$564+ Cheap flights from Washington 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 3/6. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — ADL
Mar 15 — Mar 221
1 adult, Economy
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Cheapest flights from Washington to AdelaideExplore the most affordable flight options available from Washington to Adelaide. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 13, 2026.
Explore the most affordable flight options available from Washington to Adelaide. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 13, 2026.
This Air Canada deal was found by Cheapflights users on 2/9. 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 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 stops25h 40m
Multiple Airlines
Fri 7/247:35 pm
ADL
- SEA
2 stops30h 12m
Multiple Airlines
Deal found 2/9![Multiple Airlines logo]()
$998
This Air Canada deal was found by Cheapflights users on 2/12. 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.
Fri 5/17:20 pm
SEA
- ADL
2 stops25h 40m
Multiple Airlines
Sat 5/165:15 pm
ADL
- SEA
2 stops32h 30m
Multiple Airlines
Deal found 2/12![Multiple Airlines logo]()
$1,001
This Air Canada deal was found by Cheapflights users on 2/12. 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 3/283:40 pm
SEA
- ADL
2 stops28h 45m
Air Canada
Sat 4/256:55 pm
ADL
- SEA
2 stops31h 10m
Air Canada
Deal found 2/12![Air Canada logo]()
$1,012
This Air Canada deal was found by Cheapflights users on 2/12. 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 3/88:00 pm
SEA
- ADL
2 stops29h 40m
Multiple Airlines
Wed 3/187:00 pm
ADL
- SEA
2 stops37h 31m
Multiple Airlines
Deal found 2/12![Multiple Airlines logo]()
$1,026
This BusinessClass deal was found by Cheapflights users on 2/11. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/46:58 pm
SEA
- ADL
2 stops24h 07m
Multiple Airlines
Thu 8/2012:35 pm
ADL
- SEA
2 stops24h 00m
Multiple Airlines
Deal found 2/11![Multiple Airlines logo]()
$1,075
This United Airlines deal was found by Cheapflights users on 2/12. 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 2/237:57 pm
PDX
- ADL
1 stop19h 03m
United Airlines
Mon 3/22:55 pm
ADL
- PDX
1 stop18h 23m
United Airlines
Deal found 2/12![United Airlines logo]()
$1,111
This United Airlines deal was found by Cheapflights users on 2/12. 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 3/811:59 pm
SEA
- ADL
2 stops39h 51m
United Airlines
Wed 3/182:15 pm
ADL
- SEA
1 stop19h 29m
United Airlines
Deal found 2/12![United Airlines logo]()
$1,125
This oojo deal was found by Cheapflights users on 2/10. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/62:32 pm
SEA
- ADL
2 stops28h 03m
Qantas Airways
Fri 7/248:05 pm
ADL
- SEA
2 stops42h 00m
Qantas Airways
Deal found 2/10![Qantas Airways logo]()
$1,213
This Qantas Airways deal was found by Cheapflights users on 2/9. 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.
Sun 2/156:25 am
PDX
- ADL
2 stops38h 30m
Qantas Airways
Thu 2/196:05 am
ADL
- PDX
2 stops29h 38m
Qantas Airways
Deal found 2/9![Qantas Airways logo]()
$1,273
This Qantas Airways deal was found by Cheapflights users on 2/12. 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.
Sun 2/154:50 pm
SEA
- ADL
2 stops26h 20m
Qantas Airways
Thu 2/197:50 am
ADL
- SEA
2 stops29h 37m
Qantas Airways
Deal found 2/12![Qantas Airways logo]()
$1,305
This Bravofly deal was found by Cheapflights users on 2/10. 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 Bravofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/285:38 pm
PDX
- ADL
2 stops26h 27m
Qantas Airways
Sat 4/46:30 pm
ADL
- PDX
2 stops44h 52m
Qantas Airways
Deal found 2/10![Qantas Airways logo]()
$1,314
This Cathay Pacific deal was found by Cheapflights users on 2/10. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/16:00 am
SEA
- ADL
3 stops39h 15m
Multiple Airlines
Sun 11/1512:00 pm
ADL
- SEA
2 stops40h 21m
Multiple Airlines
Deal found 2/10![Multiple Airlines logo]()
$1,317
Best flights from Washington to AdelaideDiscover carefully curated flight deals from Washington to Adelaide that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 13, 2026.
Discover carefully curated flight deals from Washington to Adelaide that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 13, 2026.
This Air Canada deal was found by Cheapflights users on 2/12. 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 3/283:40 pm
SEA
- ADL
2 stops28h 45m
Air Canada
Sat 4/256:55 pm
ADL
- SEA
2 stops31h 10m
Air Canada
Deal found 2/12![Air Canada logo]()
$1,012
This Air Canada deal was found by Cheapflights users on 2/12. 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 3/88:00 pm
SEA
- ADL
2 stops29h 40m
Multiple Airlines
Wed 3/187:00 pm
ADL
- SEA
2 stops37h 31m
Multiple Airlines
Deal found 2/12![Multiple Airlines logo]()
$1,026
This United Airlines deal was found by Cheapflights users on 2/12. 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 2/231:18 pm
PDX
- ADL
2 stops25h 42m
United Airlines
Mon 3/22:55 pm
ADL
- PDX
1 stop22h 30m
United Airlines
Deal found 2/12![United Airlines logo]()
$1,111
This Bravofly deal was found by Cheapflights users on 2/10. 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 Bravofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/285:38 pm
PDX
- ADL
2 stops26h 27m
Qantas Airways
Sat 4/46:30 pm
ADL
- PDX
2 stops44h 52m
Qantas Airways
Deal found 2/10![Qantas Airways logo]()
$1,314
This Cathay Pacific deal was found by Cheapflights users on 2/12. 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 3/288:08 pm
SEA
- ADL
3 stops43h 47m
Cathay Pacific
Sat 4/257:45 pm
ADL
- SEA
3 stops43h 37m
Cathay Pacific
Deal found 2/12![Cathay Pacific logo]()
$1,428
This BYOjet deal was found by Cheapflights users on 2/12. 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 BYOjet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/283:40 pm
SEA
- ADL
2 stops25h 45m
Air New Zealand
Sat 4/255:10 pm
ADL
- SEA
3 stops45h 06m
Air New Zealand
Deal found 2/12![Air New Zealand logo]()
$1,466
This KAYAK deal was found by Cheapflights users on 2/12. 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.
Fri 5/110:15 am
SEA
- ADL
1 stop61h 35m
Singapore Airlines
Sat 5/165:35 pm
ADL
- SEA
1 stop31h 40m
Singapore Airlines
Deal found 2/12![Singapore Airlines logo]()
$1,612
This Qatar Airways deal was found by Cheapflights users on 2/12. 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.
Fri 5/14:30 pm
SEA
- ADL
2 stops37h 10m
Qatar Airways
Sat 5/169:40 pm
ADL
- SEA
1 stop31h 35m
Qatar Airways
Deal found 2/12![Qatar Airways logo]()
$1,748
This United Airlines deal was found by Cheapflights users on 2/12. 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 3/811:59 pm
SEA
- ADL
2 stops39h 51m
United Airlines
Wed 3/182:15 pm
ADL
- SEA
1 stop19h 29m
United Airlines
Deal found 2/12![United Airlines logo]()
$1,125
This Air Canada deal was found by Cheapflights users on 2/11. 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 3/283:40 pm
SEA
- ADL
2 stops28h 45m
Multiple Airlines
Sat 4/47:35 pm
ADL
- SEA
2 stops31h 30m
Multiple Airlines
Deal found 2/11![Multiple Airlines logo]()
$1,305
This Singapore Airlines deal was found by Cheapflights users on 2/12. 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.
Sat 3/289:45 am
SEA
- ADL
1 stop38h 05m
Singapore Airlines
Sat 4/259:10 am
ADL
- SEA
1 stop40h 05m
Singapore Airlines
Deal found 2/12![Singapore Airlines logo]()
$1,772
This Trip.com deal was found by Cheapflights users on 2/12. 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.
Sat 3/289:08 am
SEA
- ADL
2 stops33h 57m
Multiple Airlines
Sat 4/255:35 pm
ADL
- SEA
1 stop31h 40m
Multiple Airlines
Deal found 2/12![Multiple Airlines logo]()
$1,654
This Cathay Pacific deal was found by Cheapflights users on 2/11. 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 3/288:08 pm
SEA
- ADL
3 stops43h 47m
Cathay Pacific
Sat 4/412:40 pm
ADL
- SEA
3 stops44h 32m
Cathay Pacific
Deal found 2/11![Cathay Pacific logo]()
$1,851
This Aunt Betty deal was found by Cheapflights users on 2/10. 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 Aunt Betty is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/283:15 pm
PDX
- ADL
3 stops27h 10m
Air New Zealand
Sat 4/46:30 pm
ADL
- PDX
3 stops41h 07m
Air New Zealand
Deal found 2/10![Air New Zealand logo]()
$1,969
This BYOjet deal was found by Cheapflights users on 2/10. 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 BYOjet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/282:37 pm
PDX
- ADL
2 stops26h 48m
Multiple Airlines
Sat 4/46:30 pm
ADL
- PDX
3 stops47h 44m
Multiple Airlines
Deal found 2/10![Multiple Airlines logo]()
$1,709
This Cathay Pacific deal was found by Cheapflights users on 2/12. 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 5/18:31 am
SEA
- ADL
3 stops36h 34m
Multiple Airlines
Sat 5/167:45 pm
ADL
- SEA
3 stops37h 20m
Multiple Airlines
Deal found 2/12![Multiple Airlines logo]()
$1,738
This Cathay Pacific deal was found by Cheapflights users on 2/12. 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.
Mon 2/235:50 pm
PDX
- ADL
3 stops45h 05m
Cathay Pacific
Mon 3/212:00 pm
ADL
- PDX
3 stops47h 11m
Cathay Pacific
Deal found 2/12![Cathay Pacific logo]()
$2,134
Last-minute flights from Washington to AdelaideDiscover last-minute flight deals from Washington to Adelaide. Data last updated February 13, 2026 and is based on user searches.
Discover last-minute flight deals from Washington to Adelaide. Data last updated February 13, 2026 and is based on user searches.
This Qantas Airways deal was found by Cheapflights users on 2/12. 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.
Sun 2/154:50 pm
SEA
- ADL
2 stops26h 20m
Qantas Airways
Thu 2/197:50 am
ADL
- SEA
2 stops29h 37m
Qantas Airways
Deal found 2/12![Qantas Airways logo]()
$1,305
This United Airlines deal was found by Cheapflights users on 2/11. 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 2/157:29 pm
SEA
- ADL
2 stops24h 11m
United Airlines
Thu 2/197:15 am
ADL
- SEA
3 stops32h 16m
United Airlines
Deal found 2/11![United Airlines logo]()
$1,649
This United Airlines deal was found by Cheapflights users on 2/12. 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 2/237:57 pm
PDX
- ADL
1 stop19h 03m
United Airlines
Mon 3/22:55 pm
ADL
- PDX
1 stop18h 23m
United Airlines
Deal found 2/12![United Airlines logo]()
$1,111
This Cathay Pacific deal was found by Cheapflights users on 2/12. 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.
Mon 2/235:50 pm
PDX
- ADL
3 stops45h 05m
Cathay Pacific
Mon 3/212:00 pm
ADL
- PDX
3 stops47h 11m
Cathay Pacific
Deal found 2/12![Cathay Pacific logo]()
$2,134
This Air Canada deal was found by Cheapflights users on 2/12. 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 3/88:00 pm
SEA
- ADL
2 stops29h 40m
Multiple Airlines
Wed 3/187:00 pm
ADL
- SEA
2 stops37h 31m
Multiple Airlines
Deal found 2/12![Multiple Airlines logo]()
$1,026
This United Airlines deal was found by Cheapflights users on 2/12. 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 3/811:59 pm
SEA
- ADL
2 stops39h 51m
United Airlines
Wed 3/182:15 pm
ADL
- SEA
1 stop19h 29m
United Airlines
Deal found 2/12![United Airlines logo]()
$1,125
This Air Canada deal was found by Cheapflights users on 2/12. 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 3/283:40 pm
SEA
- ADL
2 stops28h 45m
Air Canada
Sat 4/256:55 pm
ADL
- SEA
2 stops31h 10m
Air Canada
Deal found 2/12![Air Canada logo]()
$1,012
This Cathay Pacific deal was found by Cheapflights users on 2/12. 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 3/288:08 pm
SEA
- ADL
3 stops43h 47m
Cathay Pacific
Sat 4/257:45 pm
ADL
- SEA
3 stops43h 37m
Cathay Pacific
Deal found 2/12![Cathay Pacific logo]()
$1,428
This BYOjet deal was found by Cheapflights users on 2/12. 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 BYOjet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/283:40 pm
SEA
- ADL
2 stops25h 45m
Air New Zealand
Sat 4/255:10 pm
ADL
- SEA
3 stops45h 06m
Air New Zealand
Deal found 2/12![Air New Zealand logo]()
$1,466
This Trip.com deal was found by Cheapflights users on 2/12. 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.
Sat 3/289:08 am
SEA
- ADL
2 stops33h 57m
Multiple Airlines
Sat 4/255:35 pm
ADL
- SEA
1 stop31h 40m
Multiple Airlines
Deal found 2/12![Multiple Airlines logo]()
$1,654
One-way flights from Washington to AdelaideSearch for one-way flight options from Washington to Adelaide. Find affordable one-way fares based on user searches. Data last updated February 13, 2026.
Search for one-way flight options from Washington to Adelaide. Find affordable one-way fares based on user searches. Data last updated February 13, 2026.
This Kiwi.com deal was found by Cheapflights users on 2/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/68:45 am
SEA
- ADL
2 stops52h 10m
Multiple Airlines
Deal found 2/9![Multiple Airlines logo]()
$564
This Kiwi.com deal was found by Cheapflights users on 2/12. 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 3/124:50 pm
SEA
- ADL
2 stops25h 55m
Multiple Airlines
Deal found 2/12![Multiple Airlines logo]()
$577
This Kiwi.com deal was found by Cheapflights users on 2/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/95:19 pm
PDX
- ADL
2 stops46h 21m
Multiple Airlines
Deal found 2/10![Multiple Airlines logo]()
$612
This Air Canada deal was found by Cheapflights users on 2/12. 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 stops26h 05m
Air Canada
Deal found 2/12![Air Canada logo]()
$684
This Alaska Airlines deal was found by Cheapflights users on 2/9. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/178:50 pm
SEA
- ADL
2 stops45h 45m
Multiple Airlines
Deal found 2/9![Multiple Airlines logo]()
$725
This Qantas Airways deal was found by Cheapflights users on 2/10. 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 Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/176:40 pm
SEA
- ADL
2 stops23h 55m
Qantas Airways
Deal found 2/10![Qantas Airways logo]()
$750
This United Airlines deal was found by Cheapflights users on 2/12. 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 3/127:34 pm
SEA
- ADL
1 stop20h 16m
United Airlines
Deal found 2/12![United Airlines logo]()
$837
This Cathay Pacific deal was found by Cheapflights users on 2/12. 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 5/176:59 pm
SEA
- ADL
3 stops45h 56m
Cathay Pacific
Deal found 2/12![Cathay Pacific logo]()
$1,076
Find flight deals from Washington to Adelaide
Keep the following information in mind while searching for Washington to Adelaide flight deals. Data was last updated February 13, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $998 (Air Canada) |
One-way from | $564 (Kiwi.com) |
Cheapflights Fare Finder
Customize your flight search to find flights from Washington 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 February 13, 2026.
Use the filters below to find and compare flights from Washington to Adelaide that are best for you.
Fly from
Washington
Fly to
Adelaide
Route
Depart
Return
Price
SeattleAdelaide
SEA - ADL
SEAADL
Seattle/Tacoma Intl
Sat 3/28
3:40 pm-1:55 pm
2 stops28h 45m
Adelaide
Sat 4/25
6:55 pm-9:35 am
2 stops31h 10m
$1,012
SeattleAdelaide
SEA - ADL
SEAADL
Seattle/Tacoma Intl
Sun 3/8
8:00 pm-7:10 pm
2 stops29h 40m
Adelaide
Wed 3/18
7:00 pm-3:01 pm
2 stops37h 31m
$1,026
PortlandAdelaide
PDX - ADL
PDXADL
Portland
Mon 2/23
1:18 pm-9:30 am
2 stops25h 42m
Adelaide
Mon 3/2
2:55 pm-6:55 pm
1 stop22h 30m
$1,111
SeattleAdelaide
SEA - ADL
SEAADL
Seattle/Tacoma Intl
Sun 3/8
11:59 pm-9:20 am
2 stops39h 51m
Adelaide
Wed 3/18
2:15 pm-4:14 pm
1 stop19h 29m
$1,125
SeattleAdelaide
SEA - ADL
SEAADL
Seattle/Tacoma Intl
Sat 3/28
3:40 pm-1:55 pm
2 stops28h 45m
Adelaide
Sat 4/4
7:35 pm-9:35 am
2 stops31h 30m
$1,305
PortlandAdelaide
PDX - ADL
PDXADL
Portland
Sat 3/28
5:38 pm-1:35 pm
2 stops26h 27m
Adelaide
Sat 4/4
6:30 pm-9:52 pm
2 stops44h 52m
$1,314
SeattleAdelaide
SEA - ADL
SEAADL
Seattle/Tacoma Intl
Sat 3/28
8:08 pm-9:25 am
3 stops43h 47m
Adelaide
Sat 4/25
7:45 pm-10:52 pm
3 stops43h 37m
$1,428
SeattleAdelaide
SEA - ADL
SEAADL
Seattle/Tacoma Intl
Sat 3/28
3:40 pm-10:55 am
2 stops25h 45m
Adelaide
Sat 4/25
5:10 pm-9:46 pm
3 stops45h 06m
$1,466
SeattleAdelaide
SEA - ADL
SEAADL
Seattle/Tacoma Intl
Fri 5/1
10:15 am-4:20 pm
1 stop61h 35m
Adelaide
Sat 5/16
5:35 pm-8:45 am
1 stop31h 40m
$1,612
SeattleAdelaide
SEA - ADL
SEAADL
Seattle/Tacoma Intl
Sat 3/28
9:08 am-12:35 pm
2 stops33h 57m
Adelaide
Sat 4/25
5:35 pm-8:45 am
1 stop31h 40m
$1,654
Showing 1-10 of 25 results
Best time to book a flight from Washington to Adelaide
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| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$1,088 | Average$1,166 | FlexibilityNo cancel fee | On-time74% |