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Cheap flights from Portland to Sydney from $606

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 18/8. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — SYD
18 Jun — 25 Jun1
1 adult

Cheapflights Tip: The best prices from Portland to Sydney Kingsford Smith are usually found in May or February, booked 88 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 13 June 2025.

Round-trip from

$1,193

One-way from

$606

Popular in

December

Cheapest in

May

Average price

$1,669
Air Canada
  • Air Canada
  • 20/8-1/10
  • 2 total stops
  • 35h 41m total
  • Portland to Sydney
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Air Canada
  • Air Canada
  • 18/8
  • 1 total stop
  • 28h 15m total
  • Portland to Sydney
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($417 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($76 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 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 13 June 2025.

Wed 20/819:40PDX - SYD
1 stop18h 40mAir Canada
Wed 1/1009:20SYD - PDX
1 stop17h 01mAir Canada
Deal found 11/6$1,193
Sat 9/814:56PDX - SYD
1 stop23h 09mQantas Airways
Sat 23/817:45SYD - PDX
1 stop20h 30mQantas Airways
Deal found 12/6$1,217
Thu 28/814:56PDX - SYD
1 stop23h 34mAmerican Airlines
Thu 11/917:45SYD - PDX
2 stops22h 26mAmerican Airlines
Deal found 11/6$1,290
Sat 9/812:35PDX - SYD
1 stop25h 00mDelta
Sat 30/809:25SYD - PDX
1 stop23h 34mDelta
Deal found 11/6$1,305
Thu 28/813:01PDX - SYD
2 stops24h 59mUnited Airlines
Fri 12/909:30SYD - PDX
2 stops22h 35mUnited Airlines
Deal found 11/6$1,313
Tue 12/817:35PDX - SYD
1 stop28h 05mMultiple Airlines
Sun 17/816:20SYD - PDX
1 stop17h 00mMultiple Airlines
Deal found 11/6$1,507
Wed 27/810:05PDX - SYD
2 stops30h 20mANA
Wed 10/911:50SYD - PDX
2 stops23h 56mANA
Deal found 11/6$1,566
Sun 29/617:35PDX - SYD
1 stop33h 10mAlaska Airlines
Sun 6/721:40SYD - PDX
1 stop25h 15mAlaska Airlines
Deal found 11/6$2,106
Mon 21/707:30PDX - SYD
1 stop19h 15mHawaiian Airlines
Fri 8/821:40SYD - PDX
1 stop25h 15mHawaiian Airlines
Deal found 11/6$2,461
Mon 22/1215:25PDX - SYD
2 stops31h 40mAir New Zealand
Fri 2/112:10SYD - PDX
1 stop30h 09mAir New Zealand
Deal found 12/6$3,158
Sun 10/817:40PDX - SYD
3 stops28h 30mAir Tahiti Nui
Sun 17/809:10SYD - PDX
3 stops24h 15mAir Tahiti Nui
Deal found 12/6$3,340

Cheapflights Fare Finder

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 13 June 2025.
Use the filters below to find and compare flights from Portland to Sydney that are best for you.

Fly from

Portland

Fly to

Sydney

Route

Depart

Return

Price

PortlandSydney

PDX - SYD

PDXSYD

Portland

Wed 20/8

19:40-07:20

1 stop18h 40m

Sydney Kingsford Smith

Wed 1/10

09:20-09:21

1 stop17h 01m

$1,193

PortlandSydney

PDX - SYD

PDXSYD

Portland

Sat 9/8

14:56-07:05

1 stop23h 09m

Sydney Kingsford Smith

Sat 23/8

17:45-21:15

1 stop20h 30m

$1,217

PortlandSydney

PDX - SYD

PDXSYD

Portland

Thu 28/8

14:56-07:30

1 stop23h 34m

Sydney Kingsford Smith

Thu 11/9

17:45-23:11

2 stops22h 26m

$1,290

PortlandSydney

PDX - SYD

PDXSYD

Portland

Sat 9/8

12:35-06:35

1 stop25h 00m

Sydney Kingsford Smith

Sat 30/8

09:25-15:59

1 stop23h 34m

$1,305

PortlandSydney

PDX - SYD

PDXSYD

Portland

Thu 28/8

13:01-07:00

2 stops24h 59m

Sydney Kingsford Smith

Fri 12/9

09:30-15:05

2 stops22h 35m

$1,313

PortlandSydney

PDX - SYD

PDXSYD

Portland

Tue 12/8

17:35-14:40

1 stop28h 05m

Sydney Kingsford Smith

Sun 17/8

16:20-16:20

1 stop17h 00m

$1,507

PortlandSydney

PDX - SYD

PDXSYD

Portland

Wed 27/8

10:05-09:25

2 stops30h 20m

Sydney Kingsford Smith

Wed 10/9

11:50-18:46

2 stops23h 56m

$1,566

PortlandSydney

PDX - SYD

PDXSYD

Portland

Fri 31/10

07:09-19:45

1 stop18h 36m

Sydney Kingsford Smith

Sun 9/11

21:40-05:34

1 stop26h 54m

$1,779

PortlandSydney

PDX - SYD

PDXSYD

Portland

Thu 30/10

15:54-08:45

2 stops22h 51m

Sydney Kingsford Smith

Fri 7/11

13:55-18:24

2 stops23h 29m

$2,089

PortlandSydney

PDX - SYD

PDXSYD

Portland

Wed 29/10

13:58-22:10

2 stops38h 12m

Sydney Kingsford Smith

Fri 7/11

14:00-22:01

2 stops27h 01m

$2,125

Flights are sorted by cheapest return flights first.

Deals found on 11/6

Showing 1-10 of 16 results
1
2

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.

Cheapflights Insights

Everything you need to know about your flight from Portland to Sydney

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 9 June 2025.

The best time to book flights from Portland to Sydney is 88 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 13 June 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 13 June 2025.
To help decide which airline to fly from Portland to Sydney, see what other customers have to say about ANA, Fiji Airways and Alaska Airlines. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
ANA
8.3
Very Good
882 reviews
Check prices

Boarding

8.5

Food

7.7

Crew

8.7

Comfort

8.2

Overall

8.3

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

SEA - HND

The flight with ANA was fantastic. Huge plane but was boarded swiftly and efficiently with a lot of crew members engaged to expedite the process. The onboard crew was polite and considerate and constantly doing things to serve passengers. The plane was new and in great working order-- definitely more spacious than the Alaska plane we took from SLC. Food was solid, not great. Lots of movie options.
ANA
8.3
Very Good
882 reviews
ANA
8.3
Very Good
882 reviews
Check prices

Boarding

8.5

Food

7.7

Crew

8.7

Comfort

8.2

Overall

8.3

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

SEA - HND

The flight with ANA was fantastic. Huge plane but was boarded swiftly and efficiently with a lot of crew members engaged to expedite the process. The onboard crew was polite and considerate and constantly doing things to serve passengers. The plane was new and in great working order-- definitely more spacious than the Alaska plane we took from SLC. Food was solid, not great. Lots of movie options.
Fiji Airways
8.1
Very Good
194 reviews
ANA
8.3
Very Good
882 reviews
Check prices

Boarding

8.5

Food

7.7

Crew

8.7

Comfort

8.2

Overall

8.3

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

SEA - HND

The flight with ANA was fantastic. Huge plane but was boarded swiftly and efficiently with a lot of crew members engaged to expedite the process. The onboard crew was polite and considerate and constantly doing things to serve passengers. The plane was new and in great working order-- definitely more spacious than the Alaska plane we took from SLC. Food was solid, not great. Lots of movie options.
Alaska Airlines
8.0
Very Good
10,000 reviews
ANA
8.3
Very Good
882 reviews
Check prices

Boarding

8.5

Food

7.7

Crew

8.7

Comfort

8.2

Overall

8.3

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

SEA - HND

The flight with ANA was fantastic. Huge plane but was boarded swiftly and efficiently with a lot of crew members engaged to expedite the process. The onboard crew was polite and considerate and constantly doing things to serve passengers. The plane was new and in great working order-- definitely more spacious than the Alaska plane we took from SLC. Food was solid, not great. Lots of movie options.
Delta
8.0
Very Good
7,950 reviews
ANA
8.3
Very Good
882 reviews
Check prices

Boarding

8.5

Food

7.7

Crew

8.7

Comfort

8.2

Overall

8.3

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

SEA - HND

The flight with ANA was fantastic. Huge plane but was boarded swiftly and efficiently with a lot of crew members engaged to expedite the process. The onboard crew was polite and considerate and constantly doing things to serve passengers. The plane was new and in great working order-- definitely more spacious than the Alaska plane we took from SLC. Food was solid, not great. Lots of movie options.
Air New Zealand
8.0
Very Good
483 reviews
ANA
8.3
Very Good
882 reviews
Check prices

Boarding

8.5

Food

7.7

Crew

8.7

Comfort

8.2

Overall

8.3

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

SEA - HND

The flight with ANA was fantastic. Huge plane but was boarded swiftly and efficiently with a lot of crew members engaged to expedite the process. The onboard crew was polite and considerate and constantly doing things to serve passengers. The plane was new and in great working order-- definitely more spacious than the Alaska plane we took from SLC. Food was solid, not great. Lots of movie options.

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 $1,193. Other airlines that can offer you cheap pricing are Qantas Airways, from $1,217, and American Airlines, from $1,290. You may be able to fly from Portland to Sydney for 33% 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 $606 on Air Canada. Other airlines that offer cheap prices include American Airlines from $659 and United Airlines from $669 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
Katoomba
Manly
Penrith
Coogee
Randwick
Cronulla
Terrigal
Lithgow
Bondi Beach
Leura
Swansea

Browse thousands of different options on Cheapflights for your next trip

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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.
Eugene to Sydney flights
Boise to Sydney flights
Portland to Coolangatta 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 13 June 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$1,383Average$1,919FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

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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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