$612+ 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 11/2. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — SYD
Jun 24 — Jul 11
Round-trip
1 adult, Economy
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Find cheap flights from Portland to Sydney 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
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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 May 25, 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 May 25, 2026.
This flugladen.de deal was found by Cheapflights users on 5/24. 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 flugladen.de is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/253:30 pm
PDX
- SYD
1 stop22h 50m
Air Canada
Sun 6/79:20 am
SYD
- PDX
1 stop26h 50m
Air Canada
Deal found 5/24![Air Canada logo]()
$1,034
This lol.travel deal was found by Cheapflights users on 5/20. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/247:45 pm
PDX
- SYD
1 stop18h 35m
Air Canada
Sun 6/77:00 am
SYD
- PDX
2 stops19h 30m
Air Canada
Deal found 5/20![Air Canada logo]()
$1,045
This Air Canada deal was found by Cheapflights users on 5/24. 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 6/237:45 pm
PDX
- SYD
1 stop18h 35m
Air Canada
Sun 8/29:20 am
SYD
- PDX
1 stop17h 11m
Air Canada
Deal found 5/24![Air Canada logo]()
$1,060
This lol.travel deal was found by Cheapflights users on 5/20. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/247:45 pm
PDX
- SYD
2 stops23h 55m
Multiple Airlines
Sun 6/77:00 am
SYD
- PDX
2 stops19h 30m
Multiple Airlines
Deal found 5/20![Multiple Airlines logo]()
$1,061
This FlightHub deal was found by Cheapflights users on 5/20. 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.
Sun 8/93:30 pm
PDX
- SYD
1 stop22h 50m
Air Canada
Tue 8/189:20 am
SYD
- PDX
1 stop22h 31m
Air Canada
Deal found 5/20![Air Canada logo]()
$1,070
This Ovago deal was found by Cheapflights users on 5/20. 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.
Sun 8/3010:10 am
PDX
- SYD
1 stop28h 10m
Multiple Airlines
Sun 9/209:20 am
SYD
- PDX
1 stop26h 46m
Multiple Airlines
Deal found 5/20![Multiple Airlines logo]()
$1,078
This Air Canada deal was found by Cheapflights users on 5/24. 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.
Mon 5/2510:10 am
PDX
- SYD
1 stop28h 10m
Multiple Airlines
Sun 6/76:00 am
SYD
- PDX
2 stops25h 45m
Multiple Airlines
Deal found 5/24![Multiple Airlines logo]()
$1,079
This Air Canada deal was found by Cheapflights users on 5/24. 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.
Mon 6/227:45 pm
PDX
- SYD
1 stop18h 35m
Multiple Airlines
Tue 7/216:00 am
SYD
- PDX
2 stops20h 31m
Multiple Airlines
Deal found 5/24![Multiple Airlines logo]()
$1,080
This Air Canada deal was found by Cheapflights users on 5/24. 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 6/237:45 pm
PDX
- SYD
2 stops22h 40m
Multiple Airlines
Sun 8/29:20 am
SYD
- PDX
1 stop17h 11m
Multiple Airlines
Deal found 5/24![Multiple Airlines logo]()
$1,086
This Air Canada deal was found by Cheapflights users on 5/23. 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.
Tue 9/83:30 pm
PDX
- SYD
1 stop22h 50m
Multiple Airlines
Sat 9/198:15 pm
SYD
- PDX
2 stops30h 16m
Multiple Airlines
Deal found 5/23![Multiple Airlines logo]()
$1,087
This Justfly.com deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/157:45 pm
PDX
- SYD
1 stop18h 35m
Multiple Airlines
Sat 9/265:00 pm
SYD
- PDX
2 stops38h 51m
Multiple Airlines
Deal found 5/25![Multiple Airlines logo]()
$1,092
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 May 25, 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 May 25, 2026.
This United Airlines deal was found by Cheapflights users on 5/21. 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 6/1512:50 pm
PDX
- SYD
2 stops25h 05m
United Airlines
Tue 6/2310:20 am
SYD
- PDX
1 stop17h 00m
United Airlines
Deal found 5/21![United Airlines logo]()
$1,159
This Qantas Airways deal was found by Cheapflights users on 5/24. 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 Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/242:45 pm
PDX
- SYD
2 stops25h 35m
Qantas Airways
Wed 10/289:25 pm
SYD
- PDX
1 stop17h 25m
Qantas Airways
Deal found 5/24![Qantas Airways logo]()
$1,253
This Alaska Airlines deal was found by Cheapflights users on 5/24. 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.
Sat 7/257:46 am
PDX
- SYD
1 stop18h 04m
Multiple Airlines
Tue 7/288:45 pm
SYD
- PDX
2 stops20h 07m
Multiple Airlines
Deal found 5/24![Multiple Airlines logo]()
$1,284
This Delta deal was found by Cheapflights users on 5/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/201:25 pm
PDX
- SYD
1 stop24h 25m
Delta
Tue 8/119:15 am
SYD
- PDX
1 stop24h 19m
Delta
Deal found 5/21![Delta logo]()
$1,291
This United Airlines deal was found by Cheapflights users on 5/20. 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.
Wed 8/511:16 am
PDX
- SYD
1 stop26h 39m
United Airlines
Wed 8/1910:20 am
SYD
- PDX
1 stop16h 51m
United Airlines
Deal found 5/20![United Airlines logo]()
$1,160
This United Airlines deal was found by Cheapflights users on 5/20. 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 8/107:00 am
PDX
- SYD
2 stops31h 00m
United Airlines
Wed 8/1910:20 am
SYD
- PDX
1 stop16h 51m
United Airlines
Deal found 5/20![United Airlines logo]()
$1,164
This Delta deal was found by Cheapflights users on 5/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/229:30 am
PDX
- SYD
2 stops28h 20m
Delta
Tue 6/309:15 am
SYD
- PDX
2 stops24h 04m
Delta
Deal found 5/21![Delta logo]()
$1,296
This Alaska Airlines deal was found by Cheapflights users on 5/20. 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.
Fri 8/77:46 am
PDX
- SYD
1 stop18h 04m
Multiple Airlines
Thu 8/208:45 pm
SYD
- PDX
2 stops29h 40m
Multiple Airlines
Deal found 5/20![Multiple Airlines logo]()
$1,300
This United Airlines deal was found by Cheapflights users on 5/20. 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.
Wed 8/511:05 am
PDX
- SYD
2 stops26h 50m
United Airlines
Sun 8/169:30 am
SYD
- PDX
2 stops22h 33m
United Airlines
Deal found 5/20![United Airlines logo]()
$1,164
This Delta deal was found by Cheapflights users on 5/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/237:20 am
PDX
- SYD
2 stops30h 30m
Delta
Tue 6/309:15 am
SYD
- PDX
2 stops24h 04m
Delta
Deal found 5/21![Delta logo]()
$1,296
This United Airlines deal was found by Cheapflights users on 5/23. 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.
Fri 7/38:35 am
PDX
- SYD
3 stops29h 25m
United Airlines
Sun 7/199:30 am
SYD
- PDX
2 stops22h 43m
United Airlines
Deal found 5/23![United Airlines logo]()
$1,280
Last-minute flights from Portland to SydneyDiscover last-minute flight deals from Portland to Sydney. Data last updated May 25, 2026 and is based on user searches.
Discover last-minute flight deals from Portland to Sydney. Data last updated May 25, 2026 and is based on user searches.
This lol.travel deal was found by Cheapflights users on 5/20. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/247:45 pm
PDX
- SYD
1 stop18h 35m
Air Canada
Sun 6/77:00 am
SYD
- PDX
2 stops19h 30m
Air Canada
Deal found 5/20![Air Canada logo]()
$1,045
This lol.travel deal was found by Cheapflights users on 5/20. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/247:45 pm
PDX
- SYD
2 stops23h 55m
Multiple Airlines
Sun 6/77:00 am
SYD
- PDX
2 stops19h 30m
Multiple Airlines
Deal found 5/20![Multiple Airlines logo]()
$1,061
This flugladen.de deal was found by Cheapflights users on 5/24. 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 flugladen.de is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/253:30 pm
PDX
- SYD
1 stop22h 50m
Air Canada
Sun 6/79:20 am
SYD
- PDX
1 stop26h 50m
Air Canada
Deal found 5/24![Air Canada logo]()
$1,034
This Air Canada deal was found by Cheapflights users on 5/24. 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.
Mon 5/2510:10 am
PDX
- SYD
1 stop28h 10m
Multiple Airlines
Sun 6/76:00 am
SYD
- PDX
2 stops25h 45m
Multiple Airlines
Deal found 5/24![Multiple Airlines logo]()
$1,079
This Air Canada deal was found by Cheapflights users on 5/24. 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.
Mon 6/227:45 pm
PDX
- SYD
1 stop18h 35m
Multiple Airlines
Tue 7/216:00 am
SYD
- PDX
2 stops20h 31m
Multiple Airlines
Deal found 5/24![Multiple Airlines logo]()
$1,080
This BusinessClass deal was found by Cheapflights users on 5/22. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/227:46 am
PDX
- SYD
1 stop18h 04m
Alaska Airlines
Tue 7/218:45 pm
SYD
- PDX
1 stop26h 26m
Alaska Airlines
Deal found 5/22![Alaska Airlines logo]()
$1,141
This Air Canada deal was found by Cheapflights users on 5/24. 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 6/237:45 pm
PDX
- SYD
1 stop18h 35m
Air Canada
Sun 8/29:20 am
SYD
- PDX
1 stop17h 11m
Air Canada
Deal found 5/24![Air Canada logo]()
$1,060
This Air Canada deal was found by Cheapflights users on 5/24. 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 6/237:45 pm
PDX
- SYD
2 stops22h 40m
Multiple Airlines
Sun 8/29:20 am
SYD
- PDX
1 stop17h 11m
Multiple Airlines
Deal found 5/24![Multiple Airlines logo]()
$1,086
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 May 25, 2026.
Search for one-way flight options from Portland to Sydney. Find affordable one-way fares based on user searches. Data last updated May 25, 2026.
This SmartFares deal was found by Cheapflights users on 5/22. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/27:00 am
PDX
- SYD
1 stop17h 45m
Multiple Airlines
Deal found 5/22![Multiple Airlines logo]()
$612
This Air Canada deal was found by Cheapflights users on 5/22. 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.
Sun 11/13:15 pm
PDX
- SYD
1 stop23h 20m
Air Canada
Deal found 5/22![Air Canada logo]()
$614
This Kiwi.com deal was found by Cheapflights users on 5/24. 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.
Sat 5/308:00 am
PDX
- SYD
1 stop17h 50m
Alaska Airlines
Deal found 5/24![Alaska Airlines logo]()
$641
This Expedia deal was found by Cheapflights users on 5/22. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/85:36 pm
PDX
- SYD
2 stops32h 34m
Multiple Airlines
Deal found 5/22![Multiple Airlines logo]()
$695
This United Airlines deal was found by Cheapflights users on 5/24. 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.
Sat 5/3011:59 pm
PDX
- SYD
2 stops38h 01m
United Airlines
Deal found 5/24![United Airlines logo]()
$696
This Delta deal was found by Cheapflights users on 5/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/86:33 am
PDX
- SYD
1 stop31h 17m
Delta
Deal found 5/22![Delta logo]()
$715
This Kiwi.com deal was found by Cheapflights users on 5/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/19:03 pm
PDX
- SYD
3 stops49h 32m
Multiple Airlines
Deal found 5/22![Multiple Airlines logo]()
$787
This Booking.com deal was found by Cheapflights users on 5/22. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/811:40 pm
PDX
- SYD
3 stops38h 40m
Air Canada
Deal found 5/22![Air Canada logo]()
$2,055
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 May 25, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,060 (Air Canada) |
One-way from | $612 (SmartFares) |
Popular in | December |
Cheapest in | September |
Average price | $1,148 |
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 May 25, 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 6/15
12:50 pm-6:55 am
2 stops25h 05m
Sydney Kingsford Smith
Tue 6/23
10:20 am-10:20 am
1 stop17h 00m
$1,159
PortlandSydney
PDX - SYD
PDXSYD
Portland
Wed 8/5
11:16 am-6:55 am
1 stop26h 39m
Sydney Kingsford Smith
Wed 8/19
10:20 am-10:11 am
1 stop16h 51m
$1,160
PortlandSydney
PDX - SYD
PDXSYD
Portland
Mon 8/10
7:00 am-7:00 am
2 stops31h 00m
Sydney Kingsford Smith
Wed 8/19
10:20 am-10:11 am
1 stop16h 51m
$1,164
PortlandSydney
PDX - SYD
PDXSYD
Portland
Wed 8/5
11:05 am-6:55 am
2 stops26h 50m
Sydney Kingsford Smith
Sun 8/16
9:30 am-3:03 pm
2 stops22h 33m
$1,164
PortlandSydney
PDX - SYD
PDXSYD
Portland
Sat 10/24
2:45 pm-10:20 am
2 stops25h 35m
Sydney Kingsford Smith
Wed 10/28
9:25 pm-8:50 pm
1 stop17h 25m
$1,253
PortlandSydney
PDX - SYD
PDXSYD
Portland
Fri 7/3
8:35 am-7:00 am
3 stops29h 25m
Sydney Kingsford Smith
Sun 7/19
9:30 am-3:13 pm
2 stops22h 43m
$1,280
Quickest round-trip
PortlandSydney
PDX - SYD
PDXSYD
Portland
Sat 7/25
7:46 am-6:50 pm
1 stop18h 04m
Sydney Kingsford Smith
Tue 7/28
8:45 pm-11:52 pm
2 stops20h 07m
$1,284
PortlandSydney
PDX - SYD
PDXSYD
Portland
Mon 7/20
1:25 pm-6:50 am
1 stop24h 25m
Sydney Kingsford Smith
Tue 8/11
9:15 am-4:34 pm
1 stop24h 19m
$1,291
PortlandSydney
PDX - SYD
PDXSYD
Portland
Mon 6/22
9:30 am-6:50 am
2 stops28h 20m
Sydney Kingsford Smith
Tue 6/30
9:15 am-4:19 pm
2 stops24h 04m
$1,296
PortlandSydney
PDX - SYD
PDXSYD
Portland
Tue 6/23
7:20 am-6:50 am
2 stops30h 30m
Sydney Kingsford Smith
Tue 6/30
9:15 am-4:19 pm
2 stops24h 04m
$1,296
Showing 1-10 of 17 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 May.
| 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 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
Prices
More
How far ahead should I book a flight from Portland to Sydney?
Booking 10 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 $981). Flying from Portland to Sydney in December is currently the most expensive (average of $1,781). 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?
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 33% 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 $1,055.
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 29m.
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 2h 47m.
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 May 25, 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.
Overall
7.9
Entertainment
7.0
Crew
8.5
Boarding
8.1
Food
7.0
Comfort
7.8
Reviews
1 / 20
8.0
ExcellentEugene,Mar 2026
MFR - SEA
Overall
7.9
Entertainment
7.0
Crew
8.5
Boarding
8.1
Food
7.0
Comfort
7.8
Reviews
1 / 20
8.0
ExcellentEugene,Mar 2026
MFR - SEA
Overall
7.9
Entertainment
7.0
Crew
8.5
Boarding
8.1
Food
7.0
Comfort
7.8
Reviews
1 / 20
8.0
ExcellentEugene,Mar 2026
MFR - SEA
Overall
7.9
Entertainment
7.0
Crew
8.5
Boarding
8.1
Food
7.0
Comfort
7.8
Reviews
1 / 20
8.0
ExcellentEugene,Mar 2026
MFR - SEA
Overall
7.9
Entertainment
7.0
Crew
8.5
Boarding
8.1
Food
7.0
Comfort
7.8
Reviews
1 / 20
8.0
ExcellentEugene,Mar 2026
MFR - SEA
Overall
7.9
Entertainment
7.0
Crew
8.5
Boarding
8.1
Food
7.0
Comfort
7.8
Reviews
1 / 20
8.0
ExcellentEugene,Mar 2026
MFR - SEA
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 May 25, 2026.
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Top 8 airlines flying from Portland to Sydney
Discover the top 8 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 May 25, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$229 | Average$1,259 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$550 | Average$1,154 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$877 | Average$1,239 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$886 | Average$1,163 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$906 | Average$1,152 | FlexibilityNo cancel fee | On-time74% | |
| Cheapest$954 | Average$974 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$999 | Average$1,176 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$1,140 | Average$1,250 | FlexibilityNo cancel fee | On-timeN/A |