$563+ 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 8/8. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — SYD
Jun 6 — Jun 131
Round-trip
1 adult, Economy
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Find cheap flights from Portland to Sydney with Cheapflights
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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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Best
Last-minute
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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 May 7, 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 7, 2026.
This Travelocity deal was found by Cheapflights users on 5/6. 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.
Sun 5/103:30 pm
PDX
- SYD
1 stop22h 50m
Air Canada
Sun 5/249:20 am
SYD
- PDX
1 stop22h 25m
Air Canada
Deal found 5/6![Air Canada logo]()
$1,121
This FlightHub deal was found by Cheapflights users on 5/5. 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.
Wed 7/227:45 pm
PDX
- SYD
2 stops22h 55m
Air Canada
Mon 7/279:20 am
SYD
- PDX
1 stop22h 31m
Air Canada
Deal found 5/5![Air Canada logo]()
$1,129
This FlightHub deal was found by Cheapflights users on 5/5. 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 9/45:35 pm
PDX
- SYD
2 stops25h 15m
Multiple Airlines
Sun 9/131:15 pm
SYD
- PDX
2 stops25h 40m
Multiple Airlines
Deal found 5/5![Multiple Airlines logo]()
$1,136
This FlightHub deal was found by Cheapflights users on 5/5. 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.
Wed 8/192:50 pm
PDX
- SYD
2 stops28h 00m
Multiple Airlines
Wed 9/21:15 pm
SYD
- PDX
2 stops27h 09m
Multiple Airlines
Deal found 5/5![Multiple Airlines logo]()
$1,137
This Air Canada deal was found by Cheapflights users on 5/5. 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 7/227:45 pm
PDX
- SYD
2 stops22h 55m
Multiple Airlines
Mon 7/276:00 am
SYD
- PDX
2 stops20h 31m
Multiple Airlines
Deal found 5/5![Multiple Airlines logo]()
$1,139
This Air Canada deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/103:30 pm
PDX
- SYD
1 stop22h 50m
Multiple Airlines
Sun 5/246:00 am
SYD
- PDX
2 stops25h 45m
Multiple Airlines
Deal found 5/6![Multiple Airlines logo]()
$1,141
This FlightHub deal was found by Cheapflights users on 5/2. 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.
Thu 8/139:45 pm
PDX
- SYD
2 stops45h 05m
Multiple Airlines
Fri 8/211:15 pm
SYD
- PDX
2 stops24h 35m
Multiple Airlines
Deal found 5/2![Multiple Airlines logo]()
$1,144
This FlightHub deal was found by Cheapflights users on 5/6. 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 8/29:27 pm
PDX
- SYD
2 stops45h 23m
Multiple Airlines
Fri 8/211:15 pm
SYD
- PDX
2 stops26h 36m
Multiple Airlines
Deal found 5/6![Multiple Airlines logo]()
$1,145
This BusinessClass deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/15:35 pm
PDX
- SYD
2 stops25h 15m
Multiple Airlines
Thu 9/171:15 pm
SYD
- PDX
2 stops24h 21m
Multiple Airlines
Deal found 5/6![Multiple Airlines logo]()
$1,159
This United Airlines deal was found by Cheapflights users on 5/6. 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 7/221:14 pm
PDX
- SYD
1 stop24h 41m
United Airlines
Mon 7/2710:20 am
SYD
- PDX
1 stop23h 27m
United Airlines
Deal found 5/6![United Airlines logo]()
$1,160
This Delta deal was found by Cheapflights users on 5/6. 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 6/15:18 pm
PDX
- SYD
1 stop20h 32m
Delta
Wed 6/109:15 am
SYD
- PDX
1 stop20h 10m
Delta
Deal found 5/6![Delta logo]()
$1,161
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 7, 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 7, 2026.
This United Airlines deal was found by Cheapflights users on 5/6. 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 7/2212:50 pm
PDX
- SYD
2 stops25h 10m
United Airlines
Mon 7/279:30 am
SYD
- PDX
2 stops25h 16m
United Airlines
Deal found 5/6![United Airlines logo]()
$1,165
This Delta deal was found by Cheapflights users on 5/5. 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 5/275:18 pm
PDX
- SYD
1 stop20h 32m
Delta
Sun 6/79:15 am
SYD
- PDX
1 stop27h 09m
Delta
Deal found 5/5![Delta logo]()
$1,201
This Alaska Airlines deal was found by Cheapflights users on 5/5. 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 9/39:35 pm
PDX
- SYD
2 stops28h 15m
Multiple Airlines
Sun 9/208:45 pm
SYD
- PDX
1 stop17h 01m
Multiple Airlines
Deal found 5/5![Multiple Airlines logo]()
$1,362
This Qantas Airways deal was found by Cheapflights users on 5/4. 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 10/182:45 pm
PDX
- SYD
2 stops27h 40m
Qantas Airways
Wed 10/216:00 am
SYD
- PDX
2 stops28h 35m
Qantas Airways
Deal found 5/4![Qantas Airways logo]()
$1,502
This Delta deal was found by Cheapflights users on 5/5. 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.
Sat 5/235:51 pm
PDX
- SYD
2 stops43h 59m
Delta
Tue 6/29:15 am
SYD
- PDX
1 stop17h 42m
Delta
Deal found 5/5![Delta logo]()
$1,219
This United Airlines deal was found by Cheapflights users on 5/2. 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 8/138:40 am
PDX
- SYD
2 stops29h 15m
United Airlines
Fri 8/2110:20 am
SYD
- PDX
1 stop16h 52m
United Airlines
Deal found 5/2![United Airlines logo]()
$1,344
This United Airlines deal was found by Cheapflights users on 5/2. 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 10/612:45 pm
PDX
- SYD
2 stops25h 15m
United Airlines
Mon 10/1910:30 am
SYD
- PDX
3 stops25h 45m
United Airlines
Deal found 5/2![United Airlines logo]()
$1,414
This United Airlines deal was found by Cheapflights users on 5/4. 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 7/112:50 pm
PDX
- SYD
2 stops25h 10m
United Airlines
Thu 7/99:30 am
SYD
- PDX
2 stops30h 18m
United Airlines
Deal found 5/4![United Airlines logo]()
$1,414
This United Airlines deal was found by Cheapflights users on 5/2. 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 10/181:03 pm
PDX
- SYD
1 stop24h 52m
United Airlines
Wed 10/2111:20 am
SYD
- PDX
2 stops21h 45m
United Airlines
Deal found 5/2![United Airlines logo]()
$1,504
This United Airlines deal was found by Cheapflights users on 5/6. 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 10/1812:45 pm
PDX
- SYD
2 stops25h 10m
United Airlines
Mon 10/2610:20 am
SYD
- PDX
3 stops26h 11m
United Airlines
Deal found 5/6![United Airlines logo]()
$1,505
This United Airlines deal was found by Cheapflights users on 5/6. 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 10/112:45 pm
PDX
- SYD
2 stops25h 15m
United Airlines
Thu 10/810:30 am
SYD
- PDX
3 stops25h 45m
United Airlines
Deal found 5/6![United Airlines logo]()
$1,505
Last-minute flights from Portland to SydneyDiscover last-minute flight deals from Portland to Sydney. Data last updated May 7, 2026 and is based on user searches.
Discover last-minute flight deals from Portland to Sydney. Data last updated May 7, 2026 and is based on user searches.
This Travelocity deal was found by Cheapflights users on 5/6. 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.
Sun 5/103:30 pm
PDX
- SYD
1 stop22h 50m
Air Canada
Sun 5/249:20 am
SYD
- PDX
1 stop22h 25m
Air Canada
Deal found 5/6![Air Canada logo]()
$1,121
This FlightHub deal was found by Cheapflights users on 5/6. 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 5/102:50 pm
PDX
- SYD
2 stops28h 00m
Multiple Airlines
Sun 5/241:15 pm
SYD
- PDX
2 stops24h 20m
Multiple Airlines
Deal found 5/6![Multiple Airlines logo]()
$1,136
This BusinessClass deal was found by Cheapflights users on 5/3. 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.
Sun 5/102:50 pm
PDX
- SYD
2 stops28h 00m
Multiple Airlines
Sun 5/171:15 pm
SYD
- PDX
2 stops39h 18m
Multiple Airlines
Deal found 5/3![Multiple Airlines logo]()
$1,167
This Delta deal was found by Cheapflights users on 5/3. 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 5/1010:52 am
PDX
- SYD
1 stop26h 58m
Delta
Sun 5/179:15 am
SYD
- PDX
1 stop20h 21m
Delta
Deal found 5/3![Delta logo]()
$1,200
This Delta deal was found by Cheapflights users on 5/5. 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.
Sat 5/235:51 pm
PDX
- SYD
2 stops43h 59m
Delta
Tue 6/29:15 am
SYD
- PDX
1 stop17h 42m
Delta
Deal found 5/5![Delta logo]()
$1,219
This Delta deal was found by Cheapflights users on 5/5. 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 5/245:18 pm
PDX
- SYD
1 stop20h 32m
Delta
Tue 6/29:15 am
SYD
- PDX
1 stop20h 21m
Delta
Deal found 5/5![Delta logo]()
$1,201
This Delta deal was found by Cheapflights users on 5/6. 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 6/15:18 pm
PDX
- SYD
1 stop20h 32m
Delta
Wed 6/109:15 am
SYD
- PDX
1 stop20h 10m
Delta
Deal found 5/6![Delta logo]()
$1,161
This Bravofly deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Bravofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/15:40 pm
PDX
- SYD
1 stop20h 25m
Qantas Airways
Mon 6/89:10 am
SYD
- PDX
1 stop30h 17m
Qantas Airways
Deal found 5/4![Qantas Airways logo]()
$1,166
This oojo deal was found by Cheapflights users on 5/4. 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.
Tue 6/23:27 pm
PDX
- SYD
1 stop22h 38m
Qantas Airways
Tue 6/99:10 am
SYD
- PDX
1 stop21h 21m
Qantas Airways
Deal found 5/4![Qantas Airways logo]()
$1,171
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 7, 2026.
Search for one-way flight options from Portland to Sydney. Find affordable one-way fares based on user searches. Data last updated May 7, 2026.
This Kiwi.com deal was found by Cheapflights users on 5/2. 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 8/85:42 pm
PDX
- SYD
2 stops25h 08m
Multiple Airlines
Deal found 5/2![Multiple Airlines logo]()
$563
This Travelocity deal was found by Cheapflights users on 5/6. 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.
Sun 10/257:10 pm
PDX
- SYD
1 stop19h 25m
Air Canada
Deal found 5/6![Air Canada logo]()
$614
This FlightHub deal was found by Cheapflights users on 5/6. 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 10/257:10 pm
PDX
- SYD
2 stops33h 00m
Multiple Airlines
Deal found 5/6![Multiple Airlines logo]()
$640
This Kiwi.com deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/237:15 am
PDX
- SYD
3 stops57h 40m
Multiple Airlines
Deal found 5/6![Multiple Airlines logo]()
$2,593
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 7, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,129 (FlightHub) |
One-way from | $563 (Kiwi.com) |
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 7, 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
Wed 7/22
12:50 pm-7:00 am
2 stops25h 10m
Sydney Kingsford Smith
Mon 7/27
9:30 am-5:46 pm
2 stops25h 16m
$1,165
PortlandSydney
PDX - SYD
PDXSYD
Portland
Wed 5/27
5:18 pm-6:50 am
1 stop20h 32m
Sydney Kingsford Smith
Sun 6/7
9:15 am-7:24 pm
1 stop27h 09m
$1,201
PortlandSydney
PDX - SYD
PDXSYD
Portland
Sat 5/23
5:51 pm-6:50 am
2 stops43h 59m
Sydney Kingsford Smith
Tue 6/2
9:15 am-9:57 am
1 stop17h 42m
$1,219
PortlandSydney
PDX - SYD
PDXSYD
Portland
Thu 8/13
8:40 am-6:55 am
2 stops29h 15m
Sydney Kingsford Smith
Fri 8/21
10:20 am-10:12 am
1 stop16h 52m
$1,344
Quickest round-trip
PortlandSydney
PDX - SYD
PDXSYD
Portland
Thu 9/3
9:35 pm-6:50 pm
2 stops28h 15m
Sydney Kingsford Smith
Sun 9/20
8:45 pm-8:46 pm
1 stop17h 01m
$1,362
PortlandSydney
PDX - SYD
PDXSYD
Portland
Tue 10/6
12:45 pm-8:00 am
2 stops25h 15m
Sydney Kingsford Smith
Mon 10/19
10:30 am-6:15 pm
3 stops25h 45m
$1,414
PortlandSydney
PDX - SYD
PDXSYD
Portland
Wed 7/1
12:50 pm-7:00 am
2 stops25h 10m
Sydney Kingsford Smith
Thu 7/9
9:30 am-10:48 pm
2 stops30h 18m
$1,414
PortlandSydney
PDX - SYD
PDXSYD
Portland
Sun 10/18
2:45 pm-12:25 pm
2 stops27h 40m
Sydney Kingsford Smith
Wed 10/21
6:00 am-4:35 pm
2 stops28h 35m
$1,502
PortlandSydney
PDX - SYD
PDXSYD
Portland
Sun 10/18
1:03 pm-7:55 am
1 stop24h 52m
Sydney Kingsford Smith
Wed 10/21
11:20 am-3:05 pm
2 stops21h 45m
$1,504
PortlandSydney
PDX - SYD
PDXSYD
Portland
Sun 10/18
12:45 pm-7:55 am
2 stops25h 10m
Sydney Kingsford Smith
Mon 10/26
10:20 am-6:31 pm
3 stops26h 11m
$1,505
Showing 1-10 of 14 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 $1,008). 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 7, 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.
Boarding
8.1
Overall
7.9
Comfort
7.8
Crew
8.5
Entertainment
7.0
Food
7.1
Reviews
1 / 20
8.0
ExcellentEugene,Mar 2026
MFR - SEA
Boarding
8.1
Overall
7.9
Comfort
7.8
Crew
8.5
Entertainment
7.0
Food
7.1
Reviews
1 / 20
8.0
ExcellentEugene,Mar 2026
MFR - SEA
Boarding
8.1
Overall
7.9
Comfort
7.8
Crew
8.5
Entertainment
7.0
Food
7.1
Reviews
1 / 20
8.0
ExcellentEugene,Mar 2026
MFR - SEA
Boarding
8.1
Overall
7.9
Comfort
7.8
Crew
8.5
Entertainment
7.0
Food
7.1
Reviews
1 / 20
8.0
ExcellentEugene,Mar 2026
MFR - SEA
Boarding
8.1
Overall
7.9
Comfort
7.8
Crew
8.5
Entertainment
7.0
Food
7.1
Reviews
1 / 20
8.0
ExcellentEugene,Mar 2026
MFR - SEA
Boarding
8.1
Overall
7.9
Comfort
7.8
Crew
8.5
Entertainment
7.0
Food
7.1
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 7, 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 May 7, 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 7, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$229 | Average$1,259 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$550 | Average$1,157 | 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$984 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$999 | Average$1,160 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$1,140 | Average$1,236 | FlexibilityNo cancel fee | On-timeN/A |