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$1,260+ Cheap flights from Portland, ME (PWM) to Sydney (SYD)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/3. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — SYD
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
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Cheap flight deals from Portland to Sydney

Best flights from Portland to Sydney
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 December 12, 2025.

This American Airlines deal was found by Cheapflights users on 12/11. 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.
Fri 4/37:10 amPWM - SYD
2 stops33h 55mAmerican Airlines
Wed 4/229:10 amSYD - PWM
2 stops28h 29mAmerican Airlines
Deal found 12/11$1,260
This United Airlines deal was found by Cheapflights users on 12/11. 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.
Mon 4/66:00 amPWM - SYD
2 stops35h 00mUnited Airlines
Tue 4/2110:20 amSYD - PWM
2 stops26h 38mUnited Airlines
Deal found 12/11$1,297
This Delta deal was found by Cheapflights users on 12/11. 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 4/44:50 pmPWM - SYD
2 stops47h 45mDelta
Tue 4/219:25 amSYD - PWM
2 stops26h 38mDelta
Deal found 12/11$1,316
This American Airlines deal was found by Cheapflights users on 12/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/267:10 amPWM - SYD
2 stops33h 15mAmerican Airlines
Sun 4/512:00 pmSYD - PWM
2 stops24h 59mAmerican Airlines
Deal found 12/10$1,272
This United Airlines deal was found by Cheapflights users on 12/11. 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.
Tue 4/72:27 pmPWM - SYD
2 stops26h 33mUnited Airlines
Tue 4/2110:20 amSYD - PWM
2 stops22h 41mUnited Airlines
Deal found 12/11$1,297
This Delta deal was found by Cheapflights users on 12/11. 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 4/44:50 pmPWM - SYD
2 stops47h 45mDelta
Mon 4/209:25 amSYD - PWM
2 stops26h 38mDelta
Deal found 12/11$1,316
This United Airlines deal was found by Cheapflights users on 12/11. 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.
Sun 4/56:00 amPWM - SYD
2 stops35h 00mUnited Airlines
Mon 4/2010:20 amSYD - PWM
2 stops26h 38mUnited Airlines
Deal found 12/11$1,297
This United Airlines deal was found by Cheapflights users on 12/11. 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.
Mon 4/66:00 amPWM - SYD
2 stops35h 00mUnited Airlines
Mon 4/209:30 amSYD - PWM
2 stops27h 28mUnited Airlines
Deal found 12/11$1,297
This United Airlines deal was found by Cheapflights users on 12/11. 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.
Fri 4/36:00 amPWM - SYD
2 stops34h 55mUnited Airlines
Sun 4/199:30 amSYD - PWM
2 stops25h 56mUnited Airlines
Deal found 12/11$1,347
This United Airlines deal was found by Cheapflights users on 12/11. 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.
Fri 4/36:00 amPWM - SYD
2 stops34h 55mUnited Airlines
Sat 4/1810:20 amSYD - PWM
2 stops25h 06mUnited Airlines
Deal found 12/11$1,397
This United Airlines deal was found by Cheapflights users on 12/11. 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.
Fri 4/36:00 amPWM - SYD
2 stops34h 55mUnited Airlines
Fri 4/179:30 amSYD - PWM
2 stops23h 31mUnited Airlines
Deal found 12/11$1,397

Find flight deals from Portland to Sydney

Discover tips and strategies to find the most affordable flight options for your journey from Portland (PWM) 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 December 12, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$1,272
(American Airlines)

Popular in

December

Cheapest in

September

Average price

$1,918
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
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($233 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($45 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 December 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

PWM - SYD

PWMSYD

Portland

Fri 4/3

7:10 am-8:05 am

2 stops33h 55m

Sydney Kingsford Smith

Wed 4/22

9:10 am-11:39 pm

2 stops28h 29m

$1,260

PortlandSydney

PWM - SYD

PWMSYD

Portland

Thu 3/26

7:10 am-7:25 am

2 stops33h 15m

Sydney Kingsford Smith

Sun 4/5

12:00 pm-10:59 pm

2 stops24h 59m

$1,272

PortlandSydney

PWM - SYD

PWMSYD

Portland

Mon 4/6

6:00 am-7:00 am

2 stops35h 00m

Sydney Kingsford Smith

Tue 4/21

10:20 am-10:58 pm

2 stops26h 38m

$1,297

PortlandSydney

PWM - SYD

PWMSYD

Portland

Tue 4/7

2:27 pm-7:00 am

2 stops26h 33m

Sydney Kingsford Smith

Tue 4/21

10:20 am-7:01 pm

2 stops22h 41m

$1,297

PortlandSydney

PWM - SYD

PWMSYD

Portland

Sun 4/5

6:00 am-7:00 am

2 stops35h 00m

Sydney Kingsford Smith

Mon 4/20

10:20 am-10:58 pm

2 stops26h 38m

$1,297

PortlandSydney

PWM - SYD

PWMSYD

Portland

Mon 4/6

6:00 am-7:00 am

2 stops35h 00m

Sydney Kingsford Smith

Mon 4/20

9:30 am-10:58 pm

2 stops27h 28m

$1,297

PortlandSydney

PWM - SYD

PWMSYD

Portland

Sat 4/4

4:50 pm-6:35 am

2 stops47h 45m

Sydney Kingsford Smith

Tue 4/21

9:25 am-10:03 pm

2 stops26h 38m

$1,316

PortlandSydney

PWM - SYD

PWMSYD

Portland

Sat 4/4

4:50 pm-6:35 am

2 stops47h 45m

Sydney Kingsford Smith

Mon 4/20

9:25 am-10:03 pm

2 stops26h 38m

$1,316

PortlandSydney

PWM - SYD

PWMSYD

Portland

Fri 4/3

6:00 am-7:55 am

2 stops34h 55m

Sydney Kingsford Smith

Sun 4/19

9:30 am-9:26 pm

2 stops25h 56m

$1,347

PortlandSydney

PWM - SYD

PWMSYD

Portland

Fri 4/3

6:00 am-7:55 am

2 stops34h 55m

Sydney Kingsford Smith

Sat 4/18

10:20 am-9:26 pm

2 stops25h 06m

$1,397

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/10

Showing 1-10 of 13 results
1
2

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 December.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*1 star
AranGrantPrice Accuracy2 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, Maine-Sydney flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Portland, Maine-Sydney flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Portland, Maine-Sydney flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Portland, Maine-Sydney flights, Cheapflights users trust AranGrant the most. AranGrant 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, Maine-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.

Cheapflights Insights

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

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

Currently, September is the cheapest month in which you can book a flight from Portland, Maine to Sydney (average of $251). Flying from Portland, Maine to Sydney in January is currently the most expensive (average of $1,143). 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.

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.

  • How long is the flight from Portland, Maine to Sydney?

    There are many flights that can get you from Portland, Maine to Sydney in 33h 55m. Fly via American Airlines or United Airlines to get the fastest option. The distance between Portland, Maine and Sydney is about 10124 mi. This flight may include one or multiple stops.

  • 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, Maine to Sydney?

    Currently, September is the cheapest month in which you can book a flight from Portland, Maine to Sydney (average of $251). Flying from Portland, Maine to Sydney in January is currently the most expensive (average of $1,143). 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 Sydney?

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

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