$570+ Cheap flights from Portland (PDX) to Sydney (SYD)
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 11/18. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — SYD
Aug 25 — Sep 11
Round-trip
1 adult, Economy
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Find cheap flights from Portland to Sydney with Cheapflights
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Cheapest
Best
Last-minute
One-way
Cheapest flights from Portland to SydneyExplore the most affordable flight options available from Portland to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 26, 2026.
Explore the most affordable flight options available from Portland to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 26, 2026.
This SmartFares deal was found by Cheapflights users on 7/25. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/93:30 pm
PDX
- SYD
1 stop22h 50m
Air Canada
Sun 8/239:20 am
SYD
- PDX
1 stop17h 11m
Air Canada
Deal found 7/25![Air Canada logo]()
$1,020
This BYOjet deal was found by Cheapflights users on 7/22. 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.
Wed 10/287:10 pm
PDX
- SYD
1 stop19h 25m
Air Canada
Mon 11/211:20 am
SYD
- PDX
1 stop22h 21m
Air Canada
Deal found 7/22![Air Canada logo]()
$1,047
This Air Canada deal was found by Cheapflights users on 7/22. 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 10/67:45 pm
PDX
- SYD
1 stop18h 35m
Air Canada
Mon 10/1910:20 am
SYD
- PDX
1 stop17h 11m
Air Canada
Deal found 7/22![Air Canada logo]()
$1,049
This FlightHub deal was found by Cheapflights users on 7/25. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/127:45 pm
PDX
- SYD
1 stop18h 35m
Air Canada
Tue 10/2710:20 am
SYD
- PDX
1 stop17h 06m
Air Canada
Deal found 7/25![Air Canada logo]()
$1,054
This oojo deal was found by Cheapflights users on 7/24. 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.
Sun 9/61:53 pm
PDX
- SYD
1 stop24h 12m
Qantas Airways
Sun 9/139:10 am
SYD
- PDX
1 stop21h 15m
Qantas Airways
Deal found 7/24![Qantas Airways logo]()
$1,066
This oojo deal was found by Cheapflights users on 7/23. 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 8/35:08 pm
PDX
- SYD
1 stop20h 57m
Qantas Airways
Mon 8/175:50 pm
SYD
- PDX
1 stop23h 06m
Qantas Airways
Deal found 7/23![Qantas Airways logo]()
$1,067
This Air Canada deal was found by Cheapflights users on 7/25. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/93:30 pm
PDX
- SYD
1 stop22h 50m
Multiple Airlines
Sun 8/236:00 am
SYD
- PDX
2 stops20h 31m
Multiple Airlines
Deal found 7/25![Multiple Airlines logo]()
$1,068
This Air Canada deal was found by Cheapflights users on 7/23. 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 8/107:45 pm
PDX
- SYD
1 stop18h 35m
Multiple Airlines
Wed 8/196:00 am
SYD
- PDX
2 stops20h 31m
Multiple Airlines
Deal found 7/23![Multiple Airlines logo]()
$1,070
This Kiwi.com deal was found by Cheapflights users on 7/23. 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 8/248:00 am
PDX
- SYD
1 stop17h 50m
Multiple Airlines
Fri 8/281:15 pm
SYD
- PDX
2 stops39h 20m
Multiple Airlines
Deal found 7/23![Multiple Airlines logo]()
$1,072
This Justfly.com deal was found by Cheapflights users on 7/24. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/293:30 pm
PDX
- SYD
1 stop22h 50m
Air Canada
Mon 11/29:00 am
SYD
- PDX
2 stops19h 26m
Air Canada
Deal found 7/24![Air Canada logo]()
$1,074
Best flights from Portland to SydneyDiscover carefully curated flight deals from Portland to Sydney that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 26, 2026.
Discover carefully curated flight deals from Portland to Sydney that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 26, 2026.
This Delta deal was found by Cheapflights users on 7/25. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/269:55 am
PDX
- SYD
2 stops27h 35m
Delta
Mon 11/910:40 am
SYD
- PDX
2 stops25h 24m
Delta
Deal found 7/25![Delta logo]()
$1,100
This United Airlines deal was found by Cheapflights users on 7/24. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/3112:45 pm
PDX
- SYD
2 stops25h 15m
United Airlines
Sun 9/139:30 am
SYD
- PDX
2 stops30h 23m
United Airlines
Deal found 7/24![United Airlines logo]()
$1,100
This Alaska Airlines deal was found by Cheapflights users on 7/24. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/235:35 pm
PDX
- SYD
1 stop32h 15m
Multiple Airlines
Thu 9/38:45 pm
SYD
- PDX
2 stops33h 25m
Multiple Airlines
Deal found 7/24![Multiple Airlines logo]()
$1,285
This Qantas Airways deal was found by Cheapflights users on 7/25. 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 Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/85:00 pm
PDX
- SYD
2 stops22h 20m
Qantas Airways
Thu 11/1210:25 am
SYD
- PDX
2 stops25h 10m
Qantas Airways
Deal found 7/25![Qantas Airways logo]()
$1,586
This United Airlines deal was found by Cheapflights users on 7/24. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/229:00 am
PDX
- SYD
2 stops29h 05m
United Airlines
Sun 12/69:15 am
SYD
- PDX
1 stop21h 58m
United Airlines
Deal found 7/24![United Airlines logo]()
$1,100
This Delta deal was found by Cheapflights users on 7/24. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1212:25 pm
PDX
- SYD
2 stops25h 25m
Delta
Thu 9/39:15 am
SYD
- PDX
2 stops27h 29m
Delta
Deal found 7/24![Delta logo]()
$1,150
This United Airlines deal was found by Cheapflights users on 7/23. 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 9/124:07 pm
PDX
- SYD
2 stops45h 53m
United Airlines
Sun 9/2010:20 am
SYD
- PDX
2 stops27h 45m
United Airlines
Deal found 7/23![United Airlines logo]()
$1,115
This United Airlines deal was found by Cheapflights users on 7/22. 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.
Fri 9/256:50 am
PDX
- SYD
2 stops31h 05m
United Airlines
Sun 10/411:20 am
SYD
- PDX
2 stops21h 45m
United Airlines
Deal found 7/22![United Airlines logo]()
$1,150
This Alaska Airlines deal was found by Cheapflights users on 7/21. 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.
Wed 8/55:00 am
PDX
- SYD
2 stops20h 50m
Multiple Airlines
Sat 8/88:45 pm
SYD
- PDX
2 stops27h 52m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$1,488
This United Airlines deal was found by Cheapflights users on 7/21. 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 12/287:32 pm
PDX
- SYD
1 stop39h 48m
United Airlines
Sun 1/109:15 am
SYD
- PDX
3 stops52h 16m
United Airlines
Deal found 7/21![United Airlines logo]()
$1,620
This Air Tahiti Nui deal was found by Cheapflights users on 7/24. 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 Air Tahiti Nui is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/99:30 pm
PDX
- SYD
2 stops49h 15m
Multiple Airlines
Sat 1/307:15 pm
SYD
- PDX
3 stops44h 16m
Multiple Airlines
Deal found 7/24![Multiple Airlines logo]()
$2,179
This United Airlines deal was found by Cheapflights users on 7/22. 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 12/157:49 pm
PDX
- SYD
1 stop18h 31m
United Airlines
Mon 12/281:20 pm
SYD
- PDX
1 stop17h 42m
United Airlines
Deal found 7/22![United Airlines logo]()
$1,790
Last-minute flights from Portland to SydneyDiscover last-minute flight deals from Portland to Sydney. Data last updated July 26, 2026 and is based on user searches.
Discover last-minute flight deals from Portland to Sydney. Data last updated July 26, 2026 and is based on user searches.
This oojo deal was found by Cheapflights users on 7/23. 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 8/35:08 pm
PDX
- SYD
1 stop20h 57m
Qantas Airways
Mon 8/175:50 pm
SYD
- PDX
1 stop23h 06m
Qantas Airways
Deal found 7/23![Qantas Airways logo]()
$1,067
This Air Canada deal was found by Cheapflights users on 7/24. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/47:45 pm
PDX
- SYD
1 stop18h 35m
Multiple Airlines
Tue 8/186:00 am
SYD
- PDX
2 stops20h 31m
Multiple Airlines
Deal found 7/24![Multiple Airlines logo]()
$1,069
This Air Canada deal was found by Cheapflights users on 7/21. 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.
Wed 8/53:30 pm
PDX
- SYD
1 stop22h 50m
Multiple Airlines
Sat 8/88:15 pm
SYD
- PDX
2 stops30h 16m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$1,079
This SmartFares deal was found by Cheapflights users on 7/25. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/93:30 pm
PDX
- SYD
1 stop22h 50m
Air Canada
Sun 8/239:20 am
SYD
- PDX
1 stop17h 11m
Air Canada
Deal found 7/25![Air Canada logo]()
$1,020
This Air Canada deal was found by Cheapflights users on 7/25. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/93:30 pm
PDX
- SYD
1 stop22h 50m
Multiple Airlines
Sun 8/236:00 am
SYD
- PDX
2 stops20h 31m
Multiple Airlines
Deal found 7/25![Multiple Airlines logo]()
$1,068
This Air Canada deal was found by Cheapflights users on 7/23. 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 8/107:45 pm
PDX
- SYD
1 stop18h 35m
Multiple Airlines
Wed 8/196:00 am
SYD
- PDX
2 stops20h 31m
Multiple Airlines
Deal found 7/23![Multiple Airlines logo]()
$1,070
This Kiwi.com deal was found by Cheapflights users on 7/24. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/127:46 am
PDX
- SYD
1 stop18h 04m
Multiple Airlines
Fri 8/281:15 pm
SYD
- PDX
2 stops39h 20m
Multiple Airlines
Deal found 7/24![Multiple Airlines logo]()
$1,081
This Kiwi.com deal was found by Cheapflights users on 7/23. 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 8/248:00 am
PDX
- SYD
1 stop17h 50m
Multiple Airlines
Fri 8/281:15 pm
SYD
- PDX
2 stops39h 20m
Multiple Airlines
Deal found 7/23![Multiple Airlines logo]()
$1,072
This Kiwi.com deal was found by Cheapflights users on 7/23. 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.
Wed 8/265:38 pm
PDX
- SYD
1 stop20h 52m
Qantas Airways
Wed 9/25:50 pm
SYD
- PDX
1 stop23h 09m
Qantas Airways
Deal found 7/23![Qantas Airways logo]()
$1,080
This Air Canada deal was found by Cheapflights users on 7/22. 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 8/313:30 pm
PDX
- SYD
1 stop22h 50m
Air Canada
Sun 9/139:20 am
SYD
- PDX
1 stop17h 11m
Air Canada
Deal found 7/22![Air Canada logo]()
$1,049
One-way flights from Portland to SydneySearch for one-way flight options from Portland to Sydney. Find affordable one-way fares based on user searches. Data last updated July 26, 2026.
Search for one-way flight options from Portland to Sydney. Find affordable one-way fares based on user searches. Data last updated July 26, 2026.
This Ovago deal was found by Cheapflights users on 7/21. 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.
Wed 11/187:00 am
PDX
- SYD
1 stop17h 45m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$570
This Ovago deal was found by Cheapflights users on 7/21. 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.
Tue 9/1510:30 am
PDX
- SYD
1 stop39h 20m
Alaska Airlines
Deal found 7/21![Alaska Airlines logo]()
$593
This Air Canada deal was found by Cheapflights users on 7/25. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/157:45 pm
PDX
- SYD
1 stop18h 35m
Air Canada
Deal found 7/25![Air Canada logo]()
$613
This Aunt Betty deal was found by Cheapflights users on 7/21. 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.
Fri 7/3110:30 am
PDX
- SYD
1 stop39h 20m
Alaska Airlines
Deal found 7/21![Alaska Airlines logo]()
$634
This Kiwi.com deal was found by Cheapflights users on 7/25. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/711:38 am
PDX
- SYD
2 stops37h 37m
Multiple Airlines
Deal found 7/25![Multiple Airlines logo]()
$637
This FlightHub deal was found by Cheapflights users on 7/21. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/157:45 pm
PDX
- SYD
2 stops25h 00m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$639
This Kiwi.com deal was found by Cheapflights users on 7/25. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/82:30 pm
PDX
- SYD
3 stops31h 50m
Multiple Airlines
Deal found 7/25![Multiple Airlines logo]()
$680
Find flight deals from Portland to Sydney
Discover tips and strategies to find the most affordable flight options for your journey from Portland (PDX) to Sydney (SYD). 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 July 26, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,020 (SmartFares) |
One-way from | $570 (Ovago) |
Popular in | December |
Cheapest in | September |
Average price | $1,345 |
Cheapflights Fare Finder
Customize your flight search to find flights from Portland to Sydney 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 July 26, 2026.
Use the filters below to find and compare flights from Portland to Sydney that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
PortlandSydney
PDX - SYD
PDXSYD
Portland
Mon 10/26
9:55 am-7:30 am
2 stops27h 35m
Sydney Kingsford Smith
Mon 11/9
10:40 am-5:04 pm
2 stops25h 24m
$1,100
PortlandSydney
PDX - SYD
PDXSYD
Portland
Mon 8/31
12:45 pm-7:00 am
2 stops25h 15m
Sydney Kingsford Smith
Sun 9/13
9:30 am-10:53 pm
2 stops30h 23m
$1,100
PortlandSydney
PDX - SYD
PDXSYD
Portland
Sun 11/22
9:00 am-9:05 am
2 stops29h 05m
Sydney Kingsford Smith
Sun 12/6
9:15 am-12:13 pm
1 stop21h 58m
$1,100
PortlandSydney
PDX - SYD
PDXSYD
Portland
Sat 9/12
4:07 pm-7:00 am
2 stops45h 53m
Sydney Kingsford Smith
Sun 9/20
10:20 am-9:05 pm
2 stops27h 45m
$1,115
PortlandSydney
PDX - SYD
PDXSYD
Portland
Wed 8/12
12:25 pm-6:50 am
2 stops25h 25m
Sydney Kingsford Smith
Thu 9/3
9:15 am-7:44 pm
2 stops27h 29m
$1,150
PortlandSydney
PDX - SYD
PDXSYD
Portland
Fri 9/25
6:50 am-6:55 am
2 stops31h 05m
Sydney Kingsford Smith
Sun 10/4
11:20 am-3:05 pm
2 stops21h 45m
$1,150
PortlandSydney
PDX - SYD
PDXSYD
Portland
Sun 8/23
5:35 pm-6:50 pm
1 stop32h 15m
Sydney Kingsford Smith
Thu 9/3
8:45 pm-1:10 pm
2 stops33h 25m
$1,285
PortlandSydney
PDX - SYD
PDXSYD
Portland
Wed 8/5
5:00 am-6:50 pm
2 stops20h 50m
Sydney Kingsford Smith
Sat 8/8
8:45 pm-7:37 am
2 stops27h 52m
$1,488
PortlandSydney
PDX - SYD
PDXSYD
Portland
Sun 11/8
5:00 pm-10:20 am
2 stops22h 20m
Sydney Kingsford Smith
Thu 11/12
10:25 am-4:35 pm
2 stops25h 10m
$1,586
PortlandSydney
PDX - SYD
PDXSYD
Portland
Mon 12/28
7:32 pm-6:20 am
1 stop39h 48m
Sydney Kingsford Smith
Sun 1/10
9:15 am-6:31 pm
3 stops52h 16m
$1,620
Showing 1-10 of 20 resultsSorted by cheapest first
Compare providers for flights from Portland to Sydney
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 Portland to Sydney in July.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Portland-Sydney flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Portland-Sydney flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Portland-Sydney flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Portland-Sydney 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 Portland-Sydney 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 Portland to Sydney
Have a flexible travel schedule? Discover the best time to fly to Sydney from Portland with our price prediction graph.
PDX-SYD
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.
Cheapflights Insights
Everything you need to know about your flight from Portland to Sydney
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How far ahead should I book a flight from Portland to Sydney?
Booking 54 days in advance of your planned departure date is, on average, the best time to get cheap flights from Portland to Sydney. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest month to book a flight from Portland to Sydney?
Currently, September is the cheapest month in which you can book a flight from Portland to Sydney (average of $1,035). Flying from Portland to Sydney in December is currently the most expensive (average of $1,794). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
How much does it cost to fly round-trip from Portland to Sydney?
Airfare is below average for this route at the moment.
Portland to Sydney flights typically cost between $1,161 and $1,358 in August.The cheapest round-trip price found within the last 5 days was $1,020 on Air Canada (Aug 9-Aug 23).
What’s the top layover airport for flights from Portland to Sydney?
Share of 1-stop round-trip flights from Portland to Sydney chosen by Cheapflights users in the past 12 months, using the same layover each way.
Los Angeles (LAX) – chosen by Cheapflights users on 40% of 1-stop itineraries from Portland to Sydney on Cheapflights.
What’s the cheapest layover airport for flights from Portland to Sydney?
Average round-trip fare for 1-stop flights from Portland to Sydney, chosen by Cheapflights users in the past 12 months, with the same layover each way.
San Francisco (SFO) is the most affordable 1-stop option, with an average round-trip price of $1,280.
What’s the fastest layover option from Portland to Sydney?
Shortest average travel time for 1-stop one-way flights from Portland to Sydney, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.
Flights via San Francisco (SFO) have the shortest average one-way travel time for 1-stop routes: 18h 37m.
Which airport typically offers the quickest layover for flights from Portland to Sydney?
Average layover duration for 1-stop one-way flights from Portland to Sydney, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via San Francisco (SFO) offer the fastest connection on this route, with an average layover time of 1h 51m.
Reviews of airlines servicing Sydney
Get insights into the airlines that provide service to Sydney. 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 Sydney. Reviews last updated July 26, 2026.
Peruse reviews from past customers who have flown with Alaska Airlines,Qantas Airways, andUnited Airlines from Portland to Sydney to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
7.8
Entertainment
7.0
Boarding
8.1
Food
7.0
Crew
8.5
Overall
7.9
Reviews
1 / 20
8.0
ExcellentAnonymous,Nov 2025
PDX - BNA
Comfort
7.8
Entertainment
7.0
Boarding
8.1
Food
7.0
Crew
8.5
Overall
7.9
Reviews
1 / 20
8.0
ExcellentAnonymous,Nov 2025
PDX - BNA
Comfort
7.8
Entertainment
7.0
Boarding
8.1
Food
7.0
Crew
8.5
Overall
7.9
Reviews
1 / 20
8.0
ExcellentAnonymous,Nov 2025
PDX - BNA
Comfort
7.8
Entertainment
7.0
Boarding
8.1
Food
7.0
Crew
8.5
Overall
7.9
Reviews
1 / 20
8.0
ExcellentAnonymous,Nov 2025
PDX - BNA
Comfort
7.8
Entertainment
7.0
Boarding
8.1
Food
7.0
Crew
8.5
Overall
7.9
Reviews
1 / 20
8.0
ExcellentAnonymous,Nov 2025
PDX - BNA
Comfort
7.8
Entertainment
7.0
Boarding
8.1
Food
7.0
Crew
8.5
Overall
7.9
Reviews
1 / 20
8.0
ExcellentAnonymous,Nov 2025
PDX - BNA
Related info for your journey
Find useful and relevant information for your journey from Portland to Sydney. 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 Sydney?
Book flights to Sydney if you plan to visit one of these locationsParramatta
Wollongong
Coogee
Manly
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Portland and Sydney flights
Browse other Portland and Sydney flight options. Last updated on July 26, 2026.
Other flights from Portland
Browse through other flights departing from Portland. Flights are based on user searches made on Cheapflights and were last updated on July 26, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Other flights to Sydney
Explore flights to Sydney departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on July 26, 2026.
Top 7 airlines flying from Portland to Sydney
Discover the top 7 airlines that operate flights from Portland to Sydney. 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 July 26, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$497 | Average$1,279 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$550 | Average$1,153 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$877 | Average$1,217 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$886 | Average$1,168 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$950 | Average$1,154 | FlexibilityNo cancel fee | On-time74% | |
| Cheapest$954 | Average$974 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$999 | Average$1,182 | FlexibilityNo cancel fee | On-time75% |