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Cheap flights from Portland to Sydney from $699

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 1/3. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — SYD
26 Jan — 2 Feb1
1 adult

The best prices from Portland to Sydney Kingsford Smith are usually found in February or May, booked 23 days in advance, depart on a Tuesday or Wednesday and return on a Tuesday

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 21 January 2025.

Round-trip from

$1,471

One-way from

$699

Popular in

December

Cheapest in

February

Average price

$2,093
13/2-28/2
  • 13/2-28/2
  • 3 total stops
  • 52h 45m total
  • Portland to Sydney
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United Airlines
  • United Airlines
  • 1/3
  • 1 total stop
  • 28h 20m total
  • Portland to Sydney
Search Deals
High demand for flights, 13% potential price rise
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Best time to find cheap flights, 3% potential price drop
Search Deals
Average for round-trip flights in January 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 21 January 2025.

Sun 1/617:33PDX - SYD
1 stop28h 07mMultiple Airlines
Sun 8/613:15SYD - PDX
2 stops43h 43mMultiple Airlines
Deal found 21/1$1,468
Sat 8/206:00PDX - SYD
1 stop32h 00mAmerican Airlines
Fri 21/211:15SYD - PDX
1 stop22h 58mAmerican Airlines
Deal found 20/1$1,505
Mon 10/307:45PDX - SYD
1 stop18h 00mAlaska Airlines
Thu 20/321:40SYD - PDX
1 stop25h 25mAlaska Airlines
Deal found 20/1$1,518
Mon 10/319:05PDX - SYD
2 stops23h 35mAir Canada
Thu 20/319:15SYD - PDX
2 stops32h 19mAir Canada
Deal found 20/1$1,537
Sat 19/419:35PDX - SYD
1 stop18h 20mUnited Airlines
Thu 1/510:20SYD - PDX
1 stop21h 38mUnited Airlines
Deal found 20/1$1,545
Tue 4/309:38PDX - SYD
1 stop39h 07mHawaiian Airlines
Tue 11/321:40SYD - PDX
2 stops20h 27mHawaiian Airlines
Deal found 20/1$1,583
Wed 21/513:00PDX - SYD
1 stop24h 35mDelta
Wed 4/609:25SYD - PDX
1 stop23h 44mDelta
Deal found 20/1$1,716
Mon 17/314:45PDX - SYD
2 stops36h 05mCathay Pacific
Wed 26/315:15SYD - PDX
2 stops35h 17mCathay Pacific
Deal found 21/1$2,366
Mon 10/309:38PDX - SYD
3 stops56h 52mFiji Airways
Thu 20/314:00SYD - PDX
2 stops26h 38mFiji Airways
Deal found 20/1$2,554

Find flights from Portland to Sydney within your budget

Customise 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 647,157 searches. Data last updated 21 January 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

PortlandSydney

PDX - SYD

PDXSYD

Portland

Thu 13/2

09:50-13:00

2 stops32h 10m

Sydney Kingsford Smith

Fri 28/2

17:25-19:00

1 stop20h 35m

$1,471

PortlandSydney

PDX - SYD

PDXSYD

Portland

Sat 8/2

06:00-09:00

1 stop32h 00m

Sydney Kingsford Smith

Fri 21/2

11:15-15:13

1 stop22h 58m

$1,505

PortlandSydney

PDX - SYD

PDXSYD

Portland

Mon 10/3

10:10-08:35

1 stop28h 25m

Sydney Kingsford Smith

Thu 20/3

19:15-09:34

2 stops32h 19m

$1,508

PortlandSydney

PDX - SYD

PDXSYD

Portland

Sat 19/4

19:35-06:55

1 stop18h 20m

Sydney Kingsford Smith

Thu 1/5

10:20-14:58

1 stop21h 38m

$1,545

PortlandSydney

PDX - SYD

PDXSYD

Portland

Tue 4/3

09:38-19:45

1 stop39h 07m

Sydney Kingsford Smith

Tue 11/3

21:40-00:07

2 stops20h 27m

$1,583

PortlandSydney

PDX - SYD

PDXSYD

Portland

Wed 21/5

13:00-06:35

1 stop24h 35m

Sydney Kingsford Smith

Wed 4/6

09:25-16:09

1 stop23h 44m

$1,716

PortlandSydney

PDX - SYD

PDXSYD

Portland

Fri 16/5

17:33-19:45

1 stop33h 12m

Sydney Kingsford Smith

Sat 31/5

21:40-21:45

1 stop17h 05m

$1,834

PortlandSydney

PDX - SYD

PDXSYD

Portland

Mon 10/3

09:38-21:50

3 stops66h 12m

Sydney Kingsford Smith

Thu 20/3

14:00-22:38

2 stops26h 38m

$2,607

PortlandSydney

PDX - SYD

PDXSYD

Portland

Sun 20/4

19:33-07:30

2 stops42h 57m

Sydney Kingsford Smith

Fri 2/5

09:30-09:27

2 stops40h 57m

$3,234

PortlandSydney

PDX - SYD

PDXSYD

Portland

Fri 16/5

13:25-17:50

3 stops35h 25m

Sydney Kingsford Smith

Sat 31/5

12:50-21:00

2 stops49h 10m

$3,287

Flights are sorted by cheapest return flights first.

Deals found on 20/1

Showing 1-10 of 24 results
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2
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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 return 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 return flight from Portland to Sydney. Price data was last updated on 17 January 2025.

The best time to book flights from Portland to Sydney is 23 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, May is the cheapest month in which you can book a flight from Portland to Sydney (average of $129). Flying from Portland to Sydney in October is currently the most expensive (average of $171). 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 21 January 2025.

One of the essential ways to save on airfare from Portland to Sydney is to remain as flexible as possible. Flights that are at midday tend to be the most expensive. A flight in the morning could potentially save you up to 23% on airfare.

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 50.0 - 130.0 inches per month. March is typically the wettest month, when rainfall can reach 130.0 mm. September is typically the driest time to visit Sydney when rainfall is around 50.0 mm.

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 22.0 C. Travellers hoping to avoid the cold should look outside of July, when temperatures are typically at their lowest (around 11.0 C).

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 21 January 2025.
To help decide which airline to fly from Portland to Sydney, see what other customers have to say about American Airlines, Fiji Airways and United Airlines. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Air Tahiti Nui
8.8
Very Good
62 reviews
Check prices

Boarding

8.7

Comfort

8.1

Crew

9.1

Food

7.8

Entertainment

7.3

Overall

8.8

Reviews

1 / 2

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
8.8
Very Good
62 reviews
Air Tahiti Nui
8.8
Very Good
62 reviews
Check prices

Boarding

8.7

Comfort

8.1

Crew

9.1

Food

7.8

Entertainment

7.3

Overall

8.8

Reviews

1 / 2

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
8.5
Very Good
1,039 reviews
Air Tahiti Nui
8.8
Very Good
62 reviews
Check prices

Boarding

8.7

Comfort

8.1

Crew

9.1

Food

7.8

Entertainment

7.3

Overall

8.8

Reviews

1 / 2

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.

Asiana Airlines
8.3
Very Good
466 reviews
Air Tahiti Nui
8.8
Very Good
62 reviews
Check prices

Boarding

8.7

Comfort

8.1

Crew

9.1

Food

7.8

Entertainment

7.3

Overall

8.8

Reviews

1 / 2

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
1,328 reviews
Air Tahiti Nui
8.8
Very Good
62 reviews
Check prices

Boarding

8.7

Comfort

8.1

Crew

9.1

Food

7.8

Entertainment

7.3

Overall

8.8

Reviews

1 / 2

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
8.1
Very Good
188 reviews
Air Tahiti Nui
8.8
Very Good
62 reviews
Check prices

Boarding

8.7

Comfort

8.1

Crew

9.1

Food

7.8

Entertainment

7.3

Overall

8.8

Reviews

1 / 2

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?

    Cheapflights users have booked flights from Portland to Sydney round-trip from $1,505. Other airlines that can offer you cheap pricing are Air Canada, from $1,508, and United Airlines, from $1,545. You may be able to fly from Portland to Sydney for 17% less than the average price by searching for these airlines.

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

    One-way options have recently been found by users for as low as $699 on United Airlines. Other airlines that offer cheap prices include American Airlines from $823 and Alaska Airlines from $857 one-way.

  • 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 holiday 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, May is the cheapest month in which you can book a flight from Portland to Sydney (average of $129). Flying from Portland to Sydney in October is currently the most expensive (average of $171). 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

Travelling to a place near Portland?

Book flights to Portland if you plan to visit one of these locations
Parramatta
Wollongong
Penrith
Katoomba
Randwick
Coogee
Manly
Cronulla
Bondi Beach
Terrigal
Lithgow
Leura
Swansea

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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
Portland to Coolangatta flights
Eugene to Sydney flights

Top airline flying from Portland to Sydney

Discover the top airline 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 647,157 searches. Data last updated 21 January 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$1,298Average$1,867FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Portland to Sydney?

Deals for Portland to Sydney flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Portland to Sydney?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Portland to Sydney.

Can Cheapflights find flights from Portland to Sydney with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Portland to Sydney flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Portland to Sydney become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Sydney from Portland today and book when prices fit your budget.

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