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$1,469+ 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 3/2. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — SYD
Feb 15 — Feb 221
Sun 2/15
Sun 2/22
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 January 16, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$1,469
(United Airlines)
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

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 January 16, 2026.

This United Airlines deal was found by Cheapflights users on 1/15. 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 3/26:00 am
PWM
-
SYD
2 stops35h 05m
United Airlines
Mon 3/912:10 pm
SYD
-
PWM
2 stops24h 01m
United Airlines
Deal found 1/15$1,469
This United Airlines deal was found by Cheapflights users on 1/14. 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 7/133:35 pm
PWM
-
SYD
2 stops25h 25m
United Airlines
Tue 7/2810:20 am
SYD
-
PWM
2 stops26h 37m
United Airlines
Deal found 1/14$1,470
This United Airlines deal was found by Cheapflights users on 1/13. 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.
Sat 2/283:05 pm
PWM
-
SYD
2 stops26h 00m
United Airlines
Sat 3/712:10 pm
SYD
-
PWM
2 stops23h 03m
United Airlines
Deal found 1/13$1,569
This United Airlines deal was found by Cheapflights users on 1/14. 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 1/158:40 am
PWM
-
SYD
2 stops30h 20m
United Airlines
Thu 1/2211:50 am
SYD
-
PWM
2 stops23h 02m
United Airlines
Deal found 1/14$1,570
This Air Canada deal was found by Cheapflights users on 1/13. 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.
Sun 2/86:00 am
PWM
-
SYD
2 stops35h 35m
Air Canada
Thu 2/1211:20 am
SYD
-
PWM
3 stops52h 00m
Air Canada
Deal found 1/13$2,243
This Cathay Pacific deal was found by Cheapflights users on 1/14. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/136:26 am
PWM
-
SYD
2 stops47h 44m
Multiple Airlines
Tue 7/286:45 pm
SYD
-
PWM
3 stops41h 56m
Multiple Airlines
Deal found 1/14$2,259
This American Airlines deal was found by Cheapflights users on 1/14. 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.
Mon 7/135:36 pm
PWM
-
SYD
1 stop23h 19m
American Airlines
Tue 7/289:10 am
SYD
-
PWM
2 stops26h 34m
American Airlines
Deal found 1/14$2,263
This United Airlines deal was found by Cheapflights users on 1/13. 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 2/82:31 pm
PWM
-
SYD
2 stops26h 34m
United Airlines
Thu 2/1212:10 pm
SYD
-
PWM
2 stops24h 59m
United Airlines
Deal found 1/13$2,270

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 January 16, 2026.
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 3/2

6:00 am-9:05 am

2 stops35h 05m

Sydney Kingsford Smith

Mon 3/9

12:10 pm-9:11 pm

2 stops24h 01m

$1,469

PortlandSydney

PWM - SYD

PWMSYD

Portland

Mon 7/13

3:35 pm-7:00 am

2 stops25h 25m

Sydney Kingsford Smith

Tue 7/28

10:20 am-10:57 pm

2 stops26h 37m

$1,470

PortlandSydney

PWM - SYD

PWMSYD

Portland

Sat 2/28

3:05 pm-9:05 am

2 stops26h 00m

Sydney Kingsford Smith

Sat 3/7

12:10 pm-7:13 pm

2 stops23h 03m

$1,569

PortlandSydney

PWM - SYD

PWMSYD

Portland

Sun 2/8

6:00 am-9:35 am

2 stops35h 35m

Sydney Kingsford Smith

Thu 2/12

11:20 am-11:20 pm

3 stops52h 00m

$2,243

PortlandSydney

PWM - SYD

PWMSYD

Portland

Mon 7/13

6:26 am-8:10 pm

2 stops47h 44m

Sydney Kingsford Smith

Tue 7/28

6:45 pm-10:41 pm

3 stops41h 56m

$2,259

PortlandSydney

PWM - SYD

PWMSYD

Portland

Mon 7/13

5:36 pm-6:55 am

1 stop23h 19m

Sydney Kingsford Smith

Tue 7/28

9:10 am-9:44 pm

2 stops26h 34m

$2,263

PortlandSydney

PWM - SYD

PWMSYD

Portland

Sun 2/8

2:31 pm-9:05 am

2 stops26h 34m

Sydney Kingsford Smith

Thu 2/12

12:10 pm-9:09 pm

2 stops24h 59m

$2,270

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/15

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 January.
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 $1,099). 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 35h 05m. Fly via United Airlines 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 $251). Flying from Portland, Maine to Sydney in January is currently the most expensive (average of $1,099). 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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