$630+ 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 7/3. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — SYD
Jun 29 — Jul 61
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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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 30, 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 30, 2026.
This Vliegwinkel deal was found by Cheapflights users on 5/26. 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 Vliegwinkel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/313:30 pm
PDX
- SYD
1 stop22h 50m
Air Canada
Sun 6/149:20 am
SYD
- PDX
1 stop17h 10m
Air Canada
Deal found 5/26![Air Canada logo]()
$1,028
This Air Canada deal was found by Cheapflights users on 5/30. 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 6/2310:10 am
PDX
- SYD
1 stop28h 10m
Air Canada
Sun 8/29:20 am
SYD
- PDX
1 stop22h 31m
Air Canada
Deal found 5/30![Air Canada logo]()
$1,060
This Expedia deal was found by Cheapflights users on 5/28. 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 7/275:37 pm
PDX
- SYD
1 stop20h 28m
Multiple Airlines
Tue 8/49:10 am
SYD
- PDX
1 stop21h 34m
Multiple Airlines
Deal found 5/28![Multiple Airlines logo]()
$1,062
This Expedia deal was found by Cheapflights users on 5/27. 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 8/37:00 am
PDX
- SYD
1 stop31h 30m
Multiple Airlines
Mon 8/249:10 am
SYD
- PDX
1 stop18h 40m
Multiple Airlines
Deal found 5/27![Multiple Airlines logo]()
$1,071
This Expedia deal was found by Cheapflights users on 5/30. 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 8/115:37 pm
PDX
- SYD
1 stop20h 28m
Multiple Airlines
Tue 9/15:50 pm
SYD
- PDX
1 stop20h 00m
Multiple Airlines
Deal found 5/30![Multiple Airlines logo]()
$1,074
This Air Canada deal was found by Cheapflights users on 5/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/63:30 pm
PDX
- SYD
1 stop22h 50m
Multiple Airlines
Mon 10/196:00 am
SYD
- PDX
2 stops21h 31m
Multiple Airlines
Deal found 5/29![Multiple Airlines logo]()
$1,080
This Expedia deal was found by Cheapflights users on 5/27. 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 7/259:45 pm
PDX
- SYD
1 stop39h 40m
Multiple Airlines
Mon 8/109:10 am
SYD
- PDX
1 stop24h 37m
Multiple Airlines
Deal found 5/27![Multiple Airlines logo]()
$1,081
This Expedia deal was found by Cheapflights users on 5/28. 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 8/89:27 pm
PDX
- SYD
1 stop41h 03m
Multiple Airlines
Tue 8/189:25 pm
SYD
- PDX
1 stop19h 27m
Multiple Airlines
Deal found 5/28![Multiple Airlines logo]()
$1,084
This Expedia deal was found by Cheapflights users on 5/29. 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 6/223:27 pm
PDX
- SYD
1 stop22h 38m
Qantas Airways
Tue 7/219:25 pm
SYD
- PDX
1 stop19h 27m
Qantas Airways
Deal found 5/29![Qantas Airways logo]()
$1,086
This FlightHub deal was found by Cheapflights users on 5/27. 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 10/187:45 pm
PDX
- SYD
2 stops21h 55m
Multiple Airlines
Sun 10/2510:20 am
SYD
- PDX
1 stop17h 06m
Multiple Airlines
Deal found 5/27![Multiple Airlines logo]()
$1,087
This FlightHub deal was found by Cheapflights users on 5/29. 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 11/217:10 pm
PDX
- SYD
2 stops26h 30m
Multiple Airlines
Sun 11/2911:20 am
SYD
- PDX
1 stop17h 06m
Multiple Airlines
Deal found 5/29![Multiple Airlines logo]()
$1,088
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 30, 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 30, 2026.
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/295:00 am
PDX
- SYD
2 stops33h 00m
United Airlines
Sun 8/210:20 am
SYD
- PDX
1 stop17h 00m
United Airlines
Deal found 5/25![United Airlines logo]()
$1,164
This Hawaiian Airlines 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/297:46 am
PDX
- SYD
1 stop18h 04m
Alaska Airlines
Thu 7/308:45 pm
SYD
- PDX
1 stop26h 26m
Alaska Airlines
Deal found 5/25![Alaska Airlines logo]()
$1,182
This Alaska Airlines deal was found by Cheapflights users on 5/29. 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 7/19:45 pm
PDX
- SYD
2 stops28h 05m
Multiple Airlines
Thu 7/98:45 pm
SYD
- PDX
1 stop17h 05m
Multiple Airlines
Deal found 5/29![Multiple Airlines logo]()
$1,285
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/93:30 pm
PDX
- SYD
2 stops22h 35m
American Airlines
Mon 6/159:10 am
SYD
- PDX
2 stops24h 32m
American Airlines
Deal found 5/25![American Airlines logo]()
$1,293
This Delta deal was found by Cheapflights users on 5/30. 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 6/2312:23 pm
PDX
- SYD
2 stops25h 27m
Delta
Sun 8/29:15 am
SYD
- PDX
2 stops31h 39m
Delta
Deal found 5/30![Delta logo]()
$1,296
This United Airlines deal was found by Cheapflights users on 5/27. 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 8/1012:50 pm
PDX
- SYD
2 stops25h 10m
United Airlines
Wed 8/269:30 am
SYD
- PDX
2 stops25h 19m
United Airlines
Deal found 5/27![United Airlines logo]()
$1,165
This United Airlines deal was found by Cheapflights users on 5/28. 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 8/811:59 pm
PDX
- SYD
2 stops37h 56m
United Airlines
Tue 8/189:30 am
SYD
- PDX
2 stops25h 20m
United Airlines
Deal found 5/28![United Airlines logo]()
$1,165
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/195:30 am
PDX
- SYD
2 stops32h 20m
Delta
Tue 8/49:15 am
SYD
- PDX
2 stops31h 41m
Delta
Deal found 5/25![Delta logo]()
$1,316
This Alaska Airlines deal was found by Cheapflights users on 5/29. 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 7/37:46 am
PDX
- SYD
1 stop18h 04m
Multiple Airlines
Tue 12/89:40 pm
SYD
- PDX
2 stops21h 14m
Multiple Airlines
Deal found 5/29![Multiple Airlines logo]()
$1,393
This United Airlines deal was found by Cheapflights users on 5/27. 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 7/286:03 pm
PDX
- SYD
1 stop19h 52m
United Airlines
Sat 8/810:20 am
SYD
- PDX
1 stop17h 00m
United Airlines
Deal found 5/27![United Airlines logo]()
$1,276
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/26:03 pm
PDX
- SYD
1 stop19h 52m
United Airlines
Tue 7/289:30 am
SYD
- PDX
2 stops25h 14m
United Airlines
Deal found 5/25![United Airlines logo]()
$1,280
This United Airlines deal was found by Cheapflights users on 5/28. 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 7/311:05 am
PDX
- SYD
2 stops26h 55m
United Airlines
Sun 7/199:30 am
SYD
- PDX
2 stops30h 18m
United Airlines
Deal found 5/28![United Airlines logo]()
$1,281
Last-minute flights from Portland to SydneyDiscover last-minute flight deals from Portland to Sydney. Data last updated May 30, 2026 and is based on user searches.
Discover last-minute flight deals from Portland to Sydney. Data last updated May 30, 2026 and is based on user searches.
This Vliegwinkel deal was found by Cheapflights users on 5/26. 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 Vliegwinkel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/313:30 pm
PDX
- SYD
1 stop22h 50m
Air Canada
Sun 6/149:20 am
SYD
- PDX
1 stop17h 10m
Air Canada
Deal found 5/26![Air Canada logo]()
$1,028
This Flysmarter deal was found by Cheapflights users on 5/26. 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 Flysmarter is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/313:30 pm
PDX
- SYD
2 stops26h 25m
Multiple Airlines
Sun 6/149:20 am
SYD
- PDX
1 stop17h 10m
Multiple Airlines
Deal found 5/26![Multiple Airlines logo]()
$1,080
This Expedia deal was found by Cheapflights users on 5/29. 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 6/223:27 pm
PDX
- SYD
1 stop22h 38m
Qantas Airways
Tue 7/219:25 pm
SYD
- PDX
1 stop19h 27m
Qantas Airways
Deal found 5/29![Qantas Airways logo]()
$1,086
This Air Canada deal was found by Cheapflights users on 5/29. 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
2 stops22h 40m
Multiple Airlines
Tue 7/216:00 am
SYD
- PDX
2 stops20h 31m
Multiple Airlines
Deal found 5/29![Multiple Airlines logo]()
$1,096
This BusinessClass deal was found by Cheapflights users on 5/29. 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 5/29![Alaska Airlines logo]()
$1,141
This Air Canada deal was found by Cheapflights users on 5/30. 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 6/2310:10 am
PDX
- SYD
1 stop28h 10m
Air Canada
Sun 8/29:20 am
SYD
- PDX
1 stop22h 31m
Air Canada
Deal found 5/30![Air Canada logo]()
$1,060
This Air Canada deal was found by Cheapflights users on 5/28. 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
Multiple Airlines
Sat 7/118:15 pm
SYD
- PDX
2 stops30h 16m
Multiple Airlines
Deal found 5/28![Multiple Airlines logo]()
$1,088
This Hawaiian Airlines 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/297:46 am
PDX
- SYD
1 stop18h 04m
Alaska Airlines
Sun 8/28:45 pm
SYD
- PDX
1 stop26h 26m
Alaska Airlines
Deal found 5/25![Alaska Airlines logo]()
$1,147
This SmartFares deal was found by Cheapflights users on 5/29. 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.
Tue 6/3010:30 am
PDX
- SYD
1 stop39h 20m
Alaska Airlines
Wed 12/239:40 pm
SYD
- PDX
1 stop18h 10m
Alaska Airlines
Deal found 5/29![Alaska Airlines logo]()
$1,125
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 30, 2026.
Search for one-way flight options from Portland to Sydney. Find affordable one-way fares based on user searches. Data last updated May 30, 2026.
This SmartFares deal was found by Cheapflights users on 5/29. 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.
Fri 7/37:46 am
PDX
- SYD
1 stop18h 04m
Alaska Airlines
Deal found 5/29![Alaska Airlines logo]()
$630
This Expedia deal was found by Cheapflights users on 5/28. 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 7/272:39 pm
PDX
- SYD
2 stops35h 31m
Multiple Airlines
Deal found 5/28![Multiple Airlines logo]()
$632
This Expedia deal was found by Cheapflights users on 5/27. 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 7/48:35 am
PDX
- SYD
2 stops41h 35m
ANA
Deal found 5/27![ANA logo]()
$644
This Expedia deal was found by Cheapflights users on 5/27. 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 7/47:20 am
PDX
- SYD
1 stop30h 45m
Multiple Airlines
Deal found 5/27![Multiple Airlines logo]()
$657
This Expedia deal was found by Cheapflights users on 5/29. 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.
Fri 7/35:37 pm
PDX
- SYD
2 stops32h 33m
Multiple Airlines
Deal found 5/29![Multiple Airlines logo]()
$695
This United Airlines deal was found by Cheapflights users on 5/29. 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
Deal found 5/29![United Airlines logo]()
$703
This Delta deal was found by Cheapflights users on 5/28. 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 7/195:45 am
PDX
- SYD
2 stops32h 05m
Delta
Deal found 5/28![Delta logo]()
$720
This Kiwi.com deal was found by Cheapflights users on 5/28. 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 7/197:19 am
PDX
- SYD
3 stops38h 31m
Multiple Airlines
Deal found 5/28![Multiple Airlines logo]()
$1,045
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 30, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,060 (Air Canada) |
One-way from | $630 (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 30, 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 6/29
5:00 am-7:00 am
2 stops33h 00m
Sydney Kingsford Smith
Sun 8/2
10:20 am-10:20 am
1 stop17h 00m
$1,164
PortlandSydney
PDX - SYD
PDXSYD
Portland
Mon 8/10
12:50 pm-7:00 am
2 stops25h 10m
Sydney Kingsford Smith
Wed 8/26
9:30 am-5:49 pm
2 stops25h 19m
$1,165
PortlandSydney
PDX - SYD
PDXSYD
Portland
Sat 8/8
11:59 pm-6:55 am
2 stops37h 56m
Sydney Kingsford Smith
Tue 8/18
9:30 am-5:50 pm
2 stops25h 20m
$1,165
PortlandSydney
PDX - SYD
PDXSYD
Portland
Mon 6/29
7:46 am-6:50 pm
1 stop18h 04m
Sydney Kingsford Smith
Thu 7/30
8:45 pm-6:11 am
1 stop26h 26m
$1,182
Quickest round-trip
PortlandSydney
PDX - SYD
PDXSYD
Portland
Tue 7/28
6:03 pm-6:55 am
1 stop19h 52m
Sydney Kingsford Smith
Sat 8/8
10:20 am-10:20 am
1 stop17h 00m
$1,276
PortlandSydney
PDX - SYD
PDXSYD
Portland
Thu 7/2
6:03 pm-6:55 am
1 stop19h 52m
Sydney Kingsford Smith
Tue 7/28
9:30 am-5:44 pm
2 stops25h 14m
$1,280
PortlandSydney
PDX - SYD
PDXSYD
Portland
Fri 7/3
11:05 am-7:00 am
2 stops26h 55m
Sydney Kingsford Smith
Sun 7/19
9:30 am-10:48 pm
2 stops30h 18m
$1,281
PortlandSydney
PDX - SYD
PDXSYD
Portland
Wed 7/1
9:45 pm-6:50 pm
2 stops28h 05m
Sydney Kingsford Smith
Thu 7/9
8:45 pm-8:50 pm
1 stop17h 05m
$1,285
PortlandSydney
PDX - SYD
PDXSYD
Portland
Tue 6/9
3:30 pm-7:05 am
2 stops22h 35m
Sydney Kingsford Smith
Mon 6/15
9:10 am-4:42 pm
2 stops24h 32m
$1,293
PortlandSydney
PDX - SYD
PDXSYD
Portland
Tue 6/23
12:23 pm-6:50 am
2 stops25h 27m
Sydney Kingsford Smith
Sun 8/2
9:15 am-11:54 pm
2 stops31h 39m
$1,296
Showing 1-10 of 19 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
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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 30, 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.
Crew
8.5
Entertainment
7.0
Overall
7.9
Boarding
8.1
Food
7.1
Comfort
7.8
Reviews
1 / 20
8.0
ExcellentEugene,Mar 2026
MFR - SEA
Crew
8.5
Entertainment
7.0
Overall
7.9
Boarding
8.1
Food
7.1
Comfort
7.8
Reviews
1 / 20
8.0
ExcellentEugene,Mar 2026
MFR - SEA
Crew
8.5
Entertainment
7.0
Overall
7.9
Boarding
8.1
Food
7.1
Comfort
7.8
Reviews
1 / 20
8.0
ExcellentEugene,Mar 2026
MFR - SEA
Crew
8.5
Entertainment
7.0
Overall
7.9
Boarding
8.1
Food
7.1
Comfort
7.8
Reviews
1 / 20
8.0
ExcellentEugene,Mar 2026
MFR - SEA
Crew
8.5
Entertainment
7.0
Overall
7.9
Boarding
8.1
Food
7.1
Comfort
7.8
Reviews
1 / 20
8.0
ExcellentEugene,Mar 2026
MFR - SEA
Crew
8.5
Entertainment
7.0
Overall
7.9
Boarding
8.1
Food
7.1
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 30, 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 30, 2026.
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Other flights to Sydney
Explore flights to Sydney departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on May 30, 2026.
Top 7 airlines flying from Portland to Sydney
Discover the top 7 airlines that operate flights from Portland to Sydney. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated May 30, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$229 | Average$1,268 | 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$1,161 | 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$1,182 | FlexibilityNo cancel fee | On-time75% |