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$1,657+ 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 5/4. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — SYD
Dec 23 — Dec 301
Tue 12/23
Tue 12/30
1 adult, Economy
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Cheap 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 November 23, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$1,657
(Delta)
Provider with most accurate pricing for Portland-Sydney Kingsford Smith flight deals.
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Provider most trusted by Cheapflights users for Portland-Sydney Kingsford Smith flights.
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From Portland to Sydney Kingsford Smith
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Find 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 November 23, 2025.

This Delta deal was found by Cheapflights users on 11/20. 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.
Mon 5/412:50 pmPWM - SYD
2 stops27h 45mDelta
Fri 5/89:25 amSYD - PWM
2 stops28h 34mDelta
Deal found 11/20$1,657
This Air Canada deal was found by Cheapflights users on 11/21. 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.
Mon 5/46:00 amPWM - SYD
3 stops35h 20mAir Canada
Fri 5/89:20 amSYD - PWM
2 stops26h 07mAir Canada
Deal found 11/21$2,259
This United Airlines deal was found by Cheapflights users on 11/21. 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 1/59:30 amPWM - SYD
2 stops31h 45mUnited Airlines
Mon 1/1212:10 pmSYD - PWM
2 stops27h 20mUnited Airlines
Deal found 11/21$2,836
This Turkish Airlines deal was found by Cheapflights users on 11/20. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/46:00 amPWM - SYD
3 stops47h 15mTurkish Airlines
Fri 5/89:10 pmSYD - PWM
3 stops64h 26mTurkish Airlines
Deal found 11/20$3,331

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 November 23, 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

Mon 5/4

12:50 pm-6:35 am

2 stops27h 45m

Sydney Kingsford Smith

Fri 5/8

9:25 am-11:59 pm

2 stops28h 34m

$1,657

PortlandSydney

PWM - SYD

PWMSYD

Portland

Mon 5/4

6:00 am-7:20 am

3 stops35h 20m

Sydney Kingsford Smith

Fri 5/8

9:20 am-9:27 pm

2 stops26h 07m

$2,259

PortlandSydney

PWM - SYD

PWMSYD

Portland

Mon 1/5

9:30 am-9:15 am

2 stops31h 45m

Sydney Kingsford Smith

Mon 1/12

12:10 pm-11:30 pm

2 stops27h 20m

$2,836

PortlandSydney

PWM - SYD

PWMSYD

Portland

Mon 5/4

6:00 am-7:15 pm

3 stops47h 15m

Sydney Kingsford Smith

Fri 5/8

9:10 pm-11:36 pm

3 stops64h 26m

$3,331

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/20

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 November.
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 $252). Flying from Portland, Maine to Sydney in December is currently the most expensive (average of $1,155). 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 27h 45m. Fly via Delta or Air Canada 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 $252). Flying from Portland, Maine to Sydney in December is currently the most expensive (average of $1,155). 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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