$561+ 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 9/14. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — SYD
Sep 24 — Oct 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
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 Portland to Sydney
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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 August 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 August 25, 2026.
This Air Canada deal was found by Cheapflights users on 8/24. 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.
Sun 11/157:10 pm -
1 stop19h 25m
Sun 11/2211:20 am -
1 stop22h 21m
Deal found 8/24![Air Canada logo]()
$1,080
This SmartFares deal was found by Cheapflights users on 8/23. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/97:00 am -
1 stop17h 45m
Sun 11/159:40 pm -
1 stop18h 09m
Deal found 8/23![Multiple Airlines logo]()
$1,086
This Air Canada deal was found by Cheapflights users on 8/24. 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.
Sun 11/1510:00 am -
1 stop28h 35m
Sun 11/226:20 am -
2 stops22h 06m
Deal found 8/24![Multiple Airlines logo]()
$1,090
This Cheapflightsfares deal was found by Cheapflights users on 8/21. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/268:00 am -
1 stop17h 50m
Tue 9/88:45 pm -
1 stop26h 29m
Deal found 8/21![Alaska Airlines logo]()
$1,091
This Ovago deal was found by Cheapflights users on 8/22. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/167:00 am -
1 stop17h 45m
Tue 12/19:40 pm -
1 stop27h 20m
Deal found 8/22![Multiple Airlines logo]()
$1,096
This Hawaiian Airlines deal was found by Cheapflights users on 8/23. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/308:00 am -
1 stop17h 50m
Tue 10/208:45 pm -
1 stop27h 34m
Deal found 8/23![Alaska Airlines logo]()
$1,103
This Booking.com deal was found by Cheapflights users on 8/24. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/2510:30 am -
1 stop39h 20m
Tue 9/18:45 pm -
1 stop17h 01m
Deal found 8/24![Alaska Airlines logo]()
$1,105
This FlightHub deal was found by Cheapflights users on 8/23. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/265:53 pm -
2 stops35h 32m
Sun 10/182:15 pm -
2 stops27h 01m
Deal found 8/23![Multiple Airlines logo]()
$1,109
This Ovago deal was found by Cheapflights users on 8/22. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/155:50 pm -
1 stop30h 55m
Tue 12/19:40 pm -
1 stop27h 20m
Deal found 8/22![Alaska Airlines logo]()
$1,114
This Air Canada deal was found by Cheapflights users on 8/24. 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.
Wed 11/1110:00 am -
1 stop28h 35m
Fri 11/2711:20 am -
1 stop26h 11m
Deal found 8/24![Air Canada logo]()
$1,118
This Ovago deal was found by Cheapflights users on 8/22. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/610:30 am -
1 stop38h 20m
Tue 10/138:45 pm -
1 stop18h 05m
Deal found 8/22![Alaska Airlines logo]()
$1,119
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 August 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 August 25, 2026.
This Hawaiian Airlines deal was found by Cheapflights users on 8/23. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/268:00 am -
1 stop17h 50m
Tue 10/208:45 pm -
1 stop27h 34m
Deal found 8/23![Alaska Airlines logo]()
$1,153
This Alaska Airlines deal was found by Cheapflights users on 8/22. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/147:00 am -
1 stop17h 45m
Tue 12/19:40 pm -
2 stops30h 45m
Deal found 8/22![Multiple Airlines logo]()
$1,231
This Delta deal was found by Cheapflights users on 8/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/3112:25 pm -
2 stops25h 25m
Sun 9/139:15 am -
2 stops29h 47m
Deal found 8/20![Delta logo]()
$1,383
This United Airlines deal was found by Cheapflights users on 8/20. 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.
Thu 10/18:40 am -
2 stops29h 20m
Thu 10/810:30 am -
3 stops26h 01m
Deal found 8/20![United Airlines logo]()
$1,413
This Cathay Pacific deal was found by Cheapflights users on 8/23. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/318:18 pm -
2 stops40h 52m
Sun 9/139:55 pm -
2 stops41h 00m
Deal found 8/23![Cathay Pacific logo]()
$1,553
This Alaska Airlines deal was found by Cheapflights users on 8/23. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/308:00 am -
1 stop17h 50m
Sat 10/178:45 pm -
2 stops30h 46m
Deal found 8/23![Multiple Airlines logo]()
$1,240
This Delta deal was found by Cheapflights users on 8/21. 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.
Thu 10/110:47 am -
1 stop27h 03m
Thu 10/810:15 am -
1 stop26h 32m
Deal found 8/21![Delta logo]()
$1,409
This United Airlines deal was found by Cheapflights users on 8/21. 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 8/315:00 am -
2 stops33h 00m
Sun 9/139:30 am -
2 stops28h 35m
Deal found 8/21![United Airlines logo]()
$1,483
This United Airlines deal was found by Cheapflights users on 8/23. 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.
Tue 10/134:05 pm -
2 stops45h 55m
Sat 10/2410:30 am -
3 stops26h 01m
Deal found 8/23![United Airlines logo]()
$1,562
This Malaysia Airlines deal was found by Cheapflights users on 8/21. 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 Malaysia Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/22:34 pm -
3 stops46h 21m
Fri 11/610:15 pm -
3 stops44h 26m
Deal found 8/21![Multiple Airlines logo]()
$2,782
Last-minute flights from Portland to SydneyDiscover last-minute flight deals from Portland to Sydney. Data last updated August 25, 2026 and is based on user searches.
Discover last-minute flight deals from Portland to Sydney. Data last updated August 25, 2026 and is based on user searches.
This Booking.com deal was found by Cheapflights users on 8/24. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/2510:30 am -
1 stop39h 20m
Tue 9/18:45 pm -
1 stop17h 01m
Deal found 8/24![Alaska Airlines logo]()
$1,105
This Cheapflightsfares deal was found by Cheapflights users on 8/21. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/268:00 am -
1 stop17h 50m
Tue 9/88:45 pm -
1 stop26h 29m
Deal found 8/21![Alaska Airlines logo]()
$1,091
This Ovago deal was found by Cheapflights users on 8/22. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/268:00 am -
1 stop17h 50m
Fri 8/288:45 pm -
1 stop26h 29m
Deal found 8/22![Alaska Airlines logo]()
$1,131
This Ovago deal was found by Cheapflights users on 8/21. 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.
Thu 9/38:00 am -
1 stop17h 50m
Sun 9/208:45 pm -
1 stop26h 29m
Deal found 8/21![Alaska Airlines logo]()
$1,130
This Justfly.com deal was found by Cheapflights users on 8/21. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/83:30 pm -
2 stops26h 10m
Tue 9/159:20 am -
1 stop22h 26m
Deal found 8/21![Air Canada logo]()
$1,151
This FlightHub deal was found by Cheapflights users on 8/23. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/265:53 pm -
2 stops24h 57m
Fri 10/162:15 pm -
2 stops27h 01m
Deal found 8/23![Multiple Airlines logo]()
$1,109
This Hawaiian Airlines deal was found by Cheapflights users on 8/23. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2910:30 am -
1 stop39h 20m
Sun 10/188:45 pm -
1 stop27h 34m
Deal found 8/23![Alaska Airlines logo]()
$1,120
This Hawaiian Airlines deal was found by Cheapflights users on 8/23. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/308:00 am -
1 stop17h 50m
Tue 10/208:45 pm -
1 stop27h 34m
Deal found 8/23![Alaska Airlines logo]()
$1,103
This Hawaiian Airlines deal was found by Cheapflights users on 8/23. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/308:00 am -
1 stop17h 50m
Fri 10/168:45 pm -
1 stop27h 34m
Deal found 8/23![Alaska Airlines logo]()
$1,153
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 August 25, 2026.
Search for one-way flight options from Portland to Sydney. Find affordable one-way fares based on user searches. Data last updated August 25, 2026.
This SmartFares deal was found by Cheapflights users on 8/24. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/148:00 am -
1 stop17h 50m
Deal found 8/24![Alaska Airlines logo]()
$561
This SmartFares deal was found by Cheapflights users on 8/24. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/1310:30 am -
1 stop39h 20m
Deal found 8/24![Alaska Airlines logo]()
$584
This Kiwi.com deal was found by Cheapflights users on 8/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1211:06 am -
3 stops34h 44m
Deal found 8/21![Multiple Airlines logo]()
$591
This Cheapflightsfares deal was found by Cheapflights users on 8/24. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/15:50 pm -
1 stop30h 55m
Deal found 8/24![Alaska Airlines logo]()
$595
This Hawaiian Airlines deal was found by Cheapflights users on 8/24. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/1510:30 am -
1 stop39h 20m
Deal found 8/24![Alaska Airlines logo]()
$601
This Air Canada deal was found by Cheapflights users on 8/21. 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.
Tue 9/157:45 pm -
1 stop18h 35m
Deal found 8/21![Air Canada logo]()
$614
This FlightHub deal was found by Cheapflights users on 8/21. 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 -
2 stops25h 00m
Deal found 8/21![Multiple Airlines logo]()
$640
This FlightHub deal was found by Cheapflights users on 8/23. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/287:45 pm -
2 stops22h 55m
Deal found 8/23![Multiple Airlines logo]()
$643
This SmartFares deal was found by Cheapflights users on 8/20. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/3010:30 am -
1 stop39h 20m
Deal found 8/20![Alaska Airlines logo]()
$644
This FlightHub deal was found by Cheapflights users on 8/23. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/13:15 pm -
2 stops30h 25m
Deal found 8/23![Air Canada logo]()
$645
This Kiwi.com deal was found by Cheapflights users on 8/24. 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 9/1610:37 am -
2 stops27h 53m
Deal found 8/24![Multiple Airlines logo]()
$658
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 August 25, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,086 (SmartFares) |
One-way from | $561 (SmartFares) |
Popular in | December |
Cheapest in | September |
Average price | $1,205 |
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 7,457,451 searches. Data last updated August 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
Quickest round-trip
PortlandSydney
PDX Portland - SYD Sydney Kingsford Smith
PDXSYD
Portland
Sat 9/26
8:00 am-6:50 pm
1 stop17h 50m
Sydney Kingsford Smith
Tue 10/20
8:45 pm-6:19 am
1 stop27h 34m
$1,153
PortlandSydney
PDX Portland - SYD Sydney Kingsford Smith
PDXSYD
Portland
Sat 11/14
7:00 am-7:45 pm
1 stop17h 45m
Sydney Kingsford Smith
Tue 12/1
9:40 pm-9:25 am
2 stops30h 45m
$1,231
PortlandSydney
PDX Portland - SYD Sydney Kingsford Smith
PDXSYD
Portland
Wed 9/30
8:00 am-6:50 pm
1 stop17h 50m
Sydney Kingsford Smith
Sat 10/17
8:45 pm-9:31 am
2 stops30h 46m
$1,240
PortlandSydney
PDX Portland - SYD Sydney Kingsford Smith
PDXSYD
Portland
Mon 8/31
12:25 pm-6:50 am
2 stops25h 25m
Sydney Kingsford Smith
Sun 9/13
9:15 am-10:02 pm
2 stops29h 47m
$1,383
PortlandSydney
PDX Portland - SYD Sydney Kingsford Smith
PDXSYD
Portland
Thu 10/1
10:47 am-6:50 am
1 stop27h 03m
Sydney Kingsford Smith
Thu 10/8
10:15 am-6:47 pm
1 stop26h 32m
$1,409
PortlandSydney
PDX Portland - SYD Sydney Kingsford Smith
PDXSYD
Portland
Thu 10/1
8:40 am-7:00 am
2 stops29h 20m
Sydney Kingsford Smith
Thu 10/8
10:30 am-6:31 pm
3 stops26h 01m
$1,413
PortlandSydney
PDX Portland - SYD Sydney Kingsford Smith
PDXSYD
Portland
Mon 8/31
5:00 am-7:00 am
2 stops33h 00m
Sydney Kingsford Smith
Sun 9/13
9:30 am-9:05 pm
2 stops28h 35m
$1,483
PortlandSydney
PDX Portland - SYD Sydney Kingsford Smith
PDXSYD
Portland
Mon 8/31
8:18 pm-6:10 am
2 stops40h 52m
Sydney Kingsford Smith
Sun 9/13
9:55 pm-9:55 pm
2 stops41h 00m
$1,553
PortlandSydney
PDX Portland - SYD Sydney Kingsford Smith
PDXSYD
Portland
Tue 10/13
4:05 pm-8:00 am
2 stops45h 55m
Sydney Kingsford Smith
Sat 10/24
10:30 am-6:31 pm
3 stops26h 01m
$1,562
PortlandSydney
PDX Portland - SYD Sydney Kingsford Smith
PDXSYD
Portland
Mon 11/2
2:34 pm-7:55 am
3 stops46h 21m
Sydney Kingsford Smith
Fri 11/6
10:15 pm-11:41 pm
3 stops44h 26m
$2,782
Showing 1-10 of 16 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 August.
| 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
Prices
More
How far ahead should I book a flight from Portland to Sydney?
Booking 74 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 $1,070). Flying from Portland to Sydney in December is currently the most expensive (average of $1,819). 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 typical for this route at the moment.
Portland to Sydney flights typically cost between $1,062 and $1,247 in November.The cheapest round-trip price found within the last 5 days was $1,086 on Multiple Airlines (Nov 9-Nov 15).
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 August 25, 2026.
Peruse reviews from past customers who have flown with Alaska Airlines,Delta, andQantas Airways 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
Crew
8.5
Food
7.0
Entertainment
7.0
Overall
7.9
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentAnonymous,Nov 2025
PDX - BNA
Comfort
7.8
Crew
8.5
Food
7.0
Entertainment
7.0
Overall
7.9
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentAnonymous,Nov 2025
PDX - BNA
Comfort
7.8
Crew
8.5
Food
7.0
Entertainment
7.0
Overall
7.9
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentAnonymous,Nov 2025
PDX - BNA
Comfort
7.8
Crew
8.5
Food
7.0
Entertainment
7.0
Overall
7.9
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentAnonymous,Nov 2025
PDX - BNA
Comfort
7.8
Crew
8.5
Food
7.0
Entertainment
7.0
Overall
7.9
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentAnonymous,Nov 2025
PDX - BNA
Comfort
7.8
Crew
8.5
Food
7.0
Entertainment
7.0
Overall
7.9
Boarding
8.1
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 August 25, 2026.
Other flights from Portland
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Other flights to Sydney
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Top 6 airlines flying from Portland to Sydney
Discover the top 6 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 7,457,451 searches. Data last updated August 25, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$497 | Average$1,277 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$535 | Average$1,148 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$960 | Average$1,206 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$970 | Average$1,192 | FlexibilityNo cancel fee | On-time74% | |
| Cheapest$995 | Average$1,160 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$1,144 | Average$1,362 | FlexibilityNo cancel fee | On-time69% |