:45 am
1 stop31h 40m
$3,334
SeattleAdelaide
SEA - ADL
SEAADL
Seattle/Tacoma Intl
Wed 9/9
4:59 pm-11:05 am
2 stops25h 36m
Adelaide
Sat 10/3
6:00 am-9:57 pm
2 stops32h 27m
$3,467
Cheapest one-way
SeattleAdelaide
SEA - ADL
SEAADL
Seattle/Tacoma Intl
Sun 5/17
5:25 pm-11:10 am
2 stops25h 15m
$714
Quickest one-way
SeattleAdelaide
SEA - ADL
SEAADL
Seattle/Tacoma Intl
Mon 6/22
5:10 pm-9:25 am
2 stops23h 45m
$841
Showing 1-10 of 12 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 May.
| 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 May 11, 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.
Entertainment
7.2
Crew
8.1
Comfort
7.4
Food
7.0
Boarding
7.7
Overall
7.5
Reviews
1 / 20
2.0
MediocreMidhat,Apr 2026
AKL - ADL
Entertainment
7.2
Crew
8.1
Comfort
7.4
Food
7.0
Boarding
7.7
Overall
7.5
Reviews
1 / 20
2.0
MediocreMidhat,Apr 2026
AKL - 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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Seattle and Adelaide flights
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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 May 11, 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 May 11, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$1,088 | Average$1,211 | FlexibilityNo cancel fee | On-time74% |