$528+ Cheap flights from Portland (PDX) to Sydney (SYD)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/10. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — SYD
Nov 17 — Nov 241
Round-trip
1 adult, Economy
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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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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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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 October 18, 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 October 18, 2026.
This FlightHub deal was found by Cheapflights users on 10/13. 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 11/145:04 pm -
2 stops24h 31m
Thu 11/266:00 am -
2 stops31h 54m
Deal found 10/13![Multiple Airlines logo]()
$1,107
This Expedia deal was found by Cheapflights users on 10/17. 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.
Mon 10/195:18 pm -
1 stop20h 12m
Tue 10/279:40 pm -
1 stop26h 39m
Deal found 10/17![Multiple Airlines logo]()
$1,116
This Expedia deal was found by Cheapflights users on 10/17. 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.
Sat 11/1412:04 pm -
2 stops23h 21m
Sat 11/219:40 pm -
2 stops27h 28m
Deal found 10/17![Multiple Airlines logo]()
$1,155
This Ovago deal was found by Cheapflights users on 10/13. 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 11/127:00 am -
1 stop17h 45m
Thu 11/199:40 pm -
1 stop18h 09m
Deal found 10/13![Multiple Airlines logo]()
$1,167
This Expedia deal was found by Cheapflights users on 10/18. 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.
Sun 11/159:46 am -
1 stop25h 39m
Sun 11/229:40 pm -
1 stop27h 24m
Deal found 10/18![Multiple Airlines logo]()
$1,177
This Kiwi.com deal was found by Cheapflights users on 10/14. 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 11/12:48 pm -
1 stop20h 37m
Sun 11/152:00 pm -
2 stops39h 11m
Deal found 10/14![Multiple Airlines logo]()
$1,178
This Travelocity deal was found by Cheapflights users on 10/14. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/225:18 pm -
1 stop20h 12m
Fri 10/309:40 pm -
1 stop26h 39m
Deal found 10/14![Multiple Airlines logo]()
$1,181
This Aunt Betty deal was found by Cheapflights users on 10/17. 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.
Mon 10/199:30 pm -
1 stop40h 00m
Tue 10/2711:15 am -
2 stops21h 51m
Deal found 10/17![Alaska Airlines logo]()
$1,187
This Delta deal was found by Cheapflights users on 10/14. 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 11/99:16 am -
2 stops28h 14m
Sat 11/2110:40 am -
2 stops27h 15m
Deal found 10/14![Delta logo]()
$1,192
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 October 18, 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 October 18, 2026.
This Alaska Airlines deal was found by Cheapflights users on 10/17. 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.
Tue 2/235:50 pm -
1 stop30h 55m
Tue 3/169:40 pm -
2 stops26h 26m
Deal found 10/17![Multiple Airlines logo]()
$1,146
This Alaska Airlines deal was found by Cheapflights users on 10/15. 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 4/142:30 pm -
1 stop23h 00m
Thu 4/2910:20 am -
2 stops23h 17m
Deal found 10/15![Alaska Airlines logo]()
$1,164
This Delta deal was found by Cheapflights users on 10/14. 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 11/99:16 am -
2 stops28h 14m
Sat 11/2110:40 am -
2 stops27h 15m
Deal found 10/14![Delta logo]()
$1,192
This Alaska Airlines deal was found by Cheapflights users on 10/17. 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.
Thu 10/297:15 am -
1 stop29h 10m
Wed 11/119:25 pm -
1 stop31h 03m
Deal found 10/17![Alaska Airlines logo]()
$1,213
This Air Tahiti Nui deal was found by Cheapflights users on 10/16. 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.
Tue 2/2310:30 am -
3 stops36h 10m
Tue 3/168:20 pm -
2 stops40h 32m
Deal found 10/16![Air Tahiti Nui logo]()
$2,465
This Alaska Airlines deal was found by Cheapflights users on 10/16. 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.
Thu 3/117:00 am -
1 stop28h 25m
Sat 3/1311:15 am -
1 stop24h 12m
Deal found 10/16![Alaska Airlines logo]()
$1,231
This United Airlines deal was found by Cheapflights users on 10/13. 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 12/208:46 am -
1 stop29h 34m
Fri 1/111:50 am -
1 stop31h 57m
Deal found 10/13![United Airlines logo]()
$2,870
This Air Tahiti Nui deal was found by Cheapflights users on 10/16. 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 2/139:30 pm -
2 stops49h 15m
Sun 2/218:55 am -
3 stops30h 36m
Deal found 10/16![Multiple Airlines logo]()
$2,350
This Malaysia Airlines deal was found by Cheapflights users on 10/17. 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.
Sat 11/142:34 pm -
3 stops46h 21m
Sat 11/2110:15 pm -
3 stops43h 06m
Deal found 10/17![Multiple Airlines logo]()
$2,846
This Air Tahiti Nui deal was found by Cheapflights users on 10/17. 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.
Mon 12/149:27 pm -
3 stops49h 13m
Tue 12/228:20 pm -
2 stops38h 13m
Deal found 10/17![Multiple Airlines logo]()
$3,351
Last-minute flights from Portland to SydneyDiscover last-minute flight deals from Portland to Sydney. Data last updated October 18, 2026 and is based on user searches.
Discover last-minute flight deals from Portland to Sydney. Data last updated October 18, 2026 and is based on user searches.
This Expedia deal was found by Cheapflights users on 10/17. 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.
Mon 10/195:18 pm -
1 stop20h 12m
Tue 10/279:40 pm -
1 stop26h 39m
Deal found 10/17![Multiple Airlines logo]()
$1,116
This Aunt Betty deal was found by Cheapflights users on 10/17. 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.
Mon 10/199:30 pm -
1 stop40h 00m
Tue 10/2711:15 am -
2 stops21h 51m
Deal found 10/17![Alaska Airlines logo]()
$1,187
This Travelocity deal was found by Cheapflights users on 10/14. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/225:18 pm -
1 stop20h 12m
Fri 10/309:40 pm -
1 stop26h 39m
Deal found 10/14![Multiple Airlines logo]()
$1,181
This Kiwi.com deal was found by Cheapflights users on 10/14. 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 11/12:48 pm -
1 stop20h 37m
Sun 11/152:00 pm -
2 stops39h 11m
Deal found 10/14![Multiple Airlines logo]()
$1,178
This Delta deal was found by Cheapflights users on 10/14. 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 11/99:16 am -
2 stops28h 14m
Sat 11/2110:40 am -
2 stops27h 15m
Deal found 10/14![Delta logo]()
$1,192
This Ovago deal was found by Cheapflights users on 10/13. 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 11/127:00 am -
1 stop17h 45m
Thu 11/199:40 pm -
1 stop18h 09m
Deal found 10/13![Multiple Airlines logo]()
$1,167
This FlightHub deal was found by Cheapflights users on 10/13. 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 11/145:04 pm -
2 stops24h 31m
Thu 11/266:00 am -
2 stops31h 54m
Deal found 10/13![Multiple Airlines logo]()
$1,107
This Expedia deal was found by Cheapflights users on 10/17. 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.
Sat 11/141:35 pm -
1 stop21h 50m
Sat 11/219:40 pm -
1 stop27h 24m
Deal found 10/17![Multiple Airlines logo]()
$1,155
This Expedia deal was found by Cheapflights users on 10/18. 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.
Sun 11/159:46 am -
1 stop25h 39m
Sun 11/229:40 pm -
1 stop27h 24m
Deal found 10/18![Multiple Airlines logo]()
$1,177
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 October 18, 2026.
Search for one-way flight options from Portland to Sydney. Find affordable one-way fares based on user searches. Data last updated October 18, 2026.
This Alaska Airlines deal was found by Cheapflights users on 10/18. 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.
Thu 12/109:00 am -
1 stop26h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/18![Alaska Airlines logo]()
$528
This Expedia deal was found by Cheapflights users on 10/15. 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.
Tue 3/91:30 pm -
1 stop21h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/15![Alaska Airlines logo]()
$534
This Alaska Airlines deal was found by Cheapflights users on 10/18. 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 11/159:46 am -
1 stop25h 39m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/18![Alaska Airlines logo]()
$550
This Expedia deal was found by Cheapflights users on 10/17. 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.
Mon 11/168:28 pm -
1 stop38h 57m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/17![Alaska Airlines logo]()
$565
This Delta deal was found by Cheapflights users on 10/14. 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.
Sun 11/17:02 pm -
1 stop18h 28m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/14![Delta logo]()
$592
This oojo deal was found by Cheapflights users on 10/16. 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 11/17:04 am -
1 stop28h 21m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/16![Multiple Airlines logo]()
$629
This Kiwi.com deal was found by Cheapflights users on 10/15. 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 3/97:15 am -
3 stops32h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/15![Multiple Airlines logo]()
$637
This American Airlines deal was found by Cheapflights users on 10/18. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/152:24 pm -
2 stops23h 36m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/18![American Airlines logo]()
$639
This United Airlines deal was found by Cheapflights users on 10/16. 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 11/11:15 pm -
2 stops24h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/16![United Airlines logo]()
$641
This FlightHub deal was found by Cheapflights users on 10/17. 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 11/166:04 pm -
2 stops23h 31m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/17![Multiple Airlines logo]()
$647
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 October 18, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,106 (FlightHub) |
One-way from | $528 (Alaska Airlines) |
Popular in | December |
Cheapest in | September |
Average price | $1,212 |
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 October 18, 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
Thu 12/10
12:06 pm-6:25 am
2 stops23h 19m
Sydney Kingsford Smith
Wed 12/31
12:00 am-6:00 am
Nonstop0h 00m
$528
PortlandSydney
PDX Portland - SYD Sydney Kingsford Smith
PDXSYD
Portland
Sun 11/15
9:46 am-6:25 am
1 stop25h 39m
Sydney Kingsford Smith
Wed 12/31
12:00 am-6:00 am
Nonstop0h 00m
$550
PortlandSydney
PDX Portland - SYD Sydney Kingsford Smith
PDXSYD
Portland
Tue 3/9
8:30 am-6:25 am
1 stop26h 55m
Sydney Kingsford Smith
Wed 12/31
12:00 am-6:00 am
Nonstop0h 00m
$551
PortlandSydney
PDX Portland - SYD Sydney Kingsford Smith
PDXSYD
Portland
Sun 11/1
11:25 am-8:30 am
2 stops26h 05m
Sydney Kingsford Smith
Wed 12/31
12:00 am-6:00 am
Nonstop0h 00m
$592
PortlandSydney
PDX Portland - SYD Sydney Kingsford Smith
PDXSYD
Portland
Sun 11/1
1:15 pm-9:05 am
2 stops24h 50m
Sydney Kingsford Smith
Wed 12/31
12:00 am-6:00 am
Nonstop0h 00m
$641
PortlandSydney
PDX Portland - SYD Sydney Kingsford Smith
PDXSYD
Portland
Thu 12/31
10:30 am-6:25 am
1 stop24h 55m
Sydney Kingsford Smith
Wed 12/31
12:00 am-6:00 am
Nonstop0h 00m
$655
PortlandSydney
PDX Portland - SYD Sydney Kingsford Smith
PDXSYD
Portland
Tue 2/23
5:50 pm-7:45 pm
1 stop30h 55m
Sydney Kingsford Smith
Tue 3/16
9:40 pm-6:06 am
2 stops26h 26m
$1,146
PortlandSydney
PDX Portland - SYD Sydney Kingsford Smith
PDXSYD
Portland
Wed 4/14
2:30 pm-6:30 am
1 stop23h 00m
Sydney Kingsford Smith
Thu 4/29
10:20 am-4:37 pm
2 stops23h 17m
$1,164
PortlandSydney
PDX Portland - SYD Sydney Kingsford Smith
PDXSYD
Portland
Mon 11/9
9:16 am-8:30 am
2 stops28h 14m
Sydney Kingsford Smith
Sat 11/21
10:40 am-6:55 pm
2 stops27h 15m
$1,192
PortlandSydney
PDX Portland - SYD Sydney Kingsford Smith
PDXSYD
Portland
Thu 10/29
7:15 am-6:25 am
1 stop29h 10m
Sydney Kingsford Smith
Wed 11/11
9:25 pm-9:28 am
1 stop31h 03m
$1,213
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 October.
| 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 $1,840). 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 $1,076 and $1,323 in February.The cheapest round-trip price found within the last 5 days was $1,106 on Multiple Airlines (Feb 23-Mar 16).
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 67% 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.
Los Angeles (LAX) is the most affordable 1-stop option, with an average round-trip price of $1,301.
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 Los Angeles (LAX) have the shortest average one-way travel time for 1-stop routes: 20h 12m.
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 Los Angeles (LAX) offer the fastest connection on this route, with an average layover time of 3h 35m.
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 October 18, 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.
Boarding
8.1
Food
7.0
Crew
8.5
Entertainment
7.0
Comfort
7.8
Overall
7.9
Reviews
1 / 20
8.0
ExcellentAnonymous,Nov 2025
PDX - BNA
Boarding
8.1
Food
7.0
Crew
8.5
Entertainment
7.0
Comfort
7.8
Overall
7.9
Reviews
1 / 20
8.0
ExcellentAnonymous,Nov 2025
PDX - BNA
Boarding
8.1
Food
7.0
Crew
8.5
Entertainment
7.0
Comfort
7.8
Overall
7.9
Reviews
1 / 20
8.0
ExcellentAnonymous,Nov 2025
PDX - BNA
Boarding
8.1
Food
7.0
Crew
8.5
Entertainment
7.0
Comfort
7.8
Overall
7.9
Reviews
1 / 20
8.0
ExcellentAnonymous,Nov 2025
PDX - BNA
Boarding
8.1
Food
7.0
Crew
8.5
Entertainment
7.0
Comfort
7.8
Overall
7.9
Reviews
1 / 20
8.0
ExcellentAnonymous,Nov 2025
PDX - BNA
Boarding
8.1
Food
7.0
Crew
8.5
Entertainment
7.0
Comfort
7.8
Overall
7.9
Reviews
1 / 20
8.0
ExcellentAnonymous,Nov 2025
PDX - BNA
Related info for your journey
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Top 5 airlines flying from Portland to Sydney
Discover the top 5 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 October 18, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$222 | Average$1,211 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$901 | Average$1,300 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$960 | Average$1,165 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$1,076 | Average$1,212 | FlexibilityNo cancel fee | On-time74% | |
| Cheapest$1,159 | Average$1,409 | FlexibilityNo cancel fee | On-time69% |