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$395+ 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 8/18. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — SYD
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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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 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 June 12, 2025.

Round-trip from

$777
(Air Canada)

One-way from

$395
(Travelocity)

Popular in

December

Cheapest in

May

Average price

$1,087
From Portland to Sydney Kingsford Smith
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One-way flight from Portland to Sydney Kingsford Smith
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Highest demand for flights based on searches. 13% potential increase in price ($178 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($32 potential savings vs. average RT price).
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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 June 12, 2025.

This Air Canada deal was found by Cheapflights users on 6/11. 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 8/207:40 pmPDX - SYD
1 stop18h 40mAir Canada
Wed 10/19:20 amSYD - PDX
1 stop17h 01mAir Canada
Deal found 6/11$777
This Cheapflightsfares deal was found by Cheapflights users on 6/11. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/92:56 pmPDX - SYD
1 stop23h 09mQantas Airways
Sat 8/235:45 pmSYD - PDX
1 stop20h 30mQantas Airways
Deal found 6/11$793
This American Airlines deal was found by Cheapflights users on 6/11. 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.
Thu 8/282:56 pmPDX - SYD
1 stop23h 34mAmerican Airlines
Thu 9/115:45 pmSYD - PDX
2 stops22h 26mAmerican Airlines
Deal found 6/11$840
This Delta deal was found by Cheapflights users on 6/11. 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 8/912:35 pmPDX - SYD
1 stop25h 00mDelta
Sat 8/309:25 amSYD - PDX
1 stop23h 34mDelta
Deal found 6/11$850
This United Airlines deal was found by Cheapflights users on 6/11. 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 8/281:01 pmPDX - SYD
2 stops24h 59mUnited Airlines
Sat 9/1310:20 amSYD - PDX
1 stop19h 23mUnited Airlines
Deal found 6/11$855
This Kiwi.com deal was found by Cheapflights users on 6/11. 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.
Tue 8/125:35 pmPDX - SYD
1 stop28h 05mMultiple Airlines
Sun 8/174:20 pmSYD - PDX
1 stop17h 00mMultiple Airlines
Deal found 6/11$982
This FlightHub deal was found by Cheapflights users on 6/11. 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 8/2710:05 amPDX - SYD
2 stops30h 20mANA
Wed 9/1011:50 amSYD - PDX
2 stops23h 56mANA
Deal found 6/11$1,020
This Alaska Airlines deal was found by Cheapflights users on 6/10. 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 10/317:09 amPDX - SYD
1 stop18h 36mAlaska Airlines
Sun 11/99:40 pmSYD - PDX
1 stop26h 54mAlaska Airlines
Deal found 6/10$1,159
This FlightHub deal was found by Cheapflights users on 6/10. 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 10/303:54 pmPDX - SYD
2 stops22h 51mAir New Zealand
Fri 11/71:55 pmSYD - PDX
2 stops23h 29mAir New Zealand
Deal found 6/10$1,361
This FlightHub deal was found by Cheapflights users on 6/10. 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 10/291:58 pmPDX - SYD
2 stops38h 12mFiji Airways
Fri 11/72:00 pmSYD - PDX
2 stops27h 01mFiji Airways
Deal found 6/10$1,384
This Jetabroad deal was found by Cheapflights users on 6/10. 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 Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/259:40 pmPDX - SYD
2 stops29h 05mHawaiian Airlines
Fri 8/19:40 pmSYD - PDX
2 stops19h 19mHawaiian Airlines
Deal found 6/10$1,466

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 June 12, 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 8/20

7:40 pm-7:20 am

1 stop18h 40m

Sydney Kingsford Smith

Wed 10/1

9:20 am-9:21 am

1 stop17h 01m

$777

PortlandSydney

PDX - SYD

PDXSYD

Portland

Sat 8/9

2:56 pm-7:05 am

1 stop23h 09m

Sydney Kingsford Smith

Sat 8/23

5:45 pm-9:15 pm

1 stop20h 30m

$793

PortlandSydney

PDX - SYD

PDXSYD

Portland

Thu 8/28

2:56 pm-7:30 am

1 stop23h 34m

Sydney Kingsford Smith

Thu 9/11

5:45 pm-11:11 pm

2 stops22h 26m

$840

PortlandSydney

PDX - SYD

PDXSYD

Portland

Sat 8/9

12:35 pm-6:35 am

1 stop25h 00m

Sydney Kingsford Smith

Sat 8/30

9:25 am-3:59 pm

1 stop23h 34m

$850

PortlandSydney

PDX - SYD

PDXSYD

Portland

Thu 8/28

1:01 pm-7:00 am

2 stops24h 59m

Sydney Kingsford Smith

Wed 9/10

10:20 am-3:05 pm

2 stops21h 45m

$855

PortlandSydney

PDX - SYD

PDXSYD

Portland

Tue 8/12

5:35 pm-2:40 pm

1 stop28h 05m

Sydney Kingsford Smith

Sun 8/17

4:20 pm-4:20 pm

1 stop17h 00m

$982

PortlandSydney

PDX - SYD

PDXSYD

Portland

Wed 8/27

10:05 am-9:25 am

2 stops30h 20m

Sydney Kingsford Smith

Wed 9/10

11:50 am-6:46 pm

2 stops23h 56m

$1,020

PortlandSydney

PDX - SYD

PDXSYD

Portland

Fri 10/31

7:09 am-7:45 pm

1 stop18h 36m

Sydney Kingsford Smith

Sun 11/9

9:40 pm-5:34 am

1 stop26h 54m

$1,159

PortlandSydney

PDX - SYD

PDXSYD

Portland

Thu 10/30

3:54 pm-8:45 am

2 stops22h 51m

Sydney Kingsford Smith

Fri 11/7

1:55 pm-6:24 pm

2 stops23h 29m

$1,361

PortlandSydney

PDX - SYD

PDXSYD

Portland

Wed 10/29

1:58 pm-10:10 pm

2 stops38h 12m

Sydney Kingsford Smith

Fri 11/7

2:00 pm-10:01 pm

2 stops27h 01m

$1,384

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Showing 1-10 of 17 results
1
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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 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

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 June 9, 2025.

Booking 88 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, March is the cheapest month in which you can book a flight from Portland to Sydney (average of $1,041). Flying from Portland to Sydney in December is currently the most expensive (average of $1,635). 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 June 12, 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 June 12, 2025.
Peruse reviews from past customers who have flown with ANA, Fiji Airways and Singapore Airlines from Portland to Sydney to help guide your decision. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
ANA
8.3
Very good
882 reviews

Food

7.7

Overall

8.3

Comfort

8.2

Entertainment

7.9

Boarding

8.5

Crew

8.7

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

Food

7.7

Overall

8.3

Comfort

8.2

Entertainment

7.9

Boarding

8.5

Crew

8.7

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

Food

7.7

Overall

8.3

Comfort

8.2

Entertainment

7.9

Boarding

8.5

Crew

8.7

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.
Singapore Airlines
8.1
Very good
1,302 reviews
ANA
8.3
Very good
882 reviews

Food

7.7

Overall

8.3

Comfort

8.2

Entertainment

7.9

Boarding

8.5

Crew

8.7

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

Food

7.7

Overall

8.3

Comfort

8.2

Entertainment

7.9

Boarding

8.5

Crew

8.7

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

Food

7.7

Overall

8.3

Comfort

8.2

Entertainment

7.9

Boarding

8.5

Crew

8.7

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?

    Air Canada, at $777, was found to be the cheapest airline from Portland to Sydney.Alternate airlines to your destination round-trip include Qantas Airways and American Airlines. Air Canada is 33% 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 Air Canada. According to our data, you can fly for as low as $395. Users have also found prices from $429 and $436 on American Airlines and United 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 $56 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, Orpheum Theatre, and Capilano Suspension Bridge. Pacific Central Station, Orpheum Theatre and Capilano Suspension Bridge are located about 6.6 mi, 6.5 mi, and 10.6 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 $50.

  • 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, March is the cheapest month in which you can book a flight from Portland to Sydney (average of $1,041). Flying from Portland to Sydney in December is currently the most expensive (average of $1,635). 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
Manly
Coogee

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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.
Redmond to Sydney flights
Boise to Sydney flights
Eugene to Sydney flights
Medford 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Hawaiian AirlinesCheapest$680Average$1,159FlexibilityNo cancel feeOn-time85%
Air CanadaCheapest$848Average$1,068FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$912Average$1,133FlexibilityNo cancel feeOn-time69%
DeltaCheapest$922Average$1,132FlexibilityNo cancel feeOn-timeN/A
Qantas AirwaysCheapest$1,043Average$1,137FlexibilityNo cancel feeOn-time74%
American AirlinesCheapest$1,055Average$1,200FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$1,068Average$1,223FlexibilityNo cancel feeOn-time75%

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