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$428+ 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 3/1. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — SYD
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
1 adult, Economy
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The best prices from Portland to Sydney Kingsford Smith are usually found in February or November, booked 23 days in advance, depart on a Saturday or Sunday and return on a Wednesday

Cheap 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 February 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$920
(United Airlines)

One-way from

$428
(American Airlines)

Popular in

December

Cheapest in

February

Average price

$1,039
Provider with most accurate pricing for Portland-Sydney Kingsford Smith flight deals.
Search Deals
Provider most trusted by Cheapflights users for Portland-Sydney Kingsford Smith flights.
Search Deals
From Portland to Sydney Kingsford Smith
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One-way flight from Portland to Sydney Kingsford Smith
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($162 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($38 potential savings vs. average RT price).
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Average for round-trip flights in February 2025
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Find flight deals from Portland to Sydney

Cheapest flights from Portland to Sydney
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 February 20, 2025.

This United Airlines deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/107:00 amPDX - SYD
2 stops30h 00mUnited Airlines
Sun 3/1612:10 pmSYD - PDX
1 stop30h 40mUnited Airlines
Deal found 2/20$920
This Air Canada deal was found by Cheapflights users on 2/20. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/87:05 pmPDX - SYD
2 stops32h 20mAir Canada
Mon 3/177:30 amSYD - PDX
2 stops25h 14mAir Canada
Deal found 2/20$927
This Delta deal was found by Cheapflights users on 2/20. 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.
Sat 3/159:12 amPDX - SYD
2 stops26h 53mDelta
Sat 3/2210:05 amSYD - PDX
2 stops20h 18mDelta
Deal found 2/20$928
This Justfly.com deal was found by Cheapflights users on 2/20. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/147:40 pmPDX - SYD
2 stops28h 00mMultiple Airlines
Sun 6/227:00 amSYD - PDX
2 stops19h 35mMultiple Airlines
Deal found 2/20$946
This KAYAK deal was found by Cheapflights users on 2/20. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/121:26 pmPDX - SYD
2 stops28h 09mAir New Zealand
Mon 8/259:55 amSYD - PDX
2 stops25h 41mAir New Zealand
Deal found 2/20$1,121
This Alaska Airlines deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/206:07 pmPDX - SYD
1 stop31h 38mAlaska Airlines
Sun 3/309:40 pmSYD - PDX
1 stop25h 25mAlaska Airlines
Deal found 2/20$1,174
This Gurufare deal was found by Cheapflights users on 2/20. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/175:30 pmPDX - SYD
1 stop20h 35mQantas Airways
Fri 5/305:45 pmSYD - PDX
1 stop23h 11mQantas Airways
Deal found 2/20$1,362
This FlightHub deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/145:30 pmPDX - SYD
2 stops25h 45mFiji Airways
Wed 8/201:15 pmSYD - PDX
2 stops24h 49mFiji Airways
Deal found 2/20$1,591
This KAYAK deal was found by Cheapflights users on 2/20. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/63:49 pmPDX - SYD
2 stops46h 46mCathay Pacific
Mon 3/1710:20 pmSYD - PDX
2 stops40h 24mCathay Pacific
Deal found 2/20$1,738
This KAYAK deal was found by Cheapflights users on 2/20. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/167:30 amPDX - SYD
3 stops39h 25mSingapore Airlines
Wed 11/267:10 pmSYD - PDX
2 stops34h 45mSingapore Airlines
Deal found 2/20$1,881
This FlightHub deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/75:37 pmPDX - SYD
3 stops29h 03mAir Tahiti Nui
Sun 3/168:55 amSYD - PDX
3 stops31h 43mAir Tahiti Nui
Deal found 2/20$1,964
This Asiana Airlines deal was found by Cheapflights users on 2/20. 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 Asiana Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/137:41 pmPDX - SYD
2 stops42h 49mAsiana Airlines
Sat 8/239:30 amSYD - PDX
2 stops27h 35mAsiana Airlines
Deal found 2/20$2,201

Find flights from Portland to Sydney within your budget

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 February 20, 2025.

Fly from

Portland

Fly to

Sydney

Route

Depart

Return

Price

PortlandSydney

PDX - SYD

PDXSYD

Portland

Mon 3/10

7:00 am-7:00 am

2 stops30h 00m

Sydney Kingsford Smith

Sun 3/16

12:10 pm-12:50 am

1 stop30h 40m

$920

PortlandSydney

PDX - SYD

PDXSYD

Portland

Sat 3/8

7:05 pm-10:25 pm

2 stops32h 20m

Sydney Kingsford Smith

Tue 3/18

7:30 am-9:34 am

2 stops20h 04m

$927

PortlandSydney

PDX - SYD

PDXSYD

Portland

Sat 3/15

9:12 am-6:05 am

2 stops26h 53m

Sydney Kingsford Smith

Sat 3/22

10:05 am-12:23 pm

2 stops20h 18m

$928

PortlandSydney

PDX - SYD

PDXSYD

Portland

Sat 6/14

7:40 pm-4:40 pm

2 stops28h 00m

Sydney Kingsford Smith

Sun 6/22

7:00 am-9:35 am

2 stops19h 35m

$946

PortlandSydney

PDX - SYD

PDXSYD

Portland

Tue 8/12

1:26 pm-10:35 am

2 stops28h 09m

Sydney Kingsford Smith

Mon 8/25

9:55 am-6:36 pm

2 stops25h 41m

$1,121

PortlandSydney

PDX - SYD

PDXSYD

Portland

Thu 3/20

6:07 pm-7:45 pm

1 stop31h 38m

Sydney Kingsford Smith

Sun 3/30

9:40 pm-5:05 am

1 stop25h 25m

$1,174

PortlandSydney

PDX - SYD

PDXSYD

Portland

Sat 5/17

5:30 pm-7:05 am

1 stop20h 35m

Sydney Kingsford Smith

Fri 5/30

5:45 pm-11:56 pm

1 stop23h 11m

$1,362

PortlandSydney

PDX - SYD

PDXSYD

Portland

Thu 8/14

5:30 pm-12:15 pm

2 stops25h 45m

Sydney Kingsford Smith

Wed 8/20

1:15 pm-9:04 pm

2 stops24h 49m

$1,591

PortlandSydney

PDX - SYD

PDXSYD

Portland

Thu 3/6

3:49 pm-9:35 am

2 stops46h 46m

Sydney Kingsford Smith

Mon 3/17

10:20 pm-8:44 pm

2 stops40h 24m

$1,738

PortlandSydney

PDX - SYD

PDXSYD

Portland

Fri 3/7

5:37 pm-5:40 pm

3 stops29h 03m

Sydney Kingsford Smith

Sun 3/16

8:55 am-10:38 pm

3 stops31h 43m

$1,964

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

Showing 1-10 of 25 results
1
2
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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 February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*1 star
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • 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.
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.

Travel insights for flights from Portland to Sydney

Get recent, data-driven insights about flights from Portland to Sydney including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from Portland to Sydney?

Use this chart to determine the optimal time to book a round-trip flight from Portland to Sydney. Price data was last updated on February 14, 2025.

Booking 23 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, February is the cheapest month in which you can book a flight from Portland to Sydney (average of $1,051). Flying from Portland to Sydney in December is currently the most expensive (average of $1,643). 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.

What is the cheapest time of day to fly from PDX to SYD?

Find hourly flight availability from Portland to Sydney. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 20, 2025.

A simple way to save on the total cost of your ticket is to fly from Portland to Sydney in the morning. If you’re flexible enough to do this you can expect to save up to 7% on your trip compared to booking a flight at noon.

What is the cheapest day to fly from Portland to Sydney?

Use this chart to determine the cheapest time to fly round-trip from Portland to Sydney. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Portland to Sydney flight should consider departing on Saturday mornings when fares are most often at their lowest. Saturday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in Sydney by month

Plan your trip to Sydney by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Sydney ranges from 2.0 - 5.1 inches per month. March is typically the wettest month, when rainfall can reach 5.1 in. September is typically the driest time to visit Sydney when rainfall is around 2.0 in.

Temperature in Sydney by month

Plan your trip to Sydney by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Sydney, use this chart to help with planning. For those seeking warmer temperatures, January is the ideal time of year to visit, when temperatures reach an average of 71.6 F. Travelers looking to avoid the cold should look outside of July, when temperatures are typically at their lowest (around 51.8 F).

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 February 20, 2025.
Air Tahiti Nui
8.7
Very good
61 reviews

Crew

9.1

Food

7.8

Comfort

8.0

Overall

8.7

Boarding

8.7

Entertainment

7.2

Reviews

1 / 2

10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.

Air Tahiti Nui
8.7
Very good
61 reviews
Air Tahiti Nui
8.7
Very good
61 reviews

Crew

9.1

Food

7.8

Comfort

8.0

Overall

8.7

Boarding

8.7

Entertainment

7.2

Reviews

1 / 2

10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.

ANA
8.4
Very good
842 reviews
Air Tahiti Nui
8.7
Very good
61 reviews

Crew

9.1

Food

7.8

Comfort

8.0

Overall

8.7

Boarding

8.7

Entertainment

7.2

Reviews

1 / 2

10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.

Korean Air
8.4
Very good
1,037 reviews
Air Tahiti Nui
8.7
Very good
61 reviews

Crew

9.1

Food

7.8

Comfort

8.0

Overall

8.7

Boarding

8.7

Entertainment

7.2

Reviews

1 / 2

10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.

Singapore Airlines
8.1
Very good
1,299 reviews
Air Tahiti Nui
8.7
Very good
61 reviews

Crew

9.1

Food

7.8

Comfort

8.0

Overall

8.7

Boarding

8.7

Entertainment

7.2

Reviews

1 / 2

10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.

Fiji Airways
8.0
Very good
185 reviews
Air Tahiti Nui
8.7
Very good
61 reviews

Crew

9.1

Food

7.8

Comfort

8.0

Overall

8.7

Boarding

8.7

Entertainment

7.2

Reviews

1 / 2

10.0
Excellent

Isabelle,Apr 2023

AKL - PPT

Les sièges sont étroits, je mesure 1,77 m, les passants dans le couloirs notamment l'équipage n'arrêtaient pas de me cogner. nous étions en économie. l'équipage est au top. C'est le confort qui était négatif pour nous.

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.

  • What are the cheapest airlines flying from Portland to Sydney round-trip?

    United Airlines, at $920, was found to be the cheapest airline from Portland to Sydney.Alternate airlines to your destination round-trip include Air Canada and Delta. United Airlines is 21% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Portland to Sydney one-way?

    For one-way options, check prices for American Airlines. According to our data, you can fly for as low as $428. Users have also found prices from $431 and $528 on United Airlines and Alaska Airlines, respectively.

  • Where are the most common layover locations when flying from Portland to Sydney?

    The most popular layover on flights from Portland to Sydney is San Francisco. Portland to Sydney flights stop in Vancouver the next most.

  • What are some popular things to do or see while on a layover in San Francisco?

    If you're on a layover in San Francisco and looking for things to do, consider visiting Fisherman's Wharf, Union Square, or Bill Graham Civic Auditorium. Fisherman's Wharf, Union Square, and Bill Graham Civic Auditorium can be accessed by traveling approximately 13.0 mi, 11.6 mi, and 11.1 mi, respectively from San Francisco. Travelers can rent a car at San Francisco for an average daily rate of $49 to make sightseeing during their layover a little easier.

  • What are some popular points of interest to see during a layover in Vancouver?

    Most Vancouver visitors opt to spend their time at Pacific Central Station, Queen Elizabeth Theatre, and Vancouver Harbour Centre. Pacific Central Station, Queen Elizabeth Theatre and Vancouver Harbour Centre are located about 6.6 mi, 6.6 mi, and 6.9 mi, respectively from Vancouver Intl if you are interested in checking them out. Those on a layover in Vancouver in need of a rental car can book one at Vancouver Intl for about $39.

  • Where are the least popular layover locations for Portland to Sydney flights?

    Portland to Sydney flights that have layovers will least frequently stop in Los Angeles.

  • Can I find deals for flights from Portland to Sydney that include hotel bookings?

    Yes. In addition to deals on Portland to Sydney flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Portland to Sydney?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portland to Sydney.

  • Can I find deals for business class flights from Portland to Sydney?

    Yes. Cheapflights offers flight deals from Portland to Sydney by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Portland to Sydney?

    Currently, February is the cheapest month in which you can book a flight from Portland to Sydney (average of $1,051). Flying from Portland to Sydney in December is currently the most expensive (average of $1,643). 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.

See more FAQs

Traveling to a place near Portland?

Book flights to Portland if you plan to visit one of these locations
Wollongong
Parramatta
Coogee
Manly

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Alternative routes for Portland to Sydney

See prices for flight routes from nearby airports that may be better suited for you.
Boise to Sydney flights
Redmond to Sydney flights
Medford to Sydney flights
Eugene to Sydney flights
Portland to Coolangatta flights

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 February 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
Hawaiian AirlinesCheapest$444Average$1,080FlexibilityNo cancel feeOn-time85%
United AirlinesCheapest$759Average$1,129FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$816Average$1,103FlexibilityNo cancel feeOn-time67%
DeltaCheapest$879Average$1,165FlexibilityNo cancel feeOn-timeN/A
Qantas AirwaysCheapest$1,036Average$1,137FlexibilityNo cancel feeOn-time74%
American AirlinesCheapest$1,055Average$1,179FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$1,068Average$1,259FlexibilityNo cancel feeOn-time75%
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