HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Sydney

$1,223+ 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 8/29. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — SYD
Aug 18 — Aug 251
Tue 8/18
Tue 8/25
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Portland to Sydney with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap 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 July 19, 2026.

This Qantas Airways deal was found by Cheapflights users on 7/14. 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 Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/293:57 pm
PWM
-
SYD
2 stops24h 58m
Multiple Airlines
Sat 9/56:25 am
SYD
-
PWM
3 stops30h 23m
Multiple Airlines
Deal found 7/14$1,223
This United Airlines deal was found by Cheapflights users on 7/15. 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.
Sat 8/2910:45 am
PWM
-
SYD
2 stops30h 10m
United Airlines
Sat 9/510:20 am
SYD
-
PWM
2 stops22h 58m
United Airlines
Deal found 7/15$1,291
This American Airlines deal was found by Cheapflights users on 7/14. 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.
Sat 8/298:00 am
PWM
-
SYD
1 stop32h 55m
American Airlines
Sat 9/59:10 am
SYD
-
PWM
2 stops27h 34m
American Airlines
Deal found 7/14$1,368
This Delta deal was found by Cheapflights users on 7/16. 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 8/156:05 am
PWM
-
SYD
2 stops34h 45m
Delta
Fri 8/219:15 am
SYD
-
PWM
2 stops29h 44m
Delta
Deal found 7/16$1,763
This Etihad Airways deal was found by Cheapflights users on 7/17. 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 Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/192:40 pm
PWM
-
SYD
2 stops73h 30m
Etihad Airways
Sun 8/233:40 pm
SYD
-
PWM
2 stops58h 50m
Etihad Airways
Deal found 7/17$1,908
This United Airlines deal was found by Cheapflights users on 7/15. 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.
Sun 12/277:43 pm
PWM
-
SYD
2 stops43h 17m
United Airlines
Sun 1/109:15 am
SYD
-
PWM
2 stops29h 42m
United Airlines
Deal found 7/15$2,136
This United Airlines deal was found by Cheapflights users on 7/17. 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 8/168:15 am
PWM
-
SYD
1 stop32h 45m
United Airlines
Sat 8/2210:20 am
SYD
-
PWM
1 stop20h 42m
United Airlines
Deal found 7/17$2,358

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 July 19, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,223
(Qantas Airways)
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

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 July 19, 2026.
Use the filters below to find and compare flights from Portland to Sydney that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandSydney

PWM - SYD

PWMSYD

Portland

Sat 8/29

3:57 pm-6:55 am

2 stops24h 58m

Sydney Kingsford Smith

Sat 9/5

6:25 am-10:48 pm

3 stops30h 23m

$1,223
Quickest round-trip

PortlandSydney

PWM - SYD

PWMSYD

Portland

Sat 8/29

10:45 am-6:55 am

2 stops30h 10m

Sydney Kingsford Smith

Sat 9/5

10:20 am-7:18 pm

2 stops22h 58m

$1,291

PortlandSydney

PWM - SYD

PWMSYD

Portland

Sat 8/15

6:05 am-6:50 am

2 stops34h 45m

Sydney Kingsford Smith

Fri 8/21

9:15 am-12:59 am

2 stops29h 44m

$1,763

PortlandSydney

PWM - SYD

PWMSYD

Portland

Wed 8/19

2:40 pm-6:10 am

2 stops73h 30m

Sydney Kingsford Smith

Sun 8/23

3:40 pm-12:30 pm

2 stops58h 50m

$1,908

PortlandSydney

PWM - SYD

PWMSYD

Portland

Sun 12/27

7:43 pm-7:00 am

2 stops43h 17m

Sydney Kingsford Smith

Sun 1/10

9:15 am-10:57 pm

2 stops29h 42m

$2,136

PortlandSydney

PWM - SYD

PWMSYD

Portland

Sat 8/15

2:40 pm-7:10 pm

3 stops62h 30m

Sydney Kingsford Smith

Fri 8/21

2:50 pm-6:06 pm

2 stops41h 16m

$2,586

PortlandSydney

PWM - SYD

PWMSYD

Portland

Sat 8/15

2:40 pm-7:10 pm

3 stops62h 30m

Sydney Kingsford Smith

Fri 8/21

9:05 pm-12:25 am

3 stops41h 20m

$3,036

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/14

Sorted by cheapest first

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 July.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 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 FlightHub the most. FlightHub 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.

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 July 19, 2026.
Read through reviews of airlines operating flights from Portland to Sydney, such as American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
American Airlines
7.1
Good
11,827 reviews

Boarding

7.5

Entertainment

6.8

Food

6.4

Comfort

7.2

Crew

7.9

Overall

7.1

Reviews

1 / 20
10.0
Excellent

Linda,Jul 2026

ROA - CLT

Very helpful and friendly people who pushed me where I needed to go
American Airlines
7.1
Good
11,827 reviews
American Airlines
7.1
Good
11,827 reviews

Boarding

7.5

Entertainment

6.8

Food

6.4

Comfort

7.2

Crew

7.9

Overall

7.1

Reviews

1 / 20
10.0
Excellent

Linda,Jul 2026

ROA - CLT

Very helpful and friendly people who pushed me where I needed to go

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 30h 10m. Fly via United Airlines, Delta, or Etihad Airways 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.

See more FAQs

Traveling to a place near Sydney?

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Portland to Sydney

See prices for flight routes from nearby airports that may be better suited for you.
Boston to Sydney 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 2,558,603 searches. Data last updated July 19, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$1,691Average$2,325FlexibilityNo cancel feeOn-time71%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.